blob: 8134f1a36e8c8209bfcbd571e44545cb871d1f8d [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright 2017 Google Inc.
*
* 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 <baseboard/variants.h>
#include <gpio.h>
#include <variant/gpio.h>
/* DQ byte map */
static const u8 dq_map[][12] = {
{ 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 },
{ 0xCC, 0x33, 0x00, 0x33, 0xCC, 0x33,
0xCC, 0x00, 0xFF, 0x00, 0xFF, 0x00 }
};
/* DQS CPU<>DRAM map */
static const u8 dqs_map[][8] = {
{ 2, 3, 1, 0, 4, 7, 6, 5 },
{ 5, 6, 0, 3, 4, 7, 2, 1 },
};
/* Rcomp resistor */
static const u16 rcomp_resistor[] = { 200, 81, 162 };
/* Rcomp target */
static const u16 rcomp_target[] = { 100, 40, 40, 23, 40 };
void __attribute__((weak)) variant_memory_params(struct memory_params *p)
{
p->type = MEMORY_LPDDR3;
p->dq_map = dq_map;
p->dq_map_size = sizeof(dq_map);
p->dqs_map = dqs_map;
p->dqs_map_size = sizeof(dqs_map);
p->rcomp_resistor = rcomp_resistor;
p->rcomp_resistor_size = sizeof(rcomp_resistor);
p->rcomp_target = rcomp_target;
p->rcomp_target_size = sizeof(rcomp_target);
}
int __attribute__((weak)) variant_memory_sku(void)
{
gpio_t spd_gpios[] = {
GPIO_MEM_CONFIG_0,
GPIO_MEM_CONFIG_1,
GPIO_MEM_CONFIG_2,
GPIO_MEM_CONFIG_3,
};
return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
}