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-rw-r--r--cpu/arm720t/Makefile43
-rw-r--r--cpu/arm720t/interrupts.c265
-rw-r--r--cpu/arm920t/Makefile43
-rw-r--r--cpu/arm920t/interrupts.c304
-rw-r--r--cpu/arm920t/serial.c200
-rw-r--r--cpu/arm920t/speed.c96
-rw-r--r--cpu/mpc824x/cpu_init.c383
-rw-r--r--cpu/mpc824x/drivers/i2c/i2c1.c1228
-rw-r--r--cpu/mpc824x/pci.c78
-rw-r--r--cpu/mpc824x/start.S835
-rw-r--r--cpu/mpc8260/cpu_init.c264
-rw-r--r--cpu/mpc8260/i2c.c733
-rw-r--r--cpu/mpc8xx/cpu.c516
-rw-r--r--cpu/mpc8xx/fec.c710
-rw-r--r--cpu/mpc8xx/spi.c571
-rw-r--r--cpu/ppc4xx/405gp_enet.c867
-rw-r--r--cpu/ppc4xx/405gp_pci.c502
-rw-r--r--cpu/ppc4xx/cpu.c253
-rw-r--r--cpu/ppc4xx/i2c.c417
-rw-r--r--cpu/ppc4xx/sdram.c191
-rw-r--r--cpu/ppc4xx/speed.c308
-rw-r--r--cpu/ppc4xx/vecnum.h100
-rw-r--r--cpu/sa1100/Makefile43
-rw-r--r--cpu/xscale/serial.c143
-rw-r--r--cpu/xscale/start.S412
25 files changed, 9505 insertions, 0 deletions
diff --git a/cpu/arm720t/Makefile b/cpu/arm720t/Makefile
new file mode 100644
index 0000000..8c950da
--- /dev/null
+++ b/cpu/arm720t/Makefile
@@ -0,0 +1,43 @@
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(CPU).a
+
+START = start.o
+OBJS = serial.o interrupts.o cpu.o
+
+all: .depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/arm720t/interrupts.c b/cpu/arm720t/interrupts.c
new file mode 100644
index 0000000..52787fe
--- /dev/null
+++ b/cpu/arm720t/interrupts.c
@@ -0,0 +1,265 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <clps7111.h>
+
+#include <asm/proc-armv/ptrace.h>
+
+extern void reset_cpu(ulong addr);
+
+/* we always count down the max. */
+#define TIMER_LOAD_VAL 0xffff
+
+/* macro to read the 16 bit timer */
+#define READ_TIMER (IO_TC1D & 0xffff)
+
+#ifdef CONFIG_USE_IRQ
+/* enable IRQ/FIQ interrupts */
+void enable_interrupts (void)
+{
+ unsigned long temp;
+ __asm__ __volatile__("mrs %0, cpsr\n"
+ "bic %0, %0, #0x80\n"
+ "msr cpsr_c, %0"
+ : "=r" (temp)
+ :
+ : "memory");
+}
+
+
+/*
+ * disable IRQ/FIQ interrupts
+ * returns true if interrupts had been enabled before we disabled them
+ */
+int disable_interrupts (void)
+{
+ unsigned long old,temp;
+ __asm__ __volatile__("mrs %0, cpsr\n"
+ "orr %1, %0, #0x80\n"
+ "msr cpsr_c, %1"
+ : "=r" (old), "=r" (temp)
+ :
+ : "memory");
+ return (old & 0x80) == 0;
+}
+#else
+void enable_interrupts (void)
+{
+ return;
+}
+int disable_interrupts (void)
+{
+ return 0;
+}
+#endif
+
+
+
+void bad_mode (void)
+{
+ panic ("Resetting CPU ...\n");
+ reset_cpu (0);
+}
+
+void show_regs (struct pt_regs *regs)
+{
+ unsigned long flags;
+ const char *processor_modes[] =
+ { "USER_26", "FIQ_26", "IRQ_26", "SVC_26", "UK4_26", "UK5_26",
+"UK6_26", "UK7_26",
+ "UK8_26", "UK9_26", "UK10_26", "UK11_26", "UK12_26", "UK13_26",
+ "UK14_26", "UK15_26",
+ "USER_32", "FIQ_32", "IRQ_32", "SVC_32", "UK4_32", "UK5_32",
+ "UK6_32", "ABT_32",
+ "UK8_32", "UK9_32", "UK10_32", "UND_32", "UK12_32", "UK13_32",
+ "UK14_32", "SYS_32"
+ };
+
+ flags = condition_codes (regs);
+
+ printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
+ "sp : %08lx ip : %08lx fp : %08lx\n",
+ instruction_pointer (regs),
+ regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
+ printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
+ regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
+ printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
+ regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
+ printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
+ regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
+ printf ("Flags: %c%c%c%c",
+ flags & CC_N_BIT ? 'N' : 'n',
+ flags & CC_Z_BIT ? 'Z' : 'z',
+ flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
+ printf (" IRQs %s FIQs %s Mode %s%s\n",
+ interrupts_enabled (regs) ? "on" : "off",
+ fast_interrupts_enabled (regs) ? "on" : "off",
+ processor_modes[processor_mode (regs)],
+ thumb_mode (regs) ? " (T)" : "");
+}
+
+void do_undefined_instruction (struct pt_regs *pt_regs)
+{
+ printf ("undefined instruction\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_software_interrupt (struct pt_regs *pt_regs)
+{
+ printf ("software interrupt\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_prefetch_abort (struct pt_regs *pt_regs)
+{
+ printf ("prefetch abort\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_data_abort (struct pt_regs *pt_regs)
+{
+ printf ("data abort\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_not_used (struct pt_regs *pt_regs)
+{
+ printf ("not used\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_fiq (struct pt_regs *pt_regs)
+{
+ printf ("fast interrupt request\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_irq (struct pt_regs *pt_regs)
+{
+ printf ("interrupt request\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+static ulong timestamp;
+static ulong lastdec;
+
+int interrupt_init (void)
+{
+ /* disable all interrupts */
+ IO_INTMR1 = 0;
+
+ /* operate timer 1 in prescale mode */
+ IO_SYSCON1 |= SYSCON1_TC1M;
+
+ /* select 2kHz clock source for timer 1 */
+ IO_SYSCON1 &= ~SYSCON1_TC1S;
+
+ /* set timer 1 counter */
+ lastdec = IO_TC1D = TIMER_LOAD_VAL;
+ timestamp = 0;
+
+ return (0);
+}
+
+/*
+ * timer without interrupts
+ */
+
+void reset_timer (void)
+{
+ reset_timer_masked ();
+}
+
+ulong get_timer (ulong base)
+{
+ return get_timer_masked () - base;
+}
+
+void set_timer (ulong t)
+{
+ timestamp = t;
+}
+
+void udelay (unsigned long usec)
+{
+ ulong tmo;
+
+ tmo = usec / 1000;
+ tmo *= CFG_HZ;
+ tmo /= 1000;
+
+ tmo += get_timer (0);
+
+ while (get_timer_masked () < tmo)
+ /*NOP*/;
+}
+
+void reset_timer_masked (void)
+{
+ /* reset time */
+ lastdec = READ_TIMER;
+ timestamp = 0;
+}
+
+ulong get_timer_masked (void)
+{
+ ulong now = READ_TIMER;
+
+ if (lastdec >= now) {
+ /* normal mode */
+ timestamp += lastdec - now;
+ } else {
+ /* we have an overflow ... */
+ timestamp += lastdec + TIMER_LOAD_VAL - now;
+ }
+ lastdec = now;
+
+ return timestamp;
+}
+
+void udelay_masked (unsigned long usec)
+{
+ ulong tmo;
+
+ tmo = usec / 1000;
+ tmo *= CFG_HZ;
+ tmo /= 1000;
+
+ reset_timer_masked ();
+
+ while (get_timer_masked () < tmo)
+ /*NOP*/;
+}
diff --git a/cpu/arm920t/Makefile b/cpu/arm920t/Makefile
new file mode 100644
index 0000000..e5ec81d
--- /dev/null
+++ b/cpu/arm920t/Makefile
@@ -0,0 +1,43 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(CPU).a
+
+START = start.o
+OBJS = serial.o interrupts.o cpu.o speed.o
+
+all: .depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/arm920t/interrupts.c b/cpu/arm920t/interrupts.c
new file mode 100644
index 0000000..963ccbd
--- /dev/null
+++ b/cpu/arm920t/interrupts.c
@@ -0,0 +1,304 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <arm920t.h>
+#if defined(CONFIG_S3C2400)
+#include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+#include <s3c2410.h>
+#endif
+
+#include <asm/proc-armv/ptrace.h>
+
+extern void reset_cpu(ulong addr);
+int timer_load_val = 0;
+
+/* macro to read the 16 bit timer */
+#define READ_TIMER (rTCNTO4 & 0xffff)
+
+#ifdef CONFIG_USE_IRQ
+/* enable IRQ interrupts */
+void enable_interrupts (void)
+{
+ unsigned long temp;
+ __asm__ __volatile__("mrs %0, cpsr\n"
+ "bic %0, %0, #0x80\n"
+ "msr cpsr_c, %0"
+ : "=r" (temp)
+ :
+ : "memory");
+}
+
+
+/*
+ * disable IRQ/FIQ interrupts
+ * returns true if interrupts had been enabled before we disabled them
+ */
+int disable_interrupts (void)
+{
+ unsigned long old,temp;
+ __asm__ __volatile__("mrs %0, cpsr\n"
+ "orr %1, %0, #0xc0\n"
+ "msr cpsr_c, %1"
+ : "=r" (old), "=r" (temp)
+ :
+ : "memory");
+ return (old & 0x80) == 0;
+}
+#else
+void enable_interrupts (void)
+{
+ return;
+}
+int disable_interrupts (void)
+{
+ return 0;
+}
+#endif
+
+
+
+void bad_mode (void)
+{
+ panic ("Resetting CPU ...\n");
+ reset_cpu (0);
+}
+
+void show_regs (struct pt_regs *regs)
+{
+ unsigned long flags;
+ const char *processor_modes[] = {
+ "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
+ "UK4_26", "UK5_26", "UK6_26", "UK7_26",
+ "UK8_26", "UK9_26", "UK10_26", "UK11_26",
+ "UK12_26", "UK13_26", "UK14_26", "UK15_26",
+ "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
+ "UK4_32", "UK5_32", "UK6_32", "ABT_32",
+ "UK8_32", "UK9_32", "UK10_32", "UND_32",
+ "UK12_32", "UK13_32", "UK14_32", "SYS_32",
+ };
+
+ flags = condition_codes (regs);
+
+ printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
+ "sp : %08lx ip : %08lx fp : %08lx\n",
+ instruction_pointer (regs),
+ regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
+ printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
+ regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
+ printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
+ regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
+ printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
+ regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
+ printf ("Flags: %c%c%c%c",
+ flags & CC_N_BIT ? 'N' : 'n',
+ flags & CC_Z_BIT ? 'Z' : 'z',
+ flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
+ printf (" IRQs %s FIQs %s Mode %s%s\n",
+ interrupts_enabled (regs) ? "on" : "off",
+ fast_interrupts_enabled (regs) ? "on" : "off",
+ processor_modes[processor_mode (regs)],
+ thumb_mode (regs) ? " (T)" : "");
+}
+
+void do_undefined_instruction (struct pt_regs *pt_regs)
+{
+ printf ("undefined instruction\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_software_interrupt (struct pt_regs *pt_regs)
+{
+ printf ("software interrupt\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_prefetch_abort (struct pt_regs *pt_regs)
+{
+ printf ("prefetch abort\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_data_abort (struct pt_regs *pt_regs)
+{
+ printf ("data abort\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_not_used (struct pt_regs *pt_regs)
+{
+ printf ("not used\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_fiq (struct pt_regs *pt_regs)
+{
+ printf ("fast interrupt request\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+void do_irq (struct pt_regs *pt_regs)
+{
+ printf ("interrupt request\n");
+ show_regs (pt_regs);
+ bad_mode ();
+}
+
+static ulong timestamp;
+static ulong lastdec;
+
+int interrupt_init (void)
+{
+ /* use PWM Timer 4 because it has no output */
+ /* prescaler for Timer 4 is 16 */
+ rTCFG0 = 0x0f00;
+ if (timer_load_val == 0)
+ {
+ /*
+ * for 10 ms clock period @ PCLK with 4 bit divider = 1/2
+ * (default) and prescaler = 16. Should be 10390
+ * @33.25MHz and 15625 @ 50 MHz
+ */
+ timer_load_val = get_PCLK()/(2 * 16 * 100);
+ }
+ /* load value for 10 ms timeout */
+ lastdec = rTCNTB4 = timer_load_val;
+ /* auto load, manual update of Timer 4 */
+ rTCON = 0x600000;
+ /* auto load, start Timer 4 */
+ rTCON = 0x500000;
+ timestamp = 0;
+
+ return (0);
+}
+
+/*
+ * timer without interrupts
+ */
+
+void reset_timer (void)
+{
+ reset_timer_masked ();
+}
+
+ulong get_timer (ulong base)
+{
+ return get_timer_masked () - base;
+}
+
+void set_timer (ulong t)
+{
+ timestamp = t;
+}
+
+void udelay (unsigned long usec)
+{
+ ulong tmo;
+
+ tmo = usec / 1000;
+ tmo *= (timer_load_val * 100);
+ tmo /= 1000;
+
+ tmo += get_timer (0);
+
+ while (get_timer_masked () < tmo)
+ /*NOP*/;
+}
+
+void reset_timer_masked (void)
+{
+ /* reset time */
+ lastdec = READ_TIMER;
+ timestamp = 0;
+}
+
+ulong get_timer_masked (void)
+{
+ ulong now = READ_TIMER;
+
+ if (lastdec >= now) {
+ /* normal mode */
+ timestamp += lastdec - now;
+ } else {
+ /* we have an overflow ... */
+ timestamp += lastdec + timer_load_val - now;
+ }
+ lastdec = now;
+
+ return timestamp;
+}
+
+void udelay_masked (unsigned long usec)
+{
+ ulong tmo;
+
+ tmo = usec / 1000;
+ tmo *= (timer_load_val * 100);
+ tmo /= 1000;
+
+ reset_timer_masked ();
+
+ while (get_timer_masked () < tmo)
+ /*NOP*/;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+ return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk (void)
+{
+ ulong tbclk;
+
+#if defined(CONFIG_SMDK2400) || defined(CONFIG_TRAB)
+ tbclk = timer_load_val * 100;
+#elif defined(CONFIG_SMDK2410)
+ tbclk = CFG_HZ;
+#endif
+
+ return tbclk;
+}
diff --git a/cpu/arm920t/serial.c b/cpu/arm920t/serial.c
new file mode 100644
index 0000000..c32e73b
--- /dev/null
+++ b/cpu/arm920t/serial.c
@@ -0,0 +1,200 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#if defined(CONFIG_S3C2400) || defined(CONFIG_TRAB)
+#include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+#include <s3c2410.h>
+#endif
+
+
+void serial_setbrg (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ int i;
+ unsigned int reg = 0;
+
+ /* value is calculated so : (int)(PCLK/16./baudrate) -1 */
+ reg = get_PCLK() / (16 * gd->baudrate) - 1;
+
+#ifdef CONFIG_SERIAL1
+ /* FIFO enable, Tx/Rx FIFO clear */
+ rUFCON0 = 0x07;
+ rUMCON0 = 0x0;
+ /* Normal,No parity,1 stop,8 bit */
+ rULCON0 = 0x3;
+ /*
+ * tx=level,rx=edge,disable timeout int.,enable rx error int.,
+ * normal,interrupt or polling
+ */
+ rUCON0 = 0x245;
+ rUBRDIV0 = reg;
+
+#ifdef CONFIG_HWFLOW
+ rUMCON0 = 0x1; /* RTS up */
+#endif
+ for (i = 0; i < 100; i++);
+#elif CONFIG_SERIAL2
+# if defined(CONFIG_TRAB)
+# #error "TRAB supports only CONFIG_SERIAL1"
+# endif
+ /* FIFO enable, Tx/Rx FIFO clear */
+ rUFCON1 = 0x06;
+ rUMCON1 = 0x0;
+ /* Normal,No parity,1 stop,8 bit */
+ rULCON1 = 0x3;
+ /*
+ * tx=level,rx=edge,disable timeout int.,enable rx error int.,
+ * normal,interrupt or polling
+ */
+ rUCON1 = 0x245;
+ rUBRDIV1 = reg;
+
+#ifdef CONFIG_HWFLOW
+ rUMCON1 = 0x1; /* RTS up */
+#endif
+ for (i = 0; i < 100; i++);
+#else
+#error "Bad: you didn't configure serial ..."
+#endif
+}
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init (void)
+{
+ serial_setbrg ();
+
+ return (0);
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_getc (void)
+{
+#ifdef CONFIG_SERIAL1
+ while (!(rUTRSTAT0 & 0x1));
+
+ return rURXH0 & 0xff;
+#elif CONFIG_SERIAL2
+ while (!(rUTRSTAT1 & 0x1));
+
+ return rURXH1 & 0xff;
+#endif
+}
+
+#ifdef CONFIG_HWFLOW
+static int hwflow = 0; /* turned off by default */
+int hwflow_onoff(int on)
+{
+ switch(on) {
+ case 0:
+ default:
+ break; /* return current */
+ case 1:
+ hwflow = 1; /* turn on */
+ break;
+ case -1:
+ hwflow = 0; /* turn off */
+ break;
+ }
+ return hwflow;
+}
+#endif
+
+#ifdef CONFIG_MODEM_SUPPORT
+static int be_quiet = 0;
+void disable_putc(void)
+{
+ be_quiet = 1;
+}
+
+void enable_putc(void)
+{
+ be_quiet = 0;
+}
+#endif
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+#ifdef CONFIG_MODEM_SUPPORT
+ if (be_quiet)
+ return;
+#endif
+
+#ifdef CONFIG_SERIAL1
+ /* wait for room in the tx FIFO on SERIAL1 */
+ while (!(rUTRSTAT0 & 0x2));
+
+#ifdef CONFIG_HWFLOW
+ /* Wait for CTS up */
+ while(hwflow && !(rUMSTAT0 & 0x1))
+ ;
+#endif
+
+ rUTXH0 = c;
+#elif CONFIG_SERIAL2
+ /* wait for room in the tx FIFO on SERIAL2 */
+ while (!(rUTRSTAT1 & 0x2));
+
+#ifdef CONFIG_HWFLOW
+ /* Wait for CTS up */
+ while(hwflow && !(rUMSTAT1 & 0x1))
+ ;
+#endif
+ rUTXH1 = c;
+#endif
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int serial_tstc (void)
+{
+#ifdef CONFIG_SERIAL1
+ return rUTRSTAT0 & 0x1;
+#elif CONFIG_SERIAL2
+ return rUTRSTAT1 & 0x1;
+#endif
+}
+
+void
+serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
diff --git a/cpu/arm920t/speed.c b/cpu/arm920t/speed.c
new file mode 100644
index 0000000..1ee0c1a
--- /dev/null
+++ b/cpu/arm920t/speed.c
@@ -0,0 +1,96 @@
+/*
+ * (C) Copyright 2001-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, d.mueller@elsoft.ch
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* This code should work for both the S3C2400 and the S3C2410
+ * as they seem to have the same PLL and clock machinery inside.
+ * The different address mapping is handled by the s3c24xx.h files below.
+ */
+
+#include <common.h>
+#if defined(CONFIG_S3C2400)
+#include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+#include <s3c2410.h>
+#endif
+
+#define MPLL 0
+#define UPLL 1
+
+/* ------------------------------------------------------------------------- */
+/* NOTE: This describes the proper use of this file.
+ *
+ * CONFIG_PLL_INPUT_FREQ should be defined as the input frequency of the PLL.
+ *
+ * get_FCLK(), get_HCLK(), get_PCLK() and get_UCLK() return the clock of
+ * the specified bus in HZ.
+ */
+/* ------------------------------------------------------------------------- */
+
+static ulong get_PLLCLK(int pllreg)
+{
+ ulong r, m, p, s;
+
+ if (pllreg == MPLL)
+ r = rMPLLCON;
+ else if (pllreg == UPLL)
+ r = rUPLLCON;
+ else
+ hang();
+
+ m = ((r & 0xFF000) >> 12) + 8;
+ p = ((r & 0x003F0) >> 4) + 2;
+ s = r & 0x3;
+
+ return((CONFIG_PLL_INPUT_FREQ * m) / (p << s));
+}
+
+/* return FCLK frequency */
+ulong get_FCLK(void)
+{
+ return(get_PLLCLK(MPLL));
+}
+
+/* return HCLK frequency */
+ulong get_HCLK(void)
+{
+ ulong clkdiv = rCLKDIVN;
+
+ return((clkdiv & 0x2) ? get_FCLK()/2 : get_FCLK());
+}
+
+/* return PCLK frequency */
+ulong get_PCLK(void)
+{
+ ulong clkdiv = rCLKDIVN;
+
+ return((clkdiv & 0x1) ? get_HCLK()/2 : get_HCLK());
+}
+
+/* return UCLK frequency */
+ulong get_UCLK(void)
+{
+ return(get_PLLCLK(UPLL));
+}
diff --git a/cpu/mpc824x/cpu_init.c b/cpu/mpc824x/cpu_init.c
new file mode 100644
index 0000000..602f65d
--- /dev/null
+++ b/cpu/mpc824x/cpu_init.c
@@ -0,0 +1,383 @@
+/*
+ * (C) Copyright 2000
+ * Rob Taylor. Flying Pig Systems. robt@flyingpig.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <mpc824x.h>
+
+#ifndef CFG_BANK0_ROW
+#define CFG_BANK0_ROW 0
+#endif
+#ifndef CFG_BANK1_ROW
+#define CFG_BANK1_ROW 0
+#endif
+#ifndef CFG_BANK2_ROW
+#define CFG_BANK2_ROW 0
+#endif
+#ifndef CFG_BANK3_ROW
+#define CFG_BANK3_ROW 0
+#endif
+#ifndef CFG_BANK4_ROW
+#define CFG_BANK4_ROW 0
+#endif
+#ifndef CFG_BANK5_ROW
+#define CFG_BANK5_ROW 0
+#endif
+#ifndef CFG_BANK6_ROW
+#define CFG_BANK6_ROW 0
+#endif
+#ifndef CFG_BANK7_ROW
+#define CFG_BANK7_ROW 0
+#endif
+#ifndef CFG_DBUS_SIZE2
+#define CFG_DBUS_SIZE2 0
+#endif
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ */
+void
+cpu_init_f (void)
+{
+/* MOUSSE board is initialized in asm */
+#if !defined(CONFIG_MOUSSE) && !defined(CONFIG_BMW)
+ register unsigned long val;
+ CONFIG_WRITE_HALFWORD(PCICR, 0x06); /* Bus Master, respond to PCI memory space acesses*/
+/* CONFIG_WRITE_HALFWORD(PCISR, 0xffff); */ /*reset PCISR*/
+
+#if defined(CONFIG_MUSENKI) || defined(CONFIG_PN62)
+/* Why is this here, you ask? Try, just try setting 0x8000
+ * in PCIACR with CONFIG_WRITE_HALFWORD()
+ * this one was a stumper, and we are annoyed
+ */
+
+#define M_CONFIG_WRITE_HALFWORD( addr, data ) \
+ __asm__ __volatile__( \
+ " \
+ stw %2,0(%0)\n \
+ sync\n \
+ sth %3,2(%1)\n \
+ sync\n \
+ " \
+ : /* no output */ \
+ : "r" (CONFIG_ADDR), "r" (CONFIG_DATA), \
+ "r" (PCISWAP(addr & ~3)), "r" (PCISWAP(data << 16)) \
+ );
+
+ M_CONFIG_WRITE_HALFWORD(PCIACR, 0x8000);
+#endif
+
+ CONFIG_WRITE_BYTE(PCLSR, 0x8); /* set PCI cache line size */
+
+ /*
+ * Note that although this bit is cleared after a hard reset, it
+ * must be explicitly set and then cleared by software during
+ * initialization in order to guarantee correct operation of the
+ * DLL and the SDRAM_CLK[0:3] signals (if they are used).
+ */
+ CONFIG_READ_BYTE (AMBOR, val);
+ CONFIG_WRITE_BYTE(AMBOR, val & 0xDF);
+ CONFIG_WRITE_BYTE(AMBOR, val | 0x20);
+ CONFIG_WRITE_BYTE(AMBOR, val & 0xDF);
+
+ CONFIG_READ_WORD(PICR1, val);
+#if defined(CONFIG_MPC8240)
+ CONFIG_WRITE_WORD( PICR1,
+ (val & (PICR1_ADDRESS_MAP | PICR1_RCS0)) |
+ PIRC1_MSK | PICR1_PROC_TYPE_603E |
+ PICR1_FLASH_WR_EN | PICR1_MCP_EN |
+ PICR1_CF_DPARK | PICR1_EN_PCS |
+ PICR1_CF_APARK );
+#elif defined(CONFIG_MPC8245)
+ CONFIG_WRITE_WORD( PICR1,
+ (val & (PICR1_RCS0)) |
+ PICR1_PROC_TYPE_603E |
+ PICR1_FLASH_WR_EN | PICR1_MCP_EN |
+ PICR1_CF_DPARK | PICR1_NO_BUSW_CK |
+ PICR1_DEC| PICR1_CF_APARK | 0x10); /* 8245 UM says bit 4 must be set */
+#else
+#error Specific type of MPC824x must be defined (i.e. CONFIG_MPC8240)
+#endif
+
+ CONFIG_READ_WORD(PICR2, val);
+ val= val & ~ (PICR2_CF_SNOOP_WS_MASK | PICR2_CF_APHASE_WS_MASK); /*mask off waitstate bits*/
+#ifndef CONFIG_PN62
+ val |= PICR2_CF_SNOOP_WS_1WS | PICR2_CF_APHASE_WS_1WS; /*1 wait state*/
+#endif
+ CONFIG_WRITE_WORD(PICR2, val);
+
+ CONFIG_WRITE_WORD(EUMBBAR, CFG_EUMB_ADDR);
+#ifndef CFG_RAMBOOT
+ CONFIG_WRITE_WORD(MCCR1, (CFG_ROMNAL << MCCR1_ROMNAL_SHIFT) |
+ (CFG_BANK0_ROW) |
+ (CFG_BANK1_ROW << MCCR1_BANK1ROW_SHIFT) |
+ (CFG_BANK2_ROW << MCCR1_BANK2ROW_SHIFT) |
+ (CFG_BANK3_ROW << MCCR1_BANK3ROW_SHIFT) |
+ (CFG_BANK4_ROW << MCCR1_BANK4ROW_SHIFT) |
+ (CFG_BANK5_ROW << MCCR1_BANK5ROW_SHIFT) |
+ (CFG_BANK6_ROW << MCCR1_BANK6ROW_SHIFT) |
+ (CFG_BANK7_ROW << MCCR1_BANK7ROW_SHIFT) |
+ (CFG_ROMFAL << MCCR1_ROMFAL_SHIFT));
+#endif
+
+#if defined(CFG_ASRISE) && defined(CFG_ASFALL)
+ CONFIG_WRITE_WORD(MCCR2, CFG_REFINT << MCCR2_REFINT_SHIFT |
+ CFG_ASRISE << MCCR2_ASRISE_SHIFT |
+ CFG_ASFALL << MCCR2_ASFALL_SHIFT);
+#else
+ CONFIG_WRITE_WORD(MCCR2, CFG_REFINT << MCCR2_REFINT_SHIFT);
+#endif
+
+#if defined(CONFIG_MPC8240)
+ CONFIG_WRITE_WORD(MCCR3,
+ (((CFG_BSTOPRE & 0x003c) >> 2) << MCCR3_BSTOPRE2TO5_SHIFT) |
+ (CFG_REFREC << MCCR3_REFREC_SHIFT) |
+ (CFG_RDLAT << MCCR3_RDLAT_SHIFT));
+#elif defined(CONFIG_MPC8245)
+ CONFIG_WRITE_WORD(MCCR3,
+ (((CFG_BSTOPRE & 0x003c) >> 2) << MCCR3_BSTOPRE2TO5_SHIFT) |
+ (CFG_REFREC << MCCR3_REFREC_SHIFT));
+#else
+#error Specific type of MPC824x must be defined (i.e. CONFIG_MPC8240)
+#endif
+
+/* this is gross. We think these should all be the same, and various boards
+ * should define CFG_ACTORW to 0 if they don't want to set it, or even, if
+ * its not set, we define it to zero in this file
+ */
+#if defined(CONFIG_CU824) || defined(CONFIG_PN62)
+ CONFIG_WRITE_WORD(MCCR4,
+ (CFG_PRETOACT << MCCR4_PRETOACT_SHIFT) |
+ (CFG_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) |
+ MCCR4_BIT21 |
+ (CFG_REGISTERD_TYPE_BUFFER ? MCCR4_REGISTERED: 0) |
+ ((CFG_BSTOPRE & 0x0003) <<MCCR4_BSTOPRE0TO1_SHIFT ) |
+ (((CFG_SDMODE_CAS_LAT <<4) | (CFG_SDMODE_WRAP <<3) |
+ CFG_SDMODE_BURSTLEN) << MCCR4_SDMODE_SHIFT) |
+ (CFG_ACTORW << MCCR4_ACTTORW_SHIFT) |
+ (((CFG_BSTOPRE & 0x03c0) >> 6) << MCCR4_BSTOPRE6TO9_SHIFT));
+#elif defined(CONFIG_MPC8240)
+ CONFIG_WRITE_WORD(MCCR4,
+ (CFG_PRETOACT << MCCR4_PRETOACT_SHIFT) |
+ (CFG_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) |
+ MCCR4_BIT21 |
+ (CFG_REGISTERD_TYPE_BUFFER ? MCCR4_REGISTERED: 0) |
+ ((CFG_BSTOPRE & 0x0003) <<MCCR4_BSTOPRE0TO1_SHIFT ) |
+ (((CFG_SDMODE_CAS_LAT <<4) | (CFG_SDMODE_WRAP <<3) |
+ (CFG_SDMODE_BURSTLEN)) <<MCCR4_SDMODE_SHIFT) |
+ (((CFG_BSTOPRE & 0x03c0) >> 6) <<MCCR4_BSTOPRE6TO9_SHIFT ));
+#elif defined(CONFIG_MPC8245)
+ CONFIG_READ_WORD(MCCR1, val);
+ val &= MCCR1_DBUS_SIZE0; /* test for 64-bit mem bus */
+
+ CONFIG_WRITE_WORD(MCCR4,
+ (CFG_PRETOACT << MCCR4_PRETOACT_SHIFT) |
+ (CFG_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) |
+ (CFG_EXTROM ? MCCR4_EXTROM : 0) |
+ (CFG_REGDIMM ? MCCR4_REGDIMM : 0) |
+ (CFG_REGISTERD_TYPE_BUFFER ? MCCR4_REGISTERED: 0) |
+ ((CFG_BSTOPRE & 0x0003) <<MCCR4_BSTOPRE0TO1_SHIFT ) |
+ (CFG_DBUS_SIZE2 << MCCR4_DBUS_SIZE2_SHIFT) |
+ (((CFG_SDMODE_CAS_LAT <<4) | (CFG_SDMODE_WRAP <<3) |
+ (val ? 2 : 3)) << MCCR4_SDMODE_SHIFT) |
+ (CFG_ACTORW << MCCR4_ACTTORW_SHIFT) |
+ (((CFG_BSTOPRE & 0x03c0) >> 6) <<MCCR4_BSTOPRE6TO9_SHIFT ));
+#else
+#error Specific type of MPC824x must be defined (i.e. CONFIG_MPC8240)
+#endif
+
+ CONFIG_WRITE_WORD(MSAR1,
+ ( (CFG_BANK0_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) |
+ (((CFG_BANK1_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) |
+ (((CFG_BANK2_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) |
+ (((CFG_BANK3_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(EMSAR1,
+ ( (CFG_BANK0_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) |
+ (((CFG_BANK1_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) |
+ (((CFG_BANK2_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) |
+ (((CFG_BANK3_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(MSAR2,
+ ( (CFG_BANK4_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) |
+ (((CFG_BANK5_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) |
+ (((CFG_BANK6_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) |
+ (((CFG_BANK7_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(EMSAR2,
+ ( (CFG_BANK4_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) |
+ (((CFG_BANK5_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) |
+ (((CFG_BANK6_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) |
+ (((CFG_BANK7_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(MEAR1,
+ ( (CFG_BANK0_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) |
+ (((CFG_BANK1_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) |
+ (((CFG_BANK2_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) |
+ (((CFG_BANK3_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(EMEAR1,
+ ( (CFG_BANK0_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) |
+ (((CFG_BANK1_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) |
+ (((CFG_BANK2_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) |
+ (((CFG_BANK3_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(MEAR2,
+ ( (CFG_BANK4_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) |
+ (((CFG_BANK5_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) |
+ (((CFG_BANK6_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) |
+ (((CFG_BANK7_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24));
+ CONFIG_WRITE_WORD(EMEAR2,
+ ( (CFG_BANK4_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) |
+ (((CFG_BANK5_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) |
+ (((CFG_BANK6_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) |
+ (((CFG_BANK7_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24));
+
+ CONFIG_WRITE_BYTE(ODCR, CFG_ODCR);
+#ifdef CFG_DLL_MAX_DELAY
+ CONFIG_WRITE_BYTE(MIOCR1, CFG_DLL_MAX_DELAY); /* needed to make DLL lock */
+#endif
+#if defined(CFG_DLL_EXTEND) && defined(CFG_PCI_HOLD_DEL)
+ CONFIG_WRITE_BYTE(PMCR2, CFG_DLL_EXTEND | CFG_PCI_HOLD_DEL);
+#endif
+#if defined(MIOCR2) && defined(CFG_SDRAM_DSCD)
+ CONFIG_WRITE_BYTE(MIOCR2, CFG_SDRAM_DSCD); /* change memory input */
+#endif /* setup & hold time */
+
+ CONFIG_WRITE_BYTE(MBER,
+ CFG_BANK0_ENABLE |
+ (CFG_BANK1_ENABLE << 1) |
+ (CFG_BANK2_ENABLE << 2) |
+ (CFG_BANK3_ENABLE << 3) |
+ (CFG_BANK4_ENABLE << 4) |
+ (CFG_BANK5_ENABLE << 5) |
+ (CFG_BANK6_ENABLE << 6) |
+ (CFG_BANK7_ENABLE << 7));
+
+#ifdef CFG_PGMAX
+ CONFIG_WRITE_BYTE(MPMR, CFG_PGMAX);
+#endif
+
+ /* ! Wait 200us before initialize other registers */
+ /*FIXME: write a decent udelay wait */
+ __asm__ __volatile__(
+ " mtctr %0 \n \
+ 0: bdnz 0b\n"
+ :
+ : "r" (0x10000));
+
+ CONFIG_READ_WORD(MCCR1, val);
+ CONFIG_WRITE_WORD(MCCR1, val | MCCR1_MEMGO); /* set memory access going */
+ __asm__ __volatile__("eieio");
+
+#endif /* !CONFIG_MOUSSE && !CONFIG_BMW */
+}
+
+
+#ifdef CONFIG_MOUSSE
+#ifdef INCLUDE_MPC107_REPORT
+struct MPC107_s{
+ unsigned int iobase;
+ char desc[120];
+} MPC107Regs[] ={
+ {BMC_BASE+0x0, "MPC107 Vendor/Device ID"},
+ {BMC_BASE+0x4, "MPC107 PCI Command/Status Register"},
+ {BMC_BASE+0x8, "MPC107 Revision"},
+ {BMC_BASE+0xC, "MPC107 Cache Line Size"},
+ {BMC_BASE+0x10, "MPC107 LMBAR"},
+ {BMC_BASE+0x14, "MPC824x PCSR"},
+ {BMC_BASE+0xA8, "MPC824x PICR1"},
+ {BMC_BASE+0xAC, "MPC824x PICR2"},
+ {BMC_BASE+0x46, "MPC824x PACR"},
+ {BMC_BASE+0x310, "MPC824x ITWR"},
+ {BMC_BASE+0x300, "MPC824x OMBAR"},
+ {BMC_BASE+0x308, "MPC824x OTWR"},
+ {BMC_BASE+0x14, "MPC107 Peripheral Control and Status Register"},
+ {BMC_BASE+0x78, "MPC107 EUMBAR"},
+ {BMC_BASE+0xC0, "MPC107 Processor Bus Error Status"},
+ {BMC_BASE+0xC4, "MPC107 PCI Bus Error Status"},
+ {BMC_BASE+0xC8, "MPC107 Processor/PCI Error Address"},
+ {BMC_BASE+0xE0, "MPC107 AMBOR Register"},
+ {BMC_BASE+0xF0, "MPC107 MCCR1 Register"},
+ {BMC_BASE+0xF4, "MPC107 MCCR2 Register"},
+ {BMC_BASE+0xF8, "MPC107 MCCR3 Register"},
+ {BMC_BASE+0xFC, "MPC107 MCCR4 Register"}
+};
+#define N_MPC107_Regs (sizeof(MPC107Regs)/sizeof(MPC107Regs[0]))
+#endif /* INCLUDE_MPC107_REPORT */
+#endif /* CONFIG_MOUSSE */
+
+/*
+ * initialize higher level parts of CPU like time base and timers
+ */
+int cpu_init_r (void)
+{
+#ifdef CONFIG_MOUSSE
+#ifdef INCLUDE_MPC107_REPORT
+ unsigned int tmp = 0, i;
+#endif
+ /*
+ * Initialize the EUMBBAR (Embedded Util Mem Block Base Addr Reg).
