diff options
Diffstat (limited to 'src/device/dram/ddr3.c')
| -rw-r--r-- | src/device/dram/ddr3.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/device/dram/ddr3.c b/src/device/dram/ddr3.c index 7655b32012..63ca964a5a 100644 --- a/src/device/dram/ddr3.c +++ b/src/device/dram/ddr3.c @@ -24,6 +24,9 @@ #include <device/device.h> #include <device/dram/ddr3.h> #include <string.h> +#include <memory_info.h> +#include <cbmem.h> +#include <smbios.h> /*============================================================================== * = DDR3 SPD decoding helpers @@ -522,6 +525,82 @@ int spd_xmp_decode_ddr3(dimm_attr *dimm, return ret; } + +/** + * Fill cbmem with information for SMBIOS type 17. + * + * @param channel Corresponding channel of provided @info + * @param slot Corresponding slot of provided @info + * @param selected_freq The actual frequency the DRAM is running on + * @param info DIMM parameters read from SPD + * + * @return CB_SUCCESS if DIMM info was written + */ +enum cb_err spd_add_smbios17(const u8 channel, const u8 slot, + const u16 selected_freq, + const dimm_attr *info) +{ + struct memory_info *mem_info; + struct dimm_info *dimm; + + /* + * Allocate CBMEM area for DIMM information used to populate SMBIOS + * table 17 + */ + mem_info = cbmem_find(CBMEM_ID_MEMINFO); + if (!mem_info) { + mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info)); + + printk(BIOS_DEBUG, "CBMEM entry for DIMM info: 0x%p\n", + mem_info); + if (!mem_info) + return CB_ERR; + + memset(mem_info, 0, sizeof(*mem_info)); + } + + dimm = &mem_info->dimm[mem_info->dimm_cnt]; + if (info->size_mb) { + dimm->ddr_type = MEMORY_TYPE_DDR3; + dimm->ddr_frequency = selected_freq; + dimm->dimm_size = info->size_mb; + dimm->channel_num = channel; + dimm->rank_per_dimm = info->ranks; + dimm->dimm_num = slot; + memcpy(dimm->module_part_number, info->part_number, 16); + dimm->mod_id = info->manufacturer_id; + + switch (info->dimm_type) { + case SPD_DIMM_TYPE_SO_DIMM: + dimm->mod_type = SPD_SODIMM; + break; + case SPD_DIMM_TYPE_72B_SO_CDIMM: + dimm->mod_type = SPD_72B_SO_CDIMM; + break; + case SPD_DIMM_TYPE_72B_SO_RDIMM: + dimm->mod_type = SPD_72B_SO_RDIMM; + break; + case SPD_DIMM_TYPE_UDIMM: + dimm->mod_type = SPD_UDIMM; + break; + case SPD_DIMM_TYPE_RDIMM: + dimm->mod_type = SPD_RDIMM; + break; + case SPD_DIMM_TYPE_UNDEFINED: + default: + dimm->mod_type = SPD_UNDEFINED; + break; + } + + dimm->bus_width = MEMORY_BUS_WIDTH_64; // non-ECC only + memcpy(dimm->serial, info->serial, + MIN(sizeof(dimm->serial), sizeof(info->serial))); + mem_info->dimm_cnt++; + } + + return CB_SUCCESS; +} + /* * The information printed below has a more informational character, and is not * necessarily tied in to RAM init debugging. Hence, we stop using printram(), |