diff options
Diffstat (limited to 'src/mainboard/google/poppy/romstage.c')
| -rw-r--r-- | src/mainboard/google/poppy/romstage.c | 127 |
1 files changed, 105 insertions, 22 deletions
diff --git a/src/mainboard/google/poppy/romstage.c b/src/mainboard/google/poppy/romstage.c index 790e5ae833d3..2a6cd90ea752 100644 --- a/src/mainboard/google/poppy/romstage.c +++ b/src/mainboard/google/poppy/romstage.c @@ -13,37 +13,120 @@ * GNU General Public License for more details. */ +#include <assert.h> +#include <baseboard/variants.h> +#include <cbfs.h> +#include <console/console.h> #include <soc/romstage.h> #include <string.h> #include <fsp/soc_binding.h> -#include "spd/spd.h" +#define SPD_LEN 256 + +#define SPD_DRAM_TYPE 2 +#define SPD_DRAM_DDR3 0x0b +#define SPD_DRAM_LPDDR3 0xf1 +#define SPD_DENSITY_BANKS 4 +#define SPD_ADDRESSING 5 +#define SPD_ORGANIZATION 7 +#define SPD_BUS_DEV_WIDTH 8 +#define SPD_PART_OFF 128 +#define SPD_PART_LEN 18 +#define SPD_MANU_OFF 148 + +static void mainboard_print_spd_info(uint8_t spd[]) +{ + const int spd_banks[8] = { 8, 16, 32, 64, -1, -1, -1, -1 }; + const int spd_capmb[8] = { 1, 2, 4, 8, 16, 32, 64, 0 }; + const int spd_rows[8] = { 12, 13, 14, 15, 16, -1, -1, -1 }; + const int spd_cols[8] = { 9, 10, 11, 12, -1, -1, -1, -1 }; + const int spd_ranks[8] = { 1, 2, 3, 4, -1, -1, -1, -1 }; + const int spd_devw[8] = { 4, 8, 16, 32, -1, -1, -1, -1 }; + const int spd_busw[8] = { 8, 16, 32, 64, -1, -1, -1, -1 }; + char spd_name[SPD_PART_LEN+1] = { 0 }; + + int banks = spd_banks[(spd[SPD_DENSITY_BANKS] >> 4) & 7]; + int capmb = spd_capmb[spd[SPD_DENSITY_BANKS] & 7] * 256; + int rows = spd_rows[(spd[SPD_ADDRESSING] >> 3) & 7]; + int cols = spd_cols[spd[SPD_ADDRESSING] & 7]; + int ranks = spd_ranks[(spd[SPD_ORGANIZATION] >> 3) & 7]; + int devw = spd_devw[spd[SPD_ORGANIZATION] & 7]; + int busw = spd_busw[spd[SPD_BUS_DEV_WIDTH] & 7]; + + /* Module type */ + printk(BIOS_INFO, "SPD: module type is "); + switch (spd[SPD_DRAM_TYPE]) { + case SPD_DRAM_LPDDR3: + printk(BIOS_INFO, "LPDDR3\n"); + break; + default: + printk(BIOS_INFO, "Unknown (%02x)\n", spd[SPD_DRAM_TYPE]); + return; + } + + /* Module Part Number */ + memcpy(spd_name, &spd[SPD_PART_OFF], SPD_PART_LEN); + spd_name[SPD_PART_LEN] = 0; + printk(BIOS_INFO, "SPD: module part is %s\n", spd_name); + + printk(BIOS_INFO, + "SPD: banks %d, ranks %d, rows %d, columns %d, density %d Mb\n", + banks, ranks, rows, cols, capmb); + printk(BIOS_INFO, "SPD: device width %d bits, bus width %d bits\n", + devw, busw); + + if (capmb > 0 && busw > 0 && devw > 0 && ranks > 0) { + /* SIZE = DENSITY / 8 * BUS_WIDTH / SDRAM_WIDTH * RANKS */ + printk(BIOS_INFO, "SPD: module size is %u MB (per channel)\n", + capmb / 8 * busw / devw * ranks); + } +} + +static uintptr_t mainboard_get_spd_data(void) +{ + char *spd_file; + size_t spd_file_len; + int spd_index; + + spd_index = variant_memory_sku(); + assert(spd_index >= 0); + printk(BIOS_INFO, "SPD index %d\n", spd_index); + + /* Load SPD data from CBFS */ + spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD, + &spd_file_len); + if (!spd_file) + die("SPD data not found."); + + /* make sure we have at least one SPD in the file. */ + if (spd_file_len < SPD_LEN) + die("Missing SPD data."); + + /* Make sure we did not overrun the buffer */ + if (spd_file_len < ((spd_index + 1) * SPD_LEN)) { + printk(BIOS_ERR, "SPD index override to 1 - old hardware?\n"); + spd_index = 1; + } + + spd_index *= SPD_LEN; + mainboard_print_spd_info((uint8_t *)(spd_file + spd_index)); + + return (uintptr_t)(spd_file + spd_index); +} void mainboard_memory_init_params(FSPM_UPD *mupd) { FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig; - /* DQ byte map */ - const u8 dq_map[2][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 */ - const u8 dqs_map[2][8] = { - { 2, 3, 1, 0, 4, 7, 6, 5 }, - { 5, 6, 0, 3, 4, 7, 2, 1 }, - }; - /* Rcomp resistor */ - const u16 rcomp_resistor[] = { 200, 81, 162 }; - /* Rcomp target */ - const u16 rcomp_target[] = { 100, 40, 40, 23, 40 }; - - memcpy(&mem_cfg->DqByteMapCh0, dq_map, sizeof(dq_map)); - memcpy(&mem_cfg->DqsMapCpu2DramCh0, dqs_map, sizeof(dqs_map)); - memcpy(&mem_cfg->RcompResistor, rcomp_resistor, sizeof(rcomp_resistor)); - memcpy(&mem_cfg->RcompTarget, rcomp_target, sizeof(rcomp_target)); + struct memory_params p; + + variant_memory_params(&p); + + memcpy(&mem_cfg->DqByteMapCh0, p.dq_map, p.dq_map_size); + memcpy(&mem_cfg->DqsMapCpu2DramCh0, p.dqs_map, p.dqs_map_size); + memcpy(&mem_cfg->RcompResistor, p.rcomp_resistor, + p.rcomp_resistor_size); + memcpy(&mem_cfg->RcompTarget, p.rcomp_target, p.rcomp_target_size); mem_cfg->MemorySpdPtr00 = mainboard_get_spd_data(); mem_cfg->MemorySpdPtr10 = mem_cfg->MemorySpdPtr00; |