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/*
* This file is part of the coreboot project.
*
* Copyright 2014 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 <arch/io.h>
#include <boardid.h>
#include <console/console.h>
#include <gpio.h>
#include <soc/sdram.h>
#include <string.h>
#include <types.h>
static struct rk3399_sdram_params sdram_configs[] = {
#include "sdram_inf/sdram-lpddr3-hynix-4GB-200.inc"
/* 666MHz, enable odt 120o */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-666.inc"
/* 800MHz, enable odt 120o */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-800.inc"
/* 666MHz, disable odt */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-666-no-odt.inc"
/* 800MHz, disable odt */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-800-no-odt.inc"
};
enum dram_speeds {
dram_200MHz = 0,
dram_666MHz = 1,
dram_800MHz = 2,
dram_666MHz_NO_ODT = 3,
dram_800MHz_NO_ODT = 4,
};
static enum dram_speeds get_sdram_index(void)
{
uint32_t id;
id = board_id();
if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN))
switch (id) {
case 0:
case 1:
case 2:
return dram_200MHz;
case 3:
return dram_666MHz_NO_ODT;
default:
return dram_800MHz;
}
if (IS_ENABLED(CONFIG_BOARD_GOOGLE_GRU))
switch (id) {
case 0:
return dram_800MHz_NO_ODT;
default:
return dram_800MHz;
}
}
const struct rk3399_sdram_params *get_sdram_config()
{
enum dram_speeds speed = get_sdram_index();
printk(BIOS_INFO, "Using SDRAM configuration for %d MHz\n",
sdram_configs[speed].ddr_freq / (1000 * 1000));
return &sdram_configs[speed];
}
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