80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
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/*
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* (C) Copyright 2003
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* Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.de
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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/*****************************************************************************
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* read "factory" part of EEPROM and set some environment variables
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*****************************************************************************/
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void read_factory_r (void)
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{
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/* read 'factory' part of EEPROM */
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uchar buf[81];
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uchar *p;
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uint length;
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uint addr;
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uint len;
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/* get length first */
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addr = CFG_FACT_OFFSET;
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if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, 2)) {
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bailout:
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printf ("cannot read factory configuration\n");
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printf ("be sure to set ethaddr yourself!\n");
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return;
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}
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length = buf[0] + (buf[1] << 8);
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addr += 2;
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/* sanity check */
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if (length < 20 || length > CFG_FACT_SIZE - 2)
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goto bailout;
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/* read lines */
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while (length > 0) {
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/* read one line */
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len = length > 80 ? 80 : length;
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if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, len))
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goto bailout;
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/* mark end of buffer */
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buf[len] = 0;
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/* search end of line */
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for (p = buf; *p && *p != 0x0a; p++);
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if (!*p)
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goto bailout;
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*p++ = 0;
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/* advance to next line start */
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length -= p - buf;
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addr += p - buf;
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/*printf ("%s\n", buf); */
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/* search for our specific entry */
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if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) {
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setenv ("ethaddr", (char *)(buf + 19));
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} else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) {
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setenv ("serial#", (char *)(buf + 15));
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} else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) {
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setenv ("board_id", (char *)(buf + 13));
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}
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}
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}
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