Move ocl (at91sam7x flash loader) sources to contrib

Change-Id: Ib5c3c505a067d0e285a7b074cb6fddebfa6dda1e
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/1904
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: Spencer Oliver <spen@spen-soft.co.uk>

12 files changed, 1091 insertions, 0 deletions

diff --git a/contrib/loaders/flash/at91sam7x/at91sam7x_ocl_flash.script b/contrib/loaders/flash/at91sam7x/at91sam7x_ocl_flash.script
new file mode 100644
index 0000000..85450c1
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/at91sam7x_ocl_flash.script
@@ -0,0 +1,4 @@
+soft_reset_halt
+load_image at91sam7x_ocl.bin 0x200000
+resume 0x200000
+flash probe 0
diff --git a/contrib/loaders/flash/at91sam7x/at91sam7x_ram.ld b/contrib/loaders/flash/at91sam7x/at91sam7x_ram.ld
new file mode 100644
index 0000000..ea06931
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/at91sam7x_ram.ld
@@ -0,0 +1,132 @@
+/****************************************************************************
+*  Copyright (c) 2006 by Michael Fischer. All rights reserved.
+*
+*  Redistribution and use in source and binary forms, with or without
+*  modification, are permitted provided that the following conditions
+*  are met:
+*
+*  1. Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*  2. Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in the
+*     documentation and/or other materials provided with the distribution.
+*  3. Neither the name of the author nor the names of its contributors may
+*     be used to endorse or promote products derived from this software
+*     without specific prior written permission.
+*
+*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+*  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+*  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+*  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+*  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+*  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+*  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+*  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+*  SUCH DAMAGE.
+*
+****************************************************************************
+*
+*  History:
+*
+*  30.03.06  mifi   First Version
+****************************************************************************/
+
+
+ENTRY(ResetHandler)
+SEARCH_DIR(.)
+
+/*
+ * Define stack size here
+ */
+FIQ_STACK_SIZE = 0x0100;
+IRQ_STACK_SIZE = 0x0100;
+ABT_STACK_SIZE = 0x0100;
+UND_STACK_SIZE = 0x0100;
+SVC_STACK_SIZE = 0x0100;
+
+
+MEMORY
+{
+  ram : org = 0x00200000, len = 64k
+}
+
+/*
+ * Do not change the next code
+ */
+SECTIONS
+{
+  .text :
+  {
+    *(.vectors);
+    . = ALIGN(4);
+    *(.init);
+    . = ALIGN(4);
+    *(.text);
+    . = ALIGN(4);
+    *(.rodata);
+    . = ALIGN(4);
+    *(.rodata*);
+    . = ALIGN(4);
+    *(.glue_7t);
+    . = ALIGN(4);
+    *(.glue_7);
+    . = ALIGN(4);
+    etext = .;
+  } > ram
+
+  .data :
+  {
+    PROVIDE (__data_start = .);
+    *(.data)
+    . = ALIGN(4);
+    edata = .;
+    _edata = .;
+    PROVIDE (__data_end = .);
+  } > ram
+
+  .bss :
+  {
+    PROVIDE (__bss_start = .);
+    *(.bss)
+    *(COMMON)
+    . = ALIGN(4);
+    PROVIDE (__bss_end = .);
+
+    . = ALIGN(256);
+
+    PROVIDE (__stack_start = .);
+
+    PROVIDE (__stack_fiq_start = .);
+    . += FIQ_STACK_SIZE;
+    . = ALIGN(4);
+    PROVIDE (__stack_fiq_end = .);
+
+    PROVIDE (__stack_irq_start = .);
+    . += IRQ_STACK_SIZE;
+    . = ALIGN(4);
+    PROVIDE (__stack_irq_end = .);
+
+    PROVIDE (__stack_abt_start = .);
+    . += ABT_STACK_SIZE;
+    . = ALIGN(4);
+    PROVIDE (__stack_abt_end = .);
+
+    PROVIDE (__stack_und_start = .);
+    . += UND_STACK_SIZE;
+    . = ALIGN(4);
+    PROVIDE (__stack_und_end = .);
+
+    PROVIDE (__stack_svc_start = .);
+    . += SVC_STACK_SIZE;
+    . = ALIGN(4);
+    PROVIDE (__stack_svc_end = .);
+    PROVIDE (__stack_end = .);
+    PROVIDE (__heap_start = .);
+  } > ram
+
+}
+/*** EOF ***/
+
diff --git a/contrib/loaders/flash/at91sam7x/crt.s b/contrib/loaders/flash/at91sam7x/crt.s
new file mode 100644
index 0000000..2e434bb
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/crt.s
@@ -0,0 +1,223 @@
+/****************************************************************************
+*  Copyright (c) 2006 by Michael Fischer. All rights reserved.
