| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <soc/cnl_memcfg_init.h> |
| #include <soc/romstage.h> |
| #include <spd_bin.h> |
| #include <spd_cache.h> |
| #include "variant.h" |
| |
| void mainboard_memory_init_params(FSPM_UPD *memupd) |
| { |
| FSP_M_CONFIG *mem_cfg = &memupd->FspmConfig; |
| |
| struct cnl_mb_cfg memcfg = { |
| /* |
| * Rcomp resistor values. These values represent the resistance in |
| * ohms of the three rcomp resistors attached to the DDR_COMP_0, |
| * DDR_COMP_1, and DDR_COMP_2 pins on the DRAM. |
| */ |
| .rcomp_resistor = { 121, 81, 100 }, |
| |
| /* Rcomp target values */ |
| .rcomp_targets = { 100, 40, 20, 20, 26 }, |
| |
| /* |
| * Indicates whether memory is interleaved. |
| * Set to 1 for an interleaved design, |
| * set to 0 for non-interleaved design. |
| */ |
| .dq_pins_interleaved = 1, |
| |
| /* |
| * VREF_CA configuration. |
| * Set to 0 VREF_CA goes to both CH_A and CH_B, |
| * set to 1 VREF_CA goes to CH_A and VREF_DQ_A goes to CH_B, |
| * set to 2 VREF_CA goes to CH_A and VREF_DQ_B goes to CH_B. |
| */ |
| .vref_ca_config = 2, |
| |
| /* Early Command Training */ |
| .ect = 0, |
| }; |
| |
| |
| /* Read spd block to get memory config */ |
| struct spd_block blk = { |
| .addr_map = { 0x50, 0x52, }, |
| }; |
| |
| uint8_t *spd_cache; |
| size_t spd_cache_sz; |
| bool need_update_cache = false; |
| bool dimm_changed = true; |
| |
| /* load spd cache from RW_SPD_CACHE */ |
| if (load_spd_cache(&spd_cache, &spd_cache_sz) == CB_SUCCESS) { |
| if (!spd_cache_is_valid(spd_cache, spd_cache_sz)) { |
| printk(BIOS_WARNING, "Invalid SPD cache\n"); |
| } else { |
| dimm_changed = check_if_dimm_changed(spd_cache, &blk); |
| if (dimm_changed && memupd->FspmArchUpd.NvsBufferPtr != 0) { |
| /* Set mrc_cache as invalid */ |
| printk(BIOS_INFO, "Set mrc_cache as invalid\n"); |
| memupd->FspmArchUpd.NvsBufferPtr = 0; |
| } |
| } |
| need_update_cache = true; |
| } |
| |
| if (!dimm_changed) { |
| spd_fill_from_cache(spd_cache, &blk); |
| } else { |
| /* Access memory info through SMBUS. */ |
| get_spd_smbus(&blk); |
| |
| if (need_update_cache && update_spd_cache(&blk) == CB_ERR) |
| printk(BIOS_WARNING, "update SPD cache failed\n"); |
| } |
| |
| if (blk.spd_array[0] == NULL) { |
| memcfg.spd[0].read_type = NOT_EXISTING; |
| } else { |
| memcfg.spd[0].read_type = READ_SPD_MEMPTR; |
| memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; |
| memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_ptr = |
| (uintptr_t)blk.spd_array[0]; |
| } |
| |
| memcfg.spd[1].read_type = NOT_EXISTING; |
| |
| if (blk.spd_array[1] == NULL) { |
| memcfg.spd[2].read_type = NOT_EXISTING; |
| } else { |
| memcfg.spd[2].read_type = READ_SPD_MEMPTR; |
| memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; |
| memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_ptr = |
| (uintptr_t)blk.spd_array[1]; |
| } |
| |
| memcfg.spd[3].read_type = NOT_EXISTING; |
| dump_spd_info(&blk); |
| |
| cannonlake_memcfg_init(mem_cfg, &memcfg); |
| variant_memory_init_params(mem_cfg); |
| } |