| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <gpio.h> |
| #include <lib.h> |
| #include <memory_info.h> |
| #include <smbios.h> |
| #include <spd.h> |
| #include <soc/gpio.h> |
| #include <soc/romstage.h> |
| #include <string.h> |
| #include <spd_bin.h> |
| #include "spd_util.h" |
| |
| __weak uint8_t get_ramid(void) |
| { |
| gpio_t spd_gpios[] = { |
| GP_SW_80, /* SATA_GP3, RAMID0 */ |
| GP_SW_67, /* I2C3_SCL, RAMID1 */ |
| GP_SE_02, /* MF_PLT_CLK1, RAMID2 */ |
| GP_SW_64, /* I2C3_SDA, RAMID3 */ |
| }; |
| |
| return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios)); |
| } |
| |
| static void *get_spd_pointer(int *dual) |
| { |
| char *spd_file; |
| size_t spd_file_len; |
| int total_spds; |
| int ram_id = 0; |
| int spd_index = 0; |
| |
| /* Find the SPD data in CBFS. */ |
| spd_file = cbfs_map("spd.bin", &spd_file_len); |
| if (!spd_file) |
| die("SPD data not found."); |
| |
| if (spd_file_len < SPD_PAGE_LEN) |
| die("Missing SPD data."); |
| total_spds = spd_file_len / SPD_PAGE_LEN; |
| |
| ram_id = get_ramid(); |
| printk(BIOS_DEBUG, "ram_id=%d, total_spds: %d\n", ram_id, total_spds); |
| |
| spd_index = get_variant_spd_index(ram_id, dual); |
| if (spd_index >= total_spds) { |
| printk(BIOS_ERR, "SPD index > total SPDs\n"); |
| return NULL; |
| } |
| /* Return the serial product data for the RAM */ |
| return &spd_file[SPD_PAGE_LEN * spd_index]; |
| } |
| |
| /* Copy SPD data for on-board memory */ |
| void spd_memory_init_params(MEMORY_INIT_UPD *memory_params) |
| { |
| void *spd_content; |
| int dual_channel = 0; |
| |
| /* |
| * Both channels are always present in SPD data. Always use matched |
| * DIMMs so use the same SPD data for each DIMM. |
| */ |
| spd_content = get_spd_pointer(&dual_channel); |
| if (CONFIG(DISPLAY_SPD_DATA) && spd_content != NULL) { |
| printk(BIOS_DEBUG, "SPD Data:\n"); |
| hexdump(spd_content, SPD_PAGE_LEN); |
| printk(BIOS_DEBUG, "\n"); |
| } |
| |
| /* |
| * Set SPD and memory configuration: |
| * Memory type: 0=DimmInstalled, |
| * 1=SolderDownMemory, |
| * 2=DimmDisabled |
| */ |
| if (spd_content != NULL) { |
| memory_params->PcdMemChannel0Config = 1; |
| printk(BIOS_DEBUG, "Channel 0 DIMM soldered down\n"); |
| if (dual_channel) { |
| printk(BIOS_DEBUG, "Channel 1 DIMM soldered down\n"); |
| memory_params->PcdMemChannel1Config = 1; |
| } else { |
| printk(BIOS_DEBUG, "Channel 1 DIMM not installed\n"); |
| memory_params->PcdMemChannel1Config = 2; |
| } |
| } |
| |
| /* Update SPD data */ |
| if (CONFIG(BOARD_GOOGLE_CYAN)) { |
| memory_params->PcdMemoryTypeEnable = MEM_DDR3; |
| memory_params->PcdMemorySpdPtr = (uintptr_t)spd_content; |
| } else { |
| memory_params->PcdMemoryTypeEnable = MEM_LPDDR3; |
| } |
| } |
| |
| static void set_dimm_info(const uint8_t *spd, struct dimm_info *dimm) |
| { |
| const int spd_capmb[8] = { 1, 2, 4, 8, 16, 32, 64, 0 }; |
