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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015 Intel Corp.
* Copyright (C) 2017 Matt DeVillier
*
* 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.
*/
#include <console/console.h>
#include <mainboard/google/cyan/spd/spd_util.h>
/*
* 0b0000 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
* 0b0001 - 4GiB total - 2 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz
* 0b0010 - 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
* 0b0011 - 2GiB total - 1 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz
* 0b0100 - 4GiB total - 2 x 2GiB Samsung K4B4G1646E-BYK0 1600MHz
* 0b0101 - 4GiB total - 2 x 2GiB Micron MT41K256M16TW-107 1600MHz
* 0b0110 - 2GiB total - 1 x 2GiB Samsung K4B4G1646E-BYK0 1600MHz
* 0b0111 - 2GiB total - 1 x 2GiB Micron MT41K256M16TW-107 1600MHz
*/
int get_variant_spd_index(int ram_id, int *dual)
{
/* Determine if single or dual channel memory system */
/* RAMID1 is deterministic for cyan */
*dual = ((ram_id >> 1) & 0x1) ? 0 : 1;
/* Display the RAM type */
switch (ram_id) {
case 0:
printk(BIOS_DEBUG, "4GiB Samsung K4B4G1646Q-HYK0 1600MHz\n");
break;
case 1:
printk(BIOS_DEBUG, "4GiB Hynix H5TC4G63CFR-PBA 1600MHz\n");
break;
case 2:
printk(BIOS_DEBUG, "2GiB Samsung K4B4G1646Q-HYK0 1600MHz\n");
break;
case 3:
printk(BIOS_DEBUG, "2GiB Hynix H5TC4G63CFR-PBA 1600MHz\n");
break;
case 4:
printk(BIOS_DEBUG, "4GiB Samsung K4B4G1646E-BYK0 1600MHz\n");
break;
case 5:
printk(BIOS_DEBUG, "4GiB Micron MT41K256M16TW-107 1600MHz\n");
break;
case 6:
printk(BIOS_DEBUG, "2GiB Samsung K4B4G1646E-BYK0 1600MHz\n");
break;
case 7:
printk(BIOS_DEBUG, "2GiB Micron MT41K256M16TW-107 1600MHz\n");
break;
}
/* 1:1 mapping between ram_id and spd_index for cyan */
return ram_id;
}
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