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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Sage Electronic Engineering, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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.
*/
#include "AGESA.h"
#include "common.h"
#include <device/dram/ddr3.h>
#include <string.h>
#include <cbfs.h>
AGESA_STATUS common_ReadCbfsSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
#ifdef __PRE_RAM__
AGESA_READ_SPD_PARAMS *info = ConfigPtr;
size_t spd_file_length;
if (info->MemChannelId > CONFIG_AGESA_DDR3_CHANNEL_MAX)
return AGESA_ERROR;
if (info->SocketId != 0)
return AGESA_ERROR;
if (info->DimmId != 0)
return AGESA_ERROR;
char *spd_file;
spd_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "spd.bin", CBFS_TYPE_SPD_BIN, &spd_file_length);
if (!spd_file)
die("file [spd.bin] not found in CBFS");
printk(BIOS_DEBUG, "\nCBFS SPD file length = 0x%x bytes\n", (unsigned int)spd_file_length);
if (CONFIG_MULTIPLE_DDR_SPD) {
struct multi_spd_info *spd_info = (struct multi_spd_info *)info->Buffer;
printk(BIOS_DEBUG, "Multiple DDR SPD: using offset %d\n", spd_info->offset);
if (spd_info->offset > (spd_file_length / spd_info->size))
printk(BIOS_EMERG, "Multiple SPD offset is greater than SPD length\n");
else {
spd_file += spd_info->offset * spd_info->size;
spd_file_length = spd_info->size;
}
}
memcpy((char*)info->Buffer, spd_file, spd_file_length);
u16 crc = spd_ddr3_calc_crc(info->Buffer, spd_file_length);
if (crc == 0){
printk(BIOS_EMERG, "Error: Unable to calculate CRC on SPD\n");
return AGESA_UNSUPPORTED;
}
if (((info->Buffer[SPD_CRC_LO] == 0) && (info->Buffer[SPD_CRC_HI] == 0))
|| (info->Buffer[SPD_CRC_LO] != (crc & 0xff))
|| (info->Buffer[SPD_CRC_HI] != (crc >> 8))) {
printk(BIOS_WARNING, "SPD CRC %02x%02x is invalid, should be %04x\n",
info->Buffer[SPD_CRC_HI], info->Buffer[SPD_CRC_LO], crc);
info->Buffer[SPD_CRC_LO] = crc & 0xff;
info->Buffer[SPD_CRC_HI] = crc >> 8;
u16 i;
printk(BIOS_SPEW, "\nDisplay the SPD");
for (i = 0; i < spd_file_length; i++) {
if((i % 16) == 0x00)
printk(BIOS_SPEW, "\n%02x: ",i);
printk(BIOS_SPEW, "%02x ", info->Buffer[i]);
}
printk(BIOS_SPEW, "\n");
}
return AGESA_SUCCESS;
#else
return AGESA_UNSUPPORTED;
#endif
}
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