| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 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 <console/console.h> |
| #include <string.h> |
| #include <arch/io.h> |
| #include <cbmem.h> |
| #include <arch/cbfs.h> |
| #include <cbfs.h> |
| #include <halt.h> |
| #include <ip_checksum.h> |
| #include <memory_info.h> |
| #include <mrc_cache.h> |
| #include <device/pci_def.h> |
| #include <device/dram/ddr3.h> |
| #include <smbios.h> |
| #include <spd.h> |
| #include <security/vboot/vboot_common.h> |
| #include <commonlib/region.h> |
| #include "raminit.h" |
| #include "pei_data.h" |
| #include "haswell.h" |
| |
| #define MRC_CACHE_VERSION 1 |
| |
| void save_mrc_data(struct pei_data *pei_data) |
| { |
| /* Save the MRC S3 restore data to cbmem */ |
| mrc_cache_stash_data(MRC_TRAINING_DATA, MRC_CACHE_VERSION, |
| pei_data->mrc_output, pei_data->mrc_output_len); |
| } |
| |
| static void prepare_mrc_cache(struct pei_data *pei_data) |
| { |
| struct region_device rdev; |
| |
| // preset just in case there is an error |
| pei_data->mrc_input = NULL; |
| pei_data->mrc_input_len = 0; |
| |
| if (mrc_cache_get_current(MRC_TRAINING_DATA, MRC_CACHE_VERSION, &rdev)) |
| /* error message printed in find_current_mrc_cache */ |
| return; |
| |
| pei_data->mrc_input = rdev_mmap_full(&rdev); |
| pei_data->mrc_input_len = region_device_sz(&rdev); |
| |
| printk(BIOS_DEBUG, "%s: at %p, size %x\n", |
| __func__, pei_data->mrc_input, pei_data->mrc_input_len); |
| } |
| |
| static const char *ecc_decoder[] = { |
| "inactive", |
| "active on IO", |
| "disabled on IO", |
| "active" |
| }; |
| |
| /* |
| * Dump in the log memory controller configuration as read from the memory |
| * controller registers. |
| */ |
| static void report_memory_config(void) |
| { |
| u32 addr_decoder_common, addr_decode_ch[2]; |
| int i; |
| |
| addr_decoder_common = MCHBAR32(0x5000); |
| addr_decode_ch[0] = MCHBAR32(0x5004); |
| addr_decode_ch[1] = MCHBAR32(0x5008); |
| |
| printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n", |
| (MCHBAR32(0x5e04) * 13333 * 2 + 50)/100); |
| printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n", |
| addr_decoder_common & 3, |
| (addr_decoder_common >> 2) & 3, |
| (addr_decoder_common >> 4) & 3); |
| |
| for (i = 0; i < ARRAY_SIZE(addr_decode_ch); i++) { |
| u32 ch_conf = addr_decode_ch[i]; |
| printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n", |
| i, ch_conf); |
| printk(BIOS_DEBUG, " ECC %s\n", |
| ecc_decoder[(ch_conf >> 24) & 3]); |
| printk(BIOS_DEBUG, " enhanced interleave mode %s\n", |
| ((ch_conf >> 22) & 1) ? "on" : "off"); |
| printk(BIOS_DEBUG, " rank interleave %s\n", |
| ((ch_conf >> 21) & 1) ? "on" : "off"); |
| printk(BIOS_DEBUG, " DIMMA %d MB width %s %s rank%s\n", |
| ((ch_conf >> 0) & 0xff) * 256, |
| ((ch_conf >> 19) & 1) ? "x16" : "x8 or x32", |
| ((ch_conf >> 17) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? "" : ", selected"); |
| printk(BIOS_DEBUG, " DIMMB %d MB width %s %s rank%s\n", |
| ((ch_conf >> 8) & 0xff) * 256, |
| ((ch_conf >> 20) & 1) ? "x16" : "x8 or x32", |
| ((ch_conf >> 18) & 1) ? "dual" : "single", |
| ((ch_conf >> 16) & 1) ? ", selected" : ""); |
| } |
| } |
| |
| /** |
| * Find PEI executable in coreboot filesystem and execute it. |
| * |
| * @param pei_data: configuration data for UEFI PEI reference code |
| */ |
| void sdram_initialize(struct pei_data *pei_data) |
| { |
| unsigned long entry; |
| uint32_t type = CBFS_TYPE_MRC; |
| struct cbfsf f; |
| |
| printk(BIOS_DEBUG, "Starting UEFI PEI System Agent\n"); |
