static int __init rbtx4938_ethaddr_init(void)
{
#ifdef CONFIG_PCI
unsigned char dat[17];
unsigned char sum;
int i;
/* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
if (spi_eeprom_read(SPI_BUSNO, SEEPROM1_CS, 0, dat, sizeof(dat))) {
printk(KERN_ERR "seeprom: read error.\n");
return -ENODEV;
} else {
if (strcmp(dat, "MAC") != 0)
printk(KERN_WARNING "seeprom: bad signature.\n");
for (i = 0, sum = 0; i < sizeof(dat); i++)
sum += dat[i];
if (sum)
printk(KERN_WARNING "seeprom: bad checksum.\n");
}
tx4938_ethaddr_init(&dat[4], &dat[4 + 6]);
#endif /* CONFIG_PCI */
return 0;
}
ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len)
{
int offset;
int i;
ssize_t res;
offset = 0;
for (i=0;i<alen;i++) {
offset <<= 8;
offset |= addr[i];
}
#ifdef CONFIG_SYS_SC520_CDP_USE_SPI
res = spi_eeprom_read(1, offset, buffer, len);
#endif
#ifdef CONFIG_SYS_SC520_CDP_USE_MW
res = mw_eeprom_read(2, offset, buffer, len);
#endif
#if !defined(CONFIG_SYS_SC520_CDP_USE_SPI) && !defined(CONFIG_SYS_SC520_CDP_USE_MW)
res = 0;
#endif
return res;
}