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>

2 files changed, 48 insertions, 0 deletions

diff --git a/include/asm-ppc/ppc4xx_config.h b/include/asm-ppc/ppc4xx_config.h
new file mode 100644
index 0000000..49acb60
--- /dev/null
+++ b/include/asm-ppc/ppc4xx_config.h
@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2008-2009
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * (C) Copyright 2009
+ * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.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
+ *
+ */
+
+#ifndef __PPC4xx_CONFIG_H
+#define __PPC4xx_CONFIG_H
+
+#include <common.h>
+
+struct ppc4xx_config {
+	char label[16];
+	char description[64];
+	u8 val[CONFIG_4xx_CONFIG_BLOCKSIZE];
+};
+
+extern struct ppc4xx_config ppc4xx_config_val[];
+extern int ppc4xx_config_count;
+
+#endif /* __PPC4xx_CONFIG_H */
diff --git a/include/configs/canyonlands.h b/include/configs/canyonlands.h
index d22d411..217a8ee 100644
--- a/include/configs/canyonlands.h
+++ b/include/configs/canyonlands.h
@@ -330,6 +330,11 @@
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS	3
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS	10
 
+/* I2C bootstrap EEPROM */
+#define CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR	0x52
+#define CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET	0
+#define CONFIG_4xx_CONFIG_BLOCKSIZE		16
+
 /* I2C SYSMON (LM75, AD7414 is almost compatible)			*/
 #define CONFIG_DTT_LM75		1		/* ON Semi's LM75	*/
 #define CONFIG_DTT_AD7414	1		/* use AD7414		*/
@@ -442,6 +447,7 @@
 /*
  * Commands additional to the ones defined in amcc-common.h
  */
+#define CONFIG_CMD_CHIP_CONFIG
 #if defined(CONFIG_ARCHES)
 #define CONFIG_CMD_DTT
 #define CONFIG_CMD_PCI