| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 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 <arch/cbfs.h> |
| #include <arch/io.h> |
| #include <assert.h> |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <device/pci_def.h> |
| #include <lib.h> |
| #include <string.h> |
| #if CONFIG_EC_GOOGLE_CHROMEEC |
| #include <ec/google/chromeec/ec.h> |
| #include <ec/google/chromeec/ec_commands.h> |
| #endif |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #include <soc/intel/common/mrc_cache.h> |
| #include <soc/iomap.h> |
| #include <soc/pei_data.h> |
| #include <soc/pei_wrapper.h> |
| #include <soc/pm.h> |
| #include <soc/reset.h> |
| #include <soc/romstage.h> |
| #include <soc/smm.h> |
| #include <soc/systemagent.h> |
| |
| /* |
| * Find PEI executable in coreboot filesystem and execute it. |
| */ |
| void raminit(struct pei_data *pei_data) |
| { |
| struct region_device rdev; |
| struct memory_info* mem_info; |
| pei_wrapper_entry_t entry; |
| int ret; |
| |
| broadwell_fill_pei_data(pei_data); |
| |
| if (vboot_recovery_mode_enabled()) { |
| /* Recovery mode does not use MRC cache */ |
| printk(BIOS_DEBUG, "Recovery mode: not using MRC cache.\n"); |
| } else if (!mrc_cache_get_current(MRC_TRAINING_DATA, 0, &rdev)) { |
| /* MRC cache found */ |
| pei_data->saved_data_size = region_device_sz(&rdev); |
| pei_data->saved_data = rdev_mmap_full(&rdev); |
| /* Assume boot device is memory mapped. */ |
| assert(IS_ENABLED(CONFIG_BOOT_DEVICE_MEMORY_MAPPED)); |
| } else if (pei_data->boot_mode == ACPI_S3) { |
| /* Waking from S3 and no cache. */ |
| printk(BIOS_DEBUG, "No MRC cache found in S3 resume path.\n"); |
| post_code(POST_RESUME_FAILURE); |
| reset_system(); |
| } else { |
| printk(BIOS_DEBUG, "No MRC cache found.\n"); |
| #if CONFIG_EC_GOOGLE_CHROMEEC |
| if (pei_data->boot_mode == ACPI_S0) { |
| /* Ensure EC is running RO firmware. */ |
| google_chromeec_check_ec_image(EC_IMAGE_RO); |
| } |
| #endif |
| } |
| |
| /* |
| * Do not use saved pei data. Can be set by mainboard romstage |
| * to force a full train of memory on every boot. |
| */ |
| if (pei_data->disable_saved_data) { |
| printk(BIOS_DEBUG, "Disabling PEI saved data by request\n"); |
| pei_data->saved_data = NULL; |
| pei_data->saved_data_size = 0; |
| } |
| |
| /* Determine if mrc.bin is in the cbfs. */ |
| entry = cbfs_boot_map_with_leak("mrc.bin", CBFS_TYPE_MRC, NULL); |
| if (entry == NULL) { |
| printk(BIOS_DEBUG, "Couldn't find mrc.bin\n"); |
| return; |
| } |
| |
| printk(BIOS_DEBUG, "Starting Memory Reference Code\n"); |
| |
| ret = entry(pei_data); |
| if (ret < 0) |
| die("pei_data version mismatch\n"); |
| |
| /* Print the MRC version after executing the UEFI PEI stage. */ |
| u32 version = MCHBAR32(MCHBAR_PEI_VERSION); |
| printk(BIOS_DEBUG, "MRC Version %d.%d.%d Build %d\n", |
| version >> 24 , (version >> 16) & 0xff, |
| (version >> 8) & 0xff, version & 0xff); |
| |
| report_memory_config(); |
| |
| /* Basic memory sanity test */ |
| quick_ram_check(); |
| |
| if (pei_data->boot_mode != ACPI_S3) { |
| cbmem_initialize_empty(); |
| } else if (cbmem_initialize()) { |
| #if CONFIG_HAVE_ACPI_RESUME |
| printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n"); |
| /* Failed S3 resume, reset to come up cleanly */ |
| reset_system(); |
| #endif |
| } |
| |
| printk(BIOS_DEBUG, "MRC data at %p %d bytes\n", pei_data->data_to_save, |
| pei_data->data_to_save_size); |
| |
| if (pei_data->data_to_save != NULL && pei_data->data_to_save_size > 0) |
| mrc_cache_stash_data(MRC_TRAINING_DATA, 0, |
| pei_data->data_to_save, |
| pei_data->data_to_save_size); |
| |
| printk(BIOS_DEBUG, "create cbmem for dimm information\n"); |
| mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info)); |
| memcpy(mem_info, &pei_data->meminfo, sizeof(struct memory_info)); |
| |
| } |