LXR uboot/board/trizepsiv/eeprom.c

   1/*
   2 * (C) Copyright 2007
   3 * Stefano Babic, DENX Software Engineering, sbabic@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#include <common.h>
  25#include <command.h>
  26#include <dm9000.h>
  27
  28static int do_read_dm9000_eeprom ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) {
  29        unsigned int i;
  30        u8 data[2];
  31
  32        for (i=0; i < 0x40; i++) {
  33                if (!(i % 0x10))
  34                        printf("\n%08x:", i);
  35                dm9000_read_srom_word(i, data);
  36                printf(" %02x%02x", data[1], data[0]);
  37        }
  38        printf ("\n");
  39        return (0);
  40}
  41
  42static int do_write_dm9000_eeprom ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) {
  43        int offset,value;
  44
  45        if (argc < 4)
  46                return cmd_usage(cmdtp);
  47
  48        offset=simple_strtoul(argv[2],NULL,16);
  49        value=simple_strtoul(argv[3],NULL,16);
  50        if (offset > 0x40) {
  51                printf("Wrong offset : 0x%x\n",offset);
  52                return cmd_usage(cmdtp);
  53        }
  54        dm9000_write_srom_word(offset, value);
  55        return (0);
  56}
  57
  58int do_dm9000_eeprom ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) {
  59        if (argc < 2)
  60                return cmd_usage(cmdtp);
  61
  62        if (strcmp (argv[1],"read") == 0)
  63                return (do_read_dm9000_eeprom(cmdtp,flag,argc,argv));
  64        else if (strcmp (argv[1],"write") == 0)
  65                return (do_write_dm9000_eeprom(cmdtp,flag,argc,argv));
  66        else
  67                return cmd_usage(cmdtp);
  68}
  69
  70U_BOOT_CMD(
  71        dm9000ee,4,1,do_dm9000_eeprom,
  72        "Read/Write eeprom connected to Ethernet Controller",
  73        "\ndm9000ee write <word offset> <value> \n"
  74        "\tdm9000ee read \n"
  75        "\tword:\t\t00-02 : MAC Address\n"
  76        "\t\t\t03-07 : DM9000 Configuration\n"
  77        "\t\t\t08-63 : User data"
  78);
  79