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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.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/io.h>
#include <console/console.h>
#include <gpio.h>
#include <soc/sdram.h>
#include <string.h>
#include <types.h>
static struct rk3288_sdram_params sdram_configs[] = {
#include "sdram_inf/sdram-lpddr3-samsung-2GB.inc" /* ram_code = 0000 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0001 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0010 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0011 */
#include "sdram_inf/sdram-ddr3-samsung-2GB.inc" /* ram_code = 0100 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0101 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0110 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 0111 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1000 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1001 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1010 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1011 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1100 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1101 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1110 */
#include "sdram_inf/sdram-unused.inc" /* ram_code = 1111 */
};
#define GPIO_RAMCODE0 GPIO(8, A, 0)
#define GPIO_RAMCODE1 GPIO(8, A, 1)
#define GPIO_RAMCODE2 GPIO(8, A, 2)
#define GPIO_RAMCODE3 GPIO(8, A, 3)
u32 sdram_get_ram_code(void)
{
u32 code = 0;
gpio_input(GPIO_RAMCODE0);
gpio_input(GPIO_RAMCODE1);
gpio_input(GPIO_RAMCODE2);
gpio_input(GPIO_RAMCODE3);
code = gpio_get(GPIO_RAMCODE3) << 3
| gpio_get(GPIO_RAMCODE2) << 2
| gpio_get(GPIO_RAMCODE1) << 1
| gpio_get(GPIO_RAMCODE0) << 0;
return code;
}
const struct rk3288_sdram_params *get_sdram_config()
{
u32 ramcode = sdram_get_ram_code();
if (ramcode >= ARRAY_SIZE(sdram_configs)
|| sdram_configs[ramcode].dramtype == UNUSED)
die("Invalid RAMCODE.");
return &sdram_configs[ramcode];
}
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