+ * This is necessary before the EPIC, DMA ctlr, I2C ctlr, etc. can
+ * be accessed.
+ */
+
+#ifdef CONFIG_MPC8240 /* only on MPC8240 */
+ mpc824x_mpc107_setreg (EUMBBAR, EUMBBAR_VAL);
+ /* MOT/SPS: Issue #10002, PCI (FD Alias enable) */
+ mpc824x_mpc107_setreg (AMBOR, 0x000000C0);
+#endif
+
+
+#ifdef INCLUDE_MPC107_REPORT
+ /* Check MPC824x PCI Device and Vendor ID */
+ while ((tmp = mpc824x_mpc107_getreg (BMC_BASE)) != 0x31057) {
+ printf (" MPC107: offset=0x%x, val = 0x%x\n",
+ BMC_BASE,
+ tmp);
+ }
+
+ for (i = 0; i < N_MPC107_Regs; i++) {
+ printf (" 0x%x/%s = 0x%x\n",
+ MPC107Regs[i].iobase,
+ MPC107Regs[i].desc,
+ mpc824x_mpc107_getreg (MPC107Regs[i].iobase));
+ }
+
+ printf ("IBAT0L = 0x%08X\n", mfspr (IBAT0L));
+ printf ("IBAT0U = 0x%08X\n", mfspr (IBAT0U));
+ printf ("IBAT1L = 0x%08X\n", mfspr (IBAT1L));
+ printf ("IBAT1U = 0x%08X\n", mfspr (IBAT1U));
+ printf ("IBAT2L = 0x%08X\n", mfspr (IBAT2L));
+ printf ("IBAT2U = 0x%08X\n", mfspr (IBAT2U));
+ printf ("IBAT3L = 0x%08X\n", mfspr (IBAT3L));
+ printf ("IBAT3U = 0x%08X\n", mfspr (IBAT3U));
+ printf ("DBAT0L = 0x%08X\n", mfspr (DBAT0L));
+ printf ("DBAT0U = 0x%08X\n", mfspr (DBAT0U));
+ printf ("DBAT1L = 0x%08X\n", mfspr (DBAT1L));
+ printf ("DBAT1U = 0x%08X\n", mfspr (DBAT1U));
+ printf ("DBAT2L = 0x%08X\n", mfspr (DBAT2L));
+ printf ("DBAT2U = 0x%08X\n", mfspr (DBAT2U));
+ printf ("DBAT3L = 0x%08X\n", mfspr (DBAT3L));
+ printf ("DBAT3U = 0x%08X\n", mfspr (DBAT3U));
+#endif /* INCLUDE_MPC107_REPORT */
+#endif /* CONFIG_MOUSSE */
+ return (0);
+}
diff --git a/cpu/mpc824x/drivers/i2c/i2c1.c b/cpu/mpc824x/drivers/i2c/i2c1.c
new file mode 100644
index 0000000..be6ec60
--- /dev/null
+++ b/cpu/mpc824x/drivers/i2c/i2c1.c
@@ -0,0 +1,1228 @@
+/*************************************************************
+ *
+ * Copyright @ Motorola, 1999
+ *
+ ************************************************************/
+#include <common.h>
+
+#ifdef CONFIG_HARD_I2C
+#include <i2c.h>
+#include "i2c_export.h"
+#include "i2c.h"
+
+#undef I2CDBG0
+#undef DEBUG
+
+/* Define a macro to use an optional application-layer print function, if
+ * one was passed to the I2C library during initialization. If there was
+ * no function pointer passed, this protects against calling it. Also define
+ * the global variable that holds the passed pointer.
+ */
+#define TIMEOUT (CFG_HZ/4)
+#define PRINT if ( app_print ) app_print
+static int (*app_print) (char *, ...);
+
+/******************* Internal to I2C Driver *****************/
+static unsigned int ByteToXmit = 0;
+static unsigned int XmitByte = 0;
+static unsigned char *XmitBuf = 0;
+static unsigned int XmitBufEmptyStop = 0;
+static unsigned int ByteToRcv = 0;
+static unsigned int RcvByte = 0;
+static unsigned char *RcvBuf = 0;
+static unsigned int RcvBufFulStop = 0;
+static unsigned int MasterRcvAddress = 0;
+
+/* Set by call to get_eumbbar during I2C_Initialize.
+ * This could be globally available to the I2C library, but there is
+ * an advantage to passing it as a parameter: it is already in a register
+ * and doesn't have to be loaded from memory. Also, that is the way the
+ * I2C library was already implemented and I don't want to change it without
+ * a more detailed analysis.
+ * It is being set as a global variable in I2C_Initialize to hide it from
+ * the DINK application layer, because it is Kahlua-specific. I think that
+ * get_eumbbar, load_runtime_reg, and store_runtime_reg should be defined in
+ * a Kahlua-specific library dealing with the embedded utilities memory block.
+ * Right now, get_eumbbar is defined in dink32/kahlua.s. The other two are
+ * defined in dink32/drivers/i2c/i2c2.s.
+ */
+static unsigned int Global_eumbbar = 0;
+
+extern unsigned int load_runtime_reg (unsigned int eumbbar,
+ unsigned int reg);
+
+extern unsigned int store_runtime_reg (unsigned int eumbbar,
+ unsigned int reg, unsigned int val);
+
+/************************** API *****************/
+
+/* Application Program Interface (API) are the calls provided by the I2C
+ * library to upper layer applications (i.e., DINK) to access the Kahlua
+ * I2C bus interface. The functions and values that are part of this API
+ * are declared in i2c_export.h.
+ */
+
+/* Initialize I2C unit with the following:
+ * driver's slave address
+ * interrupt enabled
+ * optional pointer to application layer print function
+ *
+ * These parameters may be added:
+ * desired clock rate
+ * digital filter frequency sampling rate
+ *
+ * This function must be called before I2C unit can be used.
+ */
+I2C_Status I2C_Initialize (unsigned char addr,
+ I2C_INTERRUPT_MODE en_int,
+ int (*p) (char *, ...))
+{
+ I2CStatus status;
+
+ /* establish the pointer, if there is one, to the application's "printf" */
+ app_print = p;
+
+ /* If this is the first call, get the embedded utilities memory block
+ * base address. I'm not sure what to do about error handling here:
+ * if a non-zero value is returned, accept it.
+ */
+ if (Global_eumbbar == 0)
+ Global_eumbbar = get_eumbbar ();
+ if (Global_eumbbar == 0) {
+ PRINT ("I2C_Initialize: can't find EUMBBAR\n");
+ return I2C_ERROR;
+ }
+
+ /* validate the I2C address */
+ if (addr & 0x80) {
+ PRINT ("I2C_Initialize, I2C address invalid: %d 0x%x\n",
+ (unsigned int) addr, (unsigned int) addr);
+ return I2C_ERROR;
+ }
+
+ /* Call the internal I2C library function to perform work.
+ * Accept the default frequency sampling rate (no way to set it currently,
+ * via I2C_Init) and set the clock frequency to something reasonable.
+ */
+ status = I2C_Init (Global_eumbbar, (unsigned char) 0x31, addr, en_int);
+ if (status != I2CSUCCESS) {
+ PRINT ("I2C_Initialize: error in initiation\n");
+ return I2C_ERROR;
+ }
+
+ /* all is well */
+ return I2C_SUCCESS;
+}
+
+
+/* Perform the given I2C transaction, only MASTER_XMIT and MASTER_RCV
+ * are implemented. Both are only in polling mode.
+ *
+ * en_int controls interrupt/polling mode
+ * act is the type of transaction
+ * i2c_addr is the I2C address of the slave device
+ * data_addr is the address of the data on the slave device
+ * len is the length of data to send or receive
+ * buffer is the address of the data buffer
+ * stop = I2C_NO_STOP, don't signal STOP at end of transaction
+ * I2C_STOP, signal STOP at end of transaction
+ * retry is the timeout retry value, currently ignored
+ * rsta = I2C_NO_RESTART, this is not continuation of existing transaction
+ * I2C_RESTART, this is a continuation of existing transaction
+ */
+I2C_Status I2C_do_transaction ( I2C_INTERRUPT_MODE en_int,
+ I2C_TRANSACTION_MODE act,
+ unsigned char i2c_addr,
+ unsigned char data_addr,
+ int len,
+ char *buffer,
+ I2C_STOP_MODE stop,
+ int retry, I2C_RESTART_MODE rsta)
+{
+ I2C_Status status;
+ unsigned char data_addr_buffer[1];
+
+#if 1
+/* This is a temporary work-around. The I2C library breaks the protocol
+ * if it attempts to handle a data transmission in more than one
+ * transaction, so the data address and the actual data bytes are put
+ * into a single buffer before sending it to the library internal functions.
+ * The problem is related to being able to restart a transaction without
+ * sending the I2C device address or repeating the data address. It may take
+ * a day or two to sort it all out, so I'll have to get back to it later.
+ * Look at I2C_Start to see about using some status flags (I'm not sure that
+ * "stop" and "rsta" are enough to reflect the states, maybe so; but the logic
+ * in the library is insufficient) to control correct handling of the protocol.
+ */
+ unsigned char dummy_buffer[257];
+
+ if (act == I2C_MASTER_XMIT) {
+ int i;
+
+ if (len > 256)
+ return I2C_ERROR;
+ for (i = 1; i <= len; i++)
+ dummy_buffer[i] = buffer[i - 1];
+ dummy_buffer[0] = data_addr;
+ status = I2C_do_buffer (en_int, act, i2c_addr, 1 + len,
+ dummy_buffer, stop, retry, rsta);
+ if (status != I2C_SUCCESS) {
+ PRINT ("I2C_do_transaction: can't perform data transfer\n");
+ return I2C_ERROR;
+ }
+ return I2C_SUCCESS;
+ }
+#endif /* end of temp work-around */
+
+ /* validate requested transaction type */
+ if ((act != I2C_MASTER_XMIT) && (act != I2C_MASTER_RCV)) {
+ PRINT ("I2C_do_transaction, invalid transaction request: %d\n",
+ act);
+ return I2C_ERROR;
+ }
+
+ /* range check the I2C address */
+ if (i2c_addr & 0x80) {
+ PRINT ("I2C_do_transaction, I2C address out of range: %d 0x%x\n",
+ (unsigned int) i2c_addr, (unsigned int) i2c_addr);
+ return I2C_ERROR;
+ } else {
+ data_addr_buffer[0] = data_addr;
+ }
+
+ /*
+ * We first have to contact the slave device and transmit the
+ * data address. Be careful about the STOP and restart stuff.
+ * We don't want to signal STOP after sending the data
+ * address, but this could be a continuation if the
+ * application didn't release the bus after the previous
+ * transaction, by not sending a STOP after it.
+ */
+ status = I2C_do_buffer (en_int, I2C_MASTER_XMIT, i2c_addr, 1,
+ data_addr_buffer, I2C_NO_STOP, retry, rsta);
+ if (status != I2C_SUCCESS) {
+ PRINT ("I2C_do_transaction: can't send data address for read\n");
+ return I2C_ERROR;
+ }
+
+ /* The data transfer will be a continuation. */
+ rsta = I2C_RESTART;
+
+ /* now handle the user data */
+ status = I2C_do_buffer (en_int, act, i2c_addr, len,
+ buffer, stop, retry, rsta);
+ if (status != I2C_SUCCESS) {
+ PRINT ("I2C_do_transaction: can't perform data transfer\n");
+ return I2C_ERROR;
+ }
+
+ /* all is well */
+ return I2C_SUCCESS;
+}
+
+/* This function performs the work for I2C_do_transaction. The work is
+ * split into this function to enable I2C_do_transaction to first transmit
+ * the data address to the I2C slave device without putting the data address
+ * into the first byte of the buffer.
+ *
+ * en_int controls interrupt/polling mode
+ * act is the type of transaction
+ * i2c_addr is the I2C address of the slave device
+ * len is the length of data to send or receive
+ * buffer is the address of the data buffer
+ * stop = I2C_NO_STOP, don't signal STOP at end of transaction
+ * I2C_STOP, signal STOP at end of transaction
+ * retry is the timeout retry value, currently ignored
+ * rsta = I2C_NO_RESTART, this is not continuation of existing transaction
+ * I2C_RESTART, this is a continuation of existing transaction
+ */
+static I2C_Status I2C_do_buffer (I2C_INTERRUPT_MODE en_int,
+ I2C_TRANSACTION_MODE act,
+ unsigned char i2c_addr,
+ int len,
+ unsigned char *buffer,
+ I2C_STOP_MODE stop,
+ int retry, I2C_RESTART_MODE rsta)
+{
+ I2CStatus rval;
+ unsigned int dev_stat;
+
+ if (act == I2C_MASTER_RCV) {
+ /* set up for master-receive transaction */
+ rval = I2C_get (Global_eumbbar, i2c_addr, buffer, len, stop, rsta);
+ } else {
+ /* set up for master-transmit transaction */
+ rval = I2C_put (Global_eumbbar, i2c_addr, buffer, len, stop, rsta);
+ }
+
+ /* validate the setup */
+ if (rval != I2CSUCCESS) {
+ dev_stat = load_runtime_reg (Global_eumbbar, I2CSR);
+ PRINT ("Error(I2C_do_buffer): control phase, code(0x%08x), status(0x%08x)\n", rval, dev_stat);
+ I2C_Stop (Global_eumbbar);
+ return I2C_ERROR;
+ }
+
+ if (en_int == 1) {
+ /* this should not happen, no interrupt handling yet */
+ return I2C_SUCCESS;
+ }
+
+ /* this performs the polling action, when the transfer is completed,
+ * the status returned from I2C_Timer_Event will be I2CBUFFFULL or
+ * I2CBUFFEMPTY (rcv or xmit), I2CSUCCESS or I2CADDRESS indicates the
+ * transaction is not yet complete, anything else is an error.
+ */
+ while (rval == I2CSUCCESS || rval == I2CADDRESS) {
+ int timeval = get_timer (0);
+
+ /* poll the device until something happens */
+ do {
+ rval = I2C_Timer_Event (Global_eumbbar, 0);
+ }
+ while (rval == I2CNOEVENT && get_timer (timeval) < TIMEOUT);
+
+ /* check for error condition */
+ if (rval == I2CSUCCESS ||
+ rval == I2CBUFFFULL ||
+ rval == I2CBUFFEMPTY ||
+ rval == I2CADDRESS) {
+ ; /* do nothing */
+ } else {
+ /* report the error condition */
+ dev_stat = load_runtime_reg (Global_eumbbar, I2CSR);
+ PRINT ("Error(I2C_do_buffer): code(0x%08x), status(0x%08x)\n",
+ rval, dev_stat);
+ return I2C_ERROR;
+ }
+ }
+
+ /* all is well */
+ return I2C_SUCCESS;
+}
+
+/**
+ * Note:
+ *
+ * In all following functions,
+ * the caller shall pass the configured embedded utility memory
+ * block base, EUMBBAR.
+ **/
+
+/***********************************************************
+ * function: I2C_put
+ *
+ * description:
+ Send a buffer of data to the intended rcv_addr.
+ * If stop_flag is set, after the whole buffer
+ * is sent, generate a STOP signal provided that the
+ * receiver doesn't signal the STOP in the middle.
+ * I2C is the master performing transmitting. If
+ * no STOP signal is generated at the end of current
+ * transaction, the master can generate a START signal
+ * to another slave addr.
+ *
+ * note: this is master xmit API
+ *********************************************************/
+static I2CStatus I2C_put (unsigned int eumbbar, unsigned char rcv_addr, /* receiver's address */
+ unsigned char *buffer_ptr, /* pointer of data to be sent */
+ unsigned int length, /* number of byte of in the buffer */
+ unsigned int stop_flag, /* 1 - signal STOP when buffer is empty
+ * 0 - no STOP signal when buffer is empty
+ */
+ unsigned int is_cnt)
+{ /* 1 - this is a restart, don't check MBB
+ * 0 - this is a new start, check MBB
+ */
+ if (buffer_ptr == 0 || length == 0) {
+ return I2CERROR;
+ }
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_put\n", __FILE__, __LINE__);
+#endif
+
+ XmitByte = 0;
+ ByteToXmit = length;
+ XmitBuf = buffer_ptr;
+ XmitBufEmptyStop = stop_flag;
+
+ RcvByte = 0;
+ ByteToRcv = 0;
+ RcvBuf = 0;
+
+ /* we are the master, start transaction */
+ return I2C_Start (eumbbar, rcv_addr, XMIT, is_cnt);
+}
+
+/***********************************************************
+ * function: I2C_get
+ *
+ * description:
+ * Receive a buffer of data from the desired sender_addr
+ * If stop_flag is set, when the buffer is full and the
+ * sender does not signal STOP, generate a STOP signal.
+ * I2C is the master performing receiving. If no STOP signal
+ * is generated, the master can generate a START signal
+ * to another slave addr.
+ *
+ * note: this is master receive API
+ **********************************************************/
+static I2CStatus I2C_get (unsigned int eumbbar, unsigned char rcv_from, /* sender's address */
+ unsigned char *buffer_ptr, /* pointer of receiving buffer */
+ unsigned int length, /* length of the receiving buffer */
+ unsigned int stop_flag, /* 1 - signal STOP when buffer is full
+ * 0 - no STOP signal when buffer is full
+ */
+ unsigned int is_cnt)
+{ /* 1 - this is a restart, don't check MBB
+ * 0 - this is a new start, check MBB
+ */
+ if (buffer_ptr == 0 || length == 0) {
+ return I2CERROR;
+ }
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_get\n", __FILE__, __LINE__);
+#endif
+
+ RcvByte = 0;
+ ByteToRcv = length;
+ RcvBuf = buffer_ptr;
+ RcvBufFulStop = stop_flag;
+
+ XmitByte = 0;
+ ByteToXmit = 0;
+ XmitBuf = 0;
+
+ /* we are the master, start the transaction */
+ return I2C_Start (eumbbar, rcv_from, RCV, is_cnt);
+
+}
+
+#if 0 /* turn off dead code */
+/*********************************************************
+ * function: I2C_write
+ *
+ * description:
+ * Send a buffer of data to the requiring master.
+ * If stop_flag is set, after the whole buffer is sent,
+ * generate a STOP signal provided that the requiring
+ * receiver doesn't signal the STOP in the middle.
+ * I2C is the slave performing transmitting.
+ *
+ * Note: this is slave xmit API.
+ *
+ * due to the current Kahlua design, slave transmitter
+ * shall not signal STOP since there is no way
+ * for master to detect it, causing I2C bus hung.
+ *
+ * For the above reason, the stop_flag is always
+ * set, i.e., 0.
+ *
+ * programmer shall use the timer on Kahlua to
+ * control the interval of data byte at the
+ * master side.
+ *******************************************************/
+static I2CStatus I2C_write (unsigned int eumbbar, unsigned char *buffer_ptr, /* pointer of data to be sent */
+ unsigned int length, /* number of byte of in the buffer */
+ unsigned int stop_flag)
+{ /* 1 - signal STOP when buffer is empty
+ * 0 - no STOP signal when buffer is empty
+ */
+ if (buffer_ptr == 0 || length == 0) {
+ return I2CERROR;
+ }
+
+ XmitByte = 0;
+ ByteToXmit = length;
+ XmitBuf = buffer_ptr;
+ XmitBufEmptyStop = 0; /* in order to avoid bus hung, ignored the user's stop_flag */
+
+ RcvByte = 0;
+ ByteToRcv = 0;
+ RcvBuf = 0;
+
+ /* we are the slave, just wait for being called, or pull */
+ /* I2C_Timer_Event( eumbbar ); */
+}
+
+/******************************************************
+ * function: I2C_read
+ *
+ * description:
+ * Receive a buffer of data from the sending master.
+ * If stop_flag is set, when the buffer is full and the
+ * sender does not signal STOP, generate a STOP signal.
+ * I2C is the slave performing receiving.
+ *
+ * note: this is slave receive API
+ ****************************************************/
+static I2CStatus I2C_read (unsigned int eumbbar, unsigned char *buffer_ptr, /* pointer of receiving buffer */
+ unsigned int length, /* length of the receiving buffer */
+ unsigned int stop_flag)
+{ /* 1 - signal STOP when buffer is full
+ * 0 - no STOP signal when buffer is full
+ */
+ if (buffer_ptr == 0 || length == 0) {
+ return I2CERROR;
+ }
+
+ RcvByte = 0;
+ ByteToRcv = length;
+ RcvBuf = buffer_ptr;
+ RcvBufFulStop = stop_flag;
+
+ XmitByte = 0;
+ ByteToXmit = 0;
+ XmitBuf = 0;
+
+ /* wait for master to call us, or poll */
+ /* I2C_Timer_Event( eumbbar ); */
+}
+#endif /* turn off dead code */
+
+/*********************************************************
+ * function: I2c_Timer_Event
+ *
+ * description:
+ * if interrupt is not used, this is the timer event handler.
+ * After each fixed time interval, this function can be called
+ * to check the I2C status and call appropriate function to
+ * handle the status event.
+ ********************************************************/
+static I2CStatus I2C_Timer_Event (unsigned int eumbbar,
+ I2CStatus (*handler) (unsigned int))
+{
+ I2C_STAT stat;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Timer_Event\n", __FILE__, __LINE__);
+#endif
+
+ stat = I2C_Get_Stat (eumbbar);
+
+ if (stat.mif == 1) {
+ if (handler == 0) {
+ return I2C_ISR (eumbbar);
+ } else {
+ return (*handler) (eumbbar);
+ }
+ }
+
+ return I2CNOEVENT;
+}
+
+
+/****************** Device I/O function *****************/
+
+/******************************************************
+ * function: I2C_Start
+ *
+ * description: Generate a START signal in the desired mode.
+ * I2C is the master.
+ *
+ * Return I2CSUCCESS if no error.
+ *
+ * note:
+ ****************************************************/
+static I2CStatus I2C_Start (unsigned int eumbbar, unsigned char slave_addr, /* address of the receiver */
+ I2C_MODE mode, /* XMIT(1) - put (write)
+ * RCV(0) - get (read)
+ */
+ unsigned int is_cnt)
+{ /* 1 - this is a restart, don't check MBB
+ * 0 - this is a new start
+ */
+ unsigned int tmp = 0;
+ I2C_STAT stat;
+ I2C_CTRL ctrl;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Start addr 0x%x mode %d cnt %d\n", __FILE__,
+ __LINE__, slave_addr, mode, is_cnt);
+#endif
+
+ ctrl = I2C_Get_Ctrl (eumbbar);
+
+ /* first make sure I2C has been initialized */
+ if (ctrl.men == 0) {
+ return I2CERROR;
+ }
+
+ /* next make sure bus is idle */
+ stat = I2C_Get_Stat (eumbbar);
+
+ if (is_cnt == 0 && stat.mbb == 1) {
+ /* sorry, we lost */
+ return I2CBUSBUSY;
+ } else if (is_cnt == 1 && stat.mif == 1 && stat.mal == 0) {
+ /* sorry, we lost the bus */
+ return I2CALOSS;
+ }
+
+
+ /* OK, I2C is enabled and we have the bus */
+
+ /* prepare to write the slave address */
+ ctrl.msta = 1;
+ ctrl.mtx = 1;
+ ctrl.txak = 0;
+ ctrl.rsta = is_cnt; /* set the repeat start bit */
+ I2C_Set_Ctrl (eumbbar, ctrl);
+
+ /* write the slave address and xmit/rcv mode bit */
+ tmp = load_runtime_reg (eumbbar, I2CDR);
+ tmp = (tmp & 0xffffff00) |
+ ((slave_addr & 0x007f) << 1) |
+ (mode == XMIT ? 0x0 : 0x1);
+ store_runtime_reg (eumbbar, I2CDR, tmp);
+
+ if (mode == RCV) {
+ MasterRcvAddress = 1;
+ } else {
+ MasterRcvAddress = 0;
+ }
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Start exit\n", __FILE__, __LINE__);
+#endif
+
+ /* wait for the interrupt or poll */
+ return I2CSUCCESS;
+}
+
+/***********************************************************
+ * function: I2c_Stop
+ *
+ * description: Generate a STOP signal to terminate the master
+ * transaction.
+ * return I2CSUCCESS
+ *
+ **********************************************************/
+static I2CStatus I2C_Stop (unsigned int eumbbar)
+{
+ I2C_CTRL ctrl;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Stop enter\n", __FILE__, __LINE__);
+#endif
+
+ ctrl = I2C_Get_Ctrl (eumbbar);
+ ctrl.msta = 0;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Stop exit\n", __FILE__, __LINE__);
+#endif
+
+ return I2CSUCCESS;
+}
+
+/****************************************************
+ * function: I2C_Master_Xmit
+ *
+ * description: Master sends one byte of data to
+ * slave target
+ *
+ * return I2CSUCCESS if the byte transmitted.
+ * Otherwise no-zero
+ *
+ * Note: condition must meet when this function is called:
+ * I2CSR(MIF) == 1 && I2CSR(MCF) == 1 && I2CSR(RXAK) == 0
+ * I2CCR(MSTA) == 1 && I2CCR(MTX) == 1
+ *
+ ***************************************************/
+static I2CStatus I2C_Master_Xmit (unsigned int eumbbar)
+{
+ unsigned int val;
+
+ if (ByteToXmit > 0) {
+
+ if (ByteToXmit == XmitByte) {
+ /* all xmitted */
+ ByteToXmit = 0;
+
+ if (XmitBufEmptyStop == 1) {
+ I2C_Stop (eumbbar);
+ }
+
+ return I2CBUFFEMPTY;
+
+ }
+#ifdef I2CDBG0
+ PRINT ("%s(%d): xmit 0x%02x\n", __FILE__, __LINE__,
+ *(XmitBuf + XmitByte));
+#endif
+
+ val = *(XmitBuf + XmitByte);
+ val &= 0x000000ff;
+ store_runtime_reg (eumbbar, I2CDR, val);
+ XmitByte++;
+
+ return I2CSUCCESS;
+
+ }
+
+ return I2CBUFFEMPTY;
+}
+
+/***********************************************
+ * function: I2C_Master_Rcv
+ *
+ * description: master reads one byte data
+ * from slave source
+ *
+ * return I2CSUCCESS if no error
+ *
+ * Note: condition must meet when this function is called:
+ * I2CSR(MIF) == 1 && I2CSR(MCF) == 1 &&
+ * I2CCR(MSTA) == 1 && I2CCR(MTX) == 0
+ *
+ ***********************************************/
+static I2CStatus I2C_Master_Rcv (unsigned int eumbbar)
+{
+ I2C_CTRL ctrl;
+ unsigned int val;
+
+ if (ByteToRcv > 0) {
+
+ if (ByteToRcv - RcvByte == 2 && RcvBufFulStop == 1) {
+ /* master requests more than or equal to 2 bytes
+ * we are reading 2nd to last byte
+ */
+
+ /* we need to set I2CCR(TXAK) to generate a STOP */
+ ctrl = I2C_Get_Ctrl (eumbbar);
+ ctrl.txak = 1;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+
+ /* Kahlua will automatically generate a STOP
+ * next time a transaction happens
+ */
+
+ /* note: the case of master requesting one byte is
+ * handled in I2C_ISR
+ */
+ }
+
+ /* generat a STOP before reading the last byte */
+ if (RcvByte + 1 == ByteToRcv && RcvBufFulStop == 1) {
+ I2C_Stop (eumbbar);
+ }
+
+ val = load_runtime_reg (eumbbar, I2CDR);
+ *(RcvBuf + RcvByte) = val & 0xFF;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): rcv 0x%02x\n", __FILE__, __LINE__,
+ *(RcvBuf + RcvByte));
+#endif
+
+ RcvByte++;
+
+ if (ByteToRcv == RcvByte) {
+ ByteToRcv = 0;
+
+ return I2CBUFFFULL;
+ }
+
+ return I2CSUCCESS;
+ }
+
+ return I2CBUFFFULL;
+
+}
+
+/****************************************************
+ * function: I2C_Slave_Xmit
+ *
+ * description: Slave sends one byte of data to
+ * requesting destination
+ *
+ * return SUCCESS if the byte transmitted. Otherwise
+ * No-zero
+ *
+ * Note: condition must meet when this function is called:
+ * I2CSR(MIF) == 1 && I2CSR(MCF) == 1 && I2CSR(RXAK) = 0
+ * I2CCR(MSTA) == 0 && I2CCR(MTX) == 1
+ *
+ ***************************************************/
+static I2CStatus I2C_Slave_Xmit (unsigned int eumbbar)
+{
+ unsigned int val;
+
+ if (ByteToXmit > 0) {
+
+ if (ByteToXmit == XmitByte) {
+ /* no more data to send */
+ ByteToXmit = 0;
+
+ /*
+ * do not toggle I2CCR(MTX). Doing so will
+ * cause bus-hung since current Kahlua design
+ * does not give master a way to detect slave
+ * stop. It is always a good idea for master
+ * to use timer to prevent the long long
+ * delays
+ */
+
+ return I2CBUFFEMPTY;
+ }
+#ifdef I2CDBG
+ PRINT ("%s(%d): xmit 0x%02x\n", __FILE__, __LINE__,
+ *(XmitBuf + XmitByte));
+#endif
+
+ val = *(XmitBuf + XmitByte);
+ val &= 0x000000ff;
+ store_runtime_reg (eumbbar, I2CDR, val);
+ XmitByte++;
+
+ return I2CSUCCESS;
+ }
+
+ return I2CBUFFEMPTY;
+}
+
+/***********************************************
+ * function: I2C_Slave_Rcv
+ *
+ * description: slave reads one byte data
+ * from master source
+ *
+ * return I2CSUCCESS if no error otherwise non-zero
+ *
+ * Note: condition must meet when this function is called:
+ * I2CSR(MIF) == 1 && I2CSR(MCF) == 1 &&
+ * I2CCR(MSTA) == 0 && I2CCR(MTX) = 0
+ *
+ ***********************************************/
+static I2CStatus I2C_Slave_Rcv (unsigned int eumbbar)
+{
+ unsigned int val;
+ I2C_CTRL ctrl;
+
+ if (ByteToRcv > 0) {
+ val = load_runtime_reg (eumbbar, I2CDR);
+ *(RcvBuf + RcvByte) = val & 0xff;
+#ifdef I2CDBG
+ PRINT ("%s(%d): rcv 0x%02x\n", __FILE__, __LINE__,
+ *(RcvBuf + RcvByte));
+#endif
+ RcvByte++;
+
+ if (ByteToRcv == RcvByte) {
+ if (RcvBufFulStop == 1) {
+ /* all done */
+ ctrl = I2C_Get_Ctrl (eumbbar);
+ ctrl.txak = 1;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+ }
+
+ ByteToRcv = 0;
+ return I2CBUFFFULL;
+ }
+
+ return I2CSUCCESS;
+ }
+
+ return I2CBUFFFULL;
+}
+
+/****************** Device Control Function *************/
+
+/*********************************************************
+ * function: I2C_Init
+ *
+ * description: Initialize I2C unit with desired frequency divider,
+ * master's listening address, with interrupt enabled
+ * or disabled.
+ *
+ * note:
+ ********************************************************/
+static I2CStatus I2C_Init (unsigned int eumbbar, unsigned char fdr, /* frequency divider */
+ unsigned char slave_addr, /* driver's address used for receiving */
+ unsigned int en_int)
+{ /* 1 - enable I2C interrupt
+ * 0 - disable I2C interrup
+ */
+ I2C_CTRL ctrl;
+ unsigned int tmp;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Init enter\n", __FILE__, __LINE__);
+#endif
+
+ ctrl = I2C_Get_Ctrl (eumbbar);
+ /* disable the I2C module before we change everything */
+ ctrl.men = 0;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+
+ /* set the frequency diver */
+ tmp = load_runtime_reg (eumbbar, I2CFDR);
+ tmp = (tmp & 0xffffffc0) | (fdr & 0x3f);
+ store_runtime_reg (eumbbar, I2CFDR, tmp);
+
+ /* Set our listening (slave) address */
+ tmp = load_runtime_reg (eumbbar, I2CADR);
+ tmp = (tmp & 0xffffff01) | ((slave_addr & 0x7f) << 1);
+ store_runtime_reg (eumbbar, I2CADR, tmp);
+
+ /* enable I2C with desired interrupt setting */
+ ctrl.men = 1;
+ ctrl.mien = en_int & 0x1;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_Init exit\n", __FILE__, __LINE__);
+#endif
+
+ return I2CSUCCESS;
+
+}
+
+/*****************************************
+ * function I2c_Get_Stat
+ *
+ * description: Query I2C Status, i.e., read I2CSR
+ *
+ ****************************************/
+static I2C_STAT I2C_Get_Stat (unsigned int eumbbar)
+{
+ unsigned int temp;
+ I2C_STAT stat;
+
+ temp = load_runtime_reg (eumbbar, I2CSR);
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): get stat = 0x%08x\n", __FILE__, __LINE__, temp);
+#endif
+
+ stat.rsrv0 = (temp & 0xffffff00) >> 8;
+ stat.mcf = (temp & 0x00000080) >> 7;
+ stat.maas = (temp & 0x00000040) >> 6;
+ stat.mbb = (temp & 0x00000020) >> 5;
+ stat.mal = (temp & 0x00000010) >> 4;
+ stat.rsrv1 = (temp & 0x00000008) >> 3;
+ stat.srw = (temp & 0x00000004) >> 2;
+ stat.mif = (temp & 0x00000002) >> 1;
+ stat.rxak = (temp & 0x00000001);
+ return stat;
+}
+
+/*********************************************
+ * function: I2c_Set_Ctrl
+ *
+ * description: Change I2C Control bits,
+ * i.e., write to I2CCR
+ *
+ ********************************************/
+static void I2C_Set_Ctrl (unsigned int eumbbar, I2C_CTRL ctrl)
+{ /* new control value */
+ unsigned int temp = load_runtime_reg (eumbbar, I2CCR);
+
+ temp &= 0xffffff03;
+ temp |= ((ctrl.men & 0x1) << 7);
+ temp |= ((ctrl.mien & 0x1) << 6);
+ temp |= ((ctrl.msta & 0x1) << 5);
+ temp |= ((ctrl.mtx & 0x1) << 4);
+ temp |= ((ctrl.txak & 0x1) << 3);
+ temp |= ((ctrl.rsta & 0x1) << 2);
+#ifdef I2CDBG0
+ PRINT ("%s(%d): set ctrl = 0x%08x\n", __FILE__, __LINE__, temp);
+#endif
+ store_runtime_reg (eumbbar, I2CCR, temp);
+
+}
+
+/*****************************************
+ * function: I2C_Get_Ctrl
+ *
+ * description: Query I2C Control bits,
+ * i.e., read I2CCR
+ *****************************************/
+static I2C_CTRL I2C_Get_Ctrl (unsigned int eumbbar)
+{
+ union {
+ I2C_CTRL ctrl;
+ unsigned int temp;
+ } s;
+
+ s.temp = load_runtime_reg (eumbbar, I2CCR);
+#ifdef I2CDBG0
+ PRINT ("%s(%d): get ctrl = 0x%08x\n", __FILE__, __LINE__, s.temp);
+#endif
+
+ return s.ctrl;
+}
+
+
+/****************************************
+ * function: I2C_Slave_Addr
+ *
+ * description: Process slave address phase.
