mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 01:48:52 +09:00
212 lines
4.3 KiB
C
212 lines
4.3 KiB
C
/*
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* (C) Copyright 2005
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* Ladislav Michl, 2N Telekomunikace, michl@2n.cz
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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 modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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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* Some code shamelessly stolen back from Robin Getz.
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*/
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#define DEBUG
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#include <common.h>
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#include <exports.h>
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#include "../drivers/smc91111.h"
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#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
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static u16 read_eeprom_reg(u16 reg)
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{
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int timeout;
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SMC_SELECT_BANK(2);
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SMC_outw(reg, PTR_REG);
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SMC_SELECT_BANK(1);
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SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
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CTL_REG);
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timeout = 100;
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while((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
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udelay(100);
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if (timeout == 0) {
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printf("Timeout Reading EEPROM register %02x\n", reg);
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return 0;
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}
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return SMC_inw (GP_REG);
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}
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static int write_eeprom_reg(u16 value, u16 reg)
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{
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int timeout;
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SMC_SELECT_BANK(2);
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SMC_outw(reg, PTR_REG);
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SMC_SELECT_BANK(1);
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SMC_outw(value, GP_REG);
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SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
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timeout = 100;
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while ((SMC_inw(CTL_REG) & CTL_STORE) && --timeout)
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udelay (100);
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if (timeout == 0) {
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printf("Timeout Writing EEPROM register %02x\n", reg);
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return 0;
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}
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return 1;
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}
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static int write_data(u16 *buf, int len)
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{
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u16 reg = 0x23;
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while (len--)
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write_eeprom_reg(*buf++, reg++);
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return 0;
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}
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static int verify_macaddr(char *s)
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{
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u16 reg;
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int i, err = 0;
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printf("MAC Address: ");
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err = i = 0;
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for (i = 0; i < 3; i++) {
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reg = read_eeprom_reg(0x20 + i);
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printf("%02x:%02x%c", reg & 0xff, reg >> 8, i != 2 ? ':' : '\n');
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if (s)
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err |= reg != ((u16 *)s)[i];
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}
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return err ? 0 : 1;
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}
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static int set_mac(char *s)
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{
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int i;
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char *e, eaddr[6];
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/* turn string into mac value */
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for (i = 0; i < 6; i++) {
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eaddr[i] = simple_strtoul(s, &e, 16);
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s = (*e) ? e+1 : e;
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}
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for (i = 0; i < 3; i++)
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write_eeprom_reg(*(((u16 *)eaddr) + i), 0x20 + i);
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return 0;
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}
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static int parse_element(char *s, unsigned char *buf, int len)
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{
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int cnt;
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char *p, num[3];
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unsigned char id;
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id = simple_strtoul(s, &p, 16);
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if (*p++ != ':')
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return -1;
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cnt = 2;
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num[2] = 0;
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for (; *p; p += 2) {
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if (p[1] == 0)
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return -2;
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if (cnt + 3 > len)
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return -3;
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num[0] = p[0];
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num[1] = p[1];
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buf[cnt++] = simple_strtoul(num, NULL, 16);
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}
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buf[0] = id;
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buf[1] = cnt - 2;
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return cnt;
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}
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int eeprom(int argc, char *argv[])
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{
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int i, len, ret;
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unsigned char buf[58], *p;
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app_startup(argv);
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if (get_version() != XF_VERSION) {
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printf("Wrong XF_VERSION.\n");
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printf("Application expects ABI version %d\n", XF_VERSION);
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printf("Actual U-Boot ABI version %d\n", (int)get_version());
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return 1;
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}
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if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
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printf("SMSC91111 not found.\n");
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return 2;
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}
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/* Called without parameters - print MAC address */
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if (argc < 2) {
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verify_macaddr(NULL);
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return 0;
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}
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/* Print help message */
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if (argv[1][1] == 'h') {
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printf("VoiceBlue EEPROM writer\n");
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printf("Built: %s at %s\n", __DATE__ , __TIME__ );
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printf("Usage:\n\t<mac_address> [<element_1>] [<...>]\n");
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return 0;
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}
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/* Try to parse information elements */
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len = sizeof(buf);
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p = buf;
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for (i = 2; i < argc; i++) {
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ret = parse_element(argv[i], p, len);
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switch (ret) {
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case -1:
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printf("Element %d: malformed\n", i - 1);
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return 3;
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case -2:
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printf("Element %d: odd character count\n", i - 1);
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return 3;
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case -3:
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printf("Out of EEPROM memory\n");
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return 3;
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default:
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p += ret;
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len -= ret;
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}
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}
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/* First argument (MAC) is mandatory */
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set_mac(argv[1]);
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if (verify_macaddr(argv[1])) {
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printf("*** MAC address does not match! ***\n");
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return 4;
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}
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while (len--)
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*p++ = 0;
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write_data((u16 *)buf, sizeof(buf) >> 1);
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return 0;
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}
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