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 #ifdef CONFIG_CMD_EEPROM
  56         ret = eeprom_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
  57                           CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
  58                           cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
  59 #else
  60         ret = i2c_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
  61                        CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
  62                        1, cur_config, CONFIG_4xx_CONFIG_BLOCKSIZE);
  63 #endif
  64         if (ret) {
  65                 printf("Error reading EEPROM at addr 0x%x\n",
  66                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  67                 return -1;
  68         }
  69
  70         /*
  71          * Search the current configuration
  72          */
  73         for (i = 0; i < ppc4xx_config_count; i++) {
  74                 if (memcmp(cur_config, ppc4xx_config_val[i].val,
  75                            CONFIG_4xx_CONFIG_BLOCKSIZE) == 0)
  76                         cur_config_nr = i;
  77         }
  78
  79         if (cur_config_nr == -1) {
  80                 printf("Warning: The I2C bootstrap values don't match any"
  81                        " of the available options!\n");
  82                 printf("I2C bootstrap EEPROM values are (I2C address 0x%02x):\n",
  83                         CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  84                 for (i = 0; i < CONFIG_4xx_CONFIG_BLOCKSIZE; i++) {
  85                         printf("%02x ", cur_config[i]);
  86                 }
  87                 printf("\n");
  88         }
  89
  90         if (argc < 2) {
  91                 printf("Available configurations (I2C address 0x%02x):\n",
  92                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
  93                 print_configs(cur_config_nr);
  94                 return 0;
  95         }
  96
  97         for (i = 0; i < ppc4xx_config_count; i++) {
  98                 /*
  99                  * Search for configuration name/label
 100                  */
 101                 if (strcmp(argv[1], ppc4xx_config_val[i].label) == 0) {
 102                         printf("Using configuration:\n%-16s - %s\n",
 103                                ppc4xx_config_val[i].label,
 104                                ppc4xx_config_val[i].description);
 105
 106 #ifdef CONFIG_CMD_EEPROM
 107                         ret = eeprom_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 108                                            CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
 109                                            ppc4xx_config_val[i].val,
 110                                            CONFIG_4xx_CONFIG_BLOCKSIZE);
 111 #else
 112                         ret = i2c_write(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 113                                         CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,
 114                                         1, ppc4xx_config_val[i].val,
 115                                         CONFIG_4xx_CONFIG_BLOCKSIZE);
 116 #endif
 117                         udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
 118                         if (ret) {
 119                                 printf("Error updating EEPROM at addr 0x%x\n",
 120                                        CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR);
 121                                 return -1;
 122                         }
 123
 124                         printf("done (dump via 'i2c md %x 0.1 %x')\n",
 125                                CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
 126                                CONFIG_4xx_CONFIG_BLOCKSIZE);
 127                         printf("Reset the board for the changes to"
 128                                " take effect\n");
 129                         return 0;
 130                 }
 131         }
 132
 133         printf("Configuration %s not found!\n", argv[1]);
 134         print_configs(cur_config_nr);
 135         return -1;
 136 }
 137
 138 U_BOOT_CMD(
 139         chip_config,    2,      0,      do_chip_config,
 140         "program the I2C bootstrap EEPROM",
 141         "[config-label]"
 142 );