diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/broadwell/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/include/soc/pei_wrapper.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/spd.c | 95 |
3 files changed, 100 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/Makefile.inc b/src/soc/intel/broadwell/Makefile.inc index 55eddf18fd..db590e7fae 100644 --- a/src/soc/intel/broadwell/Makefile.inc +++ b/src/soc/intel/broadwell/Makefile.inc @@ -8,6 +8,7 @@ romstage-y += early_init.c romstage-y += raminit.c romstage-y += report_platform.c romstage-y += romstage.c +romstage-$(CONFIG_HAVE_SPD_IN_CBFS) += spd.c ramstage-y += acpi.c ramstage-y += finalize.c diff --git a/src/soc/intel/broadwell/include/soc/pei_wrapper.h b/src/soc/intel/broadwell/include/soc/pei_wrapper.h index cfdb910064..bd12a2b08c 100644 --- a/src/soc/intel/broadwell/include/soc/pei_wrapper.h +++ b/src/soc/intel/broadwell/include/soc/pei_wrapper.h @@ -28,8 +28,12 @@ static inline void pei_data_usb3_port(struct pei_data *pei_data, int port, #define SPD_MEMORY_DOWN 0xff +#define SPD_LEN 256 + void broadwell_fill_pei_data(struct pei_data *pei_data); void mainboard_fill_pei_data(struct pei_data *pei_data); void mainboard_fill_spd_data(struct pei_data *pei_data); +void fill_spd_for_index(uint8_t spd[], unsigned int spd_index); + #endif diff --git a/src/soc/intel/broadwell/spd.c b/src/soc/intel/broadwell/spd.c new file mode 100644 index 0000000000..97cac38f9c --- /dev/null +++ b/src/soc/intel/broadwell/spd.c @@ -0,0 +1,95 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <cbfs.h> +#include <console/console.h> +#include <soc/pei_data.h> +#include <soc/pei_wrapper.h> +#include <string.h> +#include <types.h> + +#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 + +static void 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_DDR3: + printk(BIOS_INFO, "DDR3\n"); + break; + case SPD_DRAM_LPDDR3: + printk(BIOS_INFO, "LPDDR3\n"); + break; + default: + printk(BIOS_INFO, "Unknown (%02x)\n", spd[SPD_DRAM_TYPE]); + break; + } + + /* 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); + } +} + +void fill_spd_for_index(uint8_t spd[], unsigned int spd_index) +{ + size_t spd_file_len; + uint8_t *spd_file = cbfs_map("spd.bin", &spd_file_len); + + printk(BIOS_DEBUG, "SPD index %d\n", spd_index); + + if (!spd_file) + die("SPD data not found."); + + if (spd_file_len < SPD_LEN) + die("Missing SPD data."); + + if (spd_file_len < ((spd_index + 1) * SPD_LEN)) { + printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n"); + spd_index = 0; + } + + memcpy(spd, spd_file + (spd_index * SPD_LEN), SPD_LEN); + + /* Make sure a valid SPD was found */ + if (spd[0] == 0) + die("Invalid SPD data."); + + print_spd_info(spd); +} |