+*
+*  Redistribution and use in source and binary forms, with or without
+*  modification, are permitted provided that the following conditions
+*  are met:
+*
+*  1. Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*  2. Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in the
+*     documentation and/or other materials provided with the distribution.
+*  3. Neither the name of the author nor the names of its contributors may
+*     be used to endorse or promote products derived from this software
+*     without specific prior written permission.
+*
+*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+*  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+*  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+*  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+*  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+*  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+*  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+*  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+*  SUCH DAMAGE.
+*
+****************************************************************************
+*
+*  History:
+*
+*  18.12.06  mifi   First Version
+*                   The hardware initialization is based on the startup file
+*                   crtat91sam7x256_rom.S from NutOS 4.2.1.
+*                   Therefore partial copyright by egnite Software GmbH.
+****************************************************************************/
+
+/*
+ * Some defines for the program status registers
+ */
+   ARM_MODE_USER  = 0x10      /* Normal User Mode                             */
+   ARM_MODE_FIQ   = 0x11      /* FIQ Fast Interrupts Mode                     */
+   ARM_MODE_IRQ   = 0x12      /* IRQ Standard Interrupts Mode                 */
+   ARM_MODE_SVC   = 0x13      /* Supervisor Interrupts Mode                   */
+   ARM_MODE_ABORT = 0x17      /* Abort Processing memory Faults Mode          */
+   ARM_MODE_UNDEF = 0x1B      /* Undefined Instructions Mode                  */
+   ARM_MODE_SYS   = 0x1F      /* System Running in Priviledged Operating Mode */
+   ARM_MODE_MASK  = 0x1F
+
+   I_BIT          = 0x80      /* disable IRQ when I bit is set */
+   F_BIT          = 0x40      /* disable IRQ when I bit is set */
+
+/*
+ * Register Base Address
+ */
+   AIC_BASE         = 0xFFFFF000
+   AIC_EOICR_OFF    = 0x130
+   AIC_IDCR_OFF     = 0x124
+
+   RSTC_MR          = 0xFFFFFD08
+   RSTC_KEY         = 0xA5000000
+   RSTC_URSTEN      = 0x00000001
+
+   WDT_BASE         = 0xFFFFFD40
+   WDT_MR_OFF       = 0x00000004
+   WDT_WDDIS        = 0x00008000
+
+   MC_BASE          = 0xFFFFFF00
+   MC_FMR_OFF       = 0x00000060
+   MC_FWS_1FWS      = 0x00480100
+
+   .section .vectors,"ax"
+   .code 32
+
+/****************************************************************************/
+/*               Vector table and reset entry                               */
+/****************************************************************************/
+_vectors:
+   ldr pc, ResetAddr    /* Reset                 */
+   ldr pc, UndefAddr    /* Undefined instruction */
+   ldr pc, SWIAddr      /* Software interrupt    */
+   ldr pc, PAbortAddr   /* Prefetch abort        */
+   ldr pc, DAbortAddr   /* Data abort            */
+   ldr pc, ReservedAddr /* Reserved              */
+   ldr pc, IRQAddr      /* IRQ interrupt         */
+   ldr pc, FIQAddr      /* FIQ interrupt         */
+
+
+ResetAddr:     .word ResetHandler
+UndefAddr:     .word UndefHandler
+SWIAddr:       .word SWIHandler
+PAbortAddr:    .word PAbortHandler
+DAbortAddr:    .word DAbortHandler
+ReservedAddr:  .word 0
+IRQAddr:       .word IRQHandler
+FIQAddr:       .word FIQHandler
+
+   .ltorg
+
+   .section .init, "ax"
+   .code 32
+
+   .global ResetHandler
+   .global ExitFunction
+   .extern main
+/****************************************************************************/
+/*                           Reset handler                                  */
+/****************************************************************************/
+ResetHandler:
+   /*
+    * The watchdog is enabled after processor reset. Disable it.
