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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 <cbfs.h>
#include <console/console.h>
#include <gpio.h>
#include <soc/sdram.h>
#include <string.h>
#include <types.h>
static const char *sdram_configs[] = {
[0] = "sdram-lpddr3-hynix-4GB",
[3] = "sdram-lpddr3-samsung-2GB-24EB",
[4] = "sdram-lpddr3-micron-2GB",
[5] = "sdram-lpddr3-samsung-4GB-04EB",
[6] = "sdram-lpddr3-micron-4GB",
};
static struct rk3399_sdram_params params;
enum dram_speeds {
dram_800MHz = 800,
dram_928MHz = 928,
};
static enum dram_speeds get_sdram_target_mhz(void)
{
if (IS_ENABLED(CONFIG_BOARD_GOOGLE_BOB) && board_id() < 4)
return dram_800MHz;
return dram_928MHz;
}
const struct rk3399_sdram_params *get_sdram_config()
{
char config_file[64];
uint32_t ramcode;
ramcode = ram_code();
if (ramcode >= ARRAY_SIZE(sdram_configs) ||
!snprintf(config_file, sizeof(config_file), "%s-%d",
sdram_configs[ramcode], get_sdram_target_mhz()) ||
(cbfs_boot_load_struct(config_file, ¶ms,
sizeof(params)) != sizeof(params)))
die("Cannot load SDRAM parameter file!");
return ¶ms;
}
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