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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 int verify_macaddr(char *);
static int set_mac(char *);
int eeprom(int argc, char *argv[])
{
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;
}
if (argc != 2) {
printf("VoiceBlue EEPROM writer\n");
printf("Built: %s at %s\n", __DATE__ , __TIME__ );
printf("Usage:\n\t<mac_address>");
return 3;
}
set_mac(argv[1]);
if (verify_macaddr(argv[1])) {
printf("*** ERROR ***\n");
return 4;
}
return 0;
}
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 verify_macaddr(char *s)
{
u16 reg;
int i, err = 0;
printf("Verifying 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');
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;
}
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