+ * return I2CSUCCESS if no error
+ *
+ * note: Precondition for calling this function:
+ * I2CSR(MIF) == 1 &&
+ * I2CSR(MAAS) == 1
+ ****************************************/
+static I2CStatus I2C_Slave_Addr (unsigned int eumbbar)
+{
+ I2C_STAT stat = I2C_Get_Stat (eumbbar);
+ I2C_CTRL ctrl = I2C_Get_Ctrl (eumbbar);
+
+ if (stat.srw == 1) {
+ /* we are asked to xmit */
+ ctrl.mtx = 1;
+ I2C_Set_Ctrl (eumbbar, ctrl); /* set MTX */
+ return I2C_Slave_Xmit (eumbbar);
+ }
+
+ /* we are asked to receive data */
+ ctrl.mtx = 0;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+ (void) load_runtime_reg (eumbbar, I2CDR); /* do a fake read to start */
+
+ return I2CADDRESS;
+}
+
+/***********************************************
+ * function: I2C_ISR
+ *
+ * description: I2C Interrupt service routine
+ *
+ * note: Precondition:
+ * I2CSR(MIF) == 1
+ **********************************************/
+static I2CStatus I2C_ISR (unsigned int eumbbar)
+{
+ I2C_STAT stat;
+ I2C_CTRL ctrl;
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): I2C_ISR\n", __FILE__, __LINE__);
+#endif
+
+ stat = I2C_Get_Stat (eumbbar);
+ ctrl = I2C_Get_Ctrl (eumbbar);
+
+ /* clear MIF */
+ stat.mif = 0;
+
+ /* Now let see what kind of event this is */
+ if (stat.mcf == 1) {
+ /* transfer compete */
+
+ /* clear the MIF bit */
+ I2C_Set_Stat (eumbbar, stat);
+
+ if (ctrl.msta == 1) {
+ /* master */
+ if (ctrl.mtx == 1) {
+ /* check if this is the address phase for master receive */
+ if (MasterRcvAddress == 1) {
+ /* Yes, it is the address phase of master receive */
+ ctrl.mtx = 0;
+ /* now check how much we want to receive */
+ if (ByteToRcv == 1 && RcvBufFulStop == 1) {
+ ctrl.txak = 1;
+ }
+
+ I2C_Set_Ctrl (eumbbar, ctrl);
+ (void) load_runtime_reg (eumbbar, I2CDR); /* fake read first */
+
+ MasterRcvAddress = 0;
+ return I2CADDRESS;
+
+ }
+
+ /* master xmit */
+ if (stat.rxak == 0) {
+ /* slave has acknowledged */
+ return I2C_Master_Xmit (eumbbar);
+ }
+
+ /* slave has not acknowledged yet, generate a STOP */
+ if (XmitBufEmptyStop == 1) {
+ ctrl.msta = 0;
+ I2C_Set_Ctrl (eumbbar, ctrl);
+ }
+
+ return I2CSUCCESS;
+ }
+
+ /* master receive */
+ return I2C_Master_Rcv (eumbbar);
+ }
+
+ /* slave */
+ if (ctrl.mtx == 1) {
+ /* slave xmit */
+ if (stat.rxak == 0) {
+ /* master has acknowledged */
+ return I2C_Slave_Xmit (eumbbar);
+ }
+
+ /* master has not acknowledged, wait for STOP */
+ /* do nothing for preventing bus from hung */
+ return I2CSUCCESS;
+ }
+
+ /* slave rcv */
+ return I2C_Slave_Rcv (eumbbar);
+
+ } else if (stat.maas == 1) {
+ /* received a call from master */
+
+ /* clear the MIF bit */
+ I2C_Set_Stat (eumbbar, stat);
+
+ /* master is calling us, process the address phase */
+ return I2C_Slave_Addr (eumbbar);
+ } else {
+ /* has to be arbitration lost */
+ stat.mal = 0;
+ I2C_Set_Stat (eumbbar, stat);
+
+ ctrl.msta = 0; /* return to receive mode */
+ I2C_Set_Ctrl (eumbbar, ctrl);
+ }
+
+ return I2CSUCCESS;
+
+}
+
+/******************************************************
+ * function: I2C_Set_Stat
+ *
+ * description: modify the I2CSR
+ *
+ *****************************************************/
+static void I2C_Set_Stat (unsigned int eumbbar, I2C_STAT stat)
+{
+ union {
+ unsigned int val;
+ I2C_STAT stat;
+ } s_tmp;
+ union {
+ unsigned int val;
+ I2C_STAT stat;
+ } s;
+
+ s.val = load_runtime_reg (eumbbar, I2CSR);
+ s.val &= 0xffffff08;
+ s_tmp.stat = stat;
+ s.val |= (s_tmp.val & 0xf7);
+
+#ifdef I2CDBG0
+ PRINT ("%s(%d): set stat = 0x%08x\n", __FILE__, __LINE__, s.val);
+#endif
+
+ store_runtime_reg (eumbbar, I2CSR, s.val);
+
+}
+
+/******************************************************
+ * The following are routines to glue the rest of
+ * U-Boot to the Sandpoint I2C driver.
+ *****************************************************/
+
+void i2c_init (int speed, int slaveadd)
+{
+#ifdef DEBUG
+ I2C_Initialize (0x7f, 0, (void *) printf);
+#else
+ I2C_Initialize (0x7f, 0, 0);
+#endif
+}
+
+int i2c_probe (uchar chip)
+{
+ int tmp;
+
+ /*
+ * Try to read the first location of the chip. The underlying
+ * driver doesn't appear to support sending just the chip address
+ * and looking for an <ACK> back.
+ */
+ udelay(10000);
+ return i2c_read (chip, 0, 1, (char *)&tmp, 1);
+}
+
+int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ I2CStatus status;
+ uchar xaddr[4];
+
+ if (alen > 0) {
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+ status = I2C_do_buffer (0, I2C_MASTER_XMIT, chip, alen,
+ &xaddr[4 - alen], I2C_NO_STOP, 1,
+ I2C_NO_RESTART);
+ if (status != I2C_SUCCESS) {
+ PRINT ("i2c_read: can't send data address for read\n");
+ return 1;
+ }
+ }
+
+ /* The data transfer will be a continuation. */
+ status = I2C_do_buffer (0, I2C_MASTER_RCV, chip, len,
+ buffer, I2C_STOP, 1, (alen > 0 ? I2C_RESTART :
+ I2C_NO_RESTART));
+
+ if (status != I2C_SUCCESS) {
+ PRINT ("i2c_read: can't perform data transfer\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ I2CStatus status;
+ unsigned char dummy_buffer[I2C_RXTX_LEN + 2];
+ int i;
+
+ dummy_buffer[0] = addr & 0xFF;
+ if (alen == 2)
+ dummy_buffer[1] = (addr >> 8) & 0xFF;
+ for (i = 0; i < len; i++)
+ dummy_buffer[i + alen] = buffer[i];
+
+ status = I2C_do_buffer (0, I2C_MASTER_XMIT, chip, alen + len,
+ dummy_buffer, I2C_STOP, 1, I2C_NO_RESTART);
+
+#ifdef CFG_EEPROM_PAGE_WRITE_DELAY_MS
+ udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
+#endif
+ if (status != I2C_SUCCESS) {
+ PRINT ("i2c_write: can't perform data transfer\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+uchar i2c_reg_read (uchar i2c_addr, uchar reg)
+{
+ char buf[1];
+
+ i2c_init (0, 0);
+
+ i2c_read (i2c_addr, reg, 1, buf, 1);
+
+ return (buf[0]);
+}
+
+void i2c_reg_write (uchar i2c_addr, uchar reg, uchar val)
+{
+ i2c_init (0, 0);
+
+ i2c_write (i2c_addr, reg, 1, &val, 1);
+}
+
+#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/mpc824x/pci.c b/cpu/mpc824x/pci.c
new file mode 100644
index 0000000..7e3c4c3
--- /dev/null
+++ b/cpu/mpc824x/pci.c
@@ -0,0 +1,78 @@
+/*
+ * arch/ppc/kernel/mpc10x_common.c
+ *
+ * Common routines for the Motorola SPS MPC106, MPC107 and MPC8240 Host bridge,
+ * Mem ctlr, EPIC, etc.
+ *
+ * Author: Mark A. Greer
+ * mgreer@mvista.com
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_PCI
+
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <pci.h>
+#include <mpc824x.h>
+
+void pci_mpc824x_init (struct pci_controller *hose)
+{
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ /* System memory space */
+ pci_set_region(hose->regions + 0,
+ CHRP_PCI_MEMORY_BUS,
+ CHRP_PCI_MEMORY_PHYS,
+ CHRP_PCI_MEMORY_SIZE,
+ PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+ /* PCI memory space */
+ pci_set_region(hose->regions + 1,
+ CHRP_PCI_MEM_BUS,
+ CHRP_PCI_MEM_PHYS,
+ CHRP_PCI_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* ISA/PCI memory space */
+ pci_set_region(hose->regions + 2,
+ CHRP_ISA_MEM_BUS,
+ CHRP_ISA_MEM_PHYS,
+ CHRP_ISA_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* PCI I/O space */
+ pci_set_region(hose->regions + 3,
+ CHRP_PCI_IO_BUS,
+ CHRP_PCI_IO_PHYS,
+ CHRP_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ /* ISA/PCI I/O space */
+ pci_set_region(hose->regions + 4,
+ CHRP_ISA_IO_BUS,
+ CHRP_ISA_IO_PHYS,
+ CHRP_ISA_IO_SIZE,
+ PCI_REGION_IO);
+
+ hose->region_count = 5;
+
+ pci_setup_indirect(hose,
+ CHRP_REG_ADDR,
+ CHRP_REG_DATA);
+
+ pci_register_hose(hose);
+
+ hose->last_busno = pci_hose_scan(hose);
+}
+
+#endif
diff --git a/cpu/mpc824x/start.S b/cpu/mpc824x/start.S
new file mode 100644
index 0000000..bd9706d
--- /dev/null
+++ b/cpu/mpc824x/start.S
@@ -0,0 +1,835 @@
+/*
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000,2001,2002 Wolfgang Denk <wd@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* U-Boot - Startup Code for PowerPC based Embedded Boards
+ *
+ *
+ * The processor starts at 0x00000100 and the code is executed
+ * from flash. The code is organized to be at an other address
+ * in memory, but as long we don't jump around before relocating.
+ * board_init lies at a quite high address and when the cpu has
+ * jumped there, everything is ok.
+ * This works because the cpu gives the FLASH (CS0) the whole
+ * address space at startup, and board_init lies as a echo of
+ * the flash somewhere up there in the memorymap.
+ *
+ * board_init will change CS0 to be positioned at the correct
+ * address and (s)dram will be positioned at address 0
+ */
+#include <config.h>
+#include <mpc824x.h>
+#include <version.h>
+
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* We don't want the MMU yet.
+*/
+#undef MSR_KERNEL
+/* FP, Machine Check and Recoverable Interr. */
+#define MSR_KERNEL ( MSR_FP | MSR_ME | MSR_RI )
+
+/*
+ * Set up GOT: Global Offset Table
+ *
+ * Use r14 to access the GOT
+ */
+ START_GOT
+ GOT_ENTRY(_GOT2_TABLE_)
+ GOT_ENTRY(_FIXUP_TABLE_)
+
+ GOT_ENTRY(_start)
+ GOT_ENTRY(_start_of_vectors)
+ GOT_ENTRY(_end_of_vectors)
+ GOT_ENTRY(transfer_to_handler)
+
+ GOT_ENTRY(_end)
+ GOT_ENTRY(.bss)
+#if defined(CONFIG_FADS)
+ GOT_ENTRY(environment)
+#endif
+ END_GOT
+
+/*
+ * r3 - 1st arg to board_init(): IMMP pointer
+ * r4 - 2nd arg to board_init(): boot flag
+ */
+ .text
+ .long 0x27051956 /* U-Boot Magic Number */
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+ . = EXC_OFF_SYS_RESET
+ .globl _start
+_start:
+ li r21, BOOTFLAG_COLD /* Normal Power-On: Boot from FLASH */
+ b boot_cold
+
+ . = EXC_OFF_SYS_RESET + 0x10
+
+ .globl _start_warm
+_start_warm:
+ li r21, BOOTFLAG_WARM /* Software reboot */
+ b boot_warm
+
+boot_cold:
+boot_warm:
+
+ /* Initialize machine status; enable machine check interrupt */
+ /*----------------------------------------------------------------------*/
+ li r3, MSR_KERNEL /* Set FP, ME, RI flags */
+ mtmsr r3
+ mtspr SRR1, r3 /* Make SRR1 match MSR */
+
+ addis r0,0,0x0000 /* lets make sure that r0 is really 0 */
+ mtspr HID0, r0 /* disable I and D caches */
+
+ mfspr r3, ICR /* clear Interrupt Cause Register */
+
+ mfmsr r3 /* turn off address translation */
+ addis r4,0,0xffff
+ ori r4,r4,0xffcf
+ and r3,r3,r4
+ mtmsr r3
+ isync
+ sync /* the MMU should be off... */
+
+
+in_flash:
+#if defined(CONFIG_BMW)
+ bl early_init_f /* Must be ASM: no stack yet! */
+#endif
+ /*
+ * Setup BATs - cannot be done in C since we don't have a stack yet
+ */
+ bl setup_bats
+
+ /* Enable MMU.
+ */
+ mfmsr r3
+ ori r3, r3, (MSR_IR | MSR_DR)
+ mtmsr r3
+#if !defined(CONFIG_BMW)
+ /* Enable and invalidate data cache.
+ */
+ mfspr r3, HID0
+ mr r2, r3
+ ori r3, r3, HID0_DCE | HID0_DCI
+ ori r2, r2, HID0_DCE
+ sync
+ mtspr HID0, r3
+ mtspr HID0, r2
+ sync
+
+ /* Allocate Initial RAM in data cache.
+ */
+ lis r3, CFG_INIT_RAM_ADDR@h
+ ori r3, r3, CFG_INIT_RAM_ADDR@l
+ li r2, 128
+ mtctr r2
+1:
+ dcbz r0, r3
+ addi r3, r3, 32
+ bdnz 1b
+
+ /* Lock way0 in data cache.
+ */
+ mfspr r3, 1011
+ lis r2, 0xffff
+ ori r2, r2, 0xff1f
+ and r3, r3, r2
+ ori r3, r3, 0x0080
+ sync
+ mtspr 1011, r3
+#endif /* !CONFIG_BMW */
+ /*
+ * Thisk the stack pointer *somewhere* sensible. Doesnt
+ * matter much where as we'll move it when we relocate
+ */
+ lis r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@h
+ ori r1, r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@l
+
+ li r0, 0 /* Make room for stack frame header and */
+ stwu r0, -4(r1) /* clear final stack frame so that */
+ stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+
+ /* let the C-code set up the rest */
+ /* */
+ /* Be careful to keep code relocatable ! */
+ /*----------------------------------------------------------------------*/
+
+ GET_GOT /* initialize GOT access */
+
+ /* r3: IMMR */
+ bl cpu_init_f /* run low-level CPU init code (from Flash) */
+
+ mr r3, r21
+ /* r3: BOOTFLAG */
+ bl board_init_f /* run 1st part of board init code (from Flash) */
+
+
+
+ .globl _start_of_vectors
+_start_of_vectors:
+
+/* Machine check */
+ STD_EXCEPTION(EXC_OFF_MACH_CHCK, MachineCheck, MachineCheckException)
+
+/* Data Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(EXC_OFF_DATA_STOR, DataStorage, UnknownException)
+
+/* Instruction Storage exception. "Never" generated on the 860. */
+ STD_EXCEPTION(EXC_OFF_INS_STOR, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+ STD_EXCEPTION(EXC_OFF_EXTERNAL, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+ . = EXC_OFF_ALIGN
+Alignment:
+ EXCEPTION_PROLOG
+ mfspr r4,DAR
+ stw r4,_DAR(r21)
+ mfspr r5,DSISR
+ stw r5,_DSISR(r21)
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_Alignment:
+ .long AlignmentException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+/* Program check exception */
+ . = EXC_OFF_PROGRAM
+ProgramCheck:
+ EXCEPTION_PROLOG
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ li r20,MSR_KERNEL
+ rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
+ lwz r6,GOT(transfer_to_handler)
+ mtlr r6
+ blrl
+.L_ProgramCheck:
+ .long ProgramCheckException - _start + EXC_OFF_SYS_RESET
+ .long int_return - _start + EXC_OFF_SYS_RESET
+
+ /* No FPU on MPC8xx. This exception is not supposed to happen.
+ */
+ STD_EXCEPTION(EXC_OFF_FPUNAVAIL, FPUnavailable, UnknownException)
+
+ /* I guess we could implement decrementer, and may have
+ * to someday for timekeeping.
+ */
+ STD_EXCEPTION(EXC_OFF_DECR, Decrementer, timer_interrupt)
+ STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
+ STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
+
+ . = 0xc00
+/*
+ * r0 - SYSCALL number
+ * r3-... arguments
+ */
+SystemCall:
+ addis r11,r0,0 /* get functions table addr */
+ ori r11,r11,0 /* Note: this code is patched in trap_init */
+ addis r12,r0,0 /* get number of functions */
+ ori r12,r12,0
+
+ cmplw 0, r0, r12
+ bge 1f
+
+ rlwinm r0,r0,2,0,31 /* fn_addr = fn_tbl[r0] */
+ add r11,r11,r0
+ lwz r11,0(r11)
+
+ li r12,0xd00-4*3 /* save LR & SRRx */
+ mflr r0
+ stw r0,0(r12)
+ mfspr r0,SRR0
+ stw r0,4(r12)
+ mfspr r0,SRR1
+ stw r0,8(r12)
+
+ li r12,0xc00+_back-SystemCall
+ mtlr r12
+ mtspr SRR0,r11
+
+1: SYNC
+ rfi
+
+_back:
+
+ mfmsr r11 /* Disable interrupts */
+ li r12,0
+ ori r12,r12,MSR_EE
+ andc r11,r11,r12
+ SYNC /* Some chip revs need this... */
+ mtmsr r11
+ SYNC
+
+ li r12,0xd00-4*3 /* restore regs */
+ lwz r11,0(r12)
+ mtlr r11
+ lwz r11,4(r12)
+ mtspr SRR0,r11
+ lwz r11,8(r12)
+ mtspr SRR1,r11
+
+ SYNC
+ rfi
+
+ STD_EXCEPTION(EXC_OFF_TRACE, SingleStep, UnknownException)
+
+ STD_EXCEPTION(EXC_OFF_FPUNASSIST, Trap_0e, UnknownException)
+ STD_EXCEPTION(EXC_OFF_PMI, Trap_0f, UnknownException)
+
+ STD_EXCEPTION(EXC_OFF_ITME, InstructionTransMiss, UnknownException)
+ STD_EXCEPTION(EXC_OFF_DLTME, DataLoadTransMiss, UnknownException)
+ STD_EXCEPTION(EXC_OFF_DSTME, DataStoreTransMiss, UnknownException)
+ STD_EXCEPTION(EXC_OFF_IABE, InstructionBreakpoint, UnknownException)
+ STD_EXCEPTION(EXC_OFF_SMIE, SysManageInt, UnknownException)
+ STD_EXCEPTION(0x1500, Reserved5, UnknownException)
+ STD_EXCEPTION(0x1600, Reserved6, UnknownException)
+ STD_EXCEPTION(0x1700, Reserved7, UnknownException)
+ STD_EXCEPTION(0x1800, Reserved8, UnknownException)
+ STD_EXCEPTION(0x1900, Reserved9, UnknownException)
+ STD_EXCEPTION(0x1a00, ReservedA, UnknownException)
+ STD_EXCEPTION(0x1b00, ReservedB, UnknownException)
+ STD_EXCEPTION(0x1c00, ReservedC, UnknownException)
+ STD_EXCEPTION(0x1d00, ReservedD, UnknownException)
+ STD_EXCEPTION(0x1e00, ReservedE, UnknownException)
+ STD_EXCEPTION(0x1f00, ReservedF, UnknownException)
+
+ STD_EXCEPTION(EXC_OFF_RMTE, RunModeTrace, UnknownException)
+
+ .globl _end_of_vectors
+_end_of_vectors:
+
+
+ . = 0x3000
+
+/*
+ * This code finishes saving the registers to the exception frame
+ * and jumps to the appropriate handler for the exception.
+ * Register r21 is pointer into trap frame, r1 has new stack pointer.
+ */
+ .globl transfer_to_handler
+transfer_to_handler:
+ stw r22,_NIP(r21)
+ lis r22,MSR_POW@h
+ andc r23,r23,r22
+ stw r23,_MSR(r21)
+ SAVE_GPR(7, r21)
+ SAVE_4GPRS(8, r21)
+ SAVE_8GPRS(12, r21)
+ SAVE_8GPRS(24, r21)
+#if 0
+ andi. r23,r23,MSR_PR
+ mfspr r23,SPRG3 /* if from user, fix up tss.regs */
+ beq 2f
+ addi r24,r1,STACK_FRAME_OVERHEAD
+ stw r24,PT_REGS(r23)
+2: addi r2,r23,-TSS /* set r2 to current */
+ tovirt(r2,r2,r23)
+#endif
+ mflr r23
+ andi. r24,r23,0x3f00 /* get vector offset */
+ stw r24,TRAP(r21)
+ li r22,0
+ stw r22,RESULT(r21)
+ mtspr SPRG2,r22 /* r1 is now kernel sp */
+#if 0
+ addi r24,r2,TASK_STRUCT_SIZE /* check for kernel stack overflow */
+ cmplw 0,r1,r2
+ cmplw 1,r1,r24
+ crand 1,1,4
+ bgt stack_ovf /* if r2 < r1 < r2+TASK_STRUCT_SIZE */
+#endif
+ lwz r24,0(r23) /* virtual address of handler */
+ lwz r23,4(r23) /* where to go when done */
+ mtspr SRR0,r24
+ ori r20,r20,0x30 /* enable IR, DR */
+ mtspr SRR1,r20
+ mtlr r23
+ SYNC
+ rfi /* jump to handler, enable MMU */
+
+int_return:
+ mfmsr r28 /* Disable interrupts */
+ li r4,0
+ ori r4,r4,MSR_EE
+ andc r28,r28,r4
+ SYNC /* Some chip revs need this... */
+ mtmsr r28
+ SYNC
+ lwz r2,_CTR(r1)
+ lwz r0,_LINK(r1)
+ mtctr r2
+ mtlr r0
+ lwz r2,_XER(r1)
+ lwz r0,_CCR(r1)
+ mtspr XER,r2
+ mtcrf 0xFF,r0
+ REST_10GPRS(3, r1)
+ REST_10GPRS(13, r1)
+ REST_8GPRS(23, r1)
+ REST_GPR(31, r1)
+ lwz r2,_NIP(r1) /* Restore environment */
+ lwz r0,_MSR(r1)
+ mtspr SRR0,r2
+ mtspr SRR1,r0
+ lwz r0,GPR0(r1)
+ lwz r2,GPR2(r1)
+ lwz r1,GPR1(r1)
+ SYNC
+ rfi
+
+/* Cache functions.
+*/
+ .globl icache_enable
+icache_enable:
+ mfspr r5,HID0 /* turn on the I cache. */
+ ori r5,r5,0x8800 /* Instruction cache only! */
+ addis r6,0,0xFFFF
+ ori r6,r6,0xF7FF
+ and r6,r5,r6 /* clear the invalidate bit */
+ sync
+ mtspr HID0,r5
+ mtspr HID0,r6
+ isync
+ sync
+ blr
+
+ .globl icache_disable
+icache_disable:
+ mfspr r5,HID0
+ addis r6,0,0xFFFF
+ ori r6,r6,0x7FFF
+ and r5,r5,r6
+ sync
+ mtspr HID0,r5
+ isync
+ sync
+ blr
+
+ .globl icache_status
+icache_status:
+ mfspr r3, HID0
+ srwi r3, r3, 15 /* >>15 & 1=> select bit 16 */
+ andi. r3, r3, 1
+ blr
+
+ .globl dcache_enable
+dcache_enable:
+ mfspr r5,HID0 /* turn on the D cache. */
+ ori r5,r5,0x4400 /* Data cache only! */
+ mfspr r4, PVR /* read PVR */
+ srawi r3, r4, 16 /* shift off the least 16 bits */
+ cmpi 0, 0, r3, 0xC /* Check for Max pvr */
+ bne NotMax
+ ori r5,r5,0x0040 /* setting the DCFA bit, for Max rev 1 errata */
+NotMax:
+ addis r6,0,0xFFFF
+ ori r6,r6,0xFBFF
+ and r6,r5,r6 /* clear the invalidate bit */
+ sync
+ mtspr HID0,r5
+ mtspr HID0,r6
+ isync
+ sync
+ blr
+
+ .globl dcache_disable
+dcache_disable:
+ mfspr r5,HID0
+ addis r6,0,0xFFFF
+ ori r6,r6,0xBFFF
+ and r5,r5,r6
+ sync
+ mtspr HID0,r5
+ isync
+ sync
+ blr
+
+ .globl dcache_status
+dcache_status:
+ mfspr r3, HID0
+ srwi r3, r3, 14 /* >>14 & 1=> select bit 17 */
+ andi. r3, r3, 1
+ blr
+
+ .globl dc_read
+dc_read:
+/*TODO : who uses this, what should it do?
+*/
+ blr
+
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+
+ mr r1, r3 /* Set new stack pointer */
+ mr r9, r4 /* Save copy of Global Data pointer */
+ mr r10, r5 /* Save copy of Destination Address */
+
+ mr r3, r5 /* Destination Address */
+#ifdef DEBUG
+ lis r4, CFG_SDRAM_BASE@h /* Source Address */
+ ori r4, r4, CFG_SDRAM_BASE@l
+#else
+ lis r4, CFG_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CFG_MONITOR_BASE@l
+#endif
+ lis r5, CFG_MONITOR_LEN@h /* Length in Bytes */
+ ori r5, r5, CFG_MONITOR_LEN@l
+ li r6, CFG_CACHELINE_SIZE /* Cache Line Size */
+
+ /*
+ * Fix GOT pointer:
+ *
+ * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address
+ *
+ * Offset:
+ */
+ sub r15, r10, r4
+
+ /* First our own GOT */
+ add r14, r14, r15
+ /* the the one used by the C code */
+ add r30, r30, r15
+
+ /*
+ * Now relocate code
+ */
+
+ cmplw cr1,r3,r4
+ addi r0,r5,3
+ srwi. r0,r0,2
+ beq cr1,4f /* In place copy is not necessary */
+ beq 7f /* Protect against 0 count */
+ mtctr r0
+ bge cr1,2f
+
+ la r8,-4(r4)
+ la r7,-4(r3)
+1: lwzu r0,4(r8)
+ stwu r0,4(r7)
+ bdnz 1b
+ b 4f
+
+2: slwi r0,r0,2
+ add r8,r4,r0
+ add r7,r3,r0
+3: lwzu r0,-4(r8)
+ stwu r0,-4(r7)
+ bdnz 3b
+
+/*
+ * Now flush the cache: note that we must start from a cache aligned
+ * address. Otherwise we might miss one cache line.
+ */
+4: cmpwi r6,0
+ add r5,r3,r5
+ beq 7f /* Always flush prefetch queue in any case */
+ subi r0,r6,1
+ andc r3,r3,r0
+ mr r4,r3
+5: dcbst 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 5b
+ sync /* Wait for all dcbst to complete on bus */
+ mr r4,r3
+6: icbi 0,r4
+ add r4,r4,r6
+ cmplw r4,r5
+ blt 6b
+7: sync /* Wait for all icbi to complete on bus */
+ isync
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+
+ addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+ mtlr r0
+ blr
+
+in_ram:
+
+ /*
+ * Relocation Function, r14 point to got2+0x8000
+ *
+ * Adjust got2 pointers, no need to check for 0, this code
+ * already puts a few entries in the table.
+ */
+ li r0,__got2_entries@sectoff@l
+ la r3,GOT(_GOT2_TABLE_)
+ lwz r11,GOT(_GOT2_TABLE_)
+ mtctr r0
+ sub r11,r3,r11
+ addi r3,r3,-4
+1: lwzu r0,4(r3)
+ add r0,r0,r11
+ stw r0,0(r3)
+ bdnz 1b
+
+ /*
+ * Now adjust the fixups and the pointers to the fixups
+ * in case we need to move ourselves again.
+ */
+2: li r0,__fixup_entries@sectoff@l
+ lwz r3,GOT(_FIXUP_TABLE_)
+ cmpwi r0,0
+ mtctr r0
+ addi r3,r3,-4
+ beq 4f
+3: lwzu r4,4(r3)
+ lwzux r0,r4,r11
+ add r0,r0,r11
+ stw r10,0(r3)
+ stw r0,0(r4)
+ bdnz 3b
+4:
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ lwz r3,GOT(.bss)
+ lwz r4,GOT(_end)
+
+ cmplw 0, r3, r4
+ beq 6f
+
+ li r0, 0
+5:
+ stw r0, 0(r3)
+ addi r3, r3, 4
+ cmplw 0, r3, r4
+ blt 5b
+6:
+
+ mr r3, r9 /* Global Data pointer */
+ mr r4, r10 /* Destination Address */
+ bl board_init_r
+
+ /* Problems accessing "end" in C, so do it here */
+ .globl get_endaddr
+get_endaddr:
+ lwz r3,GOT(_end)
+ blr
+
+ /*
+ * Copy exception vector code to low memory
+ *
+ * r3: dest_addr
+ * r7: source address, r8: end address, r9: target address
+ */
+ .globl trap_init
+trap_init:
+ lwz r7, GOT(_start)
+ lwz r8, GOT(_end_of_vectors)
+
+ rlwinm r9, r7, 0, 18, 31 /* _start & 0x3FFF */
+
+ cmplw 0, r7, r8
+ bgelr /* return if r7>=r8 - just in case */
+
+ mflr r4 /* save link register */
+1:
+ lwz r0, 0(r7)
+ stw r0, 0(r9)
+ addi r7, r7, 4
+ addi r9, r9, 4
+ cmplw 0, r7, r8
+ bne 1b
+
+ /*
+ * relocate `hdlr' and `int_return' entries
+ */
+ li r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
+ li r8, Alignment - _start + EXC_OFF_SYS_RESET
+2:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 2b
+
+ li r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+ bl trap_reloc
+
+ li r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
+ li r8, SystemCall - _start + EXC_OFF_SYS_RESET
+3:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 3b
+
+ li r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
+ li r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
+4:
+ bl trap_reloc
+ addi r7, r7, 0x100 /* next exception vector */
+ cmplw 0, r7, r8
+ blt 4b
+
+ mtlr r4 /* restore link register */
+ blr
+
+ /*
+ * Function: relocate entries for one exception vector
+ */
+trap_reloc:
+ lwz r0, 0(r7) /* hdlr ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 0(r7)
+
+ lwz r0, 4(r7) /* int_return ... */
+ add r0, r0, r3 /* ... += dest_addr */
+ stw r0, 4(r7)
+
+ blr
+
+ /* Setup the BAT registers.
+ */
+setup_bats:
+ lis r4, CFG_IBAT0L@h
+ ori r4, r4, CFG_IBAT0L@l
+ lis r3, CFG_IBAT0U@h
+ ori r3, r3, CFG_IBAT0U@l
+ mtspr IBAT0L, r4
+ mtspr IBAT0U, r3
+ isync
+
+ lis r4, CFG_DBAT0L@h
+ ori r4, r4, CFG_DBAT0L@l
+ lis r3, CFG_DBAT0U@h
+ ori r3, r3, CFG_DBAT0U@l
+ mtspr DBAT0L, r4
+ mtspr DBAT0U, r3
+ isync
+
+ lis r4, CFG_IBAT1L@h
+ ori r4, r4, CFG_IBAT1L@l
+ lis r3, CFG_IBAT1U@h
+ ori r3, r3, CFG_IBAT1U@l
+ mtspr IBAT1L, r4
+ mtspr IBAT1U, r3
+ isync
+
+ lis r4, CFG_DBAT1L@h
+ ori r4, r4, CFG_DBAT1L@l
+ lis r3, CFG_DBAT1U@h
+ ori r3, r3, CFG_DBAT1U@l
+ mtspr DBAT1L, r4
+ mtspr DBAT1U, r3
+ isync
+
+ lis r4, CFG_IBAT2L@h
+ ori r4, r4, CFG_IBAT2L@l
+ lis r3, CFG_IBAT2U@h
+ ori r3, r3, CFG_IBAT2U@l
+ mtspr IBAT2L, r4
+ mtspr IBAT2U, r3
+ isync
+
+ lis r4, CFG_DBAT2L@h
+ ori r4, r4, CFG_DBAT2L@l
+ lis r3, CFG_DBAT2U@h
+ ori r3, r3, CFG_DBAT2U@l
+ mtspr DBAT2L, r4
+ mtspr DBAT2U, r3
+ isync
+
+ lis r4, CFG_IBAT3L@h
+ ori r4, r4, CFG_IBAT3L@l
+ lis r3, CFG_IBAT3U@h
+ ori r3, r3, CFG_IBAT3U@l
+ mtspr IBAT3L, r4
+ mtspr IBAT3U, r3
+ isync
+
+ lis r4, CFG_DBAT3L@h
+ ori r4, r4, CFG_DBAT3L@l
+ lis r3, CFG_DBAT3U@h
+ ori r3, r3, CFG_DBAT3U@l
+ mtspr DBAT3L, r4
+ mtspr DBAT3U, r3
+ isync
+
+ /* Invalidate TLBs.
+ * -> for (val = 0; val < 0x20000; val+=0x1000)
+ * -> tlbie(val);
+ */
+ lis r3, 0
+ lis r5, 2
+
+1:
+ tlbie r3
+ addi r3, r3, 0x1000
+ cmp 0, 0, r3, r5
+ blt 1b
+
+ blr
+
+
diff --git a/cpu/mpc8260/cpu_init.c b/cpu/mpc8260/cpu_init.c
new file mode 100644
index 0000000..9f9369a
--- /dev/null
+++ b/cpu/mpc8260/cpu_init.c
@@ -0,0 +1,264 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <mpc8260.h>
+#include <asm/cpm_8260.h>
+#include <ioports.h>
+
+static void config_8260_ioports (volatile immap_t * immr)
+{
+ int portnum;
+
+ for (portnum = 0; portnum < 4; portnum++) {
+ uint pmsk = 0,
+ ppar = 0,
+ psor = 0,
+ pdir = 0,
+ podr = 0,
+ pdat = 0;
+ iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
+ iop_conf_t *eiopc = iopc + 32;
+ uint msk = 1;
+
+ /*
+ * NOTE:
+ * index 0 refers to pin 31,
+ * index 31 refers to pin 0
+ */
+ while (iopc < eiopc) {
+ if (iopc->conf) {
+ pmsk |= msk;
+ if (iopc->ppar)
+ ppar |= msk;
+ if (iopc->psor)
+ psor |= msk;
+ if (iopc->pdir)
+ pdir |= msk;
+ if (iopc->podr)
+ podr |= msk;
+ if (iopc->pdat)
+ pdat |= msk;
+ }
+
+ msk <<= 1;
+ iopc++;
+ }
+
+ if (pmsk != 0) {
+ volatile ioport_t *iop = ioport_addr (immr, portnum);
+ uint tpmsk = ~pmsk;
+
+ /*
+ * the (somewhat confused) paragraph at the
+ * bottom of page 35-5 warns that there might
+ * be "unknown behaviour" when programming
+ * PSORx and PDIRx, if PPARx = 1, so I
+ * decided this meant I had to disable the
+ * dedicated function first, and enable it
+ * last.
