* Patch by Robin Getz, 13 Oct 2004:

  Add standalone application to change SMC91C111 MAC addresses,
  see examples/README.smc91111_eeprom

* Patch by Xiaogeng (Shawn) Jin, 12 Oct 2004:
  Fix Flash support for ARM Integrator CP.

2 files changed, 637 insertions, 0 deletions

diff --git a/examples/README.smc91111_eeprom b/examples/README.smc91111_eeprom
new file mode 100644
index 0000000..28e7e69
--- /dev/null
+++ b/examples/README.smc91111_eeprom
@@ -0,0 +1,246 @@
+This is the readme for the Das U-Boot standalone program smc91111
+
+The main purpose of this is to manage MAC addresses on platforms
+which include the SMC91111 integrated 10/100 MAC Phy, with attached
+EEPROMs.
+
+
+Contents:
+------------------------
+1. Ensuring U-boot's MAC address can be set in hardware
+2. Running the smc91111_eeprom program
+3. Setting MAC addresses
+4. Other things you can do with this
+5. Things to be done.
+
+
+1. Ensuring U-boot's MAC address can be set in hardware
+--------------------------------------------------------------------------
+
+On the Internet - MAC addresses are very important. Short for Media
+Access Control address, a hardware address that uniquely identifies
+each node of a network. When things are not unique - bad things
+can happen.  This is why U-Boot makes it difficult to change MAC
+addresses.
+
+To find out who has a MAC address, or to purchase MAC addresses, goto
+the IEEE, at:
+http://standards.ieee.org/regauth/oui/index.shtml
+
+To change your MAC address, there can not be a MAC address predefined in
+U-Boot. To ensure that this does not occur, check your
+include/configs/<board_name>.h file, and check to see that the following
+settings are _not_ or commented out there.
+
+#define HARDCODE_MAC			1
+#define CONFIG_ETHADDR			02:80:ad:20:31:b8
+
+The purpose of HARDCODE_MAC is to hardcode the MAC address in software,
+(not what we want), or to preset it to 02:80:ad:20:31:b8 (not what we
+want either).
+
+You can check this in a running U-Boot, by doing a power cycle, then
+before U-Boot tries to do any networking, running the 'printenv' command
+
+  BOOT> printenv
+
+  ethaddr=02:80:ad:20:31:b8
+
+If you see the 'ethaddr' variable show up, like the above, you need to
+recompile U-Boot, with the above settings commented out of the
+include/configs/<board_name>.h file.
+
+2. Running the smc91111_eeprom program
+---------------------------------------------------------------------
+
+After Uboot is compiled, there should be three files of interest:
+-rwxr-xr-x    1		8806 2004-10-11 14:00 smc91111_eeprom	    <- ELF
+-rwxr-xr-x    1		3440 2004-10-11 14:00 smc91111_eeprom.bin   <- BIN
+-rwxr-xr-x    1		9524 2004-10-11 14:00 smc91111_eeprom.srec  <- SREC
+
+if there is not, check the examples/Makefile, and ensure there is something
+like for your architecture:
+
+   ifeq ($(ARCH),blackfin)
+   SREC	  += smc91111_eeprom.srec
+   BIN	  += smc91111_eeprom.bin smc91111_eeprom
+   endif
+
+To load the files: there are two methods: a) serial or b) network. Since
+it is not a good idea to start doing things on the network before the
+MAC address is set, this example will do things over serial.
+
+a) Loading the elf file via the serial port
+--------------------------------------------
+Loading the elf is very easy - just ensure that the location
+you specify things to load as is not the load address specified
+in the Makefile.
+
+BOOT> loadb 0x1000000
+
+## Ready for binary (kermit) download to 0x01000000 at 57600 bps...
+
+(type CNTL-\ then C)
+(Back at local machine)
+----------------------------------------------------
+Kermit>send ~/u-boot_1.1.1/examples/smc91111_eeprom
+Kermit>connect
+
+Connecting to /dev/ttyS0, speed 57600
+ Escape character: Ctrl-\ (ASCII 28, FS): enabled
+Type the escape character followed by C to get back,
+or followed by ? to see other options.
