board/amcc/acadia/cmd_acadia.c

   1 /*
   2  * (C) Copyright 2007
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  *
  23  */
  24
  25 #include <common.h>
  26 #include <command.h>
  27 #include <i2c.h>
  28
  29 static u8 boot_267_nor[] = {
  30         0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00,
  31         0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
  32         0x00, 0x00, 0x00, 0x00
  33 };
  34
  35 static u8 boot_267_nand[] = {
  36         0xd0, 0x38, 0xc3, 0x50, 0x13, 0x88, 0x8e, 0x00,
  37         0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
  38         0x00, 0x00, 0x00, 0x00
  39 };
  40
  41 static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  42 {
  43         u8 chip;
  44         u8 *buf;
  45         int cpu_freq;
  46
  47         if (argc < 3)
  48                 return cmd_usage(cmdtp);
  49
  50         cpu_freq = simple_strtol(argv[1], NULL, 10);
  51         if (cpu_freq != 267) {
  52                 printf("Unsupported cpu-frequency - only 267 supported\n");
  53                 return 1;
  54         }
  55
  56         /* use 0x50 as I2C EEPROM address for now */
  57         chip = 0x50;
  58
  59         if ((strcmp(argv[2], "nor") != 0) &&
  60             (strcmp(argv[2], "nand") != 0)) {
  61                 printf("Unsupported boot-device - only nor|nand support\n");
  62                 return 1;
  63         }
  64
  65         if (strcmp(argv[2], "nand") == 0) {
  66                 switch (cpu_freq) {
  67                 case 267:
  68                         buf = boot_267_nand;
  69                         break;
  70                 default:
  71                         break;
  72                 }
  73         } else {
  74                 switch (cpu_freq) {
  75                 case 267:
  76                         buf = boot_267_nor;
  77                         break;
  78                 default:
  79                         break;
  80                 }
  81         }
  82
  83         if (i2c_write(chip, 0, 1, buf, 16) != 0)
  84                 printf("Error writing to EEPROM at address 0x%x\n", chip);
  85         udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
  86         if (i2c_write(chip, 0x10, 1, buf+16, 4) != 0)
  87                 printf("Error2 writing to EEPROM at address 0x%x\n", chip);
  88
  89         printf("Done\n");
  90         printf("Please power-cycle the board for the changes to take effect\n");
  91
  92         return 0;
  93 }
  94
  95 U_BOOT_CMD(
  96         bootstrap,      3,      0,      do_bootstrap,
  97         "program the I2C bootstrap EEPROM",
  98         "<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM"
  99 );