| |
| /* |
| * Do not pass MRC data in for recovery mode boot, |
| * Always pass it in for S3 resume. |
| */ |
| if (!vboot_recovery_mode_enabled() || pei_data->boot_mode == 2) |
| prepare_mrc_cache(pei_data); |
| |
| /* If MRC data is not found we cannot continue S3 resume. */ |
| if (pei_data->boot_mode == 2 && !pei_data->mrc_input) { |
| post_code(POST_RESUME_FAILURE); |
| printk(BIOS_DEBUG, "Giving up in sdram_initialize: " |
| "No MRC data\n"); |
| outb(0x6, 0xcf9); |
| halt(); |
| } |
| |
| /* Pass console handler in pei_data */ |
| pei_data->tx_byte = do_putchar; |
| |
| /* |
| * Locate and call UEFI System Agent binary. The binary needs to be at |
| * a fixed offset in the flash and can therefore only reside in the |
| * COREBOOT fmap region |
| */ |
| if (cbfs_locate_file_in_region(&f, "COREBOOT", "mrc.bin", &type) < 0) |
| die("mrc.bin not found!"); |
| /* We don't care about leaking the mapping */ |
| entry = (unsigned long)rdev_mmap_full(&f.data); |
| if (entry) { |
| int rv; |
| asm volatile ( |
| "call *%%ecx\n\t" |
| :"=a" (rv) : "c" (entry), "a" (pei_data)); |
| if (rv) { |
| switch (rv) { |
| case -1: |
| printk(BIOS_ERR, "PEI version mismatch.\n"); |
| break; |
| case -2: |
| printk(BIOS_ERR, "Invalid memory frequency.\n"); |
| break; |
| default: |
| printk(BIOS_ERR, "MRC returned %x.\n", rv); |
| } |
| die("Nonzero MRC return value.\n"); |
| } |
| } else { |
| die("UEFI PEI System Agent not found.\n"); |
| } |
| |
| /* For reference print the System Agent version |
| * after executing the UEFI PEI stage. |
| */ |
| u32 version = MCHBAR32(0x5034); |
| printk(BIOS_DEBUG, "System Agent Version %d.%d.%d Build %d\n", |
| version >> 24, (version >> 16) & 0xff, |
| (version >> 8) & 0xff, version & 0xff); |
| |
| report_memory_config(); |
| } |
| |
| void setup_sdram_meminfo(struct pei_data *pei_data) |
| { |
| u32 addr_decoder_common, addr_decode_ch[2]; |
| struct memory_info* mem_info; |
| struct dimm_info *dimm; |
| int ddr_frequency; |
| int dimm_size; |
| int ch, d_num; |
| int dimm_cnt = 0; |
| |
| mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info)); |
| if (!mem_info) |
| die("Failed to add memory info to CBMEM.\n"); |
| memset(mem_info, 0, sizeof(struct memory_info)); |
| |
| addr_decoder_common = MCHBAR32(0x5000); |
| addr_decode_ch[0] = MCHBAR32(0x5004); |
| addr_decode_ch[1] = MCHBAR32(0x5008); |
| |
| ddr_frequency = (MCHBAR32(0x5e04) * 13333 * 2 + 50) / 100; |
| |
| for (ch = 0; ch < ARRAY_SIZE(addr_decode_ch); ch++) { |
| u32 ch_conf = addr_decode_ch[ch]; |
| /* DIMMs A/B */ |
| for (d_num = 0; d_num < 2; d_num++) { |
| dimm_size = ((ch_conf >> (d_num * 8)) & 0xff) * 256; |
| if (dimm_size) { |
| dimm = &mem_info->dimm[dimm_cnt]; |
| dimm->dimm_size = dimm_size; |
| dimm->ddr_type = MEMORY_TYPE_DDR3; |
| dimm->ddr_frequency = ddr_frequency; |
| dimm->rank_per_dimm = 1 + ((ch_conf >> (17 + d_num)) & 1); |
| dimm->channel_num = ch; |
| dimm->dimm_num = d_num; |
| dimm->bank_locator = ch * 2; |
| memcpy(dimm->serial, |
| &pei_data->spd_data[dimm_cnt][SPD_DIMM_SERIAL_NUM], |
| SPD_DIMM_SERIAL_LEN); |
| memcpy(dimm->module_part_number, |
| &pei_data->spd_data[dimm_cnt][SPD_DIMM_PART_NUM], |
| SPD_DIMM_PART_LEN); |
| dimm->mod_id = |
| (pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID2] << 8) | |
| (pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID1] & 0xFF); |
| dimm->mod_type = SPD_SODIMM; |
| dimm->bus_width = 0x3; /* 64-bit */ |
| dimm_cnt++; |
| } |
| } |
| } |
| mem_info->dimm_cnt = dimm_cnt; |
| } |