AGESA_STATUS
AmdMemoryReadSPD (
IN UINT32 Func,
IN UINTN Data,
IN OUT AGESA_READ_SPD_PARAMS *SpdData
)
{
UINT8 SmBusAddress = 0;
UINTN Index;
UINTN MaxSocket = ARRAY_SIZE(SpdAddrLookup);
for (Index = 0; Index < MaxSocket; Index ++) {
if ((SpdData->SocketId == SpdAddrLookup[Index].SocketId) &&
(SpdData->MemChannelId == SpdAddrLookup[Index].MemChannelId) &&
(SpdData->DimmId == SpdAddrLookup[Index].DimmId)) {
SmBusAddress = SpdAddrLookup[Index].SmbusAddress;
break;
}
}
if (SmBusAddress == 0)
return AGESA_ERROR;
int err = smbus_readSpd(SmBusAddress, (char *) SpdData->Buffer, 128);
if (err)
return AGESA_ERROR;
return AGESA_SUCCESS;
}
int sema_send_alive(void)
{
const u8 i_am_alive[] = { 0x03 };
int i, j = 0;
char one_spd_byte;
/* Fake read just to setup SMBUS controller. */
if (ENV_ROMSTAGE)
smbus_readSpd(0xa0, &one_spd_byte, 1);
/* Notify the SMC we're alive and kicking, or after a while it will
* effect a power cycle and switch to the alternate BIOS chip.
* Should be done as late as possible. */
printk(BIOS_CRIT, "Sending BIOS alive message... ");
do {
i = smb_write_blk(0x50, 0x25, sizeof(i_am_alive), i_am_alive);
early_mdelay(25);
} while ((++j < RETRY_COUNT) && i);
if (j == RETRY_COUNT) {
printk(BIOS_INFO, "failed\n");
return -1;
}
printk(BIOS_CRIT, "took %d tries\n", j);
return 0;
}
/**
* Gets the SMBus address for an SPD from the array in devicetree.cb
* then read the SPD into the supplied buffer.
*/
AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info)
{
UINT8 spdAddress;
ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2));
if (dev == NULL)
return AGESA_ERROR;
ROMSTAGE_CONST struct northbridge_amd_agesa_family15_config *config = dev->chip_info;
if (config == NULL)
return AGESA_ERROR;
if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup))
return AGESA_ERROR;
if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0]))
return AGESA_ERROR;
if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0]))
return AGESA_ERROR;
spdAddress = config->spdAddrLookup
[info->SocketId][info->MemChannelId][info->DimmId];
if (spdAddress == 0)
return AGESA_ERROR;
int err = smbus_readSpd(spdAddress, (void *) info->Buffer, 256);
if (err)
return AGESA_ERROR;
return AGESA_SUCCESS;
}