+    */
+   ldr   r1, =WDT_BASE
+   ldr   r0, =WDT_WDDIS
+   str   r0, [r1, #WDT_MR_OFF]
+
+
+   /*
+    * Enable user reset: assertion length programmed to 1ms
+    */
+   ldr   r0, =(RSTC_KEY | RSTC_URSTEN | (4 << 8))
+   ldr   r1, =RSTC_MR
+   str   r0, [r1, #0]
+
+
+   /*
+    * Use 2 cycles for flash access.
+    */
+   ldr   r1, =MC_BASE
+   ldr   r0, =MC_FWS_1FWS
+   str   r0, [r1, #MC_FMR_OFF]
+
+
+   /*
+    * Disable all interrupts. Useful for debugging w/o target reset.
+    */
+   ldr   r1, =AIC_BASE
+   mvn   r0, #0
+   str   r0, [r1, #AIC_EOICR_OFF]
+   str   r0, [r1, #AIC_IDCR_OFF]
+
+
+   /*
+    * Setup a stack for each mode
+    */
+   msr   CPSR_c, #ARM_MODE_UNDEF | I_BIT | F_BIT   /* Undefined Instruction Mode */
+   ldr   sp, =__stack_und_end
+
+   msr   CPSR_c, #ARM_MODE_ABORT | I_BIT | F_BIT   /* Abort Mode */
+   ldr   sp, =__stack_abt_end
+
+   msr   CPSR_c, #ARM_MODE_FIQ | I_BIT | F_BIT     /* FIQ Mode */
+   ldr   sp, =__stack_fiq_end
+
+   msr   CPSR_c, #ARM_MODE_IRQ | I_BIT | F_BIT     /* IRQ Mode */
+   ldr   sp, =__stack_irq_end
+
+   msr   CPSR_c, #ARM_MODE_SVC | I_BIT | F_BIT     /* Supervisor Mode */
+   ldr   sp, =__stack_svc_end
+
+
+   /*
+    * Clear .bss section
+    */
+   ldr   r1, =__bss_start
+   ldr   r2, =__bss_end
+   ldr   r3, =0
+bss_clear_loop:
+   cmp   r1, r2
+   strne r3, [r1], #+4
+   bne   bss_clear_loop
+
+
+   /*
+    * Jump to main
+    */
+   mrs   r0, cpsr
+   bic   r0, r0, #I_BIT | F_BIT     /* Enable FIQ and IRQ interrupt */
+   msr   cpsr, r0
+
+   mov   r0, #0 /* No arguments */
+   mov   r1, #0 /* No arguments */
+   ldr   r2, =main
+   mov   lr, pc
+   bx    r2     /* And jump... */
+
+ExitFunction:
+   nop
+   nop
+   nop
+   b ExitFunction
+
+
+/****************************************************************************/
+/*                         Default interrupt handler                        */
+/****************************************************************************/
+
+UndefHandler:
+   b UndefHandler
+
+SWIHandler:
+   b SWIHandler
+
+PAbortHandler:
+   b PAbortHandler
+
+DAbortHandler:
+   b DAbortHandler
+
+IRQHandler:
+   b IRQHandler
+
+FIQHandler:
+   b FIQHandler
+
+   .weak ExitFunction
+   .weak UndefHandler, PAbortHandler, DAbortHandler
+   .weak IRQHandler, FIQHandler
+
+   .ltorg
+/*** EOF ***/
diff --git a/contrib/loaders/flash/at91sam7x/dcc.c b/contrib/loaders/flash/at91sam7x/dcc.c
new file mode 100644
index 0000000..6ab2417
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/dcc.c
@@ -0,0 +1,51 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#include "dcc.h"
+
+
+/* debug channel read (debugger->MCU) */
+uint32 dcc_rd(void)
+{
+	volatile uint32 dcc_reg;
+
+	do {
+		asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) :);
+	} while ((dcc_reg&1) == 0);
+
+	asm volatile ("mrc p14, 0, %0, C1, C0" : "=r" (dcc_reg) :);
+	return dcc_reg;
+}
+
+
+/* debug channel write (MCU->debugger) */
+int dcc_wr(uint32 data)
+{
+	volatile uint32 dcc_reg;
+
+	do {
+		asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) :);
+		/* operation controled by master, cancel operation
+			 upon reception of data for immediate response */
+		if (dcc_reg&1) return -1;
+	} while (dcc_reg&2);
+
+	asm volatile ("mcr p14, 0, %0, C1, C0" : : "r" (data));
+	return 0;
+}
diff --git a/contrib/loaders/flash/at91sam7x/dcc.h b/contrib/loaders/flash/at91sam7x/dcc.h
