diff options
Diffstat (limited to 'src/soc/intel/apollolake/meminit.c')
| -rw-r--r-- | src/soc/intel/apollolake/meminit.c | 88 |
1 files changed, 87 insertions, 1 deletions
diff --git a/src/soc/intel/apollolake/meminit.c b/src/soc/intel/apollolake/meminit.c index 92b84c80af..03e9ac485b 100644 --- a/src/soc/intel/apollolake/meminit.c +++ b/src/soc/intel/apollolake/meminit.c @@ -12,8 +12,11 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ - +#include <cbmem.h> #include <console/console.h> +#include <fsp/util.h> +#include <memory_info.h> +#include <smbios.h> #include <soc/meminit.h> #include <stddef.h> /* required for FspmUpd.h */ #include <soc/fsp/FspmUpd.h> @@ -252,3 +255,86 @@ void meminit_lpddr4_by_sku(struct FSP_M_CONFIG *cfg, lpcfg->swizzle_config); } } + +void save_lpddr4_dimm_info(const struct lpddr4_cfg *lp4cfg, size_t mem_sku) +{ + int channel, dimm, dimm_max, index; + size_t hob_size; + const struct DIMM_INFO *src_dimm; + struct dimm_info *dest_dimm; + struct memory_info *mem_info; + const struct CHANNEL_INFO *channel_info; + const struct FSP_SMBIOS_MEMORY_INFO *memory_info_hob; + + if (mem_sku >= lp4cfg->num_skus) { + printk(BIOS_ERR, "Too few LPDDR4 SKUs: 0x%zx/0x%zx\n", + mem_sku, lp4cfg->num_skus); + return; + } + + memory_info_hob = fsp_find_smbios_memory_info(&hob_size); + + /* + * Allocate CBMEM area for DIMM information used to populate SMBIOS + * table 17 + */ + mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info)); + if (mem_info == NULL) { + printk(BIOS_ERR, "CBMEM entry for DIMM info missing\n"); + return; + } + memset(mem_info, 0, sizeof(*mem_info)); + + /* Describe the first N DIMMs in the system */ + index = 0; + dimm_max = ARRAY_SIZE(mem_info->dimm); + for (channel = 0; channel < memory_info_hob->ChannelCount; channel++) { + if (index >= dimm_max) + break; + channel_info = &memory_info_hob->ChannelInfo[channel]; + for (dimm = 0; dimm < channel_info->DimmCount; dimm++) { + if (index >= dimm_max) + break; + src_dimm = &channel_info->DimmInfo[dimm]; + dest_dimm = &mem_info->dimm[index]; + + if (!src_dimm->SizeInMb) + continue; + + /* Populate the DIMM information */ + dest_dimm->dimm_size = src_dimm->SizeInMb; + dest_dimm->ddr_type = memory_info_hob->MemoryType; + dest_dimm->ddr_frequency = + memory_info_hob->MemoryFrequencyInMHz; + dest_dimm->channel_num = channel_info->ChannelId; + dest_dimm->dimm_num = src_dimm->DimmId; + strncpy((char *)dest_dimm->module_part_number, + lp4cfg->skus[mem_sku].part_num, + sizeof(dest_dimm->module_part_number)); + + switch (memory_info_hob->DataWidth) { + case 8: + dest_dimm->bus_width = MEMORY_BUS_WIDTH_8; + break; + case 16: + dest_dimm->bus_width = MEMORY_BUS_WIDTH_16; + break; + case 32: + dest_dimm->bus_width = MEMORY_BUS_WIDTH_32; + break; + case 64: + dest_dimm->bus_width = MEMORY_BUS_WIDTH_64; + break; + case 128: + dest_dimm->bus_width = MEMORY_BUS_WIDTH_128; + break; + default: + printk(BIOS_ERR, "Incorrect DIMM Data Width"); + } + index++; + } + } + mem_info->dimm_cnt = index; + printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt); +} + |