arch/powerpc/cpu/ppc4xx/cmd_chip_config.c

   1 /*
   2  * (C) Copyright 2008-2009
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * (C) Copyright 2009
   6  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  *
  26  */
  27
  28 #include <common.h>
  29 #include <command.h>
  30 #include <i2c.h>
  31 #include <asm/ppc4xx_config.h>
  32 #include <asm/io.h>
  33
  34 static void print_configs(int cur_config_nr)
  35 {
  36         int i;
  37
  38         for (i = 0; i < ppc4xx_config_count; i++) {
  39                 printf("%-16s - %s", ppc4xx_config_val[i].label,
  40                        ppc4xx_config_val[i].description);
  41                 if (i == cur_config_nr)
  42                         printf(" ***");
  43                 printf("\n");
  44         }
  45
  46 }
  47
  48 static int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  49 {
  50         int i;
  51         int ret;
  52         int cur_config_nr = -1;
  53         u8 cur_config[CONFIG_4xx_CONFIG_BLOCKSIZE];
  54
  55         /*
  56          * First switch to correct I2C bus. This is I2C bus 0
  57          * for all currently available 4xx derivats.
  58          */
  59         I2C_SET_BUS(0);
  60
  61 #ifdef CONFIG_CMD_EEPROM
  62         ret = eeprom_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
  63                           CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
  64                           cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
  65 #else
  66         ret = i2c_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
  67                        CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
  68                        1, cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
  69 #endif
  70         if (ret) {
  71                 printf("Error reading EEPROM at addr 0x%x\n",
  72                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  73                 return -1;
  74         }
  75
  76         /*
  77          * Search the current configuration
  78          */
  79         for (i = 0; i < ppc4xx_config_count; i++) {
  80                 if (memcmp(cur_config, ppc4xx_config_val[i].val,
  81                            CONFIG_4xx_CONFIG_BLOCKSIZE) == 0)
  82                         cur_config_nr = i;
  83         }
  84
  85         if (cur_config_nr == -1) {
  86                 printf("Warning: The I2C bootstrap values don't match any"
  87                        " of the available options!\n");
  88                 printf("I2C bootstrap EEPROM values are (I2C address 0x%02x):\n",
  89                         CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  90                 for (i = 0; i < CONFIG_4xx_CONFIG_BLOCKSIZE; i++) {
  91                         printf("%02x ", cur_config[i]);
  92                 }
  93                 printf("\n");
  94         }
  95
  96         if (argc < 2) {
  97                 printf("Available configurations (I2C address 0x%02x):\n",
  98                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  99                 print_configs(cur_config_nr);
 100                 return 0;
 101         }
 102
 103         for (i = 0; i < ppc4xx_config_count; i++) {
 104                 /*
 105                  * Search for configuration name/label
 106                  */
 107                 if (strcmp(argv[1], ppc4xx_config_val[i].label) == 0) {
 108                         printf("Using configuration:\n%-16s - %s\n",
 109                                ppc4xx_config_val[i].label,
 110                                ppc4xx_config_val[i].description);
 111
 112 #ifdef CONFIG_CMD_EEPROM
 113                         ret = eeprom_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 114                                            CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
 115                                            ppc4xx_config_val[i].val,
 116                                            CONFIG_4xx_CONFIG_BLOCKSIZE);
 117 #else
 118                         ret = i2c_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 119                                         CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
 120                                         1, ppc4xx_config_val[i].val,
 121                                         CONFIG_4xx_CONFIG_BLOCKSIZE);
 122 #endif
 123                         udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
 124                         if (ret) {
 125                                 printf("Error updating EEPROM at addr 0x%x\n",
 126                                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
 127                                 return -1;
 128                         }
 129
 130                         printf("done (dump via 'i2c md %x 0.1 %x')\n",
 131                                CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 132                                CONFIG_4xx_CONFIG_BLOCKSIZE);
 133                         printf("Reset the board for the changes to"
 134                                " take effect\n");
 135                         return 0;
 136                 }
 137         }
 138
 139         printf("Configuration %s not found!\n", argv[1]);
 140         print_configs(cur_config_nr);
 141         return -1;
 142 }
 143
 144 U_BOOT_CMD(
 145         chip_config,    2,      0,      do_chip_config,
 146         "program the I2C bootstrap EEPROM",
 147         "[config-label]"
 148 );