+ */
+ iop->ppar &= tpmsk;
+ iop->psor = (iop->psor & tpmsk) | psor;
+ iop->pdat = (iop->pdat & tpmsk) | pdat;
+ iop->pdir = (iop->pdir & tpmsk) | pdir;
+ iop->podr = (iop->podr & tpmsk) | podr;
+ iop->ppar |= ppar;
+ }
+ }
+}
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f (volatile immap_t * immr)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile memctl8260_t *memctl = &immr->im_memctl;
+ extern void m8260_cpm_reset (void);
+
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
+
+ /* Clear initial global data */
+ memset ((void *) gd, 0, sizeof (gd_t));
+
+ /* RSR - Reset Status Register - clear all status (5-4) */
+ gd->reset_status = immr->im_clkrst.car_rsr;
+ immr->im_clkrst.car_rsr = RSR_ALLBITS;
+
+ /* RMR - Reset Mode Register - contains checkstop reset enable (5-5) */
+ immr->im_clkrst.car_rmr = CFG_RMR;
+
+ /* BCR - Bus Configuration Register (4-25) */
+ immr->im_siu_conf.sc_bcr = CFG_BCR;
+
+ /* SIUMCR - contains debug pin configuration (4-31) */
+ immr->im_siu_conf.sc_siumcr = CFG_SIUMCR;
+
+ config_8260_ioports (immr);
+
+ /* initialize time counter status and control register (4-40) */
+ immr->im_sit.sit_tmcntsc = CFG_TMCNTSC;
+
+ /* initialize the PIT (4-42) */
+ immr->im_sit.sit_piscr = CFG_PISCR;
+
+#if !defined(CONFIG_COGENT) /* done in start.S for the cogent */
+ /* System clock control register (9-8) */
+ immr->im_clkrst.car_sccr = CFG_SCCR;
+#endif /* !CONFIG_COGENT */
+
+ /*
+ * Memory Controller:
+ */
+
+ /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
+ * addresses - these have to be modified later when FLASH size
+ * has been determined
+ */
+
+#if defined(CFG_OR0_REMAP)
+ memctl->memc_or0 = CFG_OR0_REMAP;
+#endif
+#if defined(CFG_OR1_REMAP)
+ memctl->memc_or1 = CFG_OR1_REMAP;
+#endif
+
+ /* now restrict to preliminary range */
+ memctl->memc_br0 = CFG_BR0_PRELIM;
+ memctl->memc_or0 = CFG_OR0_PRELIM;
+
+#if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
+ memctl->memc_or1 = CFG_OR1_PRELIM;
+ memctl->memc_br1 = CFG_BR1_PRELIM;
+#endif
+
+#if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
+ memctl->memc_or2 = CFG_OR2_PRELIM;
+ memctl->memc_br2 = CFG_BR2_PRELIM;
+#endif
+
+#if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
+ memctl->memc_or3 = CFG_OR3_PRELIM;
+ memctl->memc_br3 = CFG_BR3_PRELIM;
+#endif
+
+#if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
+ memctl->memc_or4 = CFG_OR4_PRELIM;
+ memctl->memc_br4 = CFG_BR4_PRELIM;
+#endif
+
+#if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
+ memctl->memc_or5 = CFG_OR5_PRELIM;
+ memctl->memc_br5 = CFG_BR5_PRELIM;
+#endif
+
+#if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
+ memctl->memc_or6 = CFG_OR6_PRELIM;
+ memctl->memc_br6 = CFG_BR6_PRELIM;
+#endif
+
+#if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
+ memctl->memc_or7 = CFG_OR7_PRELIM;
+ memctl->memc_br7 = CFG_BR7_PRELIM;
+#endif
+
+#if defined(CFG_BR8_PRELIM) && defined(CFG_OR8_PRELIM)
+ memctl->memc_or8 = CFG_OR8_PRELIM;
+ memctl->memc_br8 = CFG_BR8_PRELIM;
+#endif
+
+#if defined(CFG_BR9_PRELIM) && defined(CFG_OR9_PRELIM)
+ memctl->memc_or9 = CFG_OR9_PRELIM;
+ memctl->memc_br9 = CFG_BR9_PRELIM;
+#endif
+
+#if defined(CFG_BR10_PRELIM) && defined(CFG_OR10_PRELIM)
+ memctl->memc_or10 = CFG_OR10_PRELIM;
+ memctl->memc_br10 = CFG_BR10_PRELIM;
+#endif
+
+#if defined(CFG_BR11_PRELIM) && defined(CFG_OR11_PRELIM)
+ memctl->memc_or11 = CFG_OR11_PRELIM;
+ memctl->memc_br11 = CFG_BR11_PRELIM;
+#endif
+
+ m8260_cpm_reset ();
+}
+
+/*
+ * initialize higher level parts of CPU like time base and timers
+ */
+int cpu_init_r (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile immap_t *immr = (immap_t *) gd->bd->bi_immr_base;
+
+ immr->im_cpm.cp_rccr = CFG_RCCR;
+
+ return (0);
+}
+
+/*
+ * print out the reason for the reset
+ */
+int prt_8260_rsr (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ static struct {
+ ulong mask;
+ char *desc;
+ } bits[] = {
+ {
+ RSR_JTRS, "JTAG"}, {
+ RSR_CSRS, "Check Stop"}, {
+ RSR_SWRS, "Software Watchdog"}, {
+ RSR_BMRS, "Bus Monitor"}, {
+ RSR_ESRS, "External Soft"}, {
+ RSR_EHRS, "External Hard"}
+ };
+ static int n = sizeof bits / sizeof bits[0];
+ ulong rsr = gd->reset_status;
+ int i;
+ char *sep;
+
+ puts ("MPC8260 Reset Status:");
+
+ sep = " ";
+ for (i = 0; i < n; i++)
+ if (rsr & bits[i].mask) {
+ printf ("%s%s", sep, bits[i].desc);
+ sep = ", ";
+ }
+
+ puts ("\n\n");
+ return (0);
+}
diff --git a/cpu/mpc8260/i2c.c b/cpu/mpc8260/i2c.c
new file mode 100644
index 0000000..8bfa2e8
--- /dev/null
+++ b/cpu/mpc8260/i2c.c
@@ -0,0 +1,733 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#if defined(CONFIG_HARD_I2C)
+
+#include <asm/cpm_8260.h>
+#include <i2c.h>
+
+/* define to enable debug messages */
+#undef DEBUG_I2C
+
+/* uSec to wait between polls of the i2c */
+#define DELAY_US 100
+/* uSec to wait for the CPM to start processing the buffer */
+#define START_DELAY_US 1000
+
+/*
+ * tx/rx per-byte timeout: we delay DELAY_US uSec between polls so the
+ * timeout will be (tx_length + rx_length) * DELAY_US * TOUT_LOOP
+ */
+#define TOUT_LOOP 5
+
+/*-----------------------------------------------------------------------
+ * Set default values
+ */
+#ifndef CFG_I2C_SPEED
+#define CFG_I2C_SPEED 50000
+#endif
+
+#ifndef CFG_I2C_SLAVE
+#define CFG_I2C_SLAVE 0xFE
+#endif
+/*-----------------------------------------------------------------------
+ */
+
+typedef void (*i2c_ecb_t)(int, int); /* error callback function */
+
+/* This structure keeps track of the bd and buffer space usage. */
+typedef struct i2c_state {
+ int rx_idx; /* index to next free Rx BD */
+ int tx_idx; /* index to next free Tx BD */
+ void *rxbd; /* pointer to next free Rx BD */
+ void *txbd; /* pointer to next free Tx BD */
+ int tx_space; /* number of Tx bytes left */
+ unsigned char *tx_buf; /* pointer to free Tx area */
+ i2c_ecb_t err_cb; /* error callback function */
+} i2c_state_t;
+
+/* flags for i2c_send() and i2c_receive() */
+#define I2CF_ENABLE_SECONDARY 0x01 /* secondary_address is valid */
+#define I2CF_START_COND 0x02 /* tx: generate start condition */
+#define I2CF_STOP_COND 0x04 /* tx: generate stop condition */
+
+/* return codes */
+#define I2CERR_NO_BUFFERS 0x01 /* no more BDs or buffer space */
+#define I2CERR_MSG_TOO_LONG 0x02 /* tried to send/receive to much data */
+#define I2CERR_TIMEOUT 0x03 /* timeout in i2c_doio() */
+#define I2CERR_QUEUE_EMPTY 0x04 /* i2c_doio called without send/receive */
+
+/* error callback flags */
+#define I2CECB_RX_ERR 0x10 /* this is a receive error */
+#define I2CECB_RX_ERR_OV 0x02 /* receive overrun error */
+#define I2CECB_RX_MASK 0x0f /* mask for error bits */
+#define I2CECB_TX_ERR 0x20 /* this is a transmit error */
+#define I2CECB_TX_CL 0x01 /* transmit collision error */
+#define I2CECB_TX_UN 0x02 /* transmit underflow error */
+#define I2CECB_TX_NAK 0x04 /* transmit no ack error */
+#define I2CECB_TX_MASK 0x0f /* mask for error bits */
+#define I2CECB_TIMEOUT 0x40 /* this is a timeout error */
+
+#define ERROR_I2C_NONE 0
+#define ERROR_I2C_LENGTH 1
+
+#define I2C_WRITE_BIT 0x00
+#define I2C_READ_BIT 0x01
+
+#define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */
+
+
+#define NUM_RX_BDS 4
+#define NUM_TX_BDS 4
+#define MAX_TX_SPACE 256
+
+typedef struct I2C_BD
+{
+ unsigned short status;
+ unsigned short length;
+ unsigned char *addr;
+} I2C_BD;
+#define BD_I2C_TX_START 0x0400 /* special status for i2c: Start condition */
+
+#define BD_I2C_TX_CL 0x0001 /* collision error */
+#define BD_I2C_TX_UN 0x0002 /* underflow error */
+#define BD_I2C_TX_NAK 0x0004 /* no acknowledge error */
+#define BD_I2C_TX_ERR (BD_I2C_TX_NAK|BD_I2C_TX_UN|BD_I2C_TX_CL)
+
+#define BD_I2C_RX_ERR BD_SC_OV
+
+#ifdef DEBUG_I2C
+#define PRINTD(x) printf x
+#else
+#define PRINTD(x)
+#endif
+
+/*
+ * Returns the best value of I2BRG to meet desired clock speed of I2C with
+ * input parameters (clock speed, filter, and predivider value).
+ * It returns computer speed value and the difference between it and desired
+ * speed.
+ */
+static inline int
+i2c_roundrate(int hz, int speed, int filter, int modval,
+ int *brgval, int *totspeed)
+{
+ int moddiv = 1 << (5-(modval & 3)), brgdiv, div;
+
+ PRINTD(("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
+ hz, speed, filter, modval));
+
+ div = moddiv * speed;
+ brgdiv = (hz + div - 1) / div;
+
+ PRINTD(("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv));
+
+ *brgval = (brgdiv / 2) - 3 - (2*filter);
+
+ if ((*brgval < 0) || (*brgval > 255)) {
+ PRINTD(("\t\trejected brgval=%d\n", *brgval));
+ return -1;
+ }
+
+ brgdiv = 2 * (*brgval + 3 + (2 * filter));
+ div = moddiv * brgdiv ;
+ *totspeed = (hz + div - 1) / div;
+
+ PRINTD(("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed));
+
+ return 0;
+}
+
+/*
+ * Sets the I2C clock predivider and divider to meet required clock speed.
+ */
+static int i2c_setrate(int hz, int speed)
+{
+ immap_t *immap = (immap_t *)CFG_IMMR ;
+ volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
+ int brgval,
+ modval, /* 0-3 */
+ bestspeed_diff = speed,
+ bestspeed_brgval=0,
+ bestspeed_modval=0,
+ bestspeed_filter=0,
+ totspeed,
+ filter = 0; /* Use this fixed value */
+
+ for (modval = 0; modval < 4; modval++)
+ {
+ if (i2c_roundrate (hz, speed, filter, modval, &brgval, &totspeed) == 0)
+ {
+ int diff = speed - totspeed ;
+
+ if ((diff >= 0) && (diff < bestspeed_diff))
+ {
+ bestspeed_diff = diff ;
+ bestspeed_modval = modval;
+ bestspeed_brgval = brgval;
+ bestspeed_filter = filter;
+ }
+ }
+ }
+
+ PRINTD(("[I2C] Best is:\n"));
+ PRINTD(("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
+ hz, speed,
+ bestspeed_filter, bestspeed_modval, bestspeed_brgval,
+ bestspeed_diff));
+
+ i2c->i2c_i2mod |= ((bestspeed_modval & 3) << 1) | (bestspeed_filter << 3);
+ i2c->i2c_i2brg = bestspeed_brgval & 0xff;
+
+ PRINTD(("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod, i2c->i2c_i2brg));
+
+ return 1 ;
+}
+
+void i2c_init(int speed, int slaveadd)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile immap_t *immap = (immap_t *)CFG_IMMR ;
+ volatile cpm8260_t *cp = (cpm8260_t *)&immap->im_cpm;
+ volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
+ volatile iic_t *iip;
+ ulong rbase, tbase;
+ volatile I2C_BD *rxbd, *txbd;
+ uint dpaddr;
+
+ dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ if (dpaddr == 0) {
+ /* need to allocate dual port ram */
+ dpaddr = m8260_cpm_dpalloc(64 +
+ (NUM_RX_BDS * sizeof(I2C_BD)) + (NUM_TX_BDS * sizeof(I2C_BD)) +
+ MAX_TX_SPACE, 64);
+ *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE])) = dpaddr;
+ }
+
+ /*
+ * initialise data in dual port ram:
+ *
+ * dpaddr -> parameter ram (64 bytes)
+ * rbase -> rx BD (NUM_RX_BDS * sizeof(I2C_BD) bytes)
+ * tbase -> tx BD (NUM_TX_BDS * sizeof(I2C_BD) bytes)
+ * tx buffer (MAX_TX_SPACE bytes)
+ */
+
+ iip = (iic_t *)&immap->im_dprambase[dpaddr];
+ memset((void*)iip, 0, sizeof(iic_t));
+
+ rbase = dpaddr + 64;
+ tbase = rbase + NUM_RX_BDS * sizeof(I2C_BD);
+
+ /* Disable interrupts */
+ i2c->i2c_i2mod = 0x00;
+ i2c->i2c_i2cmr = 0x00;
+ i2c->i2c_i2cer = 0xff;
+ i2c->i2c_i2add = slaveadd;
+
+ /*
+ * Set the I2C BRG Clock division factor from desired i2c rate
+ * and current CPU rate (we assume sccr dfbgr field is 0;
+ * divide BRGCLK by 1)
+ */
+ PRINTD(("[I2C] Setting rate...\n"));
+ i2c_setrate (gd->brg_clk, CFG_I2C_SPEED) ;
+
+ /* Set I2C controller in master mode */
+ i2c->i2c_i2com = 0x01;
+
+ /* Initialize Tx/Rx parameters */
+ iip->iic_rbase = rbase;
+ iip->iic_tbase = tbase;
+ rxbd = (I2C_BD *)((unsigned char *)&immap->im_dprambase[iip->iic_rbase]);
+ txbd = (I2C_BD *)((unsigned char *)&immap->im_dprambase[iip->iic_tbase]);
+
+ PRINTD(("[I2C] rbase = %04x\n", iip->iic_rbase));
+ PRINTD(("[I2C] tbase = %04x\n", iip->iic_tbase));
+ PRINTD(("[I2C] rxbd = %08x\n", (int)rxbd));
+ PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
+
+ /* Set big endian byte order */
+ iip->iic_tfcr = 0x10;
+ iip->iic_rfcr = 0x10;
+
+ /* Set maximum receive size. */
+ iip->iic_mrblr = I2C_RXTX_LEN;
+
+ cp->cp_cpcr = mk_cr_cmd(CPM_CR_I2C_PAGE,
+ CPM_CR_I2C_SBLOCK,
+ 0x00,
+ CPM_CR_INIT_TRX) | CPM_CR_FLG;
+ do {
+ __asm__ __volatile__ ("eieio");
+ } while (cp->cp_cpcr & CPM_CR_FLG);
+
+ /* Clear events and interrupts */
+ i2c->i2c_i2cer = 0xff;
+ i2c->i2c_i2cmr = 0x00;
+}
+
+static
+void i2c_newio(i2c_state_t *state)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR ;
+ volatile iic_t *iip;
+ uint dpaddr;
+
+ PRINTD(("[I2C] i2c_newio\n"));
+
+ dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ iip = (iic_t *)&immap->im_dprambase[dpaddr];
+ state->rx_idx = 0;
+ state->tx_idx = 0;
+ state->rxbd = (void*)&immap->im_dprambase[iip->iic_rbase];
+ state->txbd = (void*)&immap->im_dprambase[iip->iic_tbase];
+ state->tx_space = MAX_TX_SPACE;
+ state->tx_buf = (uchar*)state->txbd + NUM_TX_BDS * sizeof(I2C_BD);
+ state->err_cb = NULL;
+
+ PRINTD(("[I2C] rxbd = %08x\n", (int)state->rxbd));
+ PRINTD(("[I2C] txbd = %08x\n", (int)state->txbd));
+ PRINTD(("[I2C] tx_buf = %08x\n", (int)state->tx_buf));
+
+ /* clear the buffer memory */
+ memset((char *)state->tx_buf, 0, MAX_TX_SPACE);
+}
+
+static
+int i2c_send(i2c_state_t *state,
+ unsigned char address,
+ unsigned char secondary_address,
+ unsigned int flags,
+ unsigned short size,
+ unsigned char *dataout)
+{
+ volatile I2C_BD *txbd;
+ int i,j;
+
+ PRINTD(("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
+ address, secondary_address, flags, size));
+
+ /* trying to send message larger than BD */
+ if (size > I2C_RXTX_LEN)
+ return I2CERR_MSG_TOO_LONG;
+
+ /* no more free bds */
+ if (state->tx_idx >= NUM_TX_BDS || state->tx_space < (2 + size))
+ return I2CERR_NO_BUFFERS;
+
+ txbd = (I2C_BD *)state->txbd;
+ txbd->addr = state->tx_buf;
+
+ PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
+
+ if (flags & I2CF_START_COND)
+ {
+ PRINTD(("[I2C] Formatting addresses...\n"));
+ if (flags & I2CF_ENABLE_SECONDARY)
+ {
+ txbd->length = size + 2; /* Length of message plus dest addresses */
+ txbd->addr[0] = address << 1;
+ txbd->addr[1] = secondary_address;
+ i = 2;
+ }
+ else
+ {
+ txbd->length = size + 1; /* Length of message plus dest address */
+ txbd->addr[0] = address << 1; /* Write destination address to BD */
+ i = 1;
+ }
+ }
+ else
+ {
+ txbd->length = size; /* Length of message */
+ i = 0;
+ }
+
+ /* set up txbd */
+ txbd->status = BD_SC_READY;
+ if (flags & I2CF_START_COND)
+ txbd->status |= BD_I2C_TX_START;
+ if (flags & I2CF_STOP_COND)
+ txbd->status |= BD_SC_LAST | BD_SC_WRAP;
+
+ /* Copy data to send into buffer */
+ PRINTD(("[I2C] copy data...\n"));
+ for(j = 0; j < size; i++, j++)
+ txbd->addr[i] = dataout[j];
+
+ PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length,
+ txbd->status,
+ txbd->addr[0],
+ txbd->addr[1]));
+
+ /* advance state */
+ state->tx_buf += txbd->length;
+ state->tx_space -= txbd->length;
+ state->tx_idx++;
+ state->txbd = (void*)(txbd + 1);
+
+ return 0;
+}
+
+static
+int i2c_receive(i2c_state_t *state,
+ unsigned char address,
+ unsigned char secondary_address,
+ unsigned int flags,
+ unsigned short size_to_expect,
+ unsigned char *datain)
+{
+ volatile I2C_BD *rxbd, *txbd;
+
+ PRINTD(("[I2C] i2c_receive %02d %02d %02d\n", address, secondary_address, flags));
+
+ /* Expected to receive too much */
+ if (size_to_expect > I2C_RXTX_LEN)
+ return I2CERR_MSG_TOO_LONG;
+
+ /* no more free bds */
+ if (state->tx_idx >= NUM_TX_BDS || state->rx_idx >= NUM_RX_BDS
+ || state->tx_space < 2)
+ return I2CERR_NO_BUFFERS;
+
+ rxbd = (I2C_BD *)state->rxbd;
+ txbd = (I2C_BD *)state->txbd;
+
+ PRINTD(("[I2C] rxbd = %08x\n", (int)rxbd));
+ PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
+
+ txbd->addr = state->tx_buf;
+
+ /* set up TXBD for destination address */
+ if (flags & I2CF_ENABLE_SECONDARY)
+ {
+ txbd->length = 2;
+ txbd->addr[0] = address << 1; /* Write data */
+ txbd->addr[1] = secondary_address; /* Internal address */
+ txbd->status = BD_SC_READY;
+ }
+ else
+ {
+ txbd->length = 1 + size_to_expect;
+ txbd->addr[0] = (address << 1) | 0x01;
+ txbd->status = BD_SC_READY;
+ memset(&txbd->addr[1], 0, txbd->length);
+ }
+
+ /* set up rxbd for reception */
+ rxbd->status = BD_SC_EMPTY;
+ rxbd->length = size_to_expect;
+ rxbd->addr = datain;
+
+ txbd->status |= BD_I2C_TX_START;
+ if (flags & I2CF_STOP_COND)
+ {
+ txbd->status |= BD_SC_LAST | BD_SC_WRAP;
+ rxbd->status |= BD_SC_WRAP;
+ }
+
+ PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ txbd->length,
+ txbd->status,
+ txbd->addr[0],
+ txbd->addr[1]));
+ PRINTD(("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
+ rxbd->length,
+ rxbd->status,
+ rxbd->addr[0],
+ rxbd->addr[1]));
+
+ /* advance state */
+ state->tx_buf += txbd->length;
+ state->tx_space -= txbd->length;
+ state->tx_idx++;
+ state->txbd = (void*)(txbd + 1);
+ state->rx_idx++;
+ state->rxbd = (void*)(rxbd + 1);
+
+ return 0;
+}
+
+
+static
+int i2c_doio(i2c_state_t *state)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR ;
+ volatile iic_t *iip;
+ volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
+ volatile I2C_BD *txbd, *rxbd;
+ int j;
+ int timeout;
+ uint dpaddr;
+
+ PRINTD(("[I2C] i2c_doio\n"));
+
+ timeout = TOUT_LOOP * 256; /* arbitrarily long */
+
+ if (state->tx_idx <= 0 && state->rx_idx <= 0) {
+ PRINTD(("[I2C] No I/O is queued\n"));
+ return I2CERR_QUEUE_EMPTY;
+ }
+
+ dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+ iip = (iic_t *)&immap->im_dprambase[dpaddr];
+ iip->iic_rbptr = iip->iic_rbase;
+ iip->iic_tbptr = iip->iic_tbase;
+
+ /* Enable I2C */
+ PRINTD(("[I2C] Enabling I2C...\n"));
+ i2c->i2c_i2mod |= 0x01;
+
+ /* Begin transmission */
+ i2c->i2c_i2com |= 0x80;
+
+ /* Loop until transmit & receive completed */
+
+ txbd = ((I2C_BD*)state->txbd) - 1;
+ j = 0;
+ if (state->tx_idx > 0) {
+ timeout = TOUT_LOOP * txbd->length;
+
+ PRINTD(("[I2C] Transmitting...(txbd=0x%08lx)\n", (ulong)txbd));
+ udelay(START_DELAY_US); /* give it time to start */
+ while((txbd->status & BD_SC_READY) && (j++ < timeout)) {
+ udelay(DELAY_US);
+ if (ctrlc())
+ return (-1);
+ __asm__ __volatile__ ("eieio");
+ }
+ }
+
+ rxbd = ((I2C_BD*)state->rxbd) - 1;
+ j = 0;
+ if ((state->rx_idx > 0) && (j < timeout)) {
+ timeout = TOUT_LOOP * rxbd->length;
+ PRINTD(("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong)rxbd));
+ udelay(START_DELAY_US); /* give it time to start */
+ while((rxbd->status & BD_SC_EMPTY) && (j++ < timeout)) {
+ udelay(DELAY_US);
+ if (ctrlc())
+ return (-1);
+ __asm__ __volatile__ ("eieio");
+ }
+ }
+
+ /* Turn off I2C */
+ i2c->i2c_i2mod &= ~0x01;
+
+ if (state->err_cb != NULL) {
+ int n, i, b;
+
+ /*
+ * if we have an error callback function, look at the
+ * error bits in the bd status and pass them back
+ */
+
+ if ((n = state->tx_idx) > 0) {
+ for (i = 0; i < n; i++) {
+ txbd = ((I2C_BD*)state->txbd) - (n - i);
+ if ((b = txbd->status & BD_I2C_TX_ERR) != 0)
+ (*state->err_cb)(I2CECB_TX_ERR|b, i);
+ }
+ }
+
+ if ((n = state->rx_idx) > 0) {
+ for (i = 0; i < n; i++) {
+ rxbd = ((I2C_BD*)state->rxbd) - (n - i);
+ if ((b = rxbd->status & BD_I2C_RX_ERR) != 0)
+ (*state->err_cb)(I2CECB_RX_ERR|b, i);
+ }
+ }
+
+ if (j >= timeout)
+ (*state->err_cb)(I2CECB_TIMEOUT, 0);
+ }
+
+ /* sort out errors and return appropriate good/error status */
+ if(j >= timeout)
+ return(I2CERR_TIMEOUT);
+ if((txbd->status & BD_I2C_TX_ERR) != 0)
+ return(I2CECB_TX_ERR | (txbd->status & I2CECB_TX_MASK));
+ if((rxbd->status & BD_I2C_RX_ERR) != 0)
+ return(I2CECB_RX_ERR | (rxbd->status & I2CECB_RX_MASK));
+
+ return(0);
+}
+
+static int had_tx_nak;
+
+static void
+i2c_test_callback(int flags, int xnum)
+{
+ if ((flags & I2CECB_TX_ERR) && (flags & I2CECB_TX_NAK))
+ had_tx_nak = 1;
+}
+
+int i2c_probe(uchar chip)
+{
+ i2c_state_t state;
+ int rc;
+ uchar buf[1];
+
+ i2c_newio(&state);
+
+ state.err_cb = i2c_test_callback;
+ had_tx_nak = 0;
+
+ rc = i2c_receive(&state, chip, 0, I2CF_START_COND|I2CF_STOP_COND, 1, buf);
+
+ if (rc != 0)
+ return (rc);
+
+ rc = i2c_doio(&state);
+
+ if ((rc != 0) && (rc != I2CERR_TIMEOUT))
+ return (rc);
+
+ return (had_tx_nak);
+}
+
+
+int
+i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ i2c_state_t state;
+ uchar xaddr[4];
+ int rc;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of address
+ * and the extra bits end up in the "chip address" bit slots.
+ * This makes a 24WC08 (1Kbyte) chip look like four 256 byte
+ * chips.
+ *
+ * Note that we consider the length of the address field to still
+ * be one byte because the extra address bits are hidden in the
+ * chip address.
+ */
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+
+ i2c_newio(&state);
+
+ rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen, &xaddr[4-alen]);
+ if (rc != 0) {
+ printf("i2c_read: i2c_send failed (%d)\n", rc);
+ return 1;
+ }
+
+ rc = i2c_receive(&state, chip, 0, I2CF_STOP_COND, len, buffer);
+ if (rc != 0) {
+ printf("i2c_read: i2c_receive failed (%d)\n", rc);
+ return 1;
+ }
+
+ rc = i2c_doio(&state);
+ if (rc != 0) {
+ printf("i2c_read: i2c_doio failed (%d)\n", rc);
+ return 1;
+ }
+ return 0;
+}
+
+int
+i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ i2c_state_t state;
+ uchar xaddr[4];
+ int rc;
+
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of address
+ * and the extra bits end up in the "chip address" bit slots.
+ * This makes a 24WC08 (1Kbyte) chip look like four 256 byte
+ * chips.
+ *
+ * Note that we consider the length of the address field to still
+ * be one byte because the extra address bits are hidden in the
+ * chip address.
+ */
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+
+ i2c_newio(&state);
+
+ rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen, &xaddr[4-alen]);
+ if (rc != 0) {
+ printf("i2c_write: first i2c_send failed (%d)\n", rc);
+ return 1;
+ }
+
+ rc = i2c_send(&state, 0, 0, I2CF_STOP_COND, len, buffer);
+ if (rc != 0) {
+ printf("i2c_write: second i2c_send failed (%d)\n", rc);
+ return 1;
+ }
+
+ rc = i2c_doio(&state);
+ if (rc != 0) {
+ printf("i2c_write: i2c_doio failed (%d)\n", rc);
+ return 1;
+ }
+ return 0;
+}
+
+uchar
+i2c_reg_read(uchar chip, uchar reg)
+{
+ char buf;
+
+ i2c_read(chip, reg, 1, &buf, 1);
+
+ return (buf);
+}
+
+void
+i2c_reg_write(uchar chip, uchar reg, uchar val)
+{
+ i2c_write(chip, reg, 1, &val, 1);
+}
+
+#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/mpc8xx/cpu.c b/cpu/mpc8xx/cpu.c
new file mode 100644
index 0000000..b1b58b0
--- /dev/null
+++ b/cpu/mpc8xx/cpu.c
@@ -0,0 +1,516 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * m8xx.c
+ *
+ * CPU specific code
+ *
+ * written or collected and sometimes rewritten by
+ * Magnus Damm <damm@bitsmart.com>
+ *
+ * minor modifications by
+ * Wolfgang Denk <wd@denx.de>
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc8xx.h>
+#include <asm/cache.h>
+
+static char *cpu_warning = "\n " \
+ "*** Warning: CPU Core has Silicon Bugs -- Check the Errata ***";
+
+#if ((defined(CONFIG_MPC860) || defined(CONFIG_MPC855)) && \
+ !defined(CONFIG_MPC862))
+# ifdef CONFIG_MPC855
+# define ID_STR "PC855"
+# else
+# define ID_STR "PC860"
+# endif
+
+static int check_CPU (long clock, uint pvr, uint immr)
+{
+ volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
+ uint k, m;
+ char buf[32];
+ char pre = 'X';
+ char *mid = "xx";
+ char *suf;
+
+ /* the highest 16 bits should be 0x0050 for a 860 */
+
+ if ((pvr >> 16) != 0x0050)
+ return -1;
+
+ k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ m = 0;
+
+ switch (k) {
+ case 0x00020001: pre = 'p'; suf = ""; break;
+ case 0x00030001: suf = ""; break;
+ case 0x00120003: suf = "A"; break;
+ case 0x00130003: suf = "A3"; break;
+
+ case 0x00200004: suf = "B"; break;
+
+ case 0x00300004: suf = "C"; break;
+ case 0x00310004: suf = "C1"; m = 1;
+ break;
+
+ case 0x00200064: mid = "SR"; suf = "B"; break;
+ case 0x00300065: mid = "SR"; suf = "C"; break;
+ case 0x00310065: mid = "SR"; suf = "C1"; m = 1; break;
+ case 0x05010000: suf = "D3"; m = 1; break;
+ case 0x05020000: suf = "D4"; m = 1; break;
+
+ /* this value is not documented anywhere */
+ case 0x40000000: pre = 'P'; suf = "D"; m = 1; break;
+
+ default: suf = NULL; break;
+ }
+
+ if (suf)
+ printf ("%c" ID_STR "%sZPnn%s", pre, mid, suf);
+ else
+ printf ("unknown M" ID_STR " (0x%08x)", k);
+
+ printf (" at %s MHz:", strmhz (buf, clock));
+
+ printf (" %u kB I-Cache", checkicache () >> 10);
+ printf (" %u kB D-Cache", checkdcache () >> 10);
+
+ /* lets check and see if we're running on a 860T (or P?) */
+
+ immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
+ if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
+ printf (" FEC present");
+ }
+
+ if (!m) {
+ puts (cpu_warning);
+ }
+
+ putc ('\n');
+
+ return 0;
+}
+
+#elif defined(CONFIG_MPC862)
+
+static int check_CPU (long clock, uint pvr, uint immr)
+{
+ volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
+ uint k, m;
+ char buf[32];
+ char pre = 'X';
+ char *mid = "xx";
+ char *suf;
+
+ /* the highest 16 bits should be 0x0050 for a 8xx */
+
+ if ((pvr >> 16) != 0x0050)
+ return -1;
+
+ k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ m = 0;
+
+ switch (k) {
+
+ /* this value is not documented anywhere */
+ case 0x06000000: mid = "P"; suf = "0"; break;
+ case 0x06010001: mid = "P"; suf = "A"; m = 1; break;
+ case 0x07000003: mid = "P"; suf = "B"; m = 1; break;
+ default: suf = NULL; break;
+ }
+
+ if (suf)
+ printf ("%cPC862%sZPnn%s", pre, mid, suf);
+ else
+ printf ("unknown MPC862 (0x%08x)", k);
+
+ printf (" at %s MHz:", strmhz (buf, clock));
+
+ printf (" %u kB I-Cache", checkicache () >> 10);
+ printf (" %u kB D-Cache", checkdcache () >> 10);
+
+ /* lets check and see if we're running on a 862T (or P?) */
+
+ immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
+ if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
+ printf (" FEC present");
+ }
+
+ if (!m) {
+ puts (cpu_warning);
+ }
+
+ putc ('\n');
+
+ return 0;
+}
+
+#elif defined(CONFIG_MPC823)
+
+static int check_CPU (long clock, uint pvr, uint immr)
+{
+ volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
+ uint k, m;
+ char buf[32];
+ char *suf;
+
+ /* the highest 16 bits should be 0x0050 for a 8xx */
+
+ if ((pvr >> 16) != 0x0050)
+ return -1;
+
+ k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ m = 0;
+
+ switch (k) {
+ /* MPC823 */
+ case 0x20000000: suf = "0"; break;
+ case 0x20010000: suf = "0.1"; break;
+ case 0x20020000: suf = "Z2/3"; break;
+ case 0x20020001: suf = "Z3"; break;
+ case 0x21000000: suf = "A"; break;
+ case 0x21010000: suf = "B"; m = 1; break;
+ case 0x21010001: suf = "B2"; m = 1; break;
+ /* MPC823E */
+ case 0x24010000: suf = NULL;
+ puts ("PPC823EZTnnB2");
+ m = 1;
+ break;
+ default:
+ suf = NULL;
+ printf ("unknown MPC823 (0x%08x)", k);
+ break;
+ }
+ if (suf)
+ printf ("PPC823ZTnn%s", suf);
+
+ printf (" at %s MHz:", strmhz (buf, clock));
+
+ printf (" %u kB I-Cache", checkicache () >> 10);
+ printf (" %u kB D-Cache", checkdcache () >> 10);
+
+ /* lets check and see if we're running on a 860T (or P?) */
+
+ immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
+ if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
+ puts (" FEC present");
+ }
+
+ if (!m) {
+ puts (cpu_warning);
+ }
+
+ putc ('\n');
+
+ return 0;
+}
+
+#elif defined(CONFIG_MPC850)
+
+static int check_CPU (long clock, uint pvr, uint immr)
+{
+ volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
+ uint k, m;
+ char buf[32];
+
+ /* the highest 16 bits should be 0x0050 for a 8xx */
+
+ if ((pvr >> 16) != 0x0050)
+ return -1;
+
+ k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
+ m = 0;
+
+ switch (k) {
+ case 0x20020001:
+ printf ("XPC850xxZT");
+ break;
+ case 0x21000065:
+ printf ("XPC850xxZTA");
+ break;
+ case 0x21010067:
+ printf ("XPC850xxZTB");
+ m = 1;
+ break;
+ case 0x21020068:
+ printf ("XPC850xxZTC");
+ m = 1;
+ break;
+ default:
+ printf ("unknown MPC850 (0x%08x)", k);
+ }
+ printf (" at %s MHz:", strmhz (buf, clock));
+
+ printf (" %u kB I-Cache", checkicache () >> 10);
+ printf (" %u kB D-Cache", checkdcache () >> 10);
+
+ /* lets check and see if we're running on a 850T (or P?) */
+
+ immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
+ if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
+ printf (" FEC present");
+ }
+
+ if (!m) {
+ puts (cpu_warning);
+ }
+
+ putc ('\n');
+
+ return 0;
+}
+#else
+#error CPU undefined
+#endif
+/* ------------------------------------------------------------------------- */
+
+int checkcpu (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ ulong clock = gd->cpu_clk;
+ uint immr = get_immr (0); /* Return full IMMR contents */
+ uint pvr = get_pvr ();
+
+ puts ("CPU: ");
+
+ /* 850 has PARTNUM 20 */
+ /* 801 has PARTNUM 10 */
+ return check_CPU (clock, pvr, immr);
+}
+
+/* ------------------------------------------------------------------------- */
+/* L1 i-cache */
+/* the standard 860 has 128 sets of 16 bytes in 2 ways (= 4 kB) */
+/* the 860 P (plus) has 256 sets of 16 bytes in 4 ways (= 16 kB) */
+
+int checkicache (void)
+{
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ u32 cacheon = rd_ic_cst () & IDC_ENABLED;
+
+#ifdef CONFIG_IP860
+ u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */
+#else
+ u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */
+#endif
+ u32 m;
+ u32 lines = -1;
+
+ wr_ic_cst (IDC_UNALL);
+ wr_ic_cst (IDC_INVALL);
+ wr_ic_cst (IDC_DISABLE);
+ __asm__ volatile ("isync");
+
+ while (!((m = rd_ic_cst ()) & IDC_CERR2)) {
+ wr_ic_adr (k);
+ wr_ic_cst (IDC_LDLCK);
+ __asm__ volatile ("isync");
+
+ lines++;
+ k += 0x10; /* the number of bytes in a cacheline */
+ }
+
+ wr_ic_cst (IDC_UNALL);
+ wr_ic_cst (IDC_INVALL);
+
+ if (cacheon)
+ wr_ic_cst (IDC_ENABLE);
+ else
+ wr_ic_cst (IDC_DISABLE);
+
+ __asm__ volatile ("isync");
+
+ return lines << 4;
+};
+
+/* ------------------------------------------------------------------------- */
+/* L1 d-cache */
+/* the standard 860 has 128 sets of 16 bytes in 2 ways (= 4 kB) */
+/* the 860 P (plus) has 256 sets of 16 bytes in 2 ways (= 8 kB) */
+/* call with cache disabled */
+
+int checkdcache (void)
+{
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ u32 cacheon = rd_dc_cst () & IDC_ENABLED;
+
+#ifdef CONFIG_IP860
+ u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */
+#else
+ u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */
+#endif
+ u32 m;
+ u32 lines = -1;
+
+ wr_dc_cst (IDC_UNALL);
+ wr_dc_cst (IDC_INVALL);
+ wr_dc_cst (IDC_DISABLE);
+
+ while (!((m = rd_dc_cst ()) & IDC_CERR2)) {
+ wr_dc_adr (k);
+ wr_dc_cst (IDC_LDLCK);
+ lines++;
+ k += 0x10; /* the number of bytes in a cacheline */
+ }
+
+ wr_dc_cst (IDC_UNALL);
+ wr_dc_cst (IDC_INVALL);
+
+ if (cacheon)
+ wr_dc_cst (IDC_ENABLE);
+ else
+ wr_dc_cst (IDC_DISABLE);
+
+ return lines << 4;
+};
+
+/* ------------------------------------------------------------------------- */
+
+void upmconfig (uint upm, uint * table, uint size)
+{
+ uint i;
+ uint addr = 0;
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+ for (i = 0; i < size; i++) {
+ memctl->memc_mdr = table[i]; /* (16-15) */
+ memctl->memc_mcr = addr | upm; /* (16-16) */
+ addr++;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc,
+ char *argv[])
+{
+ ulong msr, addr;
+
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+
+ immap->im_clkrst.car_plprcr |= PLPRCR_CSR; /* Checkstop Reset enable */
+
+ /* Interrupts and MMU off */
+ __asm__ volatile ("mtspr 81, 0");
+ __asm__ volatile ("mfmsr %0":"=r" (msr));
+
+ msr &= ~0x1030;
+ __asm__ volatile ("mtmsr %0"::"r" (msr));
+
+ /*
+ * Trying to execute the next instruction at a non-existing address
+ * should cause a machine check, resulting in reset
+ */
+#ifdef CFG_RESET_ADDRESS
+ addr = CFG_RESET_ADDRESS;
+#else
+ /*
+ * note: when CFG_MONITOR_BASE points to a RAM address, CFG_MONITOR_BASE
+ * - sizeof (ulong) is usually a valid address. Better pick an address
+ * known to be invalid on your system and assign it to CFG_RESET_ADDRESS.