+----------------------------------------------------
+## Total Size	   = 0x00002266 = 8806 Bytes
+## Start Addr	   = 0x01000000
+
+BOOT> bootelf 0x1000000
+
+Loading .text @ 0x00001000 (3440 bytes)
+## Starting application at 0x000010d8 ...
+
+SMC91111>
+
+b) Loading the binary file via the serial port
+-----------------------------------------------
+For many toolchains, the entry point is not the load point.
+The Load point is a hard coded address from the
+examples/Makefile. The entry point can be found by doing something
+like:
+
+  u-boot_1.1.1/examples> bfin-elf-objdump -d smc91111_eeprom |less
+
+  smc91111_eeprom:     file format elf32-bfin
+
+  Disassembly of section .text:
+
+  00001000 <smc91111_eeprom-0xd8>:
+      1000:
+  000010d8 <smc91111_eeprom>:
+
+You can see that the entry point (or the address that should be
+jumped to is 0x10d8). This is also the same as the entry point
+of the elf file.
+
+Now we load it to the actual load location:
+
+BOOT> loadb 0x1000
+
+## Ready for binary (kermit) download to 0x00001000 at 57600 bps...
+
+(Back at pinky.dsl-only.net)
+----------------------------------------------------
+Kermit>send /tftpboot/eeprom.bin
+Kermit>connect
+
+Connecting to /dev/ttyS0, speed 57600
+ Escape character: Ctrl-\ (ASCII 28, FS): enabled
+Type the escape character followed by C to get back,
+or followed by ? to see other options.
+----------------------------------------------------
+## Total Size	   = 0x00000d70 = 3440 Bytes
+## Start Addr	   = 0x00001000
+
+BOOT> go 0x10D8
+
+## Starting application at 0x000010D8 ...
+
+SMC91111>
+
+3. Setting MAC addresses
+--------------------------------------------------------------------------
+
+The MAC address can be stored in four locations:
+
+-Boot environmental variable in Flash <- can not change, without
+					  re-flashing U-boot.
+U-Boot environental variable	       <- can not change, without
+					  resetting board/U-Boot
+LAN91C111 Registers		       <- volitle
+LAN91C111 EEPROM		       <- Non Volitle
+
+If you have not activated the network, and do not have a hardcoded
+or pre-assigned MAC address in U-boot, the environmental variables
+should be blank, and allow you to set things one time.
+
+To set the EEPROM MAC address to 12:34:56:78:9A:BC
+
+SMC91111> W E 20 3412
+
+Writing EEPROM register 20 with 3412
+SMC91111> W E 21 7856
+
+Writing EEPROM register 21 with 7856
+SMC91111> W E 22 BC9A
+
+Writing EEPROM register 22 with bc9a
+EEPROM contents copied to MAC
+SMC91111> P
+
+Current MAC Address in SMSC91111 12:34:56:78:9a:bc
+Current MAC Address in EEPROM	 12:34:56:78:9a:bc
+
+(CNTRL-C to exit)
+SMC91111> ## Application terminated, rc = 0x0
+
+BOOT> reset
+U-Boot 1.1.1 (gcc version: 3.3.3)
+Release Version Beta released on Oct 10 2004 - 00:34:35
+Blackfin support by LG Soft India
+For further information please check this link http://www.blackfin.uclinux.org
+BOOT> ping 192.168.0.4
+
+Using MAC Address 12:34:56:78:9A:BC
+host 192.168.0.4 is alive
+
+
+4. Other things that you can do
