Add "chip_config" command for PPC4xx bootstrap configuration

This patch adds a generic command for programming I2C bootstrap
eeproms on PPC4xx. An implementation for Canyonlands board is
included.

The command name is intentionally chosen not to be PPC4xx specific.
This way other CPU's/SoC's can implement a similar command under
the same name, perhaps with a different syntax.

Usage on Canyonlands:

=> chip_config
Available configurations (I2C address 0x52):
600-nor          - NOR  CPU: 600 PLB: 200 OPB: 100 EBC: 100
600-nand         - NAND CPU: 600 PLB: 200 OPB: 100 EBC: 100
800-nor          - NOR  CPU: 800 PLB: 200 OPB: 100 EBC: 100
800-nand         - NAND CPU: 800 PLB: 200 OPB: 100 EBC: 100
1000-nor         - NOR  CPU:1000 PLB: 200 OPB: 100 EBC: 100
1000-nand        - NAND CPU:1000 PLB: 200 OPB: 100 EBC: 100
1066-nor         - NOR  CPU:1066 PLB: 266 OPB:  88 EBC:  88 ***
1066-nand        - NAND CPU:1066 PLB: 266 OPB:  88 EBC:  88
=> chip_config 600-nor
Using configuration:
600-nor          - NOR  CPU: 600 PLB: 200 OPB: 100 EBC: 100
done (dump via 'i2c md 52 0.1 10')
Reset the board for the changes to take effect

Other 4xx boards will be migrated to use this command soon
as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu>

3 files changed, 90 insertions, 197 deletions

diff --git a/board/amcc/canyonlands/Makefile b/board/amcc/canyonlands/Makefile
index 2aeead6..12f8a64 100644
--- a/board/amcc/canyonlands/Makefile
+++ b/board/amcc/canyonlands/Makefile
@@ -25,10 +25,11 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o
-COBJS	+= bootstrap.o
+COBJS-y	:= $(BOARD).o
+COBJS-$(CONFIG_CMD_CHIP_CONFIG) += chip_config.o
 SOBJS	:= init.o
 