+ * "(ulong)-1" used to be a good choice for many systems...
+ */
+ addr = CFG_MONITOR_BASE - sizeof (ulong);
+#endif
+ ((void (*)(void)) addr) ();
+ return 1;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Get timebase clock frequency (like cpu_clk in Hz)
+ *
+ * See table 15-5 pp. 15-16, and SCCR[RTSEL] pp. 15-27.
+ */
+unsigned long get_tbclk (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile immap_t *immr = (volatile immap_t *) CFG_IMMR;
+ ulong oscclk, factor;
+
+ if (immr->im_clkrst.car_sccr & SCCR_TBS) {
+ return (gd->cpu_clk / 16);
+ }
+
+ factor = (((CFG_PLPRCR) & PLPRCR_MF_MSK) >> PLPRCR_MF_SHIFT) + 1;
+
+ oscclk = gd->cpu_clk / factor;
+
+ if ((immr->im_clkrst.car_sccr & SCCR_RTSEL) == 0 || factor > 2) {
+ return (oscclk / 4);
+ }
+ return (oscclk / 16);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_WATCHDOG)
+void watchdog_reset (void)
+{
+ int re_enable = disable_interrupts ();
+
+ reset_8xx_watchdog ((immap_t *) CFG_IMMR);
+ if (re_enable)
+ enable_interrupts ();
+}
+
+void reset_8xx_watchdog (volatile immap_t * immr)
+{
+# if defined(CONFIG_LWMON)
+ /*
+ * The LWMON board uses a MAX6301 Watchdog
+ * with the trigger pin connected to port PA.7
+ *
+ * (The old board version used a MAX706TESA Watchdog, which
+ * had to be handled exactly the same.)
+ */
+# define WATCHDOG_BIT 0x0100
+ immr->im_ioport.iop_papar &= ~(WATCHDOG_BIT); /* GPIO */
+ immr->im_ioport.iop_padir |= WATCHDOG_BIT; /* Output */
+ immr->im_ioport.iop_paodr &= ~(WATCHDOG_BIT); /* active output */
+
+ immr->im_ioport.iop_padat ^= WATCHDOG_BIT; /* Toggle WDI */
+# else
+ /*
+ * All other boards use the MPC8xx Internal Watchdog
+ */
+ immr->im_siu_conf.sc_swsr = 0x556c; /* write magic1 */
+ immr->im_siu_conf.sc_swsr = 0xaa39; /* write magic2 */
+# endif /* CONFIG_LWMON */
+}
+
+#endif /* CONFIG_WATCHDOG */
+
+/* ------------------------------------------------------------------------- */
diff --git a/cpu/mpc8xx/fec.c b/cpu/mpc8xx/fec.c
new file mode 100644
index 0000000..d43dcaa
--- /dev/null
+++ b/cpu/mpc8xx/fec.c
@@ -0,0 +1,710 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <commproc.h>
+#include <net.h>
+#include <command.h>
+
+#undef ET_DEBUG
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET)
+
+#ifdef CFG_DISCOVER_PHY
+#include <miiphy.h>
+static void mii_discover_phy(void);
+#endif
+
+/* Ethernet Transmit and Receive Buffers */
+#define DBUF_LENGTH 1520
+
+#define TX_BUF_CNT 2
+
+#define TOUT_LOOP 100
+
+#define PKT_MAXBUF_SIZE 1518
+#define PKT_MINBUF_SIZE 64
+#define PKT_MAXBLR_SIZE 1520
+
+
+static char txbuf[DBUF_LENGTH];
+
+static uint rxIdx; /* index of the current RX buffer */
+static uint txIdx; /* index of the current TX buffer */
+
+/*
+ * FEC Ethernet Tx and Rx buffer descriptors allocated at the
+ * immr->udata_bd address on Dual-Port RAM
+ * Provide for Double Buffering
+ */
+
+typedef volatile struct CommonBufferDescriptor {
+ cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
+ cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
+} RTXBD;
+
+static RTXBD *rtx = NULL;
+
+static int fec_send(struct eth_device* dev, volatile void *packet, int length);
+static int fec_recv(struct eth_device* dev);
+static int fec_init(struct eth_device* dev, bd_t * bd);
+static void fec_halt(struct eth_device* dev);
+
+int fec_initialize(bd_t *bis)
+{
+ struct eth_device* dev;
+
+ dev = (struct eth_device*) malloc(sizeof *dev);
+
+ sprintf(dev->name, "FEC ETHERNET");
+ dev->iobase = 0;
+ dev->priv = 0;
+ dev->init = fec_init;
+ dev->halt = fec_halt;
+ dev->send = fec_send;
+ dev->recv = fec_recv;
+
+ eth_register(dev);
+
+ return 1;
+}
+
+static int fec_send(struct eth_device* dev, volatile void *packet, int length)
+{
+ int j, rc;
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+
+ /* section 16.9.23.3
+ * Wait for ready
+ */
+ j = 0;
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+ udelay(1);
+ j++;
+ }
+ if (j>=TOUT_LOOP) {
+ printf("TX not ready\n");
+ }
+
+ rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
+ rtx->txbd[txIdx].cbd_datlen = length;
+ rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
+ __asm__ ("eieio");
+
+ /* Activate transmit Buffer Descriptor polling */
+ fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
+
+ j = 0;
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+#if defined(CONFIG_ICU862)
+ udelay(10);
+#else
+ udelay(1);
+#endif
+ j++;
+ }
+ if (j>=TOUT_LOOP) {
+ printf("TX timeout\n");
+ }
+#ifdef ET_DEBUG
+ printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
+ __FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
+ (rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
+#endif
+ /* return only status bits */;
+ rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
+
+ txIdx = (txIdx + 1) % TX_BUF_CNT;
+
+ return rc;
+}
+
+static int fec_recv(struct eth_device* dev)
+{
+ int length;
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+
+ for (;;) {
+ /* section 16.9.23.2 */
+ if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
+ length = -1;
+ break; /* nothing received - leave for() loop */
+ }
+
+ length = rtx->rxbd[rxIdx].cbd_datlen;
+
+ if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
+#ifdef ET_DEBUG
+ printf("%s[%d] err: %x\n",
+ __FUNCTION__,__LINE__,rtx->rxbd[rxIdx].cbd_sc);
+#endif
+ } else {
+ /* Pass the packet up to the protocol layers. */
+ NetReceive(NetRxPackets[rxIdx], length - 4);
+ }
+
+ /* Give the buffer back to the FEC. */
+ rtx->rxbd[rxIdx].cbd_datlen = 0;
+
+ /* wrap around buffer index when necessary */
+ if ((rxIdx + 1) >= PKTBUFSRX) {
+ rtx->rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
+ rxIdx = 0;
+ } else {
+ rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
+ rxIdx++;
+ }
+
+ __asm__ ("eieio");
+
+ /* Try to fill Buffer Descriptors */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+ }
+
+ return length;
+}
+
+/**************************************************************
+ *
+ * FEC Ethernet Initialization Routine
+ *
+ *************************************************************/
+
+#define FEC_ECNTRL_PINMUX 0x00000004
+#define FEC_ECNTRL_ETHER_EN 0x00000002
+#define FEC_ECNTRL_RESET 0x00000001
+
+#define FEC_RCNTRL_BC_REJ 0x00000010
+#define FEC_RCNTRL_PROM 0x00000008
+#define FEC_RCNTRL_MII_MODE 0x00000004
+#define FEC_RCNTRL_DRT 0x00000002
+#define FEC_RCNTRL_LOOP 0x00000001
+
+#define FEC_TCNTRL_FDEN 0x00000004
+#define FEC_TCNTRL_HBC 0x00000002
+#define FEC_TCNTRL_GTS 0x00000001
+
+#define FEC_RESET_DELAY 50
+
+static int fec_init(struct eth_device* dev, bd_t * bd)
+{
+
+ int i;
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+
+#if defined(CONFIG_FADS) && defined(CONFIG_MPC860T)
+ /* configure FADS for fast (FEC) ethernet, half-duplex */
+ /* The LXT970 needs about 50ms to recover from reset, so
+ * wait for it by discovering the PHY before leaving eth_init().
+ */
+ {
+ volatile uint *bcsr4 = (volatile uint *) BCSR4;
+ *bcsr4 = (*bcsr4 & ~(BCSR4_FETH_EN | BCSR4_FETHCFG1))
+ | (BCSR4_FETHCFG0 | BCSR4_FETHFDE | BCSR4_FETHRST);
+
+ /* reset the LXT970 PHY */
+ *bcsr4 &= ~BCSR4_FETHRST;
+ udelay (10);
+ *bcsr4 |= BCSR4_FETHRST;
+ udelay (10);
+ }
+#endif
+ /* Whack a reset.
+ * A delay is required between a reset of the FEC block and
+ * initialization of other FEC registers because the reset takes
+ * some time to complete. If you don't delay, subsequent writes
+ * to FEC registers might get killed by the reset routine which is
+ * still in progress.
+ */
+ fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
+ for (i = 0;
+ (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+ ++i) {
+ udelay (1);
+ }
+ if (i == FEC_RESET_DELAY) {
+ printf ("FEC_RESET_DELAY timeout\n");
+ return 0;
+ }
+
+ /* We use strictly polling mode only
+ */
+ fecp->fec_imask = 0;
+
+ /* Clear any pending interrupt
+ */
+ fecp->fec_ievent = 0xffc0;
+
+ /* No need to set the IVEC register */
+
+ /* Set station address
+ */
+#define ea eth_get_dev()->enetaddr
+ fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) |
+ (ea[2] << 8) | (ea[3] ) ;
+ fecp->fec_addr_high = (ea[4] << 8) | (ea[5] ) ;
+#undef ea
+
+ /* Clear multicast address hash table
+ */
+ fecp->fec_hash_table_high = 0;
+ fecp->fec_hash_table_low = 0;
+
+ /* Set maximum receive buffer size.
+ */
+ fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
+
+ /* Set maximum frame length
+ */
+ fecp->fec_r_hash = PKT_MAXBUF_SIZE;
+
+ /*
+ * Setup Buffers and Buffer Desriptors
+ */
+ rxIdx = 0;
+ txIdx = 0;
+
+ if (!rtx) {
+#ifdef CFG_ALLOC_DPRAM
+ rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + dpram_alloc_align(sizeof(RTXBD),8));
+#else
+ rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_FEC_BASE);
+#endif
+ }
+ /*
+ * Setup Receiver Buffer Descriptors (13.14.24.18)
+ * Settings:
+ * Empty, Wrap
+ */
+ for (i = 0; i < PKTBUFSRX; i++) {
+ rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+ rtx->rxbd[i].cbd_datlen = 0; /* Reset */
+ rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
+ }
+ rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
+
+ /*
+ * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
+ * Settings:
+ * Last, Tx CRC
+ */
+ for (i = 0; i < TX_BUF_CNT; i++) {
+ rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
+ rtx->txbd[i].cbd_datlen = 0; /* Reset */
+ rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
+ }
+ rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
+
+ /* Set receive and transmit descriptor base
+ */
+ fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
+ fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
+
+ /* Enable MII mode
+ */
+#if 0 /* Full duplex mode */
+ fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;
+ fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;
+#else /* Half duplex mode */
+ fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
+ fecp->fec_x_cntrl = 0;
+#endif
+
+ /* Enable big endian and don't care about SDMA FC.
+ */
+ fecp->fec_fun_code = 0x78000000;
+
+ /* Set MII speed to 2.5 MHz or slightly below.
+ * According to the MPC860T (Rev. D) Fast ethernet controller user
+ * manual (6.2.14),
+ * the MII management interface clock must be less than or equal
+ * to 2.5 MHz.
+ * This MDC frequency is equal to system clock / (2 * MII_SPEED).
+ * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
+ */
+ fecp->fec_mii_speed = ((bd->bi_busfreq + 4999999) / 5000000) << 1;
+
+#if !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
+ /* Configure all of port D for MII.
+ */
+ immr->im_ioport.iop_pdpar = 0x1fff;
+
+ /* Bits moved from Rev. D onward */
+ if ((get_immr (0) & 0xffff) < 0x0501) {
+ immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
+ } else {
+ immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
+ }
+#else
+ /* Configure port A for MII.
+ */
+
+#if defined(CONFIG_ICU862) && defined(CFG_DISCOVER_PHY)
+
+ /* On the ICU862 board the MII-MDC pin is routed to PD8 pin
+ * of CPU, so for this board we need to configure Utopia and
+ * enable PD8 to MII-MDC function */
+ immr->im_ioport.iop_pdpar |= 0x4080;
+#endif
+
+ /* Has Utopia been configured? */
+ if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
+ /*
+ * YES - Use MUXED mode for UTOPIA bus.
+ * This frees Port A for use by MII (see 862UM table 41-6).
+ */
+ immr->im_ioport.utmode &= ~0x80;
+ } else {
+ /*
+ * NO - set SPLIT mode for UTOPIA bus.
+ *
+ * This doesn't really effect UTOPIA (which isn't
+ * enabled anyway) but just tells the 862
+ * to use port A for MII (see 862UM table 41-6).
+ */
+ immr->im_ioport.utmode |= 0x80;
+ }
+#endif /* !defined(CONFIG_ICU862) */
+
+ rxIdx = 0;
+ txIdx = 0;
+
+ /* Now enable the transmit and receive processing
+ */
+ fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+
+#ifdef CFG_DISCOVER_PHY
+ /* wait for the PHY to wake up after reset
+ */
+ mii_discover_phy();
+#endif
+
+ /* And last, try to fill Rx Buffer Descriptors */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+
+ return 1;
+}
+
+
+
+static void fec_halt(struct eth_device* dev)
+{
+#if 0
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+#endif
+}
+
+#if 0
+void restart(void)
+{
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+}
+#endif
+
+#if defined(CFG_DISCOVER_PHY) || (CONFIG_COMMANDS & CFG_CMD_MII)
+
+static int phyaddr = -1; /* didn't find a PHY yet */
+static uint phytype;
+
+/* Make MII read/write commands for the FEC.
+*/
+
+#define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
+ (REG & 0x1f) << 18))
+
+#define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
+ (REG & 0x1f) << 18) | \
+ (VAL & 0xffff))
+
+/* Interrupt events/masks.
+*/
+#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
+#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
+#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
+#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
+#define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
+#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
+#define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
+#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
+#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
+#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
+
+/* PHY identification
+ */
+#define PHY_ID_LXT970 0x78100000 /* LXT970 */
+#define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */
+#define PHY_ID_82555 0x02a80150 /* Intel 82555 */
+#define PHY_ID_QS6612 0x01814400 /* QS6612 */
+#define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */
+#define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */
+#define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */
+
+
+/* send command to phy using mii, wait for result */
+static uint
+mii_send(uint mii_cmd)
+{
+ uint mii_reply;
+ volatile fec_t *ep;
+
+ ep = &(((immap_t *)CFG_IMMR)->im_cpm.cp_fec);
+
+ ep->fec_mii_data = mii_cmd; /* command to phy */
+
+ /* wait for mii complete */
+ while (!(ep->fec_ievent & FEC_ENET_MII))
+ ; /* spin until done */
+ mii_reply = ep->fec_mii_data; /* result from phy */
+ ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
+#if 0
+ printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
+ __FILE__,__LINE__,__FUNCTION__,mii_cmd,mii_reply);
+#endif
+ return (mii_reply & 0xffff); /* data read from phy */
+}
+#endif /* CFG_DISCOVER_PHY || (CONFIG_COMMANDS & CFG_CMD_MII) */
+
+#if defined(CFG_DISCOVER_PHY)
+static void
+mii_discover_phy(void)
+{
+#define MAX_PHY_PASSES 11
+ uint phyno;
+ int pass;
+
+ phyaddr = -1; /* didn't find a PHY yet */
+ for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
+ if (pass > 1) {
+ /* PHY may need more time to recover from reset.
+ * The LXT970 needs 50ms typical, no maximum is
+ * specified, so wait 10ms before try again.
+ * With 11 passes this gives it 100ms to wake up.
+ */
+ udelay(10000); /* wait 10ms */
+ }
+ for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
+ phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR1));
+#ifdef ET_DEBUG
+ printf("PHY type 0x%x pass %d type ", phytype, pass);
+#endif
+ if (phytype != 0xffff) {
+ phyaddr = phyno;
+ phytype <<= 16;
+ phytype |= mii_send(mk_mii_read(phyno,
+ PHY_PHYIDR2));
+
+#ifdef ET_DEBUG
+ printf("PHY @ 0x%x pass %d type ",phyno,pass);
+ switch (phytype & 0xfffffff0) {
+ case PHY_ID_LXT970:
+ printf("LXT970\n");
+ break;
+ case PHY_ID_LXT971:
+ printf("LXT971\n");
+ break;
+ case PHY_ID_82555:
+ printf("82555\n");
+ break;
+ case PHY_ID_QS6612:
+ printf("QS6612\n");
+ break;
+ case PHY_ID_AMD79C784:
+ printf("AMD79C784\n");
+ break;
+ case PHY_ID_LSI80225B:
+ printf("LSI L80225/B\n");
+ break;
+ default:
+ printf("0x%08x\n", phytype);
+ break;
+ }
+#endif
+ }
+ }
+ }
+ if (phyaddr < 0) {
+ printf("No PHY device found.\n");
+ }
+}
+#endif /* CFG_DISCOVER_PHY */
+
+#if (CONFIG_COMMANDS & CFG_CMD_MII) && !defined(CONFIG_BITBANGMII)
+
+static int mii_init_done = 0;
+
+/****************************************************************************
+ * mii_init -- Initialize the MII for MII command without ethernet
+ * This function is a subset of eth_init
+ ****************************************************************************
+ */
+void mii_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ bd_t *bd = gd->bd;
+
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+ int i;
+
+ if (mii_init_done != 0) {
+ return;
+ }
+
+ /* Whack a reset.
+ * A delay is required between a reset of the FEC block and
+ * initialization of other FEC registers because the reset takes
+ * some time to complete. If you don't delay, subsequent writes
+ * to FEC registers might get killed by the reset routine which is
+ * still in progress.
+ */
+
+ fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
+ for (i = 0;
+ (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
+ ++i) {
+ udelay (1);
+ }
+ if (i == FEC_RESET_DELAY) {
+ printf ("FEC_RESET_DELAY timeout\n");
+ return;
+ }
+
+ /* We use strictly polling mode only
+ */
+ fecp->fec_imask = 0;
+
+ /* Clear any pending interrupt
+ */
+ fecp->fec_ievent = 0xffc0;
+
+ /* Set MII speed to 2.5 MHz or slightly below.
+ * According to the MPC860T (Rev. D) Fast ethernet controller user
+ * manual (6.2.14),
+ * the MII management interface clock must be less than or equal
+ * to 2.5 MHz.
+ * This MDC frequency is equal to system clock / (2 * MII_SPEED).
+ * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
+ */
+ fecp->fec_mii_speed = ((bd->bi_busfreq + 4999999) / 5000000) << 1;
+
+#if !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
+ /* Configure all of port D for MII.
+ */
+ immr->im_ioport.iop_pdpar = 0x1fff;
+
+ /* Bits moved from Rev. D onward */
+ if ((get_immr (0) & 0xffff) < 0x0501) {
+ immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
+ } else {
+ immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
+ }
+#else
+ /* Configure port A for MII.
+ */
+
+#if defined(CONFIG_ICU862)
+
+ /* On the ICU862 board the MII-MDC pin is routed to PD8 pin
+ * of CPU, so for this board we need to configure Utopia and
+ * enable PD8 to MII-MDC function */
+ immr->im_ioport.iop_pdpar |= 0x4080;
+#endif
+
+ /* Has Utopia been configured? */
+ if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
+ /*
+ * YES - Use MUXED mode for UTOPIA bus.
+ * This frees Port A for use by MII (see 862UM table 41-6).
+ */
+ immr->im_ioport.utmode &= ~0x80;
+ } else {
+ /*
+ * NO - set SPLIT mode for UTOPIA bus.
+ *
+ * This doesn't really effect UTOPIA (which isn't
+ * enabled anyway) but just tells the 862
+ * to use port A for MII (see 862UM table 41-6).
+ */
+ immr->im_ioport.utmode |= 0x80;
+ }
+#endif /* !defined(CONFIG_ICU862) */
+ /* Now enable the transmit and receive processing
+ */
+ fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+
+ mii_init_done = 1;
+}
+/*****************************************************************************
+ * Read and write a MII PHY register, routines used by MII Utilities
+ *
+ * FIXME: These routines are expected to return 0 on success, but mii_send
+ * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
+ * no PHY connected...
+ * For now always return 0.
+ * FIXME: These routines only work after calling eth_init() at least once!
+ * Otherwise they hang in mii_send() !!! Sorry!
+ *****************************************************************************/
+
+int miiphy_read(unsigned char addr, unsigned char reg, unsigned short *value)
+{
+ short rdreg; /* register working value */
+
+#ifdef MII_DEBUG
+ printf ("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
+#endif
+ rdreg = mii_send(mk_mii_read(addr, reg));
+
+ *value = rdreg;
+
+#ifdef MII_DEBUG
+ printf ("0x%04x\n", *value);
+#endif
+
+ return 0;
+}
+
+int miiphy_write(unsigned char addr, unsigned char reg, unsigned short value)
+{
+ short rdreg; /* register working value */
+
+#ifdef MII_DEBUG
+ printf ("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
+#endif
+
+ rdreg = mii_send(mk_mii_write(addr, reg, value));
+
+#ifdef MII_DEBUG
+ printf ("0x%04x\n", value);
+#endif
+
+ return 0;
+}
+#endif /* (CONFIG_COMMANDS & CFG_CMD_MII) && !defined(CONFIG_BITBANGMII)*/
+
+#endif /* CFG_CMD_NET, FEC_ENET */
diff --git a/cpu/mpc8xx/spi.c b/cpu/mpc8xx/spi.c
new file mode 100644
index 0000000..f04d88e
--- /dev/null
+++ b/cpu/mpc8xx/spi.c
@@ -0,0 +1,571 @@
+/*
+ * Copyright (c) 2001 Navin Boppuri / Prashant Patel
+ * <nboppuri@trinetcommunication.com>,
+ * <pmpatel@trinetcommunication.com>
+ * Copyright (c) 2001 Gerd Mennchen <Gerd.Mennchen@icn.siemens.de>
+ * Copyright (c) 2001 Wolfgang Denk, DENX Software Engineering, <wd@denx.de>.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * MPC8xx CPM SPI interface.
+ *
+ * Parts of this code are probably not portable and/or specific to
+ * the board which I used for the tests. Please send fixes/complaints
+ * to wd@denx.de
+ *
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+#include <commproc.h>
+#include <linux/ctype.h>
+#include <malloc.h>
+#include <post.h>
+#include <net.h>
+
+#if (defined(CONFIG_SPI)) || (CONFIG_POST & CFG_POST_SPI)
+
+/* Warning:
+ * You cannot enable DEBUG for early system initalization, i. e. when
+ * this driver is used to read environment parameters like "baudrate"
+ * from EEPROM which are used to initialize the serial port which is
+ * needed to print the debug messages...
+ */
+#undef DEBUG
+
+#define SPI_EEPROM_WREN 0x06
+#define SPI_EEPROM_RDSR 0x05
+#define SPI_EEPROM_READ 0x03
+#define SPI_EEPROM_WRITE 0x02
+
+/* ---------------------------------------------------------------
+ * Offset for initial SPI buffers in DPRAM:
+ * We need a 520 byte scratch DPRAM area to use at an early stage.
+ * It is used between the two initialization calls (spi_init_f()
+ * and spi_init_r()).
+ * The value 0xb00 makes it far enough from the start of the data
+ * area (as well as from the stack pointer).
+ * --------------------------------------------------------------- */
+#ifndef CFG_SPI_INIT_OFFSET
+#define CFG_SPI_INIT_OFFSET 0xB00
+#endif
+
+#ifdef DEBUG
+
+#define DPRINT(a) printf a;
+/* -----------------------------------------------
+ * Helper functions to peek into tx and rx buffers
+ * ----------------------------------------------- */
+static const char * const hex_digit = "0123456789ABCDEF";
+
+static char quickhex (int i)
+{
+ return hex_digit[i];
+}
+
+static void memdump (void *pv, int num)
+{
+ int i;
+ unsigned char *pc = (unsigned char *) pv;
+
+ for (i = 0; i < num; i++)
+ printf ("%c%c ", quickhex (pc[i] >> 4), quickhex (pc[i] & 0x0f));
+ printf ("\t");
+ for (i = 0; i < num; i++)
+ printf ("%c", isprint (pc[i]) ? pc[i] : '.');
+ printf ("\n");
+}
+#else /* !DEBUG */
+
+#define DPRINT(a)
+
+#endif /* DEBUG */
+
+/* -------------------
+ * Function prototypes
+ * ------------------- */
+void spi_init (void);
+
+ssize_t spi_read (uchar *, int, uchar *, int);
+ssize_t spi_write (uchar *, int, uchar *, int);
+ssize_t spi_xfer (size_t);
+
+/* -------------------
+ * Variables
+ * ------------------- */
+
+#define MAX_BUFFER 0x104
+
+/* ----------------------------------------------------------------------
+ * Initially we place the RX and TX buffers at a fixed location in DPRAM!
+ * ---------------------------------------------------------------------- */
+static uchar *rxbuf =
+ (uchar *)&((cpm8xx_t *)&((immap_t *)CFG_IMMR)->im_cpm)->cp_dpmem
+ [CFG_SPI_INIT_OFFSET];
+static uchar *txbuf =
+ (uchar *)&((cpm8xx_t *)&((immap_t *)CFG_IMMR)->im_cpm)->cp_dpmem
+ [CFG_SPI_INIT_OFFSET+MAX_BUFFER];
+
+/* **************************************************************************
+ *
+ * Function: spi_init_f
+ *
+ * Description: Init SPI-Controller (ROM part)
+ *
+ * return: ---
+ *
+ * *********************************************************************** */
+void spi_init_f (void)
+{
+ unsigned int dpaddr;
+
+ volatile spi_t *spi;
+ volatile immap_t *immr;
+ volatile cpic8xx_t *cpi;
+ volatile cpm8xx_t *cp;
+ volatile iop8xx_t *iop;
+ volatile cbd_t *tbdf, *rbdf;
+
+ immr = (immap_t *) CFG_IMMR;
+ cpi = (cpic8xx_t *)&immr->im_cpic;
+ iop = (iop8xx_t *) &immr->im_ioport;
+ cp = (cpm8xx_t *) &immr->im_cpm;
+
+#ifdef CFG_SPI_UCODE_PATCH
+ spi = (spi_t *)&cp->cp_dpmem[spi->spi_rpbase];
+#else
+ spi = (spi_t *)&cp->cp_dparam[PROFF_SPI];
+ /* Disable relocation */
+ spi->spi_rpbase = 0;
+#endif
+
+/* 1 */
+ /* ------------------------------------------------
+ * Initialize Port B SPI pins -> page 34-8 MPC860UM
+ * (we are only in Master Mode !)
+ * ------------------------------------------------ */
+
+ /* --------------------------------------------
+ * GPIO or per. Function
+ * PBPAR[28] = 1 [0x00000008] -> PERI: (SPIMISO)
+ * PBPAR[29] = 1 [0x00000004] -> PERI: (SPIMOSI)
+ * PBPAR[30] = 1 [0x00000002] -> PERI: (SPICLK)
+ * PBPAR[31] = 0 [0x00000001] -> GPIO: (CS for PCUE/CCM-EEPROM)
+ * -------------------------------------------- */
+ cp->cp_pbpar |= 0x0000000E; /* set bits */
+ cp->cp_pbpar &= ~0x00000001; /* reset bit */
+
+ /* ----------------------------------------------
+ * In/Out or per. Function 0/1
+ * PBDIR[28] = 1 [0x00000008] -> PERI1: SPIMISO
+ * PBDIR[29] = 1 [0x00000004] -> PERI1: SPIMOSI
+ * PBDIR[30] = 1 [0x00000002] -> PERI1: SPICLK
+ * PBDIR[31] = 1 [0x00000001] -> GPIO OUT: CS for PCUE/CCM-EEPROM
+ * ---------------------------------------------- */
+ cp->cp_pbdir |= 0x0000000F;
+
+ /* ----------------------------------------------
+ * open drain or active output
+ * PBODR[28] = 1 [0x00000008] -> open drain: SPIMISO
+ * PBODR[29] = 0 [0x00000004] -> active output SPIMOSI
+ * PBODR[30] = 0 [0x00000002] -> active output: SPICLK
+ * PBODR[31] = 0 [0x00000001] -> active output: GPIO OUT: CS for PCUE/CCM
+ * ---------------------------------------------- */
+
+ cp->cp_pbodr |= 0x00000008;
+ cp->cp_pbodr &= ~0x00000007;
+
+ /* Initialize the parameter ram.
+ * We need to make sure many things are initialized to zero
+ */
+ spi->spi_rstate = 0;
+ spi->spi_rdp = 0;
+ spi->spi_rbptr = 0;
+ spi->spi_rbc = 0;
+ spi->spi_rxtmp = 0;
+ spi->spi_tstate = 0;
+ spi->spi_tdp = 0;
+ spi->spi_tbptr = 0;
+ spi->spi_tbc = 0;
+ spi->spi_txtmp = 0;
+
+ /* Allocate space for one transmit and one receive buffer
+ * descriptor in the DP ram
+ */
+#ifdef CFG_ALLOC_DPRAM
+ dpaddr = dpram_alloc_align (sizeof(cbd_t)*2, 8);
+#else
+ dpaddr = CPM_SPI_BASE;
+#endif
+
+/* 3 */
+ /* Set up the SPI parameters in the parameter ram */
+ spi->spi_rbase = dpaddr;
+ spi->spi_tbase = dpaddr + sizeof (cbd_t);
+
+ /***********IMPORTANT******************/
+
+ /*
+ * Setting transmit and receive buffer descriptor pointers
+ * initially to rbase and tbase. Only the microcode patches
+ * documentation talks about initializing this pointer. This
+ * is missing from the sample I2C driver. If you dont
+ * initialize these pointers, the kernel hangs.
+ */
+ spi->spi_rbptr = spi->spi_rbase;
+ spi->spi_tbptr = spi->spi_tbase;
+
+/* 4 */
+#ifdef CFG_SPI_UCODE_PATCH
+ /*
+ * Initialize required parameters if using microcode patch.
+ */
+ spi->spi_rstate = 0;
+ spi->spi_tstate = 0;
+#else
+ /* Init SPI Tx + Rx Parameters */
+ while (cp->cp_cpcr & CPM_CR_FLG)
+ ;
+ cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SPI, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+ while (cp->cp_cpcr & CPM_CR_FLG)
+ ;
+#endif /* CFG_SPI_UCODE_PATCH */
+
+/* 5 */
+ /* Set SDMA configuration register */
+ immr->im_siu_conf.sc_sdcr = 0x0001;
+
+/* 6 */
+ /* Set to big endian. */
+ spi->spi_tfcr = SMC_EB;
+ spi->spi_rfcr = SMC_EB;
+
+/* 7 */
+ /* Set maximum receive size. */
+ spi->spi_mrblr = MAX_BUFFER;
+
+/* 8 + 9 */
+ /* tx and rx buffer descriptors */
+ tbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_tbase];
+ rbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_rbase];
+
+ tbdf->cbd_sc &= ~BD_SC_READY;
+ rbdf->cbd_sc &= ~BD_SC_EMPTY;
+
+ /* Set the bd's rx and tx buffer address pointers */
+ rbdf->cbd_bufaddr = (ulong) rxbuf;
+ tbdf->cbd_bufaddr = (ulong) txbuf;
+
+/* 10 + 11 */
+ cp->cp_spim = 0; /* Mask all SPI events */
+ cp->cp_spie = SPI_EMASK; /* Clear all SPI events */
+
+ return;
+}
+
+/* **************************************************************************
+ *
+ * Function: spi_init_r
+ *
+ * Description: Init SPI-Controller (RAM part) -
+ * The malloc engine is ready and we can move our buffers to
+ * normal RAM
+ *
+ * return: ---
+ *
+ * *********************************************************************** */
+void spi_init_r (void)
+{
+ volatile cpm8xx_t *cp;
+ volatile spi_t *spi;
+ volatile immap_t *immr;
+ volatile cbd_t *tbdf, *rbdf;
+
+ immr = (immap_t *) CFG_IMMR;
+ cp = (cpm8xx_t *) &immr->im_cpm;
+
+#ifdef CFG_SPI_UCODE_PATCH
+ spi = (spi_t *)&cp->cp_dpmem[spi->spi_rpbase];
+#else
+ spi = (spi_t *)&cp->cp_dparam[PROFF_SPI];
+ /* Disable relocation */
+ spi->spi_rpbase = 0;
+#endif
+
+ /* tx and rx buffer descriptors */
+ tbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_tbase];
+ rbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_rbase];
+
+ /* Allocate memory for RX and TX buffers */
+ rxbuf = (uchar *) malloc (MAX_BUFFER);
+ txbuf = (uchar *) malloc (MAX_BUFFER);
+
+ rbdf->cbd_bufaddr = (ulong) rxbuf;
+ tbdf->cbd_bufaddr = (ulong) txbuf;
+
+ return;
+}
+
+/****************************************************************************
+ * Function: spi_write
+ **************************************************************************** */
+ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len)
+{
+ int i;
+
+ memset(rxbuf, 0, MAX_BUFFER);
+ memset(txbuf, 0, MAX_BUFFER);
+ *txbuf = SPI_EEPROM_WREN; /* write enable */
+ spi_xfer(1);
+ memcpy(txbuf, addr, alen);
+ *txbuf = SPI_EEPROM_WRITE; /* WRITE memory array */
+ memcpy(alen + txbuf, buffer, len);
+ spi_xfer(alen + len);
+ /* ignore received data */
+ for (i = 0; i < 1000; i++) {
+ *txbuf = SPI_EEPROM_RDSR; /* read status */
+ txbuf[1] = 0;
+ spi_xfer(2);
+ if (!(rxbuf[1] & 1)) {
+ break;
+ }
+ udelay(1000);
+ }
+ if (i >= 1000) {
+ printf ("*** spi_write: Time out while writing!\n");
+ }
+
+ return len;
+}
+
+/****************************************************************************
+ * Function: spi_read
+ **************************************************************************** */
+ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len)
+{
+ memset(rxbuf, 0, MAX_BUFFER);
+ memset(txbuf, 0, MAX_BUFFER);
+ memcpy(txbuf, addr, alen);
+ *txbuf = SPI_EEPROM_READ; /* READ memory array */
+
+ /*
+ * There is a bug in 860T (?) that cuts the last byte of input
+ * if we're reading into DPRAM. The solution we choose here is
+ * to always read len+1 bytes (we have one extra byte at the
+ * end of the buffer).