+--------------------------------------------------------------------------
+After the stand alone application is running, there are a few options:
+ - P : Print the MAC
+ - D : Dump the LAN91C111 EEPROM contents
+ - M : Dump the LAN91C111 MAC contents
+ - C : Copies the MAC address from the EEPROM to the LAN91C111
+ - W : Write a register in the EEPROM or in the MAC
+
+SMC91111> P
+
+Current MAC Address in SMSC91111 12:34:56:78:9a:bc
+Current MAC Address in EEPROM	 12:34:56:78:9a:bc
+
+SMC91111> D
+
+IOS2-0	  000	  001	  002	  003	  004	  005	  006	  007
+CONFIG 00:ffff 04:ffff 08:ffff 0c:ffff 10:ffff 14:ffff 18:ffff 1c:ffff
+BASE   01:ffff 05:ffff 09:ffff 0d:ffff 11:ffff 15:ffff 19:ffff 1d:ffff
+       02:ffff 06:ffff 0a:ffff 0e:0020 12:ffff 16:ffff 1a:ffff 1e:ffff
+       03:ffff 07:ffff 0b:ffff 0f:ffff 13:ffff 17:ffff 1b:ffff 1f:ffff
+
+20:3412 21:7856 22:bc9a 23:ffff 24:ffff 25:ffff 26:ffff 27:ffff
+28:ffff 29:ffff 2a:ffff 2b:ffff 2c:ffff 2d:ffff 2e:ffff 2f:ffff
+30:ffff 31:ffff 32:ffff 33:ffff 34:ffff 35:ffff 36:ffff 37:ffff
+38:ffff 39:ffff 3a:ffff 3b:ffff 3c:ffff 3d:ffff 3e:ffff 3f:ffff
+
+SMC91111> M
+
+    Bank0 Bank1 Bank2 Bank3
+00  0000  a0b1	3332  0000
+02  0000  1801	8000  0000
+04  0000  3412	8080  0000
+06  0000  7856	003f  0000
+08  0404  bc9a	02df  3332
+0a  0000  ffff	02df  3391
+0c  0000  1214	0004  001f
+0e  3300  3301	3302  3303
+
+SMC91111> C
+
+EEPROM contents copied to MAC
+
+SMC91111> W E 2A ABCD
+
+Writing EEPROM register 2a with abcd
+
+SMC91111> W M 14 FF00
+
+Writing MAC register bank 1, reg 04 with ff00
diff --git a/examples/smc91111_eeprom.c b/examples/smc91111_eeprom.c
new file mode 100644
index 0000000..885f933
--- /dev/null
+++ b/examples/smc91111_eeprom.c
@@ -0,0 +1,391 @@
+/*
+ * (C) Copyright 2004
+ * Robin Getz rgetz@blacfin.uclinux.org
+ *
+ * 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
+ *
+ * Heavily borrowed from the following peoples GPL'ed software:
+ *  - Wolfgang Denk, DENX Software Engineering, wd@denx.de
+ *       Das U-boot
+ *  - Ladislav Michl ladis@linux-mips.org
+ *       A rejected patch on the U-Boot mailing list
+ */
+
+#include <common.h>
+#include <exports.h>
+#include "../drivers/smc91111.h"
+
+#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
+#define EEPROM		0x1;
+#define MAC		0x2;
+#define	UNKNOWN 	0x4;
+
+void dump_reg (void);
+void dump_eeprom (void);
+int write_eeprom_reg (int, int);
+void copy_from_eeprom (void);
+void print_MAC (void);
+int read_eeprom_reg (int);
+void print_macaddr (void);
+
+int smc91111_eeprom (int argc, char *argv[])
+{
+	int c, i, j, done, line, reg, value, start, what;
+	char input[50];
+
+	/* Print the ABI version */
+	app_startup (argv);
+	if (XF_VERSION != (int) get_version ()) {
+		printf ("Expects ABI version %d\n", XF_VERSION);
+		printf ("Actual U-Boot ABI version %d\n",
+			(int) get_version ());
+		printf ("Can't run\n\n");
+		return (0);
+	}
+
+	asm ("p2.h = 0xFFC0;");
+	asm ("p2.l = 0x0730;");
+	asm ("r0 = 0x01;");
+	asm ("w[p2] = r0;");
+	asm ("ssync;");
+
+	asm ("p2.h = 0xffc0;");
