/* SPDX-License-Identifier: GPL-2.0-only */ #include <assert.h> #include <console/console.h> #include <fsp/util.h> #include <soc/meminit.h> #include <spd_bin.h> #include <string.h> static void spd_read_from_cbfs(const struct spd_info *spd_info, uintptr_t *spd_data_ptr, size_t *spd_data_len) { size_t spd_index = spd_info->spd_spec.spd_index; printk(BIOS_DEBUG, "SPD INDEX = %zu\n", spd_index); /* Memory leak is ok since we have memory mapped boot media */ assert(CONFIG(BOOT_DEVICE_MEMORY_MAPPED)); *spd_data_len = CONFIG_DIMM_SPD_SIZE; *spd_data_ptr = spd_cbfs_map(spd_index); if (!*spd_data_ptr) die("spd.bin not found or incorrect index\n"); } static void get_spd_data(const struct spd_info *spd_info, uintptr_t *spd_data_ptr, size_t *spd_data_len) { if (spd_info->read_type == READ_SPD_MEMPTR) { *spd_data_ptr = spd_info->spd_spec.spd_data_ptr_info.spd_data_ptr; *spd_data_len = spd_info->spd_spec.spd_data_ptr_info.spd_data_len; return; } if (spd_info->read_type == READ_SPD_CBFS) { spd_read_from_cbfs(spd_info, spd_data_ptr, spd_data_len); return; } die("no valid way to read SPD info"); } static void meminit_dq_dqs_map(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg, bool half_populated) { memcpy(&mem_cfg->RcompResistor, &board_cfg->rcomp_resistor, sizeof(mem_cfg->RcompResistor)); memcpy(&mem_cfg->RcompTarget, &board_cfg->rcomp_targets, sizeof(mem_cfg->RcompTarget)); memcpy(&mem_cfg->DqByteMapCh0, &board_cfg->dq_map[DDR_CH0], sizeof(board_cfg->dq_map[DDR_CH0])); memcpy(&mem_cfg->DqsMapCpu2DramCh0, &board_cfg->dqs_map[DDR_CH0], sizeof(board_cfg->dqs_map[DDR_CH0])); if (half_populated) return; memcpy(&mem_cfg->DqByteMapCh1, &board_cfg->dq_map[DDR_CH1], sizeof(board_cfg->dq_map[DDR_CH1])); memcpy(&mem_cfg->DqsMapCpu2DramCh1, &board_cfg->dqs_map[DDR_CH1], sizeof(board_cfg->dqs_map[DDR_CH1])); } static void meminit_channels(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg, uintptr_t spd_data_ptr, bool half_populated) { /* Channel 0 */ mem_cfg->MemorySpdPtr00 = spd_data_ptr; mem_cfg->MemorySpdPtr01 = 0; if (half_populated) { printk(BIOS_INFO, "%s: DRAM half-populated\n", __func__); spd_data_ptr = 0; } /* Channel 1 */ mem_cfg->MemorySpdPtr10 = spd_data_ptr; mem_cfg->MemorySpdPtr11 = 0; meminit_dq_dqs_map(mem_cfg, board_cfg, half_populated); } /* Initialize onboard memory configurations for lpddr4x */ void memcfg_init(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg, const struct spd_info *spd_info, bool half_populated) { if (spd_info->read_type == READ_SMBUS) { for (int i = 0; i < NUM_DIMM_SLOT; i++) mem_cfg->SpdAddressTable[i] = spd_info->spd_spec.spd_smbus_address[i]; meminit_dq_dqs_map(mem_cfg, board_cfg, half_populated); } else { uintptr_t spd_data_ptr = 0; size_t spd_data_len = 0; memset(&mem_cfg->SpdAddressTable, 0, sizeof(mem_cfg->SpdAddressTable)); get_spd_data(spd_info, &spd_data_ptr, &spd_data_len); print_spd_info((unsigned char *)spd_data_ptr); mem_cfg->MemorySpdDataLen = spd_data_len; meminit_channels(mem_cfg, board_cfg, spd_data_ptr, half_populated); } /* Early Command Training Enabled */ mem_cfg->ECT = board_cfg->ect; mem_cfg->UserBd = board_cfg->UserBd; }