+ */
+ spi_xfer(alen + len + 1);
+ memcpy(buffer, alen + rxbuf, len);
+
+ return len;
+}
+
+/****************************************************************************
+ * Function: spi_xfer
+ **************************************************************************** */
+ssize_t spi_xfer (size_t count)
+{
+ volatile immap_t *immr;
+ volatile cpm8xx_t *cp;
+ volatile spi_t *spi;
+ cbd_t *tbdf, *rbdf;
+ ushort loop;
+ int tm;
+
+ DPRINT (("*** spi_xfer entered ***\n"));
+
+ immr = (immap_t *) CFG_IMMR;
+ cp = (cpm8xx_t *) &immr->im_cpm;
+
+#ifdef CFG_SPI_UCODE_PATCH
+ spi = (spi_t *)&cp->cp_dpmem[spi->spi_rpbase];
+#else
+ spi = (spi_t *)&cp->cp_dparam[PROFF_SPI];
+ /* Disable relocation */
+ spi->spi_rpbase = 0;
+#endif
+
+ tbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_tbase];
+ rbdf = (cbd_t *) & cp->cp_dpmem[spi->spi_rbase];
+
+ /* Set CS for device */
+ cp->cp_pbdat &= ~0x0001;
+
+ /* Setting tx bd status and data length */
+ tbdf->cbd_sc = BD_SC_READY | BD_SC_LAST | BD_SC_WRAP;
+ tbdf->cbd_datlen = count;
+
+ DPRINT (("*** spi_xfer: Bytes to be xferred: %d ***\n",
+ tbdf->cbd_datlen));
+
+ /* Setting rx bd status and data length */
+ rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
+ rbdf->cbd_datlen = 0; /* rx length has no significance */
+
+ loop = cp->cp_spmode & SPMODE_LOOP;
+ cp->cp_spmode = /*SPMODE_DIV16 |*/ /* BRG/16 mode not used here */
+ loop |
+ SPMODE_REV |
+ SPMODE_MSTR |
+ SPMODE_EN |
+ SPMODE_LEN(8) | /* 8 Bits per char */
+ SPMODE_PM(0x8) ; /* medium speed */
+ cp->cp_spim = 0; /* Mask all SPI events */
+ cp->cp_spie = SPI_EMASK; /* Clear all SPI events */
+
+ /* start spi transfer */
+ DPRINT (("*** spi_xfer: Performing transfer ...\n"));
+ cp->cp_spcom |= SPI_STR; /* Start transmit */
+
+ /* --------------------------------
+ * Wait for SPI transmit to get out
+ * or time out (1 second = 1000 ms)
+ * -------------------------------- */
+ for (tm=0; tm<1000; ++tm) {
+ if (cp->cp_spie & SPI_TXB) { /* Tx Buffer Empty */
+ DPRINT (("*** spi_xfer: Tx buffer empty\n"));
+ break;
+ }
+ if ((tbdf->cbd_sc & BD_SC_READY) == 0) {
+ DPRINT (("*** spi_xfer: Tx BD done\n"));
+ break;
+ }
+ udelay (1000);
+ }
+ if (tm >= 1000) {
+ printf ("*** spi_xfer: Time out while xferring to/from SPI!\n");
+ }
+ DPRINT (("*** spi_xfer: ... transfer ended\n"));
+
+#ifdef DEBUG
+ printf ("\nspi_xfer: txbuf after xfer\n");
+ memdump ((void *) txbuf, 16); /* dump of txbuf before transmit */
+ printf ("spi_xfer: rxbuf after xfer\n");
+ memdump ((void *) rxbuf, 16); /* dump of rxbuf after transmit */
+ printf ("\n");
+#endif
+
+ /* Clear CS for device */
+ cp->cp_pbdat |= 0x0001;
+
+ return count;
+}
+#endif /* CONFIG_SPI || (CONFIG_POST & CFG_POST_SPI) */
+
+/*
+ * SPI test
+ *
+ * The Serial Peripheral Interface (SPI) is tested in the local loopback mode.
+ * The interface is configured accordingly and several packets
+ * are transfered. The configurable test parameters are:
+ * TEST_MIN_LENGTH - minimum size of packet to transfer
+ * TEST_MAX_LENGTH - maximum size of packet to transfer
+ * TEST_NUM - number of tests
+ */
+
+#if CONFIG_POST & CFG_POST_SPI
+
+#define TEST_MIN_LENGTH 1
+#define TEST_MAX_LENGTH MAX_BUFFER
+#define TEST_NUM 1
+
+static void packet_fill (char * packet, int length)
+{
+ char c = (char) length;
+ int i;
+
+ for (i = 0; i < length; i++)
+ {
+ packet[i] = c++;
+ }
+}
+
+static int packet_check (char * packet, int length)
+{
+ char c = (char) length;
+ int i;
+
+ for (i = 0; i < length; i++)
+ {
+ if (packet[i] != c++) return -1;
+ }
+
+ return 0;
+}
+
+int spi_post_test (int flags)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ int res = -1;
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ volatile cpm8xx_t *cp = (cpm8xx_t *) &immr->im_cpm;
+ int i;
+ int l;
+
+ spi_init_f();
+ spi_init_r();
+
+ cp->cp_spmode |= SPMODE_LOOP;
+
+ for (i = 0; i < TEST_NUM; i++)
+ {
+ for (l = TEST_MIN_LENGTH; l <= TEST_MAX_LENGTH; l += 8)
+ {
+ packet_fill(txbuf, l);
+
+ spi_xfer(l);
+
+ if (packet_check(rxbuf, l) < 0)
+ {
+ goto Done;
+ }
+ }
+ }
+
+ res = 0;
+
+ Done:
+
+ cp->cp_spmode &= ~SPMODE_LOOP;
+
+ /*
+ * SCC2 Ethernet parameter RAM space overlaps
+ * the SPI parameter RAM space. So we need to restore
+ * the SCC2 configuration if it is used by UART or Ethernet.
+ */
+
+#if defined(CONFIG_8xx_CONS_SCC2)
+ serial_init();
+#endif
+
+#if defined(SCC_ENET) && (SCC_ENET == 1)
+ eth_init(gd->bd);
+#endif
+
+ if (res != 0)
+ {
+ post_log("SPI test failed\n");
+ }
+
+ return res;
+}
+#endif /* CONFIG_POST & CFG_POST_SPI */
diff --git a/cpu/ppc4xx/405gp_enet.c b/cpu/ppc4xx/405gp_enet.c
new file mode 100644
index 0000000..49e9e42
--- /dev/null
+++ b/cpu/ppc4xx/405gp_enet.c
@@ -0,0 +1,867 @@
+/*-----------------------------------------------------------------------------+
+ *
+ * This source code has been made available to you by IBM on an AS-IS
+ * basis. Anyone receiving this source is licensed under IBM
+ * copyrights to use it in any way he or she deems fit, including
+ * copying it, modifying it, compiling it, and redistributing it either
+ * with or without modifications. No license under IBM patents or
+ * patent applications is to be implied by the copyright license.
+ *
+ * Any user of this software should understand that IBM cannot provide
+ * technical support for this software and will not be responsible for
+ * any consequences resulting from the use of this software.
+ *
+ * Any person who transfers this source code or any derivative work
+ * must include the IBM copyright notice, this paragraph, and the
+ * preceding two paragraphs in the transferred software.
+ *
+ * COPYRIGHT I B M CORPORATION 1995
+ * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+ *-----------------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------+
+ *
+ * File Name: enetemac.c
+ *
+ * Function: Device driver for the ethernet EMAC3 macro on the 405GP.
+ *
+ * Author: Mark Wisner
+ *
+ * Change Activity-
+ *
+ * Date Description of Change BY
+ * --------- --------------------- ---
+ * 05-May-99 Created MKW
+ * 27-Jun-99 Clean up JWB
+ * 16-Jul-99 Added MAL error recovery and better IP packet handling MKW
+ * 29-Jul-99 Added Full duplex support MKW
+ * 06-Aug-99 Changed names for Mal CR reg MKW
+ * 23-Aug-99 Turned off SYE when running at 10Mbs MKW
+ * 24-Aug-99 Marked descriptor empty after call_xlc MKW
+ * 07-Sep-99 Set MAL RX buffer size reg to ENET_MAX_MTU_ALIGNED / 16 MCG
+ * to avoid chaining maximum sized packets. Push starting
+ * RX descriptor address up to the next cache line boundary.
+ * 16-Jan-00 Added support for booting with IP of 0x0 MKW
+ * 15-Mar-00 Updated enetInit() to enable broadcast addresses in the
+ * EMAC_RXM register. JWB
+ * 12-Mar-01 anne-sophie.harnois@nextream.fr
+ * - Variables are compatible with those already defined in
+ * include/net.h
+ * - Receive buffer descriptor ring is used to send buffers
+ * to the user
+ * - Info print about send/received/handled packet number if
+ * INFO_405_ENET is set
+ * 17-Apr-01 stefan.roese@esd-electronics.com
+ * - MAL reset in "eth_halt" included
+ * - Enet speed and duplex output now in one line
+ * 08-May-01 stefan.roese@esd-electronics.com
+ * - MAL error handling added (eth_init called again)
+ * 13-Nov-01 stefan.roese@esd-electronics.com
+ * - Set IST bit in EMAC_M1 reg upon 100MBit or full duplex
+ * 04-Jan-02 stefan.roese@esd-electronics.com
+ * - Wait for PHY auto negotiation to complete added
+ * 06-Feb-02 stefan.roese@esd-electronics.com
+ * - Bug fixed in waiting for auto negotiation to complete
+ * 26-Feb-02 stefan.roese@esd-electronics.com
+ * - rx and tx buffer descriptors now allocated (no fixed address
+ * used anymore)
+ * 17-Jun-02 stefan.roese@esd-electronics.com
+ * - MAL error debug printf 'M' removed (rx de interrupt may
+ * occur upon many incoming packets with only 4 rx buffers).
+ *-----------------------------------------------------------------------------*/
+
+#include <common.h>
+#include <asm/processor.h>
+#include <ppc4xx.h>
+#include <commproc.h>
+#include <405gp_enet.h>
+#include <405_mal.h>
+#include <miiphy.h>
+#include <net.h>
+#include <malloc.h>
+#include "vecnum.h"
+
+#if defined(CONFIG_405GP) || defined(CONFIG_440)
+
+#define EMAC_RESET_TIMEOUT 1000 /* 1000 ms reset timeout */
+#define PHY_AUTONEGOTIATE_TIMEOUT 2000 /* 2000 ms autonegotiate timeout */
+
+#define NUM_TX_BUFF 1
+/* AS.HARNOIS
+ * Use PKTBUFSRX (include/net.h) instead of setting NUM_RX_BUFF again
+ * These both variables are used to define the same thing!
+ * #define NUM_RX_BUFF 4
+ */
+#define NUM_RX_BUFF PKTBUFSRX
+
+/* Ethernet Transmit and Receive Buffers */
+/* AS.HARNOIS
+ * In the same way ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
+ * PKTSIZE and PKTSIZE_ALIGN (include/net.h)
+ */
+#define ENET_MAX_MTU PKTSIZE
+#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN
+
+static char *txbuf_ptr;
+
+/* define the number of channels implemented */
+#define EMAC_RXCHL 1
+#define EMAC_TXCHL 1
+
+/*-----------------------------------------------------------------------------+
+ * Defines for MAL/EMAC interrupt conditions as reported in the UIC (Universal
+ * Interrupt Controller).
+ *-----------------------------------------------------------------------------*/
+#define MAL_UIC_ERR ( UIC_MAL_SERR | UIC_MAL_TXDE | UIC_MAL_RXDE)
+#define MAL_UIC_DEF (UIC_MAL_RXEOB | MAL_UIC_ERR)
+#define EMAC_UIC_DEF UIC_ENET
+
+/*-----------------------------------------------------------------------------+
+ * Global variables. TX and RX descriptors and buffers.
+ *-----------------------------------------------------------------------------*/
+static volatile mal_desc_t *tx;
+static volatile mal_desc_t *rx;
+static mal_desc_t *alloc_tx_buf = NULL;
+static mal_desc_t *alloc_rx_buf = NULL;
+
+/* IER globals */
+static unsigned long emac_ier;
+static unsigned long mal_ier;
+
+
+/* Statistic Areas */
+#define MAX_ERR_LOG 10
+struct emac_stats {
+ int data_len_err;
+ int rx_frames;
+ int rx;
+ int rx_prot_err;
+};
+
+static struct stats { /* Statistic Block */
+ struct emac_stats emac;
+ int int_err;
+ short tx_err_log[MAX_ERR_LOG];
+ short rx_err_log[MAX_ERR_LOG];
+} stats;
+
+static int first_init = 0;
+
+static int tx_err_index = 0; /* Transmit Error Index for tx_err_log */
+static int rx_err_index = 0; /* Receive Error Index for rx_err_log */
+
+static int rx_slot = 0; /* MAL Receive Slot */
+static int rx_i_index = 0; /* Receive Interrupt Queue Index */
+static int rx_u_index = 0; /* Receive User Queue Index */
+static int rx_ready[NUM_RX_BUFF]; /* Receive Ready Queue */
+
+static int tx_slot = 0; /* MAL Transmit Slot */
+static int tx_i_index = 0; /* Transmit Interrupt Queue Index */
+static int tx_u_index = 0; /* Transmit User Queue Index */
+static int tx_run[NUM_TX_BUFF]; /* Transmit Running Queue */
+
+#undef INFO_405_ENET 1
+#ifdef INFO_405_ENET
+static int packetSent = 0;
+static int packetReceived = 0;
+static int packetHandled = 0;
+#endif
+
+static char emac_hwd_addr[ENET_ADDR_LENGTH];
+
+static bd_t *bis_save = NULL; /* for eth_init upon mal error */
+
+static int is_receiving = 0; /* sync with eth interrupt */
+static int print_speed = 1; /* print speed message upon start */
+
+static void enet_rcv (unsigned long malisr);
+
+/*-----------------------------------------------------------------------------+
+ * Prototypes and externals.
+ *-----------------------------------------------------------------------------*/
+void mal_err (unsigned long isr, unsigned long uic, unsigned long mal_def,
+ unsigned long mal_errr);
+void emac_err (unsigned long isr);
+
+
+void eth_halt (void)
+{
+ mtdcr (malier, 0x00000000); /* disable mal interrupts */
+ out32 (EMAC_IER, 0x00000000); /* disable emac interrupts */
+
+ /* 1st reset MAL */
+ mtdcr (malmcr, MAL_CR_MMSR);
+
+ /* wait for reset */
+ while (mfdcr (malmcr) & MAL_CR_MMSR) {
+ };
+
+ /* EMAC RESET */
+ out32 (EMAC_M0, EMAC_M0_SRST);
+
+ print_speed = 1; /* print speed message again next time */
+}
+
+
+int eth_init (bd_t * bis)
+{
+ int i;
+ unsigned long reg;
+ unsigned long msr;
+ unsigned long speed;
+ unsigned long duplex;
+ unsigned mode_reg;
+ unsigned short reg_short;
+
+ msr = mfmsr ();
+ mtmsr (msr & ~(MSR_EE)); /* disable interrupts */
+
+#ifdef INFO_405_ENET
+ /* AS.HARNOIS
+ * We should have :
+ * packetHandled <= packetReceived <= packetHandled+PKTBUFSRX
+ * In the most cases packetHandled = packetReceived, but it
+ * is possible that new packets (without relationship with
+ * current transfer) have got the time to arrived before
+ * netloop calls eth_halt
+ */
+ printf ("About preceeding transfer:\n"
+ "- Sent packet number %d\n"
+ "- Received packet number %d\n"
+ "- Handled packet number %d\n",
+ packetSent, packetReceived, packetHandled);
+ packetSent = 0;
+ packetReceived = 0;
+ packetHandled = 0;
+#endif
+
+ /* MAL RESET */
+ mtdcr (malmcr, MAL_CR_MMSR);
+ /* wait for reset */
+ while (mfdcr (malmcr) & MAL_CR_MMSR) {
+ };
+
+ tx_err_index = 0; /* Transmit Error Index for tx_err_log */
+ rx_err_index = 0; /* Receive Error Index for rx_err_log */
+
+ rx_slot = 0; /* MAL Receive Slot */
+ rx_i_index = 0; /* Receive Interrupt Queue Index */
+ rx_u_index = 0; /* Receive User Queue Index */
+
+ tx_slot = 0; /* MAL Transmit Slot */
+ tx_i_index = 0; /* Transmit Interrupt Queue Index */
+ tx_u_index = 0; /* Transmit User Queue Index */
+
+#if defined(CONFIG_440)
+ /* set RMII mode */
+ out32 (ZMII_FER, ZMII_RMII | ZMII_MDI0);
+#endif /* CONFIG_440 */
+
+ /* EMAC RESET */
+ out32 (EMAC_M0, EMAC_M0_SRST);
+
+ /* wait for PHY to complete auto negotiation */
+ reg_short = 0;
+#ifndef CONFIG_CS8952_PHY
+ miiphy_read (CONFIG_PHY_ADDR, PHY_BMSR, &reg_short);
+
+ /*
+ * Wait if PHY is able of autonegotiation and autonegotiation is not complete
+ */
+ if ((reg_short & PHY_BMSR_AUTN_ABLE)
+ && !(reg_short & PHY_BMSR_AUTN_COMP)) {
+ puts ("Waiting for PHY auto negotiation to complete");
+ i = 0;
+ while (!(reg_short & PHY_BMSR_AUTN_COMP)) {
+ if ((i++ % 100) == 0)
+ putc ('.');
+ udelay (10000); /* 10 ms */
+ miiphy_read (CONFIG_PHY_ADDR, PHY_BMSR, &reg_short);
+
+ /*
+ * Timeout reached ?
+ */
+ if (i * 10 > PHY_AUTONEGOTIATE_TIMEOUT) {
+ puts (" TIMEOUT !\n");
+ break;
+ }
+ }
+ puts (" done\n");
+ udelay (500000); /* another 500 ms (results in faster booting) */
+ }
+#endif
+ speed = miiphy_speed (CONFIG_PHY_ADDR);
+ duplex = miiphy_duplex (CONFIG_PHY_ADDR);
+ if (print_speed) {
+ print_speed = 0;
+ printf ("ENET Speed is %d Mbps - %s duplex connection\n",
+ (int) speed, (duplex == HALF) ? "HALF" : "FULL");
+ }
+
+ /* set the Mal configuration reg */
+#if defined(CONFIG_440)
+ /* Errata 1.12: MAL_1 -- Disable MAL bursting */
+ if( get_pvr() == PVR_440GP_RB )
+ mtdcr (malmcr, MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
+ else
+#else
+ mtdcr (malmcr, MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
+#endif
+
+ /* Free "old" buffers */
+ if (alloc_tx_buf) free(alloc_tx_buf);
+ if (alloc_rx_buf) free(alloc_rx_buf);
+
+ /*
+ * Malloc MAL buffer desciptors, make sure they are
+ * aligned on cache line boundary size
+ * (401/403/IOP480 = 16, 405 = 32)
+ * and doesn't cross cache block boundaries.
+ */
+ alloc_tx_buf = (mal_desc_t *)malloc((sizeof(mal_desc_t) * NUM_TX_BUFF) +
+ ((2 * CFG_CACHELINE_SIZE) - 2));
+ if (((int)alloc_tx_buf & CACHELINE_MASK) != 0) {
+ tx = (mal_desc_t *)((int)alloc_tx_buf + CFG_CACHELINE_SIZE -
+ ((int)alloc_tx_buf & CACHELINE_MASK));
+ } else {
+ tx = alloc_tx_buf;
+ }
+
+ alloc_rx_buf = (mal_desc_t *)malloc((sizeof(mal_desc_t) * NUM_RX_BUFF) +
+ ((2 * CFG_CACHELINE_SIZE) - 2));
+ if (((int)alloc_rx_buf & CACHELINE_MASK) != 0) {
+ rx = (mal_desc_t *)((int)alloc_rx_buf + CFG_CACHELINE_SIZE -
+ ((int)alloc_rx_buf & CACHELINE_MASK));
+ } else {
+ rx = alloc_rx_buf;
+ }
+
+ for (i = 0; i < NUM_TX_BUFF; i++) {
+ tx[i].ctrl = 0;
+ tx[i].data_len = 0;
+ if (first_init == 0)
+ txbuf_ptr = (char *) malloc (ENET_MAX_MTU_ALIGNED);
+ tx[i].data_ptr = txbuf_ptr;
+ if ((NUM_TX_BUFF - 1) == i)
+ tx[i].ctrl |= MAL_TX_CTRL_WRAP;
+ tx_run[i] = -1;
+#if 0
+ printf ("TX_BUFF %d @ 0x%08lx\n", i, (ulong) tx[i].data_ptr);
+#endif
+ }
+
+ for (i = 0; i < NUM_RX_BUFF; i++) {
+ rx[i].ctrl = 0;
+ rx[i].data_len = 0;
+ /* rx[i].data_ptr = (char *) &rx_buff[i]; */
+ rx[i].data_ptr = (char *) NetRxPackets[i];
+ if ((NUM_RX_BUFF - 1) == i)
+ rx[i].ctrl |= MAL_RX_CTRL_WRAP;
+ rx[i].ctrl |= MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR;
+ rx_ready[i] = -1;
+#if 0
+ printf ("RX_BUFF %d @ 0x%08lx\n", i, (ulong) rx[i].data_ptr);
+#endif
+ }
+
+ memcpy (emac_hwd_addr, bis->bi_enetaddr, ENET_ADDR_LENGTH);
+
+ reg = 0x00000000;
+
+ reg |= emac_hwd_addr[0]; /* set high address */
+ reg = reg << 8;
+ reg |= emac_hwd_addr[1];
+
+ out32 (EMAC_IAH, reg);
+
+ reg = 0x00000000;
+ reg |= emac_hwd_addr[2]; /* set low address */
+ reg = reg << 8;
+ reg |= emac_hwd_addr[3];
+ reg = reg << 8;
+ reg |= emac_hwd_addr[4];
+ reg = reg << 8;
+ reg |= emac_hwd_addr[5];
+
+ out32 (EMAC_IAL, reg);
+
+ /* setup MAL tx & rx channel pointers */
+ mtdcr (maltxctp0r, tx);
+ mtdcr (malrxctp0r, rx);
+
+ /* Reset transmit and receive channels */
+ mtdcr (malrxcarr, 0x80000000); /* 2 channels */
+ mtdcr (maltxcarr, 0x80000000); /* 2 channels */
+
+ /* Enable MAL transmit and receive channels */
+ mtdcr (maltxcasr, 0x80000000); /* 1 channel */
+ mtdcr (malrxcasr, 0x80000000); /* 1 channel */
+
+ /* set RX buffer size */
+ mtdcr (malrcbs0, ENET_MAX_MTU_ALIGNED / 16);
+
+ /* set transmit enable & receive enable */
+ out32 (EMAC_M0, EMAC_M0_TXE | EMAC_M0_RXE);
+
+ /* set receive fifo to 4k and tx fifo to 2k */
+ mode_reg = EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K;
+
+ /* set speed */
+ if (speed == _100BASET)
+ mode_reg = mode_reg | EMAC_M1_MF_100MBPS | EMAC_M1_IST;
+ else
+ mode_reg = mode_reg & ~0x00C00000; /* 10 MBPS */
+ if (duplex == FULL)
+ mode_reg = mode_reg | 0x80000000 | EMAC_M1_IST;
+
+ out32 (EMAC_M1, mode_reg);
+
+ /* Enable broadcast and indvidual address */
+ out32 (EMAC_RXM, EMAC_RMR_BAE | EMAC_RMR_IAE
+ /*| EMAC_RMR_ARRP| EMAC_RMR_SFCS | EMAC_RMR_SP */ );
+
+ /* we probably need to set the tx mode1 reg? maybe at tx time */
+
+ /* set transmit request threshold register */
+ out32 (EMAC_TRTR, 0x18000000); /* 256 byte threshold */
+
+ /* set receive low/high water mark register */
+#if defined(CONFIG_440)
+ /* 440GP has a 64 byte burst length */
+ out32 (EMAC_RX_HI_LO_WMARK, 0x80009000);
+ out32 (EMAC_TXM1, 0xf8640000);
+#else /* CONFIG_440 */
+ /* 405s have a 16 byte burst length */
+ out32 (EMAC_RX_HI_LO_WMARK, 0x0f002000);
+#endif /* CONFIG_440 */
+
+ /* Frame gap set */
+ out32 (EMAC_I_FRAME_GAP_REG, 0x00000008);
+
+ if (first_init == 0) {
+ /*
+ * Connect interrupt service routines
+ */
+ irq_install_handler (VECNUM_EWU0, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_MS, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_MTE, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_MRE, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_TXDE, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_RXDE, (interrupt_handler_t *) enetInt, NULL);
+ irq_install_handler (VECNUM_ETH0, (interrupt_handler_t *) enetInt, NULL);
+ }
+
+ /* set up interrupt handler */
+ /* setup interrupt controler to take interrupts from the MAL &
+ EMAC */
+ mtdcr (uicsr, 0xffffffff); /* clear pending interrupts */
+ mtdcr (uicer, mfdcr (uicer) | MAL_UIC_DEF | EMAC_UIC_DEF);
+
+ /* set the MAL IER ??? names may change with new spec ??? */
+ mal_ier = MAL_IER_DE | MAL_IER_NE | MAL_IER_TE | MAL_IER_OPBE |
+ MAL_IER_PLBE;
+ mtdcr (malesr, 0xffffffff); /* clear pending interrupts */
+ mtdcr (maltxdeir, 0xffffffff); /* clear pending interrupts */
+ mtdcr (malrxdeir, 0xffffffff); /* clear pending interrupts */
+ mtdcr (malier, mal_ier);
+
+ /* Set EMAC IER */
+ emac_ier = EMAC_ISR_PTLE | EMAC_ISR_BFCS |
+ EMAC_ISR_PTLE | EMAC_ISR_ORE | EMAC_ISR_IRE;
+ if (speed == _100BASET)
+ emac_ier = emac_ier | EMAC_ISR_SYE;
+
+ out32 (EMAC_ISR, 0xffffffff); /* clear pending interrupts */
+ out32 (EMAC_IER, emac_ier);
+
+ mtmsr (msr); /* enable interrupts again */
+
+ bis_save = bis;
+ first_init = 1;
+
+ return (0);
+}
+
+
+int eth_send (volatile void *ptr, int len)
+{
+ struct enet_frame *ef_ptr;
+ ulong time_start, time_now;
+ unsigned long temp_txm0;
+
+ ef_ptr = (struct enet_frame *) ptr;
+
+ /*-----------------------------------------------------------------------+
+ * Copy in our address into the frame.
+ *-----------------------------------------------------------------------*/
+ (void) memcpy (ef_ptr->source_addr, emac_hwd_addr, ENET_ADDR_LENGTH);
+
+ /*-----------------------------------------------------------------------+
+ * If frame is too long or too short, modify length.
+ *-----------------------------------------------------------------------*/
+ if (len > ENET_MAX_MTU)
+ len = ENET_MAX_MTU;
+
+ /* memcpy ((void *) &tx_buff[tx_slot], (const void *) ptr, len); */
+ memcpy ((void *) txbuf_ptr, (const void *) ptr, len);
+
+ /*-----------------------------------------------------------------------+
+ * set TX Buffer busy, and send it
+ *-----------------------------------------------------------------------*/
+ tx[tx_slot].ctrl = (MAL_TX_CTRL_LAST |
+ EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP) &
+ ~(EMAC_TX_CTRL_ISA | EMAC_TX_CTRL_RSA);
+ if ((NUM_TX_BUFF - 1) == tx_slot)
+ tx[tx_slot].ctrl |= MAL_TX_CTRL_WRAP;
+
+ tx[tx_slot].data_len = (short) len;
+ tx[tx_slot].ctrl |= MAL_TX_CTRL_READY;
+
+ __asm__ volatile ("eieio");
+ out32 (EMAC_TXM0, in32 (EMAC_TXM0) | EMAC_TXM0_GNP0);
+#ifdef INFO_405_ENET
+ packetSent++;
+#endif
+
+ /*-----------------------------------------------------------------------+
+ * poll unitl the packet is sent and then make sure it is OK
+ *-----------------------------------------------------------------------*/
+ time_start = get_timer (0);
+ while (1) {
+ temp_txm0 = in32 (EMAC_TXM0);
+ /* loop until either TINT turns on or 3 seconds elapse */
+ if ((temp_txm0 & EMAC_TXM0_GNP0) != 0) {
+ /* transmit is done, so now check for errors
+ * If there is an error, an interrupt should
+ * happen when we return
+ */
+ time_now = get_timer (0);
+ if ((time_now - time_start) > 3000) {
+ return (-1);
+ }
+ } else {
+ return (0);
+ }
+ }
+}
+
+
+#if defined(CONFIG_440)
+/*-----------------------------------------------------------------------------+
+| EnetInt.
+| EnetInt is the interrupt handler. It will determine the
+| cause of the interrupt and call the apporpriate servive
+| routine.
++-----------------------------------------------------------------------------*/
+int enetInt ()
+{
+ int serviced;
+ int rc = -1; /* default to not us */
+ unsigned long mal_isr;
+ unsigned long emac_isr = 0;
+ unsigned long mal_rx_eob;
+ unsigned long my_uic0msr, my_uic1msr;
+
+ /* enter loop that stays in interrupt code until nothing to service */
+ do {
+ serviced = 0;
+
+ my_uic0msr = mfdcr (uic0msr);
+ my_uic1msr = mfdcr (uic1msr);
+
+ if (!(my_uic0msr & UIC_MRE)
+ && !(my_uic1msr & (UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE))) {
+ /* not for us */
+ return (rc);
+ }
+
+ /* get and clear controller status interrupts */
+ /* look at Mal and EMAC interrupts */
+ if ((my_uic0msr & UIC_MRE)
+ || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
+ /* we have a MAL interrupt */
+ mal_isr = mfdcr (malesr);
+ /* look for mal error */
+ if (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE)) {
+ mal_err (mal_isr, my_uic0msr, MAL_UIC_DEF, MAL_UIC_ERR);
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ if (UIC_ETH0 & my_uic1msr) { /* look for EMAC errors */
+ emac_isr = in32 (EMAC_ISR);
+ if ((emac_ier & emac_isr) != 0) {
+ emac_err (emac_isr);
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ if ((emac_ier & emac_isr)
+ || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
+ mtdcr (uic0sr, UIC_MRE); /* Clear */
+ mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
+ return (rc); /* we had errors so get out */
+ }
+
+ /* handle MAL RX EOB interupt from a receive */
+ /* check for EOB on valid channels */
+ if (my_uic0msr & UIC_MRE) {
+ mal_rx_eob = mfdcr (malrxeobisr);
+ if ((mal_rx_eob & 0x80000000) != 0) { /* call emac routine for channel 0 */
+ /* clear EOB
+ mtdcr(malrxeobisr, mal_rx_eob); */
+ enet_rcv (emac_isr);
+ /* indicate that we serviced an interrupt */
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ mtdcr (uic0sr, UIC_MRE); /* Clear */
+ mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
+ } while (serviced);
+
+ return (rc);
+}
+#else /* CONFIG_440 */
+/*-----------------------------------------------------------------------------+
+ * EnetInt.
+ * EnetInt is the interrupt handler. It will determine the
+ * cause of the interrupt and call the apporpriate servive
+ * routine.
+ *-----------------------------------------------------------------------------*/
+int enetInt ()
+{
+ int serviced;
+ int rc = -1; /* default to not us */
+ unsigned long mal_isr;
+ unsigned long emac_isr = 0;
+ unsigned long mal_rx_eob;
+ unsigned long my_uicmsr;
+
+ /* enter loop that stays in interrupt code until nothing to service */
+ do {
+ serviced = 0;
+
+ my_uicmsr = mfdcr (uicmsr);
+ if ((my_uicmsr & (MAL_UIC_DEF | EMAC_UIC_DEF)) == 0) { /* not for us */
+ return (rc);
+ }
+
+
+ /* get and clear controller status interrupts */
+ /* look at Mal and EMAC interrupts */
+ if ((MAL_UIC_DEF & my_uicmsr) != 0) { /* we have a MAL interrupt */
+ mal_isr = mfdcr (malesr);
+ /* look for mal error */
+ if ((my_uicmsr & MAL_UIC_ERR) != 0) {
+ mal_err (mal_isr, my_uicmsr, MAL_UIC_DEF, MAL_UIC_ERR);
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ if ((EMAC_UIC_DEF & my_uicmsr) != 0) { /* look for EMAC errors */
+ emac_isr = in32 (EMAC_ISR);
+ if ((emac_ier & emac_isr) != 0) {
+ emac_err (emac_isr);
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ if (((emac_ier & emac_isr) != 0) | ((MAL_UIC_ERR & my_uicmsr) != 0)) {
+ mtdcr (uicsr, MAL_UIC_DEF | EMAC_UIC_DEF); /* Clear */
+ return (rc); /* we had errors so get out */
+ }
+
+
+ /* handle MAL RX EOB interupt from a receive */
+ /* check for EOB on valid channels */
+ if ((my_uicmsr & UIC_MAL_RXEOB) != 0) {
+ mal_rx_eob = mfdcr (malrxeobisr);
+ if ((mal_rx_eob & 0x80000000) != 0) { /* call emac routine for channel 0 */
+ /* clear EOB
+ mtdcr(malrxeobisr, mal_rx_eob); */
+ enet_rcv (emac_isr);
+ /* indicate that we serviced an interrupt */
+ serviced = 1;
+ rc = 0;
+ }
+ }
+ mtdcr (uicsr, MAL_UIC_DEF | EMAC_UIC_DEF); /* Clear */
+ }
+ while (serviced);
+
+ return (rc);
+}
+#endif /* CONFIG_440 */
+
+/*-----------------------------------------------------------------------------+
+ * MAL Error Routine
+ *-----------------------------------------------------------------------------*/
+void mal_err (unsigned long isr, unsigned long uic, unsigned long maldef,
+ unsigned long mal_errr)
+{
+ mtdcr (malesr, isr); /* clear interrupt */
+
+ /* clear DE interrupt */
+ mtdcr (maltxdeir, 0xC0000000);
+ mtdcr (malrxdeir, 0x80000000);
+
+#if 1 /*sr */
+ printf ("\nMAL error occured.... ISR = %lx UIC = = %lx MAL_DEF = %lx MAL_ERR= %lx \n",
+ isr, uic, maldef, mal_errr);
+#else
+#if 0
+ /*
+ * MAL error is RX DE error (out of rx buffers)! This is OK here, upon
+ * many incoming packets with only 4 rx buffers.
+ */
+ printf ("M"); /* just to see something upon mal error */
+#endif
+#endif /*sr */
+
+ eth_init (bis_save); /* start again... */
+}
+
+/*-----------------------------------------------------------------------------+
+ * EMAC Error Routine
+ *-----------------------------------------------------------------------------*/
+void emac_err (unsigned long isr)
+{
+ printf ("EMAC error occured.... ISR = %lx\n", isr);
+ out32 (EMAC_ISR, isr);
+}
+
+/*-----------------------------------------------------------------------------+
+ * enet_rcv() handles the ethernet receive data
+ *-----------------------------------------------------------------------------*/
+static void enet_rcv (unsigned long malisr)
+{
+ struct enet_frame *ef_ptr;
+ unsigned long data_len;
+ unsigned long rx_eob_isr;
+
+ int handled = 0;
+ int i;
+ int loop_count = 0;
+
+ rx_eob_isr = mfdcr (malrxeobisr);
+ if ((0x80000000 >> (EMAC_RXCHL - 1)) & rx_eob_isr) {
+ /* clear EOB */
+ mtdcr (malrxeobisr, rx_eob_isr);
+
+ /* EMAC RX done */
+ while (1) { /* do all */
+ i = rx_slot;
+
+ if ((MAL_RX_CTRL_EMPTY & rx[i].ctrl)
+ || (loop_count >= NUM_RX_BUFF))
+ break;
+ loop_count++;
+ rx_slot++;
+ if (NUM_RX_BUFF == rx_slot)
+ rx_slot = 0;
+ handled++;
+ data_len = (unsigned long) rx[i].data_len; /* Get len */
+ if (data_len) {
+ if (data_len > ENET_MAX_MTU) /* Check len */
+ data_len = 0;
+ else {
+ if (EMAC_RX_ERRORS & rx[i].ctrl) { /* Check Errors */
+ data_len = 0;
+ stats.rx_err_log[rx_err_index] = rx[i].ctrl;
+ rx_err_index++;
+ if (rx_err_index == MAX_ERR_LOG)
+ rx_err_index = 0;
+ } /* emac_erros */
+ } /* data_len < max mtu */
+ } /* if data_len */
+ if (!data_len) { /* no data */
+ rx[i].ctrl |= MAL_RX_CTRL_EMPTY; /* Free Recv Buffer */
+
+ stats.emac.data_len_err++; /* Error at Rx */
+ }
+
+ /* !data_len */
+ /* AS.HARNOIS */
+ /* Check if user has already eaten buffer */
+ /* if not => ERROR */
+ else if (rx_ready[rx_i_index] != -1) {
+ if (is_receiving)
+ printf ("ERROR : Receive buffers are full!\n");
+ break;
+ } else {
+ stats.emac.rx_frames++;
+ stats.emac.rx += data_len;
+ ef_ptr = (struct enet_frame *) rx[i].data_ptr;
+#ifdef INFO_405_ENET
+ packetReceived++;
+#endif
+ /* AS.HARNOIS
+ * use ring buffer
+ */
+ rx_ready[rx_i_index] = i;
+ rx_i_index++;
+ if (NUM_RX_BUFF == rx_i_index)
+ rx_i_index = 0;
+
+ /* printf("X"); /|* test-only *|/ */
+
+ /* AS.HARNOIS
+ * free receive buffer only when
+ * buffer has been handled (eth_rx)
+ rx[i].ctrl |= MAL_RX_CTRL_EMPTY;
+ */
+ } /* if data_len */
+ } /* while */
+ } /* if EMACK_RXCHL */
+}
+
+
+int eth_rx (void)
+{
+ int length;
+ int user_index;
+ unsigned long msr;
+
+ is_receiving = 1; /* tell driver */
+
+ for (;;) {
+ /* AS.HARNOIS
+ * use ring buffer and
+ * get index from rx buffer desciptor queue
+ */
+ user_index = rx_ready[rx_u_index];
+ if (user_index == -1) {
+ length = -1;
+ break; /* nothing received - leave for() loop */
+ }
+
+ msr = mfmsr ();
+ mtmsr (msr & ~(MSR_EE));
+
+ length = rx[user_index].data_len;
+
+ /* Pass the packet up to the protocol layers. */
+ /* NetReceive(NetRxPackets[rxIdx], length - 4); */
+ /* NetReceive(NetRxPackets[i], length); */
+ NetReceive (NetRxPackets[user_index], length - 4);
+ /* Free Recv Buffer */
+ rx[user_index].ctrl |= MAL_RX_CTRL_EMPTY;
+ /* Free rx buffer descriptor queue */
+ rx_ready[rx_u_index] = -1;
+ rx_u_index++;
+ if (NUM_RX_BUFF == rx_u_index)
+ rx_u_index = 0;
+
+#ifdef INFO_405_ENET
+ packetHandled++;
+#endif
+
+ mtmsr (msr); /* Enable IRQ's */
+ }
+
+ is_receiving = 0; /* tell driver */
+
+ return length;
+}
+
+#endif /* CONFIG_405GP */
diff --git a/cpu/ppc4xx/405gp_pci.c b/cpu/ppc4xx/405gp_pci.c
new file mode 100644
index 0000000..1c2c59b
--- /dev/null
+++ b/cpu/ppc4xx/405gp_pci.c
@@ -0,0 +1,502 @@
+/*-----------------------------------------------------------------------------+
+ *
+ * This source code has been made available to you by IBM on an AS-IS
+ * basis. Anyone receiving this source is licensed under IBM
+ * copyrights to use it in any way he or she deems fit, including
+ * copying it, modifying it, compiling it, and redistributing it either
+ * with or without modifications. No license under IBM patents or
+ * patent applications is to be implied by the copyright license.