+	asm ("p2.l = 0x0708;");
+	asm ("r0 = 0x01;");
+	asm ("w[p2] = r0;");
+	asm ("ssync;");
+
+	if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
+		printf ("Can't find SMSC91111\n");
+		return (0);
+	}
+
+	done = 0;
+	what = UNKNOWN;
+	printf ("\n");
+	while (!done) {
+		/* print the prompt */
+		printf ("SMC91111> ");
+		line = 0;
+		i = 0;
+		start = 1;
+		while (!line) {
+			/* Wait for a keystroke */
+			while (!tstc ());
+
+			c = getc ();
+			/* Make Uppercase */
+			if (c >= 'Z')
+				c -= ('a' - 'A');
+			/* printf(" |%02x| ",c); */
+
+			switch (c) {
+			case '\r':	/* Enter                */
+			case '\n':
+				input[i] = 0;
+				puts ("\r\n");
+				line = 1;
+				break;
+			case '\0':	/* nul                  */
+				continue;
+
+			case 0x03:	/* ^C - break           */
+				input[0] = 0;
+				i = 0;
+				line = 1;
+				done = 1;
+				break;
+
+			case 0x5F:
+			case 0x08:	/* ^H  - backspace      */
+			case 0x7F:	/* DEL - backspace      */
+				if (i > 0) {
+					puts ("\b \b");
+					i--;
+				}
+				break;
+			default:
+				if (start) {
+					if ((c == 'W') || (c == 'D')
+					    || (c == 'M') || (c == 'C')
+					    || (c == 'P')) {
+						putc (c);
+						input[i] = c;
+						if (i <= 45)
+							i++;
+						start = 0;
+					}
+				} else {
+					if ((c >= '0' && c <= '9')
+					    || (c >= 'A' && c <= 'F')
+					    || (c == 'E') || (c == 'M')
+					    || (c == ' ')) {
+						putc (c);
+						input[i] = c;
+						if (i <= 45)
+							i++;
+						break;
+					}
+				}
+				break;
+			}
+		}
+
+		for (; i < 49; i++)
+			input[i] = 0;
+
+		switch (input[0]) {
+		case ('W'):
+			/* Line should be w reg value */
+			i = 0;
+			reg = 0;
+			value = 0;
+			/* Skip to the next space or end) */
+			while ((input[i] != ' ') && (input[i] != 0))
+				i++;
+
+			if (input[i] != 0)
+				i++;
+
+			/* Are we writing to EEPROM or MAC */
+			switch (input[i]) {
+			case ('E'):
+				what = EEPROM;
+				break;
+			case ('M'):
+				what = MAC;
+				break;
+			default:
+				what = UNKNOWN;
+				break;
+			}
+
+			/* skip to the next space or end */
+			while ((input[i] != ' ') && (input[i] != 0))
+				i++;
+			if (input[i] != 0)
+				i++;
+
+			/* Find register to write into */
+			j = 0;
+			while ((input[i] != ' ') && (input[i] != 0)) {
+				j = input[i] - 0x30;
+				if (j >= 0xA) {
+					j -= 0x07;
+				}
+				reg = (reg * 0x10) + j;
+				i++;
+			}
+
+			while ((input[i] != ' ') && (input[i] != 0))
+				i++;
+
+			if (input[i] != 0)
+				i++;
+			else
+				what = UNKNOWN;
+
+			/* Get the value to write */
+			j = 0;
+			while ((input[i] != ' ') && (input[i] != 0)) {
+				j = input[i] - 0x30;
+				if (j >= 0xA) {
+					j -= 0x07;
+				}
+				value = (value * 0x10) + j;
+				i++;
+			}
+
+			switch (what) {
+			case 1:
+				printf ("Writing EEPROM register %02x with %04x\n",
+					reg, value);
+				write_eeprom_reg (value, reg);
+				break;
+			case 2:
+				printf ("Writing MAC register bank %i,
+					reg %02x with %04x\n", reg >> 4, reg & 0xE, value);
+				SMC_SELECT_BANK (reg >> 4);