new file mode 100644
index 0000000..a3c1393
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/dcc.h
@@ -0,0 +1,31 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#ifndef dccH
+#define dccH
+
+#include "platform.h"
+
+/* debug channel read (debugger->MCU) */
+uint32 dcc_rd(void);
+
+/* debug channel write (MCU->debugger) */
+int dcc_wr(uint32 data);
+
+#endif
diff --git a/contrib/loaders/flash/at91sam7x/main.c b/contrib/loaders/flash/at91sam7x/main.c
new file mode 100644
index 0000000..c4b4dcf
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/main.c
@@ -0,0 +1,107 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#include "platform.h"
+
+#include <flash/nor/ocl.h>
+#include "dcc.h"
+#include "samflash.h"
+
+
+#define BUFSIZE 1024 /* words, i.e. 4 KiB */
+uint32 buffer[1024];
+
+void cmd_flash(uint32 cmd)
+{
+	unsigned int len;
+	uint32 adr;
+	uint32 chksum;
+	unsigned int bi; /* buffer index */
+	unsigned int bi_start; /* receive start mark */
+	unsigned int bi_end; /* receive end mark */
+	unsigned int ofs;
+	int pagenum;
+	int result;
+
+	adr = dcc_rd();
+	len = cmd&0xffff;
+	ofs = adr%flash_page_size;
+	bi_start = ofs/4;
+	bi_end = (ofs + len + 3)/4;
+
+	if (bi_end > BUFSIZE) {
+		dcc_wr(OCL_BUFF_OVER);
+		return;
+	}
+
+	chksum = OCL_CHKS_INIT;
+	for (bi = 0; bi < bi_end; bi++) chksum^=buffer[bi]=dcc_rd();
+
+	if (dcc_rd() != chksum) {
+		dcc_wr(OCL_CHKS_FAIL);
+		return;
+	}
+
+	/* fill in unused positions with unprogrammed values */
+	for (bi = 0; bi < bi_start; bi++) buffer[bi]=0xffffffff;
+	for (bi = bi_end; bi%flash_page_size; bi++) buffer[bi]=0xffffffff;
+
+	result = 0;
+	pagenum = adr/flash_page_size;
+	for (bi = 0; bi < bi_end; bi += flash_page_size/4) {
+		result = flash_page_program(buffer + bi, pagenum++);
+		if (result) break;
+	}
+
+	/* verify written data */
+	if (!result) result = flash_verify(adr, len, ((uint8 *)buffer) + ofs);
+
+	dcc_wr(OCL_CMD_DONE | result);
+}
+
+
+int main (void)
+{
+	uint32 cmd;
+
+	for (;;) {
+		cmd = dcc_rd();
+		switch (cmd&OCL_CMD_MASK) {
+			case OCL_PROBE:
+				dcc_wr(OCL_CMD_DONE | flash_init());
+				dcc_wr(0x100000); /* base */
+				dcc_wr(flash_page_count*flash_page_size); /* size */
+				dcc_wr(1); /* num_sectors */
+				dcc_wr(4096 | ((unsigned long) flash_page_size << 16)); /* buflen and bufalign */
+				break;
+			case OCL_ERASE_ALL:
+				dcc_wr(OCL_CMD_DONE | flash_erase_all());
+				break;
+			case OCL_FLASH_BLOCK:
+				cmd_flash(cmd);
+				break;
+			default:
+				/* unknown command */
+				dcc_wr(OCL_CMD_ERR);
+				break;
+		}
+	}
+
+	return(0); /* we shall never get here, just to supress compiler warning */
+}
diff --git a/contrib/loaders/flash/at91sam7x/makefile b/contrib/loaders/flash/at91sam7x/makefile
new file mode 100644
index 0000000..c3eaf12
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/makefile
@@ -0,0 +1,130 @@
+##############################################################################################
+# Start of default section
+#
+
+TRGT = arm-elf-
+CC   = $(TRGT)gcc
+CP   = $(TRGT)objcopy
+AS   = $(TRGT)gcc -x assembler-with-cpp
+HEX  = $(CP) -O ihex
+BIN  = $(CP) -O binary
+OBJDUMP = $(TRGT)objdump
+
+MCU  = arm7tdmi
+
+# List all default C defines here, like -D_DEBUG=1
+DDEFS =
+
+# List all default ASM defines here, like -D_DEBUG=1
+DADEFS =
+
+# List all default directories to look for include files here
+DINCDIR =
+