+COBJS   := $(COBJS-y)
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
diff --git a/board/amcc/canyonlands/bootstrap.c b/board/amcc/canyonlands/bootstrap.c
deleted file mode 100644
index 6dc2cca..0000000
--- a/board/amcc/canyonlands/bootstrap.c
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- * (C) Copyright 2008
- * Stefan Roese, DENX Software Engineering, sr@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 <command.h>
-#include <i2c.h>
-#include <asm/io.h>
-
-/*
- * NOR and NAND boot options change bytes 5, 6, 8, 9, 11. The
- * values are independent of the rest of the clock settings.
- */
-
-#define NAND_COMPATIBLE	0x01
-#define NOR_COMPATIBLE  0x02
-
-#define I2C_EEPROM_ADDR 0x52
-
-static char *config_labels[] = {
-	"CPU: 600 PLB: 200 OPB: 100 EBC: 100",
-	"CPU: 800 PLB: 200 OPB: 100 EBC: 100",
-	"CPU:1000 PLB: 200 OPB: 100 EBC: 100",
-	"CPU:1066 PLB: 266 OPB:  88 EBC:  88",
-	NULL
-};
-
-static u8 boot_configs[][17] = {
-	{
-		(NAND_COMPATIBLE | NOR_COMPATIBLE),
-		0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0, 0x40, 0x08,
-		0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
-	},
-	{
-		(NAND_COMPATIBLE | NOR_COMPATIBLE),
-		0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0, 0x40, 0x08,
-		0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
-	},
-	{
-		(NAND_COMPATIBLE | NOR_COMPATIBLE),
-		0x86, 0x82, 0x96, 0x19, 0xb9, 0x80, 0x00, 0xa0, 0x40, 0x08,
-		0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
-	},
-	{
-		(NAND_COMPATIBLE | NOR_COMPATIBLE),
-		0x86, 0x80, 0xb3, 0x01, 0x9d, 0x80, 0x00, 0xa0, 0x40, 0x08,
-		0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
-	},
-	{
-		0,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-	}
-};
-
-/*
- * Bytes 5,6,8,9,11 change for NAND boot
- */
-#if 0
-/*
- * Values for 512 page size NAND chips, not used anymore, just
- * keep them here for reference
- */
-static u8 nand_boot[] = {
-	0x90, 0x01,  0xa0, 0x68, 0x58
-};
-#else
-/*
- * Values for 2k page size NAND chips
- */
-static u8 nand_boot[] = {
-	0x90, 0x01,  0xa0, 0xe8, 0x58
-};
-#endif
-
-static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
-	u8 *buf, b_nand;
-	int x, y, nbytes, selcfg;
-	extern char console_buffer[];
-
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
-
-	if ((strcmp(argv[1], "nor") != 0) &&
-	    (strcmp(argv[1], "nand") != 0)) {
-		printf("Unsupported boot-device - only nor|nand support\n");
-		return 1;
-	}
-
-	/* set the nand flag based on provided input */
-	if ((strcmp(argv[1], "nand") == 0))
-		b_nand = 1;
-	else
-		b_nand = 0;
-
-	printf("Available configurations: \n\n");
-
-	if (b_nand) {
-		for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
-			/* filter on nand compatible */
-			if (boot_configs[x][0] & NAND_COMPATIBLE) {
-				printf(" %d - %s\n", (y+1), config_labels[x]);
-				y++;
-			}
-		}
-	} else {
-		for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
-			/* filter on nor compatible */
-			if (boot_configs[x][0] & NOR_COMPATIBLE) {
-				printf(" %d - %s\n", (y+1), config_labels[x]);
-				y++;
-			}
-		}
-	}
-
-	do {
-		nbytes = readline(" Selection [1-x / quit]: ");
-
-		if (nbytes) {
-			if (strcmp(console_buffer, "quit") == 0)
-				return 0;
-			selcfg = simple_strtol(console_buffer, NULL, 10);
-			if ((selcfg < 1) || (selcfg > y))
-				nbytes = 0;
-		}
-	} while (nbytes == 0);
-
-
-	y = (selcfg - 1);
-
-	for (x = 0; boot_configs[x][0] != 0; x++) {
-		if (b_nand) {
-			if (boot_configs[x][0] & NAND_COMPATIBLE) {
-				if (y > 0)
-					y--;
-				else if (y < 1)
-					break;
-			}
-		} else {
-			if (boot_configs[x][0] & NOR_COMPATIBLE) {
-				if (y > 0)
-					y--;
-				else if (y < 1)
-					break;
-			}
-		}
-	}
-
-	buf = &boot_configs[x][1];
-
-	if (b_nand) {
-		buf[5] = nand_boot[0];
-		buf[6] = nand_boot[1];
-		buf[8] = nand_boot[2];
-		buf[9] = nand_boot[3];
-		buf[11] = nand_boot[4];
-	}
-
-	if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0)
-		printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR);
-	udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
-
-	printf("Done\n");
-	printf("Please power-cycle the board for the changes to take effect\n");
-
-	return 0;
-}
-
-U_BOOT_CMD(
-	bootstrap,	2,	0,	do_bootstrap,
-	"program the I2C bootstrap EEPROM",
-	"<nand|nor> - strap to boot from NAND or NOR flash"
-);
diff --git a/board/amcc/canyonlands/chip_config.c b/board/amcc/canyonlands/chip_config.c
new file mode 100644
index 0000000..e46f4d8
--- /dev/null
+++ b/board/amcc/canyonlands/chip_config.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2008-2009
+ * Stefan Roese, DENX Software Engineering, sr@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 <asm/ppc4xx_config.h>
+
+struct ppc4xx_config ppc4xx_config_val[] = {
+	{
+		"600-nor", "NOR  CPU: 600 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0,
+			0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"600-nand", "NAND CPU: 600 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x80, 0xce, 0x1f, 0x79, 0x90, 0x01, 0xa0,
+			0xa0, 0xe8, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"800-nor", "NOR  CPU: 800 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0,
+			0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"800-nand", "NAND CPU: 800 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x80, 0xba, 0x14, 0x99, 0x90, 0x01, 0xa0,
+			0xa0, 0xe8, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"1000-nor", "NOR  CPU:1000 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x82, 0x96, 0x19, 0xb9, 0x80, 0x00, 0xa0,
+			0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"1000-nand", "NAND CPU:1000 PLB: 200 OPB: 100 EBC: 100",
+		{
+			0x86, 0x82, 0x96, 0x19, 0xb9, 0x90, 0x01, 0xa0,
+			0xa0, 0xe8, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"1066-nor", "NOR  CPU:1066 PLB: 266 OPB:  88 EBC:  88",
+		{
+			0x86, 0x80, 0xb3, 0x01, 0x9d, 0x80, 0x00, 0xa0,
+			0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+	{
+		"1066-nand", "NAND CPU:1066 PLB: 266 OPB:  88 EBC:  88",
+		{
+			0x86, 0x80, 0xb3, 0x01, 0x9d, 0x90, 0x01, 0xa0,
+			0xa0, 0xe8, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
+		}
+	},
+};
+
+int ppc4xx_config_count = ARRAY_SIZE(ppc4xx_config_val);