+ *
+ * Any user of this software should understand that IBM cannot provide
+ * technical support for this software and will not be responsible for
+ * any consequences resulting from the use of this software.
+ *
+ * Any person who transfers this source code or any derivative work
+ * must include the IBM copyright notice, this paragraph, and the
+ * preceding two paragraphs in the transferred software.
+ *
+ * COPYRIGHT I B M CORPORATION 1995
+ * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+ *-----------------------------------------------------------------------------*/
+/*----------------------------------------------------------------------------+
+ *
+ * File Name: 405gp_pci.c
+ *
+ * Function: Initialization code for the 405GP PCI Configuration regs.
+ *
+ * Author: Mark Game
+ *
+ * Change Activity-
+ *
+ * Date Description of Change BY
+ * --------- --------------------- ---
+ * 09-Sep-98 Created MCG
+ * 02-Nov-98 Removed External arbiter selected message JWB
+ * 27-Nov-98 Zero out PTMBAR2 and disable in PTM2MS JWB
+ * 04-Jan-99 Zero out other unused PMM and PTM regs. Change bus scan MCG
+ * from (0 to n) to (1 to n).
+ * 17-May-99 Port to Walnut JWB
+ * 17-Jun-99 Updated for VGA support JWB
+ * 21-Jun-99 Updated to allow SRAM region to be a target from PCI bus JWB
+ * 19-Jul-99 Updated for 405GP pass 1 errata #26 (Low PCI subsequent MCG
+ * target latency timer values are not supported).
+ * Should be fixed in pass 2.
+ * 09-Sep-99 Removed use of PTM2 since the SRAM region no longer needs JWB
+ * to be a PCI target. Zero out PTMBAR2 and disable in PTM2MS.
+ * 10-Dec-99 Updated PCI_Write_CFG_Reg for pass2 errata #6 JWB
+ * 11-Jan-00 Ensure PMMxMAs disabled before setting PMMxLAs. This is not
+ * really required after a reset since PMMxMAs are already
+ * disabled but is a good practice nonetheless. JWB
+ * 12-Jun-01 stefan.roese@esd-electronics.com
+ * - PCI host/adapter handling reworked
+ * 09-Jul-01 stefan.roese@esd-electronics.com
+ * - PCI host now configures from device 0 (not 1) to max_dev,
+ * (host configures itself)
+ * - On CPCI-405 pci base address and size is generated from
+ * SDRAM and FLASH size (CFG regs not used anymore)
+ * - Some minor changes for CPCI-405-A (adapter version)
+ * 14-Sep-01 stefan.roese@esd-electronics.com
+ * - CONFIG_PCI_SCAN_SHOW added to print pci devices upon startup
+ * 28-Sep-01 stefan.roese@esd-electronics.com
+ * - Changed pci master configuration for linux compatibility
+ * (no need for bios_fixup() anymore)
+ * 26-Feb-02 stefan.roese@esd-electronics.com
+ * - Bug fixed in pci configuration (Andrew May)
+ * - Removed pci class code init for CPCI405 board
+ * 15-May-02 stefan.roese@esd-electronics.com
+ * - New vga device handling
+ * 29-May-02 stefan.roese@esd-electronics.com
+ * - PCI class code init added (if defined)
+ *----------------------------------------------------------------------------*/
+
+#include <common.h>
+#include <command.h>
+#include <cmd_boot.h>
+#if !defined(CONFIG_440)
+#include <405gp_pci.h>
+#endif
+#include <asm/processor.h>
+#include <pci.h>
+
+#if defined(CONFIG_405GP)
+
+#ifdef CONFIG_PCI
+
+/*#define DEBUG*/
+
+/*-----------------------------------------------------------------------------+
+ * pci_init. Initializes the 405GP PCI Configuration regs.
+ *-----------------------------------------------------------------------------*/
+void pci_405gp_init(struct pci_controller *hose)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ int i, reg_num = 0;
+ bd_t *bd = gd->bd;
+
+ unsigned short temp_short;
+ unsigned long ptmpcila[2] = {CFG_PCI_PTM1PCI, CFG_PCI_PTM2PCI};
+#if defined(CONFIG_CPCI405)
+ unsigned long ptmla[2] = {bd->bi_memstart, bd->bi_flashstart};
+ unsigned long ptmms[2] = {~(bd->bi_memsize - 1) | 1, ~(bd->bi_flashsize - 1) | 1};
+#else
+ unsigned long ptmla[2] = {CFG_PCI_PTM1LA, CFG_PCI_PTM2LA};
+ unsigned long ptmms[2] = {CFG_PCI_PTM1MS, CFG_PCI_PTM2MS};
+#endif
+#if defined(CONFIG_PIP405) || defined (CONFIG_MIP405)
+ unsigned long pmmla[3] = {0x80000000, 0xA0000000, 0};
+ unsigned long pmmma[3] = {0xE0000001, 0xE0000001, 0};
+ unsigned long pmmpcila[3] = {0x80000000, 0x00000000, 0};
+ unsigned long pmmpciha[3] = {0x00000000, 0x00000000, 0};
+#else
+ unsigned long pmmla[3] = {0x80000000, 0,0};
+ unsigned long pmmma[3] = {0xC0000001, 0,0};
+ unsigned long pmmpcila[3] = {0x80000000, 0,0};
+ unsigned long pmmpciha[3] = {0x00000000, 0,0};
+#endif
+
+ /*
+ * Register the hose
+ */
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ /* ISA/PCI I/O space */
+ pci_set_region(hose->regions + reg_num++,
+ MIN_PCI_PCI_IOADDR,
+ MIN_PLB_PCI_IOADDR,
+ 0x10000,
+ PCI_REGION_IO);
+
+ /* PCI I/O space */
+ pci_set_region(hose->regions + reg_num++,
+ 0x00800000,
+ 0xe8800000,
+ 0x03800000,
+ PCI_REGION_IO);
+
+ reg_num = 2;
+
+ /* Memory spaces */
+ for (i=0; i<2; i++)
+ if (ptmms[i] & 1)
+ {
+ if (!i) hose->pci_fb = hose->regions + reg_num;
+
+ pci_set_region(hose->regions + reg_num++,
+ ptmpcila[i], ptmla[i],
+ ~(ptmms[i] & 0xfffff000) + 1,
+ PCI_REGION_MEM |
+ PCI_REGION_MEMORY);
+ }
+
+ /* PCI memory spaces */
+ for (i=0; i<3; i++)
+ if (pmmma[i] & 1)
+ {
+ pci_set_region(hose->regions + reg_num++,
+ pmmpcila[i], pmmla[i],
+ ~(pmmma[i] & 0xfffff000) + 1,
+ PCI_REGION_MEM);
+ }
+
+ hose->region_count = reg_num;
+
+ pci_setup_indirect(hose,
+ PCICFGADR,
+ PCICFGDATA);
+
+ if (hose->pci_fb)
+ pciauto_region_init(hose->pci_fb);
+
+ pci_register_hose(hose);
+
+ /*--------------------------------------------------------------------------+
+ * 405GP PCI Master configuration.
+ * Map one 512 MB range of PLB/processor addresses to PCI memory space.
+ * PLB address 0x80000000-0xBFFFFFFF ==> PCI address 0x80000000-0xBFFFFFFF
+ * Use byte reversed out routines to handle endianess.
+ *--------------------------------------------------------------------------*/
+ out32r(PMM0MA, pmmma[0]); /* ensure disabled b4 setting PMM0LA */
+ out32r(PMM0LA, pmmla[0]);
+ out32r(PMM0PCILA, pmmpcila[0]);
+ out32r(PMM0PCIHA, pmmpciha[0]);
+ out32r(PMM0MA, pmmma[0]);
+
+ /*--------------------------------------------------------------------------+
+ * PMM1 is not used. Initialize them to zero.
+ *--------------------------------------------------------------------------*/
+ out32r(PMM1MA, pmmma[1]); /* ensure disabled b4 setting PMM2LA */
+ out32r(PMM1LA, pmmla[1]);
+ out32r(PMM1PCILA, pmmpcila[1]);
+ out32r(PMM1PCIHA, pmmpciha[1]);
+ out32r(PMM1MA, pmmma[1]);
+
+ /*--------------------------------------------------------------------------+
+ * PMM2 is not used. Initialize them to zero.
+ *--------------------------------------------------------------------------*/
+ out32r(PMM2MA, pmmma[2]); /* ensure disabled b4 setting PMM2LA */
+ out32r(PMM2LA, pmmla[2]);
+ out32r(PMM2PCILA, pmmpcila[2]);
+ out32r(PMM2PCIHA, pmmpciha[2]);
+ out32r(PMM2MA, pmmma[2]);
+
+ /*--------------------------------------------------------------------------+
+ * 405GP PCI Target configuration. (PTM1)
+ * Note: PTM1MS is hardwire enabled but we set the enable bit anyway.
+ *--------------------------------------------------------------------------*/
+ out32r(PTM1LA, ptmla[0]); /* insert address */
+ out32r(PTM1MS, ptmms[0]); /* insert size, enable bit is 1 */
+
+ /*--------------------------------------------------------------------------+
+ * 405GP PCI Target configuration. (PTM2)
+ *--------------------------------------------------------------------------*/
+ out32r(PTM2LA, ptmla[1]); /* insert address */
+ if (ptmms[1] == 0)
+ {
+ out32r(PTM2MS, 0x00000001); /* set enable bit */
+ pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_2, 0x00000000);
+ out32r(PTM2MS, 0x00000000); /* disable */
+ }
+ else
+ {
+ out32r(PTM2MS, ptmms[1]); /* insert size, enable bit is 1 */
+ }
+
+ /*
+ * Insert Subsystem Vendor and Device ID
+ */
+ pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_VENDOR_ID, CFG_PCI_SUBSYS_VENDORID);
+#ifdef CONFIG_CPCI405
+ if (mfdcr(strap) & PSR_PCI_ARBIT_EN)
+ pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_DEVICEID);
+ else
+ pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_DEVICEID2);
+#else
+ pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_DEVICEID);
+#endif
+
+ /*
+ * Insert Class-code
+ */
+#ifdef CFG_PCI_CLASSCODE
+ pci_write_config_word(PCIDEVID_405GP, PCI_CLASS_SUB_CODE, CFG_PCI_CLASSCODE);
+#endif /* CFG_PCI_CLASSCODE */
+
+ /*--------------------------------------------------------------------------+
+ * If PCI speed = 66Mhz, set 66Mhz capable bit.
+ *--------------------------------------------------------------------------*/
+ if (bd->bi_pci_busfreq >= 66000000) {
+ pci_read_config_word(PCIDEVID_405GP, PCI_STATUS, &temp_short);
+ pci_write_config_word(PCIDEVID_405GP,PCI_STATUS,(temp_short|PCI_STATUS_66MHZ));
+ }
+
+#if (CONFIG_PCI_HOST != PCI_HOST_ADAPTER)
+#if (CONFIG_PCI_HOSE == PCI_HOST_AUTO)
+ if (mfdcr(strap) & PSR_PCI_ARBIT_EN)
+#endif
+ {
+ /*--------------------------------------------------------------------------+
+ * Write the 405GP PCI Configuration regs.
+ * Enable 405GP to be a master on the PCI bus (PMM).
+ * Enable 405GP to act as a PCI memory target (PTM).
+ *--------------------------------------------------------------------------*/
+ pci_read_config_word(PCIDEVID_405GP, PCI_COMMAND, &temp_short);
+ pci_write_config_word(PCIDEVID_405GP, PCI_COMMAND, temp_short |
+ PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
+ }
+#endif
+
+ /*
+ * Set HCE bit (Host Configuration Enabled)
+ */
+ pci_read_config_word(PCIDEVID_405GP, PCIBRDGOPT2, &temp_short);
+ pci_write_config_word(PCIDEVID_405GP, PCIBRDGOPT2, (temp_short | 0x0001));
+
+#ifdef CONFIG_PCI_PNP
+ /*--------------------------------------------------------------------------+
+ * Scan the PCI bus and configure devices found.
+ *--------------------------------------------------------------------------*/
+#if (CONFIG_PCI_HOST == PCI_HOST_AUTO)
+ if (mfdcr(strap) & PSR_PCI_ARBIT_EN)
+#endif
+ {
+#ifdef CONFIG_PCI_SCAN_SHOW
+ printf("PCI: Bus Dev VenId DevId Class Int\n");
+#endif
+
+ hose->last_busno = pci_hose_scan(hose);
+ }
+#endif /* CONFIG_PCI_PNP */
+
+}
+
+/*
+ * drivers/pci.c skips every host bridge but the 405GP since it could
+ * be set as an Adapter.
+ *
+ * I (Andrew May) don't know what we should do here, but I don't want
+ * the auto setup of a PCI device disabling what is done pci_405gp_init
+ * as has happened before.
+ */
+void pci_405gp_setup_bridge(struct pci_controller *hose, pci_dev_t dev,
+ struct pci_config_table *entry)
+{
+#ifdef DEBUG
+ printf("405gp_setup_bridge\n");
+#endif
+}
+
+/*
+ *
+ */
+
+void pci_405gp_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
+{
+ unsigned char int_line = 0xff;
+
+ /*
+ * Write pci interrupt line register (cpci405 specific)
+ */
+ switch (PCI_DEV(dev) & 0x03)
+ {
+ case 0:
+ int_line = 27 + 2;
+ break;
+ case 1:
+ int_line = 27 + 3;
+ break;
+ case 2:
+ int_line = 27 + 0;
+ break;
+ case 3:
+ int_line = 27 + 1;
+ break;
+ }
+
+ pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
+}
+
+void pci_405gp_setup_vga(struct pci_controller *hose, pci_dev_t dev,
+ struct pci_config_table *entry)
+{
+ unsigned int cmdstat = 0;
+
+ pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
+
+ /* always enable io space on vga boards */
+ pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat);
+ cmdstat |= PCI_COMMAND_IO;
+ pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat);
+}
+
+#if !(defined(CONFIG_PIP405) || defined (CONFIG_MIP405))
+
+/*
+ *As is these functs get called out of flash Not a horrible
+ *thing, but something to keep in mind. (no statics?)
+ */
+static struct pci_config_table pci_405gp_config_table[] = {
+/*if VendID is 0 it terminates the table search (ie Walnut)*/
+#if CFG_PCI_SUBSYS_VENDORID
+ {CFG_PCI_SUBSYS_VENDORID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_bridge},
+#endif
+ {PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga},
+
+ {PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NOT_DEFINED_VGA,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga},
+
+ { }
+};
+
+static struct pci_controller hose = {
+ fixup_irq: pci_405gp_fixup_irq,
+ config_table: pci_405gp_config_table,
+};
+
+void pci_init(void)
+{
+ /*we want the ptrs to RAM not flash (ie don't use init list)*/
+ hose.fixup_irq = pci_405gp_fixup_irq;
+ hose.config_table = pci_405gp_config_table;
+ pci_405gp_init(&hose);
+}
+
+#endif
+
+#endif /* CONFIG_PCI */
+
+#endif /* CONFIG_405GP */
+
+/*-----------------------------------------------------------------------------+
+ * CONFIG_440
+ *-----------------------------------------------------------------------------*/
+#if defined(CONFIG_440) && defined(CONFIG_PCI)
+
+static struct pci_controller ppc440_hose = {0};
+
+
+void pci_440_init (struct pci_controller *hose)
+{
+ int reg_num = 0;
+ unsigned long strap;
+
+ /*--------------------------------------------------------------------------+
+ * The PCI initialization sequence enable bit must be set ... if not abort
+ * pci setup since updating the bit requires chip reset.
+ *--------------------------------------------------------------------------*/
+ strap = mfdcr(cpc0_strp1);
+ if( (strap & 0x00040000) == 0 ){
+ printf("PCI: CPC0_STRP1[PISE] not set.\n");
+ printf("PCI: Configuration aborted.\n");
+ return;
+ }
+
+ /*--------------------------------------------------------------------------+
+ * PCI controller init
+ *--------------------------------------------------------------------------*/
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ pci_set_region(hose->regions + reg_num++,
+ 0x00000000,
+ PCIX0_IOBASE,
+ 0x10000,
+ PCI_REGION_IO);
+
+ pci_set_region(hose->regions + reg_num++,
+ CFG_PCI_TARGBASE,
+ CFG_PCI_MEMBASE,
+ 0x10000000,
+ PCI_REGION_MEM );
+ hose->region_count = reg_num;
+
+ pci_setup_indirect(hose, PCIX0_CFGADR, PCIX0_CFGDATA);
+
+#if defined(CFG_PCI_PRE_INIT)
+ /* Let board change/modify hose & do initial checks */
+ if( pci_pre_init (hose) == 0 ){
+ printf("PCI: Board-specific initialization failed.\n");
+ printf("PCI: Configuration aborted.\n");
+ return;
+ }
+#endif
+
+ pci_register_hose( hose );
+
+ /*--------------------------------------------------------------------------+
+ * PCI target init
+ *--------------------------------------------------------------------------*/
+#if defined(CFG_PCI_TARGET_INIT)
+ pci_target_init(hose); /* Let board setup pci target */
+#else
+ out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
+ out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_ID );
+ out16r( PCIX0_CLS, 0x00060000 ); /* Bridge, host bridge */
+#endif
+
+ out32r( PCIX0_BRDGOPT1, 0x10000060 ); /* PLB Rq pri highest */
+ out32r( PCIX0_BRDGOPT2, in32(PCIX0_BRDGOPT2) | 1 ); /* Enable host config */
+
+ /*--------------------------------------------------------------------------+
+ * PCI master init: default is one 256MB region for PCI memory:
+ * 0x3_00000000 - 0x3_0FFFFFFF ==> CFG_PCI_MEMBASE
+ *--------------------------------------------------------------------------*/
+#if defined(CFG_PCI_MASTER_INIT)
+ pci_master_init(hose); /* Let board setup pci master */
+#else
+ out32r( PCIX0_POM0SA, 0 ); /* disable */
+ out32r( PCIX0_POM1SA, 0 ); /* disable */
+ out32r( PCIX0_POM2SA, 0 ); /* disable */
+ out32r( PCIX0_POM0LAL, 0x00000000 );
+ out32r( PCIX0_POM0LAH, 0x00000003 );
+ out32r( PCIX0_POM0PCIAL, CFG_PCI_MEMBASE );
+ out32r( PCIX0_POM0PCIAH, 0x00000000 );
+ out32r( PCIX0_POM0SA, 0xf0000001 ); /* 256MB, enabled */
+ out32r( PCIX0_STS, in32r( PCIX0_STS ) & ~0x0000fff8 );
+#endif
+
+ /*--------------------------------------------------------------------------+
+ * PCI host configuration -- we don't make any assumptions here ... the
+ * _board_must_indicate_ what to do -- there's just too many runtime
+ * scenarios in environments like cPCI, PPMC, etc. to make a determination
+ * based on hard-coded values or state of arbiter enable.
+ *--------------------------------------------------------------------------*/
+ if( is_pci_host(hose) ){
+#ifdef CONFIG_PCI_SCAN_SHOW
+ printf("PCI: Bus Dev VenId DevId Class Int\n");
+#endif
+ out16r( PCIX0_CMD, in16r( PCIX0_CMD ) | PCI_COMMAND_MASTER);
+ hose->last_busno = pci_hose_scan(hose);
+ }
+}
+
+
+void pci_init(void)
+{
+ pci_440_init (&ppc440_hose);
+}
+
+#endif /* CONFIG_440 & CONFIG_PCI */
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
new file mode 100644
index 0000000..8aaffb1
--- /dev/null
+++ b/cpu/ppc4xx/cpu.c
@@ -0,0 +1,253 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * m8xx.c
+ *
+ * CPU specific code
+ *
+ * written or collected and sometimes rewritten by
+ * Magnus Damm <damm@bitsmart.com>
+ *
+ * minor modifications by
+ * Wolfgang Denk <wd@denx.de>
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <asm/cache.h>
+#include <ppc4xx.h>
+
+
+#if defined(CONFIG_440)
+static int do_chip_reset( unsigned long sys0, unsigned long sys1 );
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+int checkcpu (void)
+{
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_IOP480) || defined(CONFIG_440)
+ uint pvr = get_pvr();
+#endif
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_IOP480)
+ DECLARE_GLOBAL_DATA_PTR;
+
+ ulong clock = gd->cpu_clk;
+ char buf[32];
+#endif
+
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR)
+ PPC405_SYS_INFO sys_info;
+
+ puts ("CPU: ");
+
+ get_sys_info(&sys_info);
+
+#if CONFIG_405GP
+ puts("IBM PowerPC 405GP");
+ if (pvr == PVR_405GPR_RA) {
+ putc('r');
+ }
+ puts(" Rev. ");
+#endif
+#if CONFIG_405CR
+ puts("IBM PowerPC 405CR Rev. ");
+#endif
+ switch (pvr) {
+ case PVR_405GP_RB:
+ putc('B');
+ break;
+ case PVR_405GP_RC:
+#if CONFIG_405CR
+ case PVR_405CR_RC:
+#endif
+ putc('C');
+ break;
+ case PVR_405GP_RD:
+ putc('D');
+ break;
+#if CONFIG_405GP
+ case PVR_405GP_RE:
+ putc('E');
+ break;
+#endif
+ case PVR_405CR_RA:
+ case PVR_405GPR_RA:
+ putc('A');
+ break;
+ case PVR_405CR_RB:
+ putc('B');
+ break;
+ default:
+ printf("? (PVR=%08x)", pvr);
+ break;
+ }
+
+ printf(" at %s MHz (PLB=%lu, OPB=%lu, EBC=%lu MHz)\n", strmhz(buf, clock),
+ sys_info.freqPLB / 1000000,
+ sys_info.freqPLB / sys_info.pllOpbDiv / 1000000,
+ sys_info.freqPLB / sys_info.pllExtBusDiv / 1000000);
+
+#if CONFIG_405GP
+ if (mfdcr(strap) & PSR_PCI_ASYNC_EN)
+ printf(" PCI async ext clock used, ");
+ else
+ printf(" PCI sync clock at %lu MHz, ",
+ sys_info.freqPLB / sys_info.pllPciDiv / 1000000);
+ if (mfdcr(strap) & PSR_PCI_ARBIT_EN)
+ printf("internal PCI arbiter enabled\n");
+ else
+ printf("external PCI arbiter enabled\n");
+#endif
+
+ if ((pvr | 0x00000001) == PVR_405GPR_RA) {
+ printf(" 16 kB I-Cache 16 kB D-Cache");
+ } else {
+ printf(" 16 kB I-Cache 8 kB D-Cache");
+ }
+
+
+#endif /* defined(CONFIG_405GP) || defined(CONFIG_405CR) */
+
+#ifdef CONFIG_IOP480
+ printf("PLX IOP480 (PVR=%08x)", pvr);
+ printf(" at %s MHz:", strmhz(buf, clock));
+ printf(" %u kB I-Cache", 4);
+ printf(" %u kB D-Cache", 2);
+#endif
+
+#if defined(CONFIG_440)
+ puts("IBM PowerPC 440 Rev. ");
+ switch(pvr)
+ {
+ case PVR_440GP_RB:
+ putc('B');
+ /* See errata 1.12: CHIP_4 */
+ if( ( mfdcr(cpc0_sys0) != mfdcr(cpc0_strp0) )
+ ||( mfdcr(cpc0_sys1) != mfdcr(cpc0_strp1) ) ){
+ puts("\n\t CPC0_SYSx DCRs corrupted. Resetting chip ...\n");
+ udelay( 1000 * 1000 ); /* Give time for serial buf to clear */
+ do_chip_reset( mfdcr(cpc0_strp0), mfdcr(cpc0_strp1) );
+ }
+ break;
+ case PVR_440GP_RC:
+ putc('C');
+ break;
+ default:
+ printf("UNKNOWN (PVR=%08x)", pvr);
+ break;
+ }
+#endif
+
+ printf("\n");
+
+ return 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+ /*
+ * Initiate system reset in debug control register DBCR
+ */
+ __asm__ __volatile__("lis 3, 0x3000" ::: "r3");
+#if defined(CONFIG_440)
+ __asm__ __volatile__("mtspr 0x134, 3");
+#else
+ __asm__ __volatile__("mtspr 0x3f2, 3");
+#endif
+ return 1;
+}
+
+#if defined(CONFIG_440)
+static
+int do_chip_reset( unsigned long sys0, unsigned long sys1 )
+{
+ /* Changes to cpc0_sys0 and cpc0_sys1 require chip
+ * reset.
+ */
+ mtdcr( cntrl0, mfdcr(cntrl0) | 0x80000000 ); /* Set SWE */
+ mtdcr( cpc0_sys0, sys0 );
+ mtdcr( cpc0_sys1, sys1 );
+ mtdcr( cntrl0, mfdcr(cntrl0) & ~0x80000000 ); /* Clr SWE */
+ mtspr( dbcr0, 0x20000000); /* Reset the chip */
+
+ return 1;
+}
+#endif
+
+
+/*
+ * Get timebase clock frequency
+ */
+unsigned long get_tbclk (void)
+{
+#if defined(CONFIG_440)
+
+ sys_info_t sys_info;
+
+ get_sys_info(&sys_info);
+ return (sys_info.freqProcessor);
+
+#elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_405)
+
+ PPC405_SYS_INFO sys_info;
+
+ get_sys_info(&sys_info);
+ return (sys_info.freqProcessor);
+
+#elif defined(CONFIG_IOP480)
+
+ return (66000000);
+
+#else
+
+# error get_tbclk() not implemented
+
+#endif
+
+}
+
+
+#if defined(CONFIG_WATCHDOG)
+void
+watchdog_reset(void)
+{
+ int re_enable = disable_interrupts();
+ reset_4xx_watchdog();
+ if (re_enable) enable_interrupts();
+}
+
+void
+reset_4xx_watchdog(void)
+{
+ /*
+ * Clear TSR(WIS) bit
+ */
+ mtspr(tsr, 0x40000000);
+}
+#endif /* CONFIG_WATCHDOG */
diff --git a/cpu/ppc4xx/i2c.c b/cpu/ppc4xx/i2c.c
new file mode 100644
index 0000000..68af057
--- /dev/null
+++ b/cpu/ppc4xx/i2c.c
@@ -0,0 +1,417 @@
+/*****************************************************************************/
+/* I2C Bus interface initialisation and I2C Commands */
+/* for PPC405GP */
+/* Author : AS HARNOIS */
+/* Date : 13.Dec.00 */
+/*****************************************************************************/
+
+#include <common.h>
+#include <ppc4xx.h>
+#if defined(CONFIG_440)
+# include <440_i2c.h>
+#else
+# include <405gp_i2c.h>
+#endif
+#include <i2c.h>
+
+#ifdef CONFIG_HARD_I2C
+
+#define IIC_OK 0
+#define IIC_NOK 1
+#define IIC_NOK_LA 2 /* Lost arbitration */
+#define IIC_NOK_ICT 3 /* Incomplete transfer */
+#define IIC_NOK_XFRA 4 /* Transfer aborted */
+#define IIC_NOK_DATA 5 /* No data in buffer */
+#define IIC_NOK_TOUT 6 /* Transfer timeout */
+
+#define IIC_TIMEOUT 1 /* 1 seconde */
+
+
+static void _i2c_bus_reset (void)
+{
+ int i, status;
+
+ /* Reset status register */
+ /* write 1 in SCMP and IRQA to clear these fields */
+ out8 (IIC_STS, 0x0A);
+
+ /* write 1 in IRQP IRQD LA ICT XFRA to clear these fields */
+ out8 (IIC_EXTSTS, 0x8F);
+ __asm__ volatile ("eieio");
+
+ /*
+ * Get current state, reset bus
+ * only if no transfers are pending.
+ */
+ i = 10;
+ do {
+ /* Get status */
+ status = in8 (IIC_STS);
+ udelay (500); /* 500us */
+ i--;
+ } while ((status & IIC_STS_PT) && (i > 0));
+ /* Soft reset controller */
+ status = in8 (IIC_XTCNTLSS);
+ out8 (IIC_XTCNTLSS, (status | IIC_XTCNTLSS_SRST));
+ __asm__ volatile ("eieio");
+
+ /* make sure where in initial state, data hi, clock hi */
+ out8 (IIC_DIRECTCNTL, 0xC);
+ for (i = 0; i < 10; i++) {
+ if ((in8 (IIC_DIRECTCNTL) & 0x3) != 0x3) {
+ /* clock until we get to known state */
+ out8 (IIC_DIRECTCNTL, 0x8); /* clock lo */
+ udelay (100); /* 100us */
+ out8 (IIC_DIRECTCNTL, 0xC); /* clock hi */
+ udelay (100); /* 100us */
+ } else {
+ break;
+ }
+ }
+ /* send start condition */
+ out8 (IIC_DIRECTCNTL, 0x4);
+ udelay (1000); /* 1ms */
+ /* send stop condition */
+ out8 (IIC_DIRECTCNTL, 0xC);
+ udelay (1000); /* 1ms */
+ /* Unreset controller */
+ out8 (IIC_XTCNTLSS, (status & ~IIC_XTCNTLSS_SRST));
+ udelay (1000); /* 1ms */
+}
+
+void i2c_init (int speed, int slaveadd)
+{
+ sys_info_t sysInfo;
+ unsigned long freqOPB;
+ int val, divisor;
+
+ /* Handle possible failed I2C state */
+ _i2c_bus_reset ();
+
+ /* clear lo master address */
+ out8 (IIC_LMADR, 0);
+
+ /* clear hi master address */
+ out8 (IIC_HMADR, 0);
+
+ /* clear lo slave address */
+ out8 (IIC_LSADR, 0);
+
+ /* clear hi slave address */
+ out8 (IIC_HSADR, 0);
+
+ /* Clock divide Register */
+ /* get OPB frequency */
+ get_sys_info (&sysInfo);
+ freqOPB = sysInfo.freqPLB / sysInfo.pllOpbDiv;
+ /* set divisor according to freqOPB */
+ divisor = (freqOPB - 1) / 10000000;
+ if (divisor == 0)
+ divisor = 1;
+ out8 (IIC_CLKDIV, divisor);
+
+ /* no interrupts */
+ out8 (IIC_INTRMSK, 0);
+
+ /* clear transfer count */
+ out8 (IIC_XFRCNT, 0);
+
+ /* clear extended control & stat */
+ /* write 1 in SRC SRS SWC SWS to clear these fields */
+ out8 (IIC_XTCNTLSS, 0xF0);
+
+ /* Mode Control Register
+ Flush Slave/Master data buffer */
+ out8 (IIC_MDCNTL, IIC_MDCNTL_FSDB | IIC_MDCNTL_FMDB);
+ __asm__ volatile ("eieio");
+
+
+ val = in8(IIC_MDCNTL);
+ __asm__ volatile ("eieio");
+
+ /* Ignore General Call, slave transfers are ignored,
+ disable interrupts, exit unknown bus state, enable hold
+ SCL
+ 100kHz normaly or FastMode for 400kHz and above
+ */
+
+ val |= IIC_MDCNTL_EUBS|IIC_MDCNTL_HSCL;
+ if( speed >= 400000 ){
+ val |= IIC_MDCNTL_FSM;
+ }
+ out8 (IIC_MDCNTL, val);
+
+ /* clear control reg */
+ out8 (IIC_CNTL, 0x00);
+ __asm__ volatile ("eieio");
+
+}
+
+/*
+ This code tries to use the features of the 405GP i2c
+ controller. It will transfer up to 4 bytes in one pass
+ on the loop. It only does out8(lbz) to the buffer when it
+ is possible to do out16(lhz) transfers.
+
+ cmd_type is 0 for write 1 for read.
+
+ addr_len can take any value from 0-255, it is only limited
+ by the char, we could make it larger if needed. If it is
+ 0 we skip the address write cycle.
+
+ Typical case is a Write of an addr followd by a Read. The
+ IBM FAQ does not cover this. On the last byte of the write
+ we don't set the creg CHT bit, and on the first bytes of the
+ read we set the RPST bit.
+
+ It does not support address only transfers, there must be
+ a data part. If you want to write the address yourself, put
+ it in the data pointer.
+
+ It does not support transfer to/from address 0.
+
+ It does not check XFRCNT.
+*/
+static
+int i2c_transfer(unsigned char cmd_type,
+ unsigned char chip,
+ unsigned char addr[],
+ unsigned char addr_len,
+ unsigned char data[],
+ unsigned short data_len )
+{
+ unsigned char* ptr;
+ int reading;
+ int tran,cnt;
+ int result;
+ int status;
+ int i;
+ uchar creg;
+
+ if( data == 0 || data_len == 0 ){
+ /*Don't support data transfer of no length or to address 0*/
+ printf( "i2c_transfer: bad call\n" );
+ return IIC_NOK;
+ }
+ if( addr && addr_len ){
+ ptr = addr;
+ cnt = addr_len;
+ reading = 0;
+ }else{
+ ptr = data;
+ cnt = data_len;
+ reading = cmd_type;
+ }
+
+ /*Clear Stop Complete Bit*/
+ out8(IIC_STS,IIC_STS_SCMP);
+ /* Check init */
+ i=10;
+ do {
+ /* Get status */
+ status = in8(IIC_STS);
+ __asm__ volatile("eieio");
+ i--;
+ } while ((status & IIC_STS_PT) && (i>0));
+
+ if (status & IIC_STS_PT) {
+ result = IIC_NOK_TOUT;
+ return(result);
+ }
+ /*flush the Master/Slave Databuffers*/
+ out8(IIC_MDCNTL, ((in8(IIC_MDCNTL))|IIC_MDCNTL_FMDB|IIC_MDCNTL_FSDB));
+ /*need to wait 4 OPB clocks? code below should take that long*/
+
+ /* 7-bit adressing */
+ out8(IIC_HMADR,0);
+ out8(IIC_LMADR, chip);
+ __asm__ volatile("eieio");
+
+ tran = 0;
+ result = IIC_OK;
+ creg = 0;
+
+ while ( tran != cnt && (result == IIC_OK)) {
+ int bc,j;
+
+ /* Control register =
+ Normal transfer, 7-bits adressing, Transfer up to bc bytes, Normal start,
+ Transfer is a sequence of transfers
+ */
+ creg |= IIC_CNTL_PT;
+
+ bc = (cnt - tran) > 4 ? 4 :
+ cnt - tran;
+ creg |= (bc-1)<<4;
+ /* if the real cmd type is write continue trans*/
+ if ( (!cmd_type && (ptr == addr)) || ((tran+bc) != cnt) )
+ creg |= IIC_CNTL_CHT;
+
+ if (reading)
+ creg |= IIC_CNTL_READ;
+ else {
+ for(j=0; j<bc; j++) {
+ /* Set buffer */
+ out8(IIC_MDBUF,ptr[tran+j]);
+ __asm__ volatile("eieio");
+ }
+ }
+ out8(IIC_CNTL, creg );
+ __asm__ volatile("eieio");
+
+ /* Transfer is in progress
+ we have to wait for upto 5 bytes of data
+ 1 byte chip address+r/w bit then bc bytes
+ of data.
+ udelay(10) is 1 bit time at 100khz
+ Doubled for slop. 20 is too small.
