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/*
* (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
*
*/
#include <common.h>
#include <command.h>
#include <i2c.h>
#include <asm/ppc4xx_config.h>
#include <asm/io.h>
static void print_configs(int cur_config_nr)
{
int i;
for (i = 0; i < ppc4xx_config_count; i++) {
printf("%-16s - %s", ppc4xx_config_val[i].label,
ppc4xx_config_val[i].description);
if (i == cur_config_nr)
printf(" ***");
printf("\n");
}
}
static int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int i;
int ret;
int cur_config_nr = -1;
u8 cur_config[CONFIG_4xx_CONFIG_BLOCKSIZE];
/*
* First switch to correct I2C bus. This is I2C bus 0
* for all currently available 4xx derivats.
*/
I2C_SET_BUS(0);
#ifdef CONFIG_CMD_EEPROM
ret = eeprom_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
#else
ret = i2c_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
1, cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
#endif
if (ret) {
printf("Error reading EEPROM at addr 0x%x\n",
CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
return -1;
}
/*
* Search the current configuration
*/
for (i = 0; i < ppc4xx_config_count; i++) {
if (memcmp(cur_config, ppc4xx_config_val[i].val,
CONFIG_4xx_CONFIG_BLOCKSIZE) == 0)
cur_config_nr = i;
}
if (cur_config_nr == -1) {
printf("Warning: The I2C bootstrap values don't match any"
" of the available options!\n");
printf("I2C bootstrap EEPROM values are (I2C address 0x%02x):\n",
CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
for (i = 0; i < CONFIG_4xx_CONFIG_BLOCKSIZE; i++) {
printf("%02x ", cur_config[i]);
}
printf("\n");
}
if (argc < 2) {
printf("Available configurations (I2C address 0x%02x):\n",
CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
print_configs(cur_config_nr);
return 0;
}
for (i = 0; i < ppc4xx_config_count; i++) {
/*
* Search for configuration name/label
*/
if (strcmp(argv[1], ppc4xx_config_val[i].label) == 0) {
printf("Using configuration:\n%-16s - %s\n",
ppc4xx_config_val[i].label,
ppc4xx_config_val[i].description);
#ifdef CONFIG_CMD_EEPROM
ret = eeprom_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
ppc4xx_config_val[i].val,
CONFIG_4xx_CONFIG_BLOCKSIZE);
#else
ret = i2c_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
1, ppc4xx_config_val[i].val,
CONFIG_4xx_CONFIG_BLOCKSIZE);
#endif
udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
if (ret) {
printf("Error updating EEPROM at addr 0x%x\n",
CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
return -1;
}
printf("done (dump via 'i2c md %x 0.1 %x')\n",
CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
CONFIG_4xx_CONFIG_BLOCKSIZE);
printf("Reset the board for the changes to"
" take effect\n");
return 0;
}
}
printf("Configuration %s not found!\n", argv[1]);
print_configs(cur_config_nr);
return -1;
}
U_BOOT_CMD(
chip_config, 2, 0, do_chip_config,
"program the I2C bootstrap EEPROM",
"[config-label]"
);
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