+# List the default directory to look for the libraries here
+DLIBDIR =
+
+# List all default libraries here
+DLIBS =
+
+#
+# End of default section
+##############################################################################################
+
+##############################################################################################
+# Start of user section
+#
+
+# Define project name here
+PROJECT = at91sam7x_ocl
+
+# Define linker script file here
+LDSCRIPT= at91sam7x_ram.ld
+
+# List all user C define here, like -D_DEBUG=1
+UDEFS =
+
+# Define ASM defines here
+UADEFS =
+
+# List C source files here
+SRC  = main.c dcc.c samflash.c
+
+# List ASM source files here
+ASRC = crt.s
+
+# List all user directories here
+UINCDIR =
+
+# List the user directory to look for the libraries here
+ULIBDIR =
+
+# List all user libraries here
+ULIBS =
+
+# Define optimisation level here
+OPT = -O2
+
+#
+# End of user defines
+##############################################################################################
+
+
+INCDIR  = $(patsubst %,-I%,$(DINCDIR) $(UINCDIR))
+LIBDIR  = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
+DEFS    = $(DDEFS) $(UDEFS)
+ADEFS   = $(DADEFS) $(UADEFS)
+OBJS    = $(ASRC:.s=.o) $(SRC:.c=.o)
+LIBS    = $(DLIBS) $(ULIBS)
+MCFLAGS = -mcpu=$(MCU)
+
+ASFLAGS = $(MCFLAGS) -g -gdwarf-2 -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
+CPFLAGS = $(MCFLAGS) $(OPT) -gdwarf-2 -mthumb-interwork -fomit-frame-pointer -Wall -Wstrict-prototypes -fverbose-asm -Wa,-ahlms=$(<:.c=.lst) $(DEFS)
+LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch $(LIBDIR)
+
+# Generate dependency information
+#CPFLAGS += -MD -MP -MF .dep/$(@F).d
+
+#
+# makefile rules
+#
+
+all: $(OBJS) $(PROJECT).elf $(PROJECT).hex $(PROJECT).bin $(PROJECT).lst
+
+%o : %c
+	$(CC) -c $(CPFLAGS) -I . $(INCDIR) $< -o $@
+
+%o : %s
+	$(AS) -c $(ASFLAGS) $< -o $@
+
+%elf: $(OBJS)
+	$(CC) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
+
+%hex: %elf
+	$(HEX) $< $@
+
+%bin: %elf
+	$(BIN) $< $@
+
+%.lst: %.elf
+	$(OBJDUMP) -h -S $< > $@
+
+clean:
+	-rm -f $(OBJS)
+	-rm -f $(PROJECT).elf
+	-rm -f $(PROJECT).map
+	-rm -f $(PROJECT).hex
+	-rm -f $(PROJECT).bin
+	-rm -f $(PROJECT).lst
+	-rm -f $(SRC:.c=.c.bak)
+	-rm -f $(SRC:.c=.lst)
+	-rm -f $(ASRC:.s=.s.bak)
+	-rm -f $(ASRC:.s=.lst)
+	-rm -fR .dep
+
+#
+# Include the dependency files, should be the last of the makefile
+#
+#-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+# *** EOF ***
\ No newline at end of file
diff --git a/contrib/loaders/flash/at91sam7x/ocl.h b/contrib/loaders/flash/at91sam7x/ocl.h
new file mode 100644
index 0000000..1fe4596
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/ocl.h
@@ -0,0 +1,40 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#ifndef OCL_H
+#define OCL_H
+
+/* command/response mask */
+#define OCL_CMD_MASK 0xFFFF0000L
+
+/* commads */
+#define OCL_FLASH_BLOCK 0x0CFB0000L
+#define OCL_ERASE_BLOCK 0x0CEB0000L
+#define OCL_ERASE_ALL 0x0CEA0000L
+#define OCL_PROBE 0x0CBE0000L
+
+/* responses */
+#define OCL_CMD_DONE 0x0ACD0000L
+#define OCL_CMD_ERR 0x0ACE0000L
+#define OCL_CHKS_FAIL 0x0ACF0000L
+#define OCL_BUFF_OVER 0x0AB00000L
+
+#define OCL_CHKS_INIT 0xC100CD0CL
+
+#endif /* OCL_H */
diff --git a/contrib/loaders/flash/at91sam7x/platform.h b/contrib/loaders/flash/at91sam7x/platform.h
new file mode 100644
index 0000000..2b26e4b
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/platform.h