+				SMC_outw (value, reg & 0xE);
+				break;
+			default:
+				printf ("Wrong\n");
+				break;
+			}
+			break;
+		case ('D'):
+			dump_eeprom ();
+			break;
+		case ('M'):
+			dump_reg ();
+			break;
+		case ('C'):
+			copy_from_eeprom ();
+			break;
+		case ('P'):
+			print_macaddr ();
+			break;
+		default:
+			break;
+		}
+
+	}
+
+	return (0);
+}
+
+void copy_from_eeprom (void)
+{
+	int i;
+
+	SMC_SELECT_BANK (1);
+	SMC_outw ((SMC_inw (CTL_REG) & !CTL_EEPROM_SELECT) | CTL_RELOAD,
+		  CTL_REG);
+	i = 100;
+	while ((SMC_inw (CTL_REG) & CTL_RELOAD) && --i)
+		udelay (100);
+	if (i == 0) {
+		printf ("Timeout Refreshing EEPROM registers\n");
+	} else {
+		printf ("EEPROM contents copied to MAC\n");
+	}
+
+}
+
+void print_macaddr (void)
+{
+	int i, j, k, mac[6];
+
+	printf ("Current MAC Address in SMSC91111 ");
+	SMC_SELECT_BANK (1);
+	for (i = 0; i < 5; i++) {
+		printf ("%02x:", SMC_inb (ADDR0_REG + i));
+	}
+
+	printf ("%02x\n", SMC_inb (ADDR0_REG + 5));
+
+	i = 0;
+	for (j = 0x20; j < 0x23; j++) {
+		k = read_eeprom_reg (j);
+		mac[i] = k & 0xFF;
+		i++;
+		mac[i] = k >> 8;
+		i++;
+	}
+
+	printf ("Current MAC Address in EEPROM    ");
+	for (i = 0; i < 5; i++)
+		printf ("%02x:", mac[i]);
+	printf ("%02x\n", mac[5]);
+
+}
+void dump_eeprom (void)
+{
+	int j, k;
+
+	printf ("IOS2-0    ");
+	for (j = 0; j < 8; j++) {
+		printf ("%03x     ", j);
+	}
+	printf ("\n");
+
+	for (k = 0; k < 4; k++) {
+		if (k == 0)
+			printf ("CONFIG ");
+		if (k == 1)
+			printf ("BASE   ");
+		if ((k == 2) || (k == 3))
+			printf ("       ");
+		for (j = 0; j < 0x20; j += 4) {
+			printf ("%02x:%04x ", j + k, read_eeprom_reg (j + k));
+		}
+		printf ("\n");
+	}
+
+	for (j = 0x20; j < 0x40; j++) {
+		if ((j & 0x07) == 0)
+			printf ("\n");
+		printf ("%02x:%04x ", j, read_eeprom_reg (j));
+	}
+	printf ("\n");
+
+}
+
+int read_eeprom_reg (int reg)
+{
+	int timeout;
+
+	SMC_SELECT_BANK (2);
+	SMC_outw (reg, PTR_REG);
+
+	SMC_SELECT_BANK (1);
+	SMC_outw (SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
+		  CTL_REG);
+	timeout = 100;
+	while ((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
+		udelay (100);
+	if (timeout == 0) {
+		printf ("Timeout Reading EEPROM register %02x\n", reg);
+		return 0;
+	}
+
+	return SMC_inw (GP_REG);
+
+}
+
+int write_eeprom_reg (int value, int reg)
+{
+	int timeout;
+
+	SMC_SELECT_BANK (2);
+	SMC_outw (reg, PTR_REG);
+
+	SMC_SELECT_BANK (1);
+	SMC_outw (value, GP_REG);
+	SMC_outw (SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
+	timeout = 100;
+	while ((SMC_inw (CTL_REG) & CTL_STORE) && --timeout)
+		udelay (100);
+	if (timeout == 0) {
+		printf ("Timeout Writing EEPROM register %02x\n", reg);
+		return 0;
+	}
+
+	return 1;
+
+}
+
+void dump_reg (void)
+{
+	int i, j;
+
+	printf ("    ");
+	for (j = 0; j < 4; j++) {
+		printf ("Bank%i ", j);
+	}
+	printf ("\n");
+	for (i = 0; i < 0xF; i += 2) {
+		printf ("%02x  ", i);
+		for (j = 0; j < 4; j++) {
+			SMC_SELECT_BANK (j);
+			printf ("%04x  ", SMC_inw (i));
+		}
+		printf ("\n");
+	}
+}