| const int spd_ranks[8] = { 1, 2, 3, 4, -1, -1, -1, -1 }; |
| const int spd_devw[8] = { 4, 8, 16, 32, -1, -1, -1, -1 }; |
| const int spd_busw[8] = { 8, 16, 32, 64, -1, -1, -1, -1 }; |
| |
| int capmb = spd_capmb[spd[SPD_DENSITY_BANKS] & 7] * 256; |
| int ranks = spd_ranks[(spd[DDR3_ORGANIZATION] >> 3) & 7]; |
| int devw = spd_devw[spd[DDR3_ORGANIZATION] & 7]; |
| int busw = spd_busw[spd[DDR3_BUS_DEV_WIDTH] & 7]; |
| |
| void *hob_list_ptr; |
| EFI_HOB_GUID_TYPE *hob_ptr; |
| FSP_SMBIOS_MEMORY_INFO *memory_info_hob; |
| const EFI_GUID memory_info_hob_guid = FSP_SMBIOS_MEMORY_INFO_GUID; |
| |
| /* Locate the memory info HOB, presence validated by raminit */ |
| hob_list_ptr = fsp_get_hob_list(); |
| hob_ptr = get_next_guid_hob(&memory_info_hob_guid, hob_list_ptr); |
| if (hob_ptr != NULL) { |
| memory_info_hob = (FSP_SMBIOS_MEMORY_INFO *)(hob_ptr + 1); |
| dimm->ddr_frequency = memory_info_hob->MemoryFrequencyInMHz; |
| } else { |
| printk(BIOS_ERR, "Can't get memory info hob pointer\n"); |
| dimm->ddr_frequency = 0; |
| } |
| |
| /* Parse the SPD data to determine the DIMM information */ |
| if (CONFIG(BOARD_GOOGLE_CYAN)) { |
| dimm->ddr_type = MEMORY_TYPE_DDR3; |
| } else { |
| dimm->ddr_type = MEMORY_TYPE_LPDDR3; |
| } |
| dimm->dimm_size = capmb / 8 * busw / devw * ranks; /* MiB */ |
| dimm->mod_type = spd[3] & 0xf; |
| strncpy((char *)&dimm->module_part_number[0], (char *)&spd[0x80], |
| LPDDR3_SPD_PART_LEN); |
| dimm->module_part_number[LPDDR3_SPD_PART_LEN] = 0; |
| dimm->mod_id = *(uint16_t *)&spd[0x94]; |
| |
| switch (busw) { |
| default: |
| case 8: |
| dimm->bus_width = MEMORY_BUS_WIDTH_8; |
| break; |
| |
| case 16: |
| dimm->bus_width = MEMORY_BUS_WIDTH_16; |
| break; |
| |
| case 32: |
| dimm->bus_width = MEMORY_BUS_WIDTH_32; |
| break; |
| |
| case 64: |
| dimm->bus_width = MEMORY_BUS_WIDTH_64; |
| break; |
| } |
| } |
| |
| void mainboard_save_dimm_info(struct romstage_params *params) |
| { |
| const void *spd_content; |
| int dual_channel; |
| struct dimm_info *dimm; |
| struct memory_info *mem_info; |
| |
| spd_content = get_spd_pointer(&dual_channel); |
| if (spd_content == NULL) |
| return; |
| |
| /* |
| * Allocate CBMEM area for DIMM information used to populate SMBIOS |
| * table 17 |
| */ |
| mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info)); |
| printk(BIOS_DEBUG, "CBMEM entry for DIMM info: %p\n", mem_info); |
| if (mem_info == NULL) |
| return; |
| memset(mem_info, 0, sizeof(*mem_info)); |
| |
| /* Describe the first channel memory */ |
| dimm = &mem_info->dimm[0]; |
| set_dimm_info(spd_content, dimm); |
| mem_info->dimm_cnt = 1; |
| |
| /* Describe the second channel memory */ |
| if (dual_channel) { |
| dimm = &mem_info->dimm[1]; |
| set_dimm_info(spd_content, dimm); |
| dimm->channel_num = 1; |
| mem_info->dimm_cnt = 2; |
| } |
| } |