@@ -0,0 +1,46 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#ifndef platformH
+#define platformH
+
+#include "samregs.h"
+
+
+#define outb(_reg, _val)  (*((volatile unsigned char *)(_reg)) = (_val))
+#define outw(_reg, _val)  (*((volatile unsigned short *)(_reg)) = (_val))
+#define outr(_reg, _val)  (*((volatile unsigned int *)(_reg)) = (_val))
+
+#define inb(_reg)   (*((volatile unsigned char *)(_reg)))
+#define inw(_reg)   (*((volatile unsigned short *)(_reg)))
+#define inr(_reg)   (*((volatile unsigned int *)(_reg)))
+
+#define _BV(bit)    (1 << (bit))
+
+
+typedef signed char int8;
+typedef unsigned char uint8;
+
+typedef signed short int16;
+typedef unsigned short uint16;
+
+typedef signed int int32;
+typedef unsigned int uint32;
+
+#endif
diff --git a/contrib/loaders/flash/at91sam7x/samflash.c b/contrib/loaders/flash/at91sam7x/samflash.c
new file mode 100644
index 0000000..49c84c8
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/samflash.c
@@ -0,0 +1,196 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#include "samflash.h"
+
+
+unsigned int flash_page_count = 1024;
+unsigned int flash_page_size = 256;
+
+/* pages per lock bit */
+unsigned int flash_lock_pages = 1024/16;
+
+
+/* detect chip and set loader parameters */
+int flash_init(void)
+{
+	unsigned int nvpsiz;
+
+	nvpsiz = (inr(DBGU_CIDR) >> 8)&0xf;
+
+	switch (nvpsiz) {
+		case 3:
+			/* AT91SAM7x32 */
+			flash_page_count = 256;
+			flash_page_size = 128;
+			flash_lock_pages = 256/8;
+			break;
+		case 5:
+			/* AT91SAM7x64 */
+			flash_page_count = 512;
+			flash_page_size = 128;
+			flash_lock_pages = 512/16;
+			break;
+		case 7:
+			/* AT91SAM7x128*/
+			flash_page_count = 512;
+			flash_page_size = 256;
+			flash_lock_pages = 512/8;
+			break;
+		case 9:
+			/* AT91SAM7x256 */
+			flash_page_count = 1024;
+			flash_page_size = 256;
+			flash_lock_pages = 1024/16;
+			break;
+		case 10:
+			/* AT91SAM7x512 */
+			flash_page_count = 2048;
+			flash_page_size = 256;
+			flash_lock_pages = 2048/32;
+			break;
+		default:
+			return FLASH_STAT_INITE;
+	}
+	return FLASH_STAT_OK;
+}
+
+
+/* program single flash page */
+int flash_page_program(uint32 *data, int page_num)
+{
+	int i;
+	int efc_ofs;
+
+	uint32 *flash_ptr;
+	uint32 *data_ptr;
+
+	/* select proper controller */
+	if (page_num >= 1024) efc_ofs = 0x10;
+	else efc_ofs = 0;
+
+	/* wait until FLASH is ready, just for sure */
+	while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+	/* calculate page address, only lower 8 bits are used to address the latch,
+		 but the upper part of address is needed for writing to proper EFC */
+	flash_ptr = (uint32 *)(FLASH_AREA_ADDR + (page_num*flash_page_size));
+	data_ptr = data;
+
+	/* copy data to latch */
+	for (i = flash_page_size/4; i; i--) {
+		/* we do not use memcpy to be sure that only 32 bit access is used */
+		*(flash_ptr++)=*(data_ptr++);
+	}
+
+	/* page number and page write command to FCR */
+	outr(MC_FCR + efc_ofs, ((page_num&0x3ff) << 8) | MC_KEY | MC_FCMD_WP);
+
+	/* wait until it's done */
+	while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+	/* check for errors */
+	if ((inr(MC_FSR + efc_ofs)&MC_PROGE)) return FLASH_STAT_PROGE;
+	if ((inr(MC_FSR + efc_ofs)&MC_LOCKE)) return FLASH_STAT_LOCKE;
+
+#if 0
+	/* verify written data */
+	flash_ptr = (uint32 *)(FLASH_AREA_ADDR + (page_num*flash_page_size));
