| /* |
| * 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 <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[] = { |
| |
| /* Samsung K4E6E304EB-EGCE */ |
| [0] = "sdram-lpddr3-generic-4GB", |
| |
| /* Hynix H9CCNNNBJTALAR */ |
| [1] = "sdram-lpddr3-generic-4GB", |
| |
| /* Samsung K4E8E324EB-EGCF */ |
| [3] = "sdram-lpddr3-generic-2GB", |
| |
| /* Micron MT52L256M32D1PF */ |
| [4] = "sdram-lpddr3-generic-2GB", |
| |
| /* Samsung K4E6E304EB-EGCE, duplicate to 0 */ |
| [5] = "sdram-lpddr3-generic-4GB", |
| |
| /* Micron MT52L512M32D2PF */ |
| [6] = "sdram-lpddr3-generic-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_file(config_file, ¶ms, sizeof(params), |
| CBFS_TYPE_STRUCT) != sizeof(params))) |
| die("Cannot load SDRAM parameter file!"); |
| |
| return ¶ms; |
| } |