+ */
+ i=2*5*8;
+ do {
+ /* Get status */
+ status = in8(IIC_STS);
+ __asm__ volatile("eieio");
+ udelay (10);
+ i--;
+ } while ((status & IIC_STS_PT) && !(status & IIC_STS_ERR)
+ && (i>0));
+
+ if (status & IIC_STS_ERR) {
+ result = IIC_NOK;
+ status = in8 (IIC_EXTSTS);
+ /* Lost arbitration? */
+ if (status & IIC_EXTSTS_LA)
+ result = IIC_NOK_LA;
+ /* Incomplete transfer? */
+ if (status & IIC_EXTSTS_ICT)
+ result = IIC_NOK_ICT;
+ /* Transfer aborted? */
+ if (status & IIC_EXTSTS_XFRA)
+ result = IIC_NOK_XFRA;
+ } else if ( status & IIC_STS_PT) {
+ result = IIC_NOK_TOUT;
+ }
+ /* Command is reading => get buffer */
+ if ((reading) && (result == IIC_OK)) {
+ /* Are there data in buffer */
+ if (status & IIC_STS_MDBS) {
+ /*
+ even if we have data we have to wait 4OPB clocks
+ for it to hit the front of the FIFO, after that
+ we can just read. We should check XFCNT here and
+ if the FIFO is full there is no need to wait.
+ */
+ udelay (1);
+ for(j=0;j<bc;j++) {
+ ptr[tran+j] = in8(IIC_MDBUF);
+ __asm__ volatile("eieio");
+ }
+ } else
+ result = IIC_NOK_DATA;
+ }
+ creg = 0;
+ tran+=bc;
+ if( ptr == addr && tran == cnt ) {
+ ptr = data;
+ cnt = data_len;
+ tran = 0;
+ reading = cmd_type;
+ if( reading )
+ creg = IIC_CNTL_RPST;
+ }
+ }
+ return (result);
+}
+
+int i2c_probe (uchar chip)
+{
+ uchar buf[1];
+
+ buf[0] = 0;
+
+ /*
+ * What is needed is to send the chip address and verify that the
+ * address was <ACK>ed (i.e. there was a chip at that address which
+ * drove the data line low).
+ */
+ return(i2c_transfer (1, chip << 1, 0,0, buf, 1) != 0);
+}
+
+
+
+int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ uchar xaddr[4];
+ int ret;
+
+ if ( alen > 4 ) {
+ printf ("I2C read: addr len %d not supported\n", alen);
+ return 1;
+ }
+
+ if ( alen > 0 ) {
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+ }
+
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+ * address and the extra bits end up in the "chip address"
+ * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+ * four 256 byte chips.
+ *
+ * Note that we consider the length of the address field to
+ * still be one byte because the extra address bits are
+ * hidden in the chip address.
+ */
+ if( alen > 0 )
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+ if( (ret = i2c_transfer( 1, chip<<1, &xaddr[4-alen], alen, buffer, len )) != 0) {
+ printf( "I2c read: failed %d\n", ret);
+ return 1;
+ }
+ return 0;
+}
+
+int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ uchar xaddr[4];
+
+ if ( alen > 4 ) {
+ printf ("I2C write: addr len %d not supported\n", alen);
+ return 1;
+
+ }
+ if ( alen > 0 ) {
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+ }
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+ * address and the extra bits end up in the "chip address"
+ * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+ * four 256 byte chips.
+ *
+ * Note that we consider the length of the address field to
+ * still be one byte because the extra address bits are
+ * hidden in the chip address.
+ */
+ if( alen > 0 )
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+
+ return (i2c_transfer( 0, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0);
+}
+
+#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c
new file mode 100644
index 0000000..d64bf96
--- /dev/null
+++ b/cpu/ppc4xx/sdram.c
@@ -0,0 +1,191 @@
+/*
+ * (C) Copyright 2002
+ * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+#include <pci.h>
+
+
+#ifdef CONFIG_SDRAM_BANK0
+
+
+#define MAGIC0 0x00000000
+#define MAGIC1 0x11111111
+#define MAGIC2 0x22222222
+#define MAGIC3 0x33333333
+#define MAGIC4 0x44444444
+
+#define ADDR_ZERO 0x00000000
+#define ADDR_400 0x00000400
+#define ADDR_08MB 0x00800000
+#define ADDR_16MB 0x01000000
+#define ADDR_32MB 0x02000000
+#define ADDR_64MB 0x04000000
+
+#define mtsdram0(reg, data) mtdcr(memcfga,reg);mtdcr(memcfgd,data)
+
+
+/*-----------------------------------------------------------------------
+ */
+void sdram_init(void)
+{
+ ulong speed;
+ ulong sdtr1;
+ ulong rtr;
+
+ /*
+ * Determine SDRAM speed
+ */
+ speed = get_bus_freq(0); /* parameter not used on ppc4xx */
+
+ /*
+ * Support for 100MHz and 133MHz SDRAM
+ */
+ if (speed > 100000000) {
+ /*
+ * 133 MHz SDRAM
+ */
+ sdtr1 = 0x01074015;
+ rtr = 0x07f00000;
+ } else {
+ /*
+ * default: 100 MHz SDRAM
+ */
+ sdtr1 = 0x0086400d;
+ rtr = 0x05f00000;
+ }
+
+ /*
+ * Set MB0CF for bank 0. (0-64MB) Address Mode 3 since 13x9(4)
+ */
+ mtsdram0(mem_mb0cf, 0x00084001);
+
+ mtsdram0(mem_sdtr1, sdtr1);
+ mtsdram0(mem_rtr, rtr);
+
+ /*
+ * Wait for 200us
+ */
+ udelay(200);
+
+ /*
+ * Set memory controller options reg, MCOPT1.
+ * Set DC_EN to '1' and BRD_PRF to '01' for 16 byte PLB Burst
+ * read/prefetch.
+ */
+ mtsdram0(mem_mcopt1, 0x80800000);
+
+ /*
+ * Wait for 10ms
+ */
+ udelay(10000);
+
+ /*
+ * Test if 64 MByte are equipped (mirror test)
+ */
+ *(volatile ulong *)ADDR_ZERO = MAGIC0;
+ *(volatile ulong *)ADDR_08MB = MAGIC1;
+ *(volatile ulong *)ADDR_16MB = MAGIC2;
+ *(volatile ulong *)ADDR_32MB = MAGIC3;
+
+ if ((*(volatile ulong *)ADDR_ZERO == MAGIC0) &&
+ (*(volatile ulong *)ADDR_08MB == MAGIC1) &&
+ (*(volatile ulong *)ADDR_16MB == MAGIC2)) {
+ /*
+ * OK, 64MB detected -> all done
+ */
+ return;
+ }
+
+ /*
+ * Now test for 32 MByte...
+ */
+
+ /*
+ * Disable memory controller.
+ */
+ mtsdram0(mem_mcopt1, 0x00000000);
+
+ /*
+ * Set MB0CF for bank 0. (0-32MB) Address Mode 2 since 12x9(4)
+ */
+ mtsdram0(mem_mb0cf, 0x00062001);
+
+ /*
+ * Set memory controller options reg, MCOPT1.
+ * Set DC_EN to '1' and BRD_PRF to '01' for 16 byte PLB Burst
+ * read/prefetch.
+ */
+ mtsdram0(mem_mcopt1, 0x80800000);
+
+ /*
+ * Wait for 10ms
+ */
+ udelay(10000);
+
+ /*
+ * Test if 32 MByte are equipped (mirror test)
+ */
+ *(volatile ulong *)ADDR_ZERO = MAGIC0;
+ *(volatile ulong *)ADDR_400 = MAGIC1;
+ *(volatile ulong *)ADDR_08MB = MAGIC2;
+ *(volatile ulong *)ADDR_16MB = MAGIC3;
+
+ if ((*(volatile ulong *)ADDR_ZERO == MAGIC0) &&
+ (*(volatile ulong *)ADDR_400 == MAGIC1) &&
+ (*(volatile ulong *)ADDR_08MB == MAGIC2)) {
+ /*
+ * OK, 32MB detected -> all done
+ */
+ return;
+ }
+
+ /*
+ * Setup for 16 MByte...
+ */
+
+ /*
+ * Disable memory controller.
+ */
+ mtsdram0(mem_mcopt1, 0x00000000);
+
+ /*
+ * Set MB0CF for bank 0. (0-16MB) Address Mode 4 since 12x8(4)
+ */
+ mtsdram0(mem_mb0cf, 0x00046001);
+
+ /*
+ * Set memory controller options reg, MCOPT1.
+ * Set DC_EN to '1' and BRD_PRF to '01' for 16 byte PLB Burst
+ * read/prefetch.
+ */
+ mtsdram0(mem_mcopt1, 0x80800000);
+
+ /*
+ * Wait for 10ms
+ */
+ udelay(10000);
+}
+
+#endif /* CONFIG_SDRAM_BANK0 */
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
new file mode 100644
index 0000000..4541529
--- /dev/null
+++ b/cpu/ppc4xx/speed.c
@@ -0,0 +1,308 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <ppc_asm.tmpl>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+
+/* ------------------------------------------------------------------------- */
+
+#define ONE_BILLION 1000000000
+
+
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR)
+
+void get_sys_info (PPC405_SYS_INFO * sysInfo)
+{
+ unsigned long pllmr;
+ unsigned long sysClkPeriodPs = ONE_BILLION / (CONFIG_SYS_CLK_FREQ / 1000);
+ uint pvr = get_pvr();
+ unsigned long psr;
+ unsigned long m;
+
+ /*
+ * Read PLL Mode register
+ */
+ pllmr = mfdcr (pllmd);
+
+ /*
+ * Read Pin Strapping register
+ */
+ psr = mfdcr (strap);
+
+ /*
+ * Determine FWD_DIV.
+ */
+ sysInfo->pllFwdDiv = 8 - ((pllmr & PLLMR_FWD_DIV_MASK) >> 29);
+
+ /*
+ * Determine FBK_DIV.
+ */
+ sysInfo->pllFbkDiv = ((pllmr & PLLMR_FB_DIV_MASK) >> 25);
+ if (sysInfo->pllFbkDiv == 0) {
+ sysInfo->pllFbkDiv = 16;
+ }
+
+ /*
+ * Determine PLB_DIV.
+ */
+ sysInfo->pllPlbDiv = ((pllmr & PLLMR_CPU_TO_PLB_MASK) >> 17) + 1;
+
+ /*
+ * Determine PCI_DIV.
+ */
+ sysInfo->pllPciDiv = ((pllmr & PLLMR_PCI_TO_PLB_MASK) >> 13) + 1;
+
+ /*
+ * Determine EXTBUS_DIV.
+ */
+ sysInfo->pllExtBusDiv = ((pllmr & PLLMR_EXB_TO_PLB_MASK) >> 11) + 2;
+
+ /*
+ * Determine OPB_DIV.
+ */
+ sysInfo->pllOpbDiv = ((pllmr & PLLMR_OPB_TO_PLB_MASK) >> 15) + 1;
+
+ /*
+ * Check if PPC405GPr used (mask minor revision field)
+ */
+ if ((pvr & 0xfffffff0) == (PVR_405GPR_RA & 0xfffffff0)) {
+ /*
+ * Determine FWD_DIV B (only PPC405GPr with new mode strapping).
+ */
+ sysInfo->pllFwdDivB = 8 - (pllmr & PLLMR_FWDB_DIV_MASK);
+
+ /*
+ * Determine factor m depending on PLL feedback clock source
+ */
+ if (!(psr & PSR_PCI_ASYNC_EN)) {
+ if (psr & PSR_NEW_MODE_EN) {
+ /*
+ * sync pci clock used as feedback (new mode)
+ */
+ m = 1 * sysInfo->pllFwdDivB * 2 * sysInfo->pllPciDiv;
+ } else {
+ /*
+ * sync pci clock used as feedback (legacy mode)
+ */
+ m = 1 * sysInfo->pllFwdDivB * sysInfo->pllPlbDiv * sysInfo->pllPciDiv;
+ }
+ } else if (psr & PSR_NEW_MODE_EN) {
+ if (psr & PSR_PERCLK_SYNC_MODE_EN) {
+ /*
+ * PerClk used as feedback (new mode)
+ */
+ m = 1 * sysInfo->pllFwdDivB * 2 * sysInfo->pllExtBusDiv;
+ } else {
+ /*
+ * CPU clock used as feedback (new mode)
+ */
+ m = sysInfo->pllFbkDiv * sysInfo->pllFwdDiv;
+ }
+ } else if (sysInfo->pllExtBusDiv == sysInfo->pllFbkDiv) {
+ /*
+ * PerClk used as feedback (legacy mode)
+ */
+ m = 1 * sysInfo->pllFwdDivB * sysInfo->pllPlbDiv * sysInfo->pllExtBusDiv;
+ } else {
+ /*
+ * PLB clock used as feedback (legacy mode)
+ */
+ m = sysInfo->pllFbkDiv * sysInfo->pllFwdDivB * sysInfo->pllPlbDiv;
+ }
+
+ sysInfo->freqVCOMhz = (1000000 * m) / sysClkPeriodPs;
+ sysInfo->freqProcessor = (sysInfo->freqVCOMhz * 1000000) / sysInfo->pllFwdDiv;
+ sysInfo->freqPLB = (sysInfo->freqVCOMhz * 1000000) /
+ (sysInfo->pllFwdDivB * sysInfo->pllPlbDiv);
+ } else {
+ /*
+ * Check pllFwdDiv to see if running in bypass mode where the CPU speed
+ * is equal to the 405GP SYS_CLK_FREQ. If not in bypass mode, check VCO
+ * to make sure it is within the proper range.
+ * spec: VCO = SYS_CLOCK x FBKDIV x PLBDIV x FWDDIV
+ * Note freqVCO is calculated in Mhz to avoid errors introduced by rounding.
+ */
+ if (sysInfo->pllFwdDiv == 1) {
+ sysInfo->freqProcessor = CONFIG_SYS_CLK_FREQ;
+ sysInfo->freqPLB = CONFIG_SYS_CLK_FREQ / sysInfo->pllPlbDiv;
+ } else {
+ sysInfo->freqVCOMhz = ( 1000000 *
+ sysInfo->pllFwdDiv *
+ sysInfo->pllFbkDiv *
+ sysInfo->pllPlbDiv
+ ) / sysClkPeriodPs;
+ if (sysInfo->freqVCOMhz >= VCO_MIN
+ && sysInfo->freqVCOMhz <= VCO_MAX) {
+ sysInfo->freqPLB = (ONE_BILLION /
+ ((sysClkPeriodPs * 10) /
+ sysInfo->pllFbkDiv)) * 10000;
+ sysInfo->freqProcessor = sysInfo->freqPLB * sysInfo->pllPlbDiv;
+ } else {
+ printf ("\nInvalid VCO frequency calculated : %ld MHz \a\n",
+ sysInfo->freqVCOMhz);
+ printf ("It must be between %d-%d MHz \a\n",
+ VCO_MIN, VCO_MAX);
+ printf ("PLL Mode reg : %8.8lx\a\n",
+ pllmr);
+ hang ();
+ }
+ }
+ }
+}
+
+
+/********************************************
+ * get_OPB_freq
+ * return OPB bus freq in Hz
+ *********************************************/
+ulong get_OPB_freq (void)
+{
+ ulong val = 0;
+
+ PPC405_SYS_INFO sys_info;
+
+ get_sys_info (&sys_info);
+ val = sys_info.freqPLB / sys_info.pllOpbDiv;
+
+ return val;
+}
+
+
+/********************************************
+ * get_PCI_freq
+ * return PCI bus freq in Hz
+ *********************************************/
+ulong get_PCI_freq (void)
+{
+ ulong val;
+ PPC405_SYS_INFO sys_info;
+
+ get_sys_info (&sys_info);
+ val = sys_info.freqPLB / sys_info.pllPciDiv;
+ return val;
+}
+
+
+#elif defined(CONFIG_440)
+void get_sys_info (sys_info_t * sysInfo)
+{
+ unsigned long strp0;
+ unsigned long temp;
+ unsigned long m;
+
+ /* Extract configured divisors */
+ strp0 = mfdcr( cpc0_strp0 );
+ sysInfo->pllFwdDivA = 8 - ((strp0 & PLLSYS0_FWD_DIV_A_MASK) >> 15);
+ sysInfo->pllFwdDivB = 8 - ((strp0 & PLLSYS0_FWD_DIV_B_MASK) >> 12);
+ temp = (strp0 & PLLSYS0_FB_DIV_MASK) >> 18;
+ sysInfo->pllFbkDiv = temp ? temp : 16;
+ sysInfo->pllOpbDiv = 1 + ((strp0 & PLLSYS0_OPB_DIV_MASK) >> 10);
+ sysInfo->pllExtBusDiv = 1 + ((strp0 & PLLSYS0_EPB_DIV_MASK) >> 8);
+
+ /* Calculate 'M' based on feedback source */
+ if( strp0 & PLLSYS0_EXTSL_MASK )
+ m = sysInfo->pllExtBusDiv * sysInfo->pllOpbDiv * sysInfo->pllFwdDivB;
+ else
+ m = sysInfo->pllFbkDiv * sysInfo->pllFwdDivA;
+
+ /* Now calculate the individual clocks */
+ sysInfo->freqVCOMhz = (m * CONFIG_SYS_CLK_FREQ) + (m>>1);
+ sysInfo->freqProcessor = sysInfo->freqVCOMhz/sysInfo->pllFwdDivA;
+ sysInfo->freqPLB = sysInfo->freqVCOMhz/sysInfo->pllFwdDivB;
+ if( get_pvr() == PVR_440GP_RB ) /* Rev B divs an extra 2 -- geez! */
+ sysInfo->freqPLB >>= 1;
+ sysInfo->freqOPB = sysInfo->freqPLB/sysInfo->pllOpbDiv;
+ sysInfo->freqEPB = sysInfo->freqOPB/sysInfo->pllExtBusDiv;
+
+}
+
+ulong get_OPB_freq (void)
+{
+
+ sys_info_t sys_info;
+ get_sys_info (&sys_info);
+ return sys_info.freqOPB;
+}
+
+#elif defined(CONFIG_405)
+
+void get_sys_info (sys_info_t * sysInfo) {
+
+ sysInfo->freqVCOMhz=3125000;
+ sysInfo->freqProcessor=12*1000*1000;
+ sysInfo->freqPLB=50*1000*1000;
+ sysInfo->freqPCI=66*1000*1000;
+
+}
+
+#endif
+
+int get_clocks (void)
+{
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) || defined(CONFIG_405)
+ DECLARE_GLOBAL_DATA_PTR;
+
+ sys_info_t sys_info;
+
+ get_sys_info (&sys_info);
+ gd->cpu_clk = sys_info.freqProcessor;
+ gd->bus_clk = sys_info.freqPLB;
+
+#endif /* defined(CONFIG_405GP) || defined(CONFIG_405CR) */
+
+#ifdef CONFIG_IOP480
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->cpu_clk = 66000000;
+ gd->bus_clk = 66000000;
+#endif
+ return (0);
+}
+
+
+/********************************************
+ * get_bus_freq
+ * return PLB bus freq in Hz
+ *********************************************/
+ulong get_bus_freq (ulong dummy)
+{
+ ulong val;
+
+#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_405) || defined(CONFIG_440)
+ sys_info_t sys_info;
+
+ get_sys_info (&sys_info);
+ val = sys_info.freqPLB;
+
+#elif defined(CONFIG_IOP480)
+
+ val = 66;
+
+#else
+# error get_bus_freq() not implemented
+#endif
+
+ return val;
+}
diff --git a/cpu/ppc4xx/vecnum.h b/cpu/ppc4xx/vecnum.h
new file mode 100644
index 0000000..d493a5d
--- /dev/null
+++ b/cpu/ppc4xx/vecnum.h
@@ -0,0 +1,100 @@
+/*
+* Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com>
+*
+* See file CREDITS for list of people who contributed to this
+* project.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+* MA 02111-1307 USA
+*/
+
+/*
+ * Interrupt vector number definitions to ease the
+ * 405 -- 440 porting pain ;-)
+ *
+ * NOTE: They're not all here yet ... update as needed.
+ *
+ */
+
+#ifndef _VECNUMS_H_
+#define _VECNUMS_H_
+
+#if defined(CONFIG_440)
+
+/* UIC 0 */
+#define VECNUM_U0 0 /* UART0 */
+#define VECNUM_U1 1 /* UART1 */
+#define VECNUM_IIC0 2 /* IIC0 */
+#define VECNUM_IIC1 3 /* IIC1 */
+#define VECNUM_PIM 4 /* PCI inbound message */
+#define VECNUM_PCRW 5 /* PCI command reg write */
+#define VECNUM_PPM 6 /* PCI power management */
+#define VECNUM_MSI0 7 /* PCI MSI level 0 */
+#define VECNUM_MSI1 8 /* PCI MSI level 0 */
+#define VECNUM_MSI2 9 /* PCI MSI level 0 */
+#define VECNUM_MTE 10 /* MAL TXEOB */
+#define VECNUM_MRE 11 /* MAL RXEOB */
+#define VECNUM_D0 12 /* DMA channel 0 */
+#define VECNUM_D1 13 /* DMA channel 1 */
+#define VECNUM_D2 14 /* DMA channel 2 */
+#define VECNUM_D3 15 /* DMA channel 3 */
+#define VECNUM_CT0 18 /* GPT compare timer 0 */
+#define VECNUM_CT1 19 /* GPT compare timer 1 */
+#define VECNUM_CT2 20 /* GPT compare timer 2 */
+#define VECNUM_CT3 21 /* GPT compare timer 3 */
+#define VECNUM_CT4 22 /* GPT compare timer 4 */
+#define VECNUM_EIR0 23 /* External interrupt 0 */
+#define VECNUM_EIR1 24 /* External interrupt 1 */
+#define VECNUM_EIR2 25 /* External interrupt 2 */
+#define VECNUM_EIR3 26 /* External interrupt 3 */
+#define VECNUM_EIR4 27 /* External interrupt 4 */
+#define VECNUM_EIR5 28 /* External interrupt 5 */
+#define VECNUM_EIR6 29 /* External interrupt 6 */
+#define VECNUM_UIC1NC 30 /* UIC1 non-critical interrupt */
+#define VECNUM_UIC1C 31 /* UIC1 critical interrupt */
+
+/* UIC 1 */
+#define VECNUM_MS (32 + 0 ) /* MAL SERR */
+#define VECNUM_TXDE (32 + 1 ) /* MAL TXDE */
+#define VECNUM_RXDE (32 + 2 ) /* MAL RXDE */
+#define VECNUM_ETH0 (32 + 28) /* Ethernet 0 interrupt status */
+#define VECNUM_EWU0 (32 + 29) /* Ethernet 0 wakeup */
+
+#else /* !defined(CONFIG_440) */
+
+#define VECNUM_U0 0 /* UART0 */
+#define VECNUM_U1 1 /* UART1 */
+#define VECNUM_D0 5 /* DMA channel 0 */
+#define VECNUM_D1 6 /* DMA channel 1 */
+#define VECNUM_D2 7 /* DMA channel 2 */
+#define VECNUM_D3 8 /* DMA channel 3 */
+#define VECNUM_EWU0 9 /* Ethernet wakeup */
+#define VECNUM_MS 10 /* MAL SERR */
+#define VECNUM_MTE 11 /* MAL TXEOB */
+#define VECNUM_MRE 12 /* MAL RXEOB */
+#define VECNUM_TXDE 13 /* MAL TXDE */
+#define VECNUM_RXDE 14 /* MAL RXDE */
+#define VECNUM_ETH0 15 /* Ethernet interrupt status */
+#define VECNUM_EIR0 25 /* External interrupt 0 */
+#define VECNUM_EIR1 26 /* External interrupt 1 */
+#define VECNUM_EIR2 27 /* External interrupt 2 */
+#define VECNUM_EIR3 28 /* External interrupt 3 */
+#define VECNUM_EIR4 29 /* External interrupt 4 */
+#define VECNUM_EIR5 30 /* External interrupt 5 */
+#define VECNUM_EIR6 31 /* External interrupt 6 */
+
+#endif /* defined(CONFIG_440) */
+
+#endif /* _VECNUMS_H_ */
diff --git a/cpu/sa1100/Makefile b/cpu/sa1100/Makefile
new file mode 100644
index 0000000..8c950da
--- /dev/null
+++ b/cpu/sa1100/Makefile
@@ -0,0 +1,43 @@
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(CPU).a
+
+START = start.o
+OBJS = serial.o interrupts.o cpu.o
+
+all: .depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/xscale/serial.c b/cpu/xscale/serial.c
new file mode 100644
index 0000000..35302a7
--- /dev/null
+++ b/cpu/xscale/serial.c
@@ -0,0 +1,143 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <asm/arch/pxa-regs.h>
+
+void serial_setbrg (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ unsigned int quot = 0;
+
+ if (gd->baudrate == 1200)
+ quot = 192;
+ else if (gd->baudrate == 9600)
+ quot = 96;
+ else if (gd->baudrate == 19200)
+ quot = 48;
+ else if (gd->baudrate == 38400)
+ quot = 24;
+ else if (gd->baudrate == 57600)
+ quot = 16;
+ else if (gd->baudrate == 115200)
+ quot = 8;
+ else
+ hang ();
+
+#ifdef CONFIG_FFUART
+
+ CKEN |= CKEN6_FFUART;
+
+ FFIER = 0; /* Disable for now */
+ FFFCR = 0; /* No fifos enabled */
+
+ /* set baud rate */
+ FFLCR = LCR_WLS0 | LCR_WLS1 | LCR_DLAB;
+ FFDLL = quot & 0xff;
+ FFDLH = quot >> 8;
+ FFLCR = LCR_WLS0 | LCR_WLS1;
+
+ FFIER = IER_UUE; /* Enable FFUART */
+
+#elif CONFIG_STUART
+#error "Bad: not implemented yet!"
+#else
+#error "Bad: you didn't configured serial ..."
+#endif
+}
+
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init (void)
+{
+ serial_setbrg ();
+
+ return (0);
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+#ifdef CONFIG_FFUART
+ /* wait for room in the tx FIFO on FFUART */
+ while ((FFLSR & LSR_TEMT) == 0);
+
+ FFTHR = c;
+#elif CONFIG_STUART
+#endif
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_tstc (void)
+{
+#ifdef CONFIG_FFUART
+ return FFLSR & LSR_DR;
+#elif CONFIG_STUART
+#endif
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_getc (void)
+{
+#ifdef CONFIG_FFUART
+ while (!(FFLSR & LSR_DR));
+
+ return (char) FFRBR & 0xff;
+#elif CONFIG_STUART
+#endif
+}
+
+void
+serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
diff --git a/cpu/xscale/start.S b/cpu/xscale/start.S
new file mode 100644
index 0000000..f1049a8
--- /dev/null
+++ b/cpu/xscale/start.S
@@ -0,0 +1,412 @@
+/*
+ * armboot - Startup Code for XScale
+ *
+ * Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (C) 2000 Wolfgang Denk <wd@denx.de>
+ * Copyright (c) 2001 Alex Züpke <azu@sysgo.de>
+ * Copyright (c) 2002 Kyle Harris <kharris@nexus-tech.net>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+
+#include <config.h>
+#include <version.h>
+
+.globl _start
+_start: b reset
+ ldr pc, _undefined_instruction
+ ldr pc, _software_interrupt
+ ldr pc, _prefetch_abort
+ ldr pc, _data_abort
+ ldr pc, _not_used
+ ldr pc, _irq
+ ldr pc, _fiq
+
+_undefined_instruction: .word undefined_instruction
+_software_interrupt: .word software_interrupt
+_prefetch_abort: .word prefetch_abort
+_data_abort: .word data_abort
+_not_used: .word not_used
+_irq: .word irq
+_fiq: .word fiq
+
+ .balignl 16,0xdeadbeef
+
+
+/*
+ * Startup Code (reset vector)
+ *
+ * do important init only if we don't start from memory!
+ * - relocate armboot to ram
+ * - setup stack
+ * - jump to second stage
+ */
+
+/*
+ * CFG_MEM_END is in the board dependent config-file (configs/config_BOARD.h)
+ */
+_TEXT_BASE:
+ .word TEXT_BASE
+
+.globl _armboot_start
+_armboot_start:
+ .word _start
+
+/*
+ * Note: _armboot_end_data and _armboot_end are defined
+ * by the (board-dependent) linker script.
+ * _armboot_end_data is the first usable FLASH address after armboot
+ */
+.globl _armboot_end_data
+_armboot_end_data:
+ .word armboot_end_data
+.globl _armboot_end
+_armboot_end:
+ .word armboot_end
+
+/*
+ * _armboot_real_end is the first usable RAM address behind armboot
+ * and the various stacks
+ */
+.globl _armboot_real_end
+_armboot_real_end:
+ .word 0x0badc0de
+
+/*
+ * We relocate uboot to this address (end of RAM - 128 KiB)
+ */
+.globl _uboot_reloc
+_uboot_reloc:
+ .word CFG_DRAM_BASE + CFG_DRAM_SIZE - CFG_MONITOR_LEN
+
+#ifdef CONFIG_USE_IRQ
+/* IRQ stack memory (calculated at run-time) */
+.globl IRQ_STACK_START
+IRQ_STACK_START:
+ .word 0x0badc0de
+
+/* IRQ stack memory (calculated at run-time) */
+.globl FIQ_STACK_START
+FIQ_STACK_START:
+ .word 0x0badc0de
+#endif
+
+
+/****************************************************************************/
+/* */
+/* the actual reset code */
+/* */
+/****************************************************************************/
+
+reset:
+ mrs r0,cpsr /* set the cpu to SVC32 mode */
+ bic r0,r0,#0x1f /* (superviser mode, M=10011) */
+ orr r0,r0,#0x13
+ msr cpsr,r0
+
+ bl cpu_init_crit /* we do sys-critical inits */
+
+relocate: /* relocate U-Boot to RAM */
+ adr r0, _start /* r0 <- current position of code */
+ ldr r2, _armboot_start
+ ldr r3, _armboot_end
+ sub r2, r3, r2 /* r2 <- size of armboot */
+/* ldr r1, _uboot_reloc / * r1 <- destination address */
+ ldr r1, _TEXT_BASE
+ add r2, r0, r2 /* r2 <- source end address */
+
+copy_loop:
+ ldmia r0!, {r3-r10} /* copy from source address [r0] */
+ stmia r1!, {r3-r10} /* copy to target address [r1] */
+ cmp r0, r2 /* until source end addreee [r2] */
+ ble copy_loop
+
+ /* Set up the stack */
+ ldr r0, _uboot_reloc /* upper 128 KiB: relocated uboot */
+ sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
+ /* FIXME: bdinfo should be here */
+ sub sp, r0, #12 /* leave 3 words for abort-stack */
+
+ ldr pc, _start_armboot
+
+_start_armboot: .word start_armboot
+
+
+/****************************************************************************/
+/* */
+/* CPU_init_critical registers */
+/* */
+/* - setup important registers */
+/* - setup memory timing */
+/* */
+/****************************************************************************/
+
+ /* Interrupt-Controller base address */
+IC_BASE: .word 0x40d00000
+#define ICMR 0x04
+
+/* Reset-Controller */
+RST_BASE: .word 0x40f00030
+#define RCSR 0x00
+
+
+ /* Clock Manager Registers */
+CC_BASE: .word 0x41300000
+#define CCCR 0x00
+cpuspeed: .word CFG_CPUSPEED
+
+ /* RS: ??? */
+ .macro CPWAIT
+ mrc p15,0,r0,c2,c0,0
+ mov r0,r0
+ sub pc,pc,#4
+ .endm
+
+
+cpu_init_crit:
+
+ /* mask all IRQs */
+ ldr r0, IC_BASE
+ mov r1, #0x00
+ str r1, [r0, #ICMR]
+
+ /* set clock speed */
+ ldr r0, CC_BASE
+ ldr r1, cpuspeed
+ str r1, [r0, #CCCR]
+
+ /*
+ * before relocating, we have to setup RAM timing
+ * because memory timing is board-dependend, you will
+ * find a memsetup.S in your board directory.
+ */
+ mov ip, lr
+ bl memsetup
+ mov lr, ip
+
+ /* Memory interfaces are working. Disable MMU and enable I-cache. */
+
+ ldr r0, =0x2001 /* enable access to all coproc. */
+ mcr p15, 0, r0, c15, c1, 0
+ CPWAIT
+
+ mcr p15, 0, r0, c7, c10, 4 /* drain the write & fill buffers */
+ CPWAIT
+
+ mcr p15, 0, r0, c7, c7, 0 /* flush Icache, Dcache and BTB */
+ CPWAIT
+
+ mcr p15, 0, r0, c8, c7, 0 /* flush instuction and data TLBs */
+ CPWAIT
+
+ /* Enable the Icache */
+/*
+ mrc p15, 0, r0, c1, c0, 0
+ orr r0, r0, #0x1800
+ mcr p15, 0, r0, c1, c0, 0
+ CPWAIT
+*/
+ mov pc, lr
+
+
+/****************************************************************************/
+/* */
+/* Interrupt handling */
+/* */
+/****************************************************************************/
+
+/* IRQ stack frame */
+
+#define S_FRAME_SIZE 72
+
+#define S_OLD_R0 68
+#define S_PSR 64
+#define S_PC 60
+#define S_LR 56
+#define S_SP 52
+
+#define S_IP 48
+#define S_FP 44
+#define S_R10 40
+#define S_R9 36
+#define S_R8 32
+#define S_R7 28
+#define S_R6 24
+#define S_R5 20
+#define S_R4 16
+#define S_R3 12
+#define S_R2 8
+#define S_R1 4
+#define S_R0 0
+
+#define MODE_SVC 0x13
+
+ /* use bad_save_user_regs for abort/prefetch/undef/swi ... */
+
+ .macro bad_save_user_regs
+ sub sp, sp, #S_FRAME_SIZE
+ stmia sp, {r0 - r12} /* Calling r0-r12 */
+ add r8, sp, #S_PC
+
+ ldr r2, _armboot_end
+ add r2, r2, #CONFIG_STACKSIZE
+ sub r2, r2, #8
+ ldmia r2, {r2 - r4} /* get pc, cpsr, old_r0 */
+ add r0, sp, #S_FRAME_SIZE /* restore sp_SVC */
+
+ add r5, sp, #S_SP
+ mov r1, lr
+ stmia r5, {r0 - r4} /* save sp_SVC, lr_SVC, pc, cpsr, old_r */
+ mov r0, sp
+ .endm
+
+
+ /* use irq_save_user_regs / irq_restore_user_regs for */
+ /* IRQ/FIQ handling */
+
+ .macro irq_save_user_regs
+ sub sp, sp, #S_FRAME_SIZE
+ stmia sp, {r0 - r12} /* Calling r0-r12 */
+ add r8, sp, #S_PC
+ stmdb r8, {sp, lr}^ /* Calling SP, LR */
+ str lr, [r8, #0] /* Save calling PC */
+ mrs r6, spsr
+ str r6, [r8, #4] /* Save CPSR */
+ str r0, [r8, #8] /* Save OLD_R0 */
+ mov r0, sp
+ .endm
+
+ .macro irq_restore_user_regs
+ ldmia sp, {r0 - lr}^ @ Calling r0 - lr
+ mov r0, r0
+ ldr lr, [sp, #S_PC] @ Get PC
+ add sp, sp, #S_FRAME_SIZE
+ subs pc, lr, #4 @ return & move spsr_svc into cpsr
+ .endm
+
+ .macro get_bad_stack
+ ldr r13, _armboot_end @ setup our mode stack
+ add r13, r13, #CONFIG_STACKSIZE @ resides at top of normal stack
+ sub r13, r13, #8
+
+ str lr, [r13] @ save caller lr / spsr
+ mrs lr, spsr
+ str lr, [r13, #4]
+
+ mov r13, #MODE_SVC @ prepare SVC-Mode
+ msr spsr_c, r13
+ mov lr, pc
+ movs pc, lr
+ .endm
+
+ .macro get_irq_stack @ setup IRQ stack
+ ldr sp, IRQ_STACK_START
+ .endm
+
+ .macro get_fiq_stack @ setup FIQ stack
+ ldr sp, FIQ_STACK_START
+ .endm
+
+
+/****************************************************************************/
+/* */
+/* exception handlers */
+/* */
+/****************************************************************************/
+
+ .align 5
+undefined_instruction:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_undefined_instruction
+
+ .align 5
+software_interrupt:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_software_interrupt
+
+ .align 5
+prefetch_abort:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_prefetch_abort
+
+ .align 5
+data_abort:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_data_abort
+
+ .align 5
+not_used:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_not_used
+
+#ifdef CONFIG_USE_IRQ
+
+ .align 5
+irq:
+ get_irq_stack
+ irq_save_user_regs
+ bl do_irq
+ irq_restore_user_regs
+
+ .align 5
+fiq:
+ get_fiq_stack
+ irq_save_user_regs /* someone ought to write a more */
+ bl do_fiq /* effiction fiq_save_user_regs */
+ irq_restore_user_regs
+
+#else
+
+ .align 5
+irq:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_irq
+
+ .align 5
+fiq:
+ get_bad_stack
+ bad_save_user_regs
+ bl do_fiq
+
+#endif
+
+/*
+ * FIXME How do we reset??? Watchdog timeout??
+ */
+ .align 5
+.globl reset_cpu
+reset_cpu:
+ /*
+ ldr r0, RST_BASE
+ mov r1, #0x0 @ set bit 3-0 ...
+ str r1, [r0, #RCSR] @ ... to clear in RCSR
+ mov r1, #0x1
+ str r1, [r0, #RCSR] @ and perform reset
+ */
+ b reset_cpu @ silly, but repeat endlessly
+
generated by cgit v1.1 at 2024-11-02 22:37:04 +0000