+	data_ptr = data;
+
+	for (i = flash_page_size/4; i; i--) {
+		if (*(flash_ptr++)!=*(data_ptr++)) return FLASH_STAT_VERIFE;
+	}
+#endif
+
+	return FLASH_STAT_OK;
+}
+
+
+int flash_erase_plane(int efc_ofs)
+{
+	unsigned int lockbits;
+	int page_num;
+
+	page_num = 0;
+	lockbits = inr(MC_FSR + efc_ofs) >> 16;
+	while (lockbits) {
+		if (lockbits&1) {
+
+			/* wait until FLASH is ready, just for sure */
+			while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+			outr(MC_FCR + efc_ofs, ((page_num&0x3ff) << 8) | 0x5a000004);
+
+			/* wait until it's done */
+			while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+			/* check for errors */
+			if ((inr(MC_FSR + efc_ofs)&MC_PROGE)) return FLASH_STAT_PROGE;
+			if ((inr(MC_FSR + efc_ofs)&MC_LOCKE)) return FLASH_STAT_LOCKE;
+
+		}
+		if ((page_num += flash_lock_pages) > flash_page_count) break;
+		lockbits>>=1;
+	}
+
+	/* wait until FLASH is ready, just for sure */
+	while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+	/* erase all command to FCR */
+	outr(MC_FCR + efc_ofs, 0x5a000008);
+
+	/* wait until it's done */
+	while ((inr(MC_FSR + efc_ofs)&MC_FRDY) == 0);
+
+	/* check for errors */
+	if ((inr(MC_FSR + efc_ofs)&MC_PROGE)) return FLASH_STAT_PROGE;
+	if ((inr(MC_FSR + efc_ofs)&MC_LOCKE)) return FLASH_STAT_LOCKE;
+
+	/* set no erase before programming */
+	outr(MC_FMR + efc_ofs, inr(MC_FMR + efc_ofs) | 0x80);
+
+	return FLASH_STAT_OK;
+}
+
+
+/* erase whole chip */
+int flash_erase_all(void)
+{
+	int result;
+
+	if ((result = flash_erase_plane(0)) != FLASH_STAT_OK) return result;
+
+	/* the second flash controller, if any */
+	if (flash_page_count > 1024) result = flash_erase_plane(0x10);
+
+	return result;
+}
+
+
+int flash_verify(uint32 adr, unsigned int len, uint8 *src)
+{
+	unsigned char *flash_ptr;
+
+	flash_ptr = (uint8 *)FLASH_AREA_ADDR + adr;
+	for (;len; len--) {
+		if (*(flash_ptr++)!=*(src++)) return FLASH_STAT_VERIFE;
+	}
+	return FLASH_STAT_OK;
+}
diff --git a/contrib/loaders/flash/at91sam7x/samflash.h b/contrib/loaders/flash/at91sam7x/samflash.h
new file mode 100644
index 0000000..1de02ae
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/samflash.h
@@ -0,0 +1,48 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Pavel Chromy                                    *
+ *   chromy@asix.cz                                                        *
+ *                                                                         *
+ *   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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
+ ***************************************************************************/
+#ifndef samflashH
+#define samflashH
+
+#include "platform.h"
+
+#define FLASH_AREA_ADDR 0x100000
+
+#define FLASH_STAT_OK 0
+#define FLASH_STAT_PROGE 1
+#define FLASH_STAT_LOCKE 2
+#define FLASH_STAT_VERIFE 3
+#define FLASH_STAT_INITE 4
+
+extern unsigned int flash_page_count;
+extern unsigned int flash_page_size; /* words */
+
+/* detect chip and set loader parameters */
+int flash_init(void);
+
+/* program single flash page */
+int flash_page_program(uint32 *data, int page_num);
+
+/* erase whole chip */
+int flash_erase_all(void);
+
+/* verify written data */
+int flash_verify(uint32 adr, unsigned int len, uint8 *src);
+
+#endif
diff --git a/contrib/loaders/flash/at91sam7x/samregs.h b/contrib/loaders/flash/at91sam7x/samregs.h
new file mode 100644
