board/kup/common/load_sernum_ethaddr.c

   1 /*
   2  * (C) Copyright 2000-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@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 <mpc8xx.h>
  26
  27 /*-----------------------------------------------------------------------
  28  * Process Hardware Information Block:
  29  *
  30  * If we boot on a system fresh from factory, check if the Hardware
  31  * Information Block exists and save the information it contains.
  32  *
  33  * The KUP Hardware Information Block is defined as
  34  * follows:
  35  * - located in first flash bank
  36  * - starts at offset CONFIG_SYS_HWINFO_OFFSET
  37  * - size CONFIG_SYS_HWINFO_SIZE
  38  *
  39  * Internal structure:
  40  * - sequence of ASCII character lines
  41  * - fields separated by <CR><LF>
  42  * - last field terminated by NUL character (0x00)
  43  *
  44  * Fields in Hardware Information Block:
  45  * 1) Module Type
  46  * 2) MAC Address
  47  * 3) ....
  48  */
  49
  50
  51 #define ETHADDR_TOKEN "ethaddr="
  52 #define LCD_TOKEN "lcd="
  53
  54 void load_sernum_ethaddr (void)
  55 {
  56         unsigned char *hwi;
  57         char *var;
  58         unsigned char hwi_stack[CONFIG_SYS_HWINFO_SIZE];
  59         char *p;
  60
  61         hwi = (unsigned char *) (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_HWINFO_OFFSET);
  62         if (*((unsigned long *) hwi) != (unsigned long) CONFIG_SYS_HWINFO_MAGIC) {
  63                 printf ("HardwareInfo not found!\n");
  64                 return;
  65         }
  66         memcpy (hwi_stack, hwi, CONFIG_SYS_HWINFO_SIZE);
  67
  68         /*
  69          ** ethaddr
  70          */
  71         var = strstr ((char *)hwi_stack, ETHADDR_TOKEN);
  72         if (var) {
  73                 var += sizeof (ETHADDR_TOKEN) - 1;
  74                 p = strchr (var, '\r');
  75                 if ((unsigned char *)p < hwi + CONFIG_SYS_HWINFO_SIZE) {
  76                         *p = '\0';
  77                         setenv ("ethaddr", var);
  78                         *p = '\r';
  79                 }
  80         }
  81         /*
  82          ** lcd
  83          */
  84         var = strstr ((char *)hwi_stack, LCD_TOKEN);
  85         if (var) {
  86                 var += sizeof (LCD_TOKEN) - 1;
  87                 p = strchr (var, '\r');
  88                 if ((unsigned char *)p < hwi + CONFIG_SYS_HWINFO_SIZE) {
  89                         *p = '\0';
  90                         setenv ("lcd", var);
  91                         *p = '\r';
  92                 }
  93         }
  94 }