diff options
Diffstat (limited to 'src/mainboard/google/poppy/romstage.c')
| -rw-r--r-- | src/mainboard/google/poppy/romstage.c | 118 |
1 files changed, 75 insertions, 43 deletions
diff --git a/src/mainboard/google/poppy/romstage.c b/src/mainboard/google/poppy/romstage.c index 2a6cd90ea7..6bb4076d0d 100644 --- a/src/mainboard/google/poppy/romstage.c +++ b/src/mainboard/google/poppy/romstage.c @@ -22,20 +22,52 @@ #include <fsp/soc_binding.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[]) +/* Offset to identify DRAM type. */ +#define SPD_DRAM_TYPE_OFF 2 +#define SPD_DRAM_LPDDR3 0xf1 +#define SPD_DRAM_DDR4 0x0c + +/* Length of SPD data. */ +#define SPD_LEN_LPDDR3 256 +#define SPD_LEN_DDR4 512 + +/* Fields that are common across different memory types. */ +#define SPD_DENSITY_BANKS_OFF 4 +#define SPD_ADDRESSING_OFF 5 +#define SPD_PART_LEN 18 + +/* Fields that are different depending upon memory type. */ +#define SPD_ORG_OFF_LPDDR3 7 +#define SPD_BUSW_OFF_LPDDR3 8 +#define SPD_PART_OFF_LPDDR3 128 + +#define SPD_ORG_OFF_DDR4 12 +#define SPD_BUSW_OFF_DDR4 13 +#define SPD_PART_OFF_DDR4 329 + +#define SPD_INFO(_type) \ + [MEMORY_##_type] = { \ + .str = #_type, \ + .type_code = SPD_DRAM_##_type, \ + .len = SPD_LEN_##_type, \ + .org_off = SPD_ORG_OFF_##_type, \ + .busw_off = SPD_BUSW_OFF_##_type, \ + .part_off = SPD_PART_OFF_##_type, \ + } + +static const struct dram_info { + const char *str; + uint16_t type_code; + uint16_t len; + uint16_t org_off; + uint16_t busw_off; + uint16_t part_off; +} spd_info[MEMORY_COUNT] = { + SPD_INFO(LPDDR3), + SPD_INFO(DDR4), +}; + +static void mainboard_print_spd_info(const uint8_t *spd, enum memory_type type) { 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 }; @@ -45,28 +77,23 @@ static void mainboard_print_spd_info(uint8_t spd[]) 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 }; + const struct dram_info *info = &spd_info[type]; - 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]; + assert (info->type_code == spd[SPD_DRAM_TYPE_OFF]); /* 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; - } + printk(BIOS_INFO, "SPD: module type is %s\n", info->str); + + int banks = spd_banks[(spd[SPD_DENSITY_BANKS_OFF] >> 4) & 7]; + int capmb = spd_capmb[spd[SPD_DENSITY_BANKS_OFF] & 7] * 256; + int rows = spd_rows[(spd[SPD_ADDRESSING_OFF] >> 3) & 7]; + int cols = spd_cols[spd[SPD_ADDRESSING_OFF] & 7]; + int ranks = spd_ranks[(spd[info->org_off] >> 3) & 7]; + int devw = spd_devw[spd[info->org_off] & 7]; + int busw = spd_busw[spd[info->busw_off] & 7]; /* Module Part Number */ - memcpy(spd_name, &spd[SPD_PART_OFF], SPD_PART_LEN); + memcpy(spd_name, &spd[info->part_off], SPD_PART_LEN); spd_name[SPD_PART_LEN] = 0; printk(BIOS_INFO, "SPD: module part is %s\n", spd_name); @@ -83,11 +110,12 @@ static void mainboard_print_spd_info(uint8_t spd[]) } } -static uintptr_t mainboard_get_spd_data(void) +static uintptr_t mainboard_get_spd_data(enum memory_type type) { char *spd_file; size_t spd_file_len; int spd_index; + const size_t spd_len = spd_info[type].len; spd_index = variant_memory_sku(); assert(spd_index >= 0); @@ -100,17 +128,15 @@ static uintptr_t mainboard_get_spd_data(void) die("SPD data not found."); /* make sure we have at least one SPD in the file. */ - if (spd_file_len < SPD_LEN) + 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; - } + if (spd_file_len < ((spd_index + 1) * spd_len)) + die("Invalid SPD index."); - spd_index *= SPD_LEN; - mainboard_print_spd_info((uint8_t *)(spd_file + spd_index)); + spd_index *= spd_len; + mainboard_print_spd_info((uint8_t *)(spd_file + spd_index), type); return (uintptr_t)(spd_file + spd_index); } @@ -122,13 +148,19 @@ void mainboard_memory_init_params(FSPM_UPD *mupd) 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); + assert(p.type < MEMORY_COUNT); + + if (p.dq_map && p.dq_map_size) + memcpy(&mem_cfg->DqByteMapCh0, p.dq_map, p.dq_map_size); + + if (p.dqs_map && p.dqs_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->MemorySpdPtr00 = mainboard_get_spd_data(p.type); mem_cfg->MemorySpdPtr10 = mem_cfg->MemorySpdPtr00; - mem_cfg->MemorySpdDataLen = SPD_LEN; + mem_cfg->MemorySpdDataLen = spd_info[p.type].len; } |