index 0000000..b206fd2
--- /dev/null
+++ b/contrib/loaders/flash/at91sam7x/samregs.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2005-2006 by egnite Software GmbH. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
+ * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * For additional information see http://www.ethernut.de/
+ */
+
+
+#ifndef samregsH
+#define samregsH
+
+
+/*
+ * Register definitions below copied from NutOS
+ */
+
+#define DBGU_BASE       0xFFFFF200      /*!< \brief DBGU base address. */
+
+#define DBGU_CIDR_OFF           0x00000040      /*!< \brief DBGU chip ID register offset. */
+#define DBGU_CIDR   (DBGU_BASE + DBGU_CIDR_OFF) /*!< \brief DBGU chip ID register. */
+
+
+#define MC_BASE         0xFFFFFF00      /*!< \brief Memory controller base. */
+
+#define MC_FMR_OFF              0x00000060      /*!< \brief MC flash mode register offset. */
+#define MC_FMR      (MC_BASE + MC_FMR_OFF)      /*!< \brief MC flash mode register address. */
+#define MC_FRDY                 0x00000001      /*!< \brief Flash ready. */
+#define MC_LOCKE                0x00000004      /*!< \brief Lock error. */
+#define MC_PROGE                0x00000008      /*!< \brief Programming error. */
+#define MC_NEBP                 0x00000080      /*!< \brief No erase before programming. */
+#define MC_FWS_MASK             0x00000300      /*!< \brief Flash wait state mask. */
+#define MC_FWS_1R2W             0x00000000      /*!< \brief 1 cycle for read, 2 for write operations. */
+#define MC_FWS_2R3W             0x00000100      /*!< \brief 2 cycles for read, 3 for write operations. */
+#define MC_FWS_3R4W             0x00000200      /*!< \brief 3 cycles for read, 4 for write operations. */
+#define MC_FWS_4R4W             0x00000300      /*!< \brief 4 cycles for read and write operations. */
+#define MC_FMCN_MASK            0x00FF0000      /*!< \brief Flash microsecond cycle number mask. */
+
+#define MC_FCR_OFF              0x00000064      /*!< \brief MC flash command register offset. */
+#define MC_FCR      (MC_BASE + MC_FCR_OFF)      /*!< \brief MC flash command register address. */
+#define MC_FCMD_MASK            0x0000000F      /*!< \brief Flash command mask. */
+#define MC_FCMD_NOP             0x00000000      /*!< \brief No command. */
+#define MC_FCMD_WP              0x00000001      /*!< \brief Write page. */
+#define MC_FCMD_SLB             0x00000002      /*!< \brief Set lock bit. */
+#define MC_FCMD_WPL             0x00000003      /*!< \brief Write page and lock. */
+#define MC_FCMD_CLB             0x00000004      /*!< \brief Clear lock bit. */
+#define MC_FCMD_EA              0x00000008      /*!< \brief Erase all. */
+#define MC_FCMD_SGPB            0x0000000B      /*!< \brief Set general purpose NVM bit. */
+#define MC_FCMD_CGPB            0x0000000D      /*!< \brief Clear general purpose NVM bit. */
+#define MC_FCMD_SSB             0x0000000F      /*!< \brief Set security bit. */
+#define MC_PAGEN_MASK           0x0003FF00      /*!< \brief Page number mask. */
+#define MC_KEY                  0x5A000000      /*!< \brief Writing protect key. */
+
+#define MC_FSR_OFF              0x00000068      /*!< \brief MC flash status register offset. */
+#define MC_FSR      (MC_BASE + MC_FSR_OFF)      /*!< \brief MC flash status register address. */
+#define MC_SECURITY             0x00000010      /*!< \brief Security bit status. */
+
+
+#endif