diff options
Diffstat (limited to 'src/soc/intel/apollolake/meminit_util_apl.c')
| -rw-r--r-- | src/soc/intel/apollolake/meminit_util_apl.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/meminit_util_apl.c b/src/soc/intel/apollolake/meminit_util_apl.c new file mode 100644 index 0000000000..b79abb0f69 --- /dev/null +++ b/src/soc/intel/apollolake/meminit_util_apl.c @@ -0,0 +1,85 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2017 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * 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 <soc/intel/common/smbios.h> +#include <soc/meminit.h> +#include <string.h> + +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 DIMM_INFO *src_dimm; + struct dimm_info *dest_dimm; + struct memory_info *mem_info; + const CHANNEL_INFO *channel_info; + const 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 */ + dimm_info_fill(dest_dimm, + src_dimm->SizeInMb, + memory_info_hob->MemoryType, + memory_info_hob->MemoryFrequencyInMHz, + channel_info->ChannelId, + src_dimm->DimmId, + lp4cfg->skus[mem_sku].part_num, + strlen(lp4cfg->skus[mem_sku].part_num), + memory_info_hob->DataWidth); + index++; + } + } + mem_info->dimm_cnt = index; + printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt); +} |