/* * (C) Copyright 2003 * Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.de * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> /***************************************************************************** * read "factory" part of EEPROM and set some environment variables *****************************************************************************/ void read_factory_r (void) { /* read 'factory' part of EEPROM */ uchar buf[81]; uchar *p; uint length; uint addr; uint len; /* get length first */ addr = CONFIG_SYS_FACT_OFFSET; if (eeprom_read (CONFIG_SYS_I2C_FACT_ADDR, addr, buf, 2)) { bailout: printf ("cannot read factory configuration\n"); printf ("be sure to set ethaddr yourself!\n"); return; } length = buf[0] + (buf[1] << 8); addr += 2; /* sanity check */ if (length < 20 || length > CONFIG_SYS_FACT_SIZE - 2) goto bailout; /* read lines */ while (length > 0) { /* read one line */ len = length > 80 ? 80 : length; if (eeprom_read (CONFIG_SYS_I2C_FACT_ADDR, addr, buf, len)) goto bailout; /* mark end of buffer */ buf[len] = 0; /* search end of line */ for (p = buf; *p && *p != 0x0a; p++); if (!*p) goto bailout; *p++ = 0; /* advance to next line start */ length -= p - buf; addr += p - buf; /*printf ("%s\n", buf); */ /* search for our specific entry */ if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) { setenv ("ethaddr", (char *)(buf + 19)); } else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) { setenv ("serial#", (char *)(buf + 15)); } else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) { setenv ("board_id", (char *)(buf + 13)); } } }