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/*
* (C) Copyright 2005
* Ladislav Michl, 2N Telekomunikace, michl@2n.cz
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Some code shamelessly stolen back from Robin Getz.
*/
#define DEBUG
#include <common.h>
#include <exports.h>
#include "../drivers/smc91111.h"
#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
static u16 read_eeprom_reg(u16 reg)
{
int timeout;
SMC_SELECT_BANK(2);
SMC_outw(reg, PTR_REG);
SMC_SELECT_BANK(1);
SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
CTL_REG);
timeout = 100;
while((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
udelay(100);
if (timeout == 0) {
printf("Timeout Reading EEPROM register %02x\n", reg);
return 0;
}
return SMC_inw (GP_REG);
}
static int write_eeprom_reg(u16 value, u16 reg)
{
int timeout;
SMC_SELECT_BANK(2);
SMC_outw(reg, PTR_REG);
SMC_SELECT_BANK(1);
SMC_outw(value, GP_REG);
SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
timeout = 100;
while ((SMC_inw(CTL_REG) & CTL_STORE) && --timeout)
udelay (100);
if (timeout == 0) {
printf("Timeout Writing EEPROM register %02x\n", reg);
return 0;
}
return 1;
}
static int write_data(u16 *buf, int len)
{
u16 reg = 0x23;
while (len--)
write_eeprom_reg(*buf++, reg++);
return 0;
}
static int verify_macaddr(char *s)
{
u16 reg;
int i, err = 0;
printf("MAC Address: ");
err = i = 0;
for (i = 0; i < 3; i++) {
reg = read_eeprom_reg(0x20 + i);
printf("%02x:%02x%c", reg & 0xff, reg >> 8, i != 2 ? ':' : '\n');
if (s)
err |= reg != ((u16 *)s)[i];
}
return err ? 0 : 1;
}
static int set_mac(char *s)
{
int i;
char *e, eaddr[6];
/* turn string into mac value */
for (i = 0; i < 6; i++) {
eaddr[i] = simple_strtoul(s, &e, 16);
s = (*e) ? e+1 : e;
}
for (i = 0; i < 3; i++)
write_eeprom_reg(*(((u16 *)eaddr) + i), 0x20 + i);
return 0;
}
static int parse_element(char *s, unsigned char *buf, int len)
{
int cnt;
char *p, num[3];
unsigned char id;
id = simple_strtoul(s, &p, 16);
if (*p++ != ':')
return -1;
cnt = 2;
num[2] = 0;
for (; *p; p += 2) {
if (p[1] == 0)
return -2;
if (cnt + 3 > len)
return -3;
num[0] = p[0];
num[1] = p[1];
buf[cnt++] = simple_strtoul(num, NULL, 16);
}
buf[0] = id;
buf[1] = cnt - 2;
return cnt;
}
int eeprom(int argc, char *argv[])
{
int i, len, ret;
unsigned char buf[58], *p;
app_startup(argv);
if (get_version() != XF_VERSION) {
printf("Wrong XF_VERSION.\n");
printf("Application expects ABI version %d\n", XF_VERSION);
printf("Actual U-Boot ABI version %d\n", (int)get_version());
return 1;
}
if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
printf("SMSC91111 not found.\n");
return 2;
}
/* Called without parameters - print MAC address */
if (argc < 2) {
verify_macaddr(NULL);
return 0;
}
/* Print help message */
if (argv[1][1] == 'h') {
printf("VoiceBlue EEPROM writer\n");
printf("Built: %s at %s\n", __DATE__ , __TIME__ );
printf("Usage:\n\t<mac_address> [<element_1>] [<...>]\n");
return 0;
}
/* Try to parse information elements */
len = sizeof(buf);
p = buf;
for (i = 2; i < argc; i++) {
ret = parse_element(argv[i], p, len);
switch (ret) {
case -1:
printf("Element %d: malformed\n", i - 1);
return 3;
case -2:
printf("Element %d: odd character count\n", i - 1);
return 3;
case -3:
printf("Out of EEPROM memory\n");
return 3;
default:
p += ret;
len -= ret;
}
}
/* First argument (MAC) is mandatory */
set_mac(argv[1]);
if (verify_macaddr(argv[1])) {
printf("*** MAC address does not match! ***\n");
return 4;
}
while (len--)
*p++ = 0;
write_data((u16 *)buf, sizeof(buf) >> 1);
return 0;
}
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