| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Intel Corp. |
| * (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.) |
| * (Written by Andrey Petrov <andrey.petrov@intel.com> for Intel Corp.) |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <arch/io.h> |
| #include <cbfs.h> |
| #include <console/console.h> |
| #include <fsp/util.h> |
| #include <lib.h> |
| #include <memrange.h> |
| #include <program_loading.h> |
| #include <string.h> |
| |
| static bool looks_like_fsp_header(const uint8_t *raw_hdr) |
| { |
| if (memcmp(raw_hdr, FSP_HDR_SIGNATURE, 4)) { |
| printk(BIOS_ALERT, "Did not find a valid FSP signature\n"); |
| return false; |
| } |
| |
| if (read32(raw_hdr + 4) != FSP_HDR_LEN) { |
| printk(BIOS_ALERT, "FSP header has invalid length\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| enum cb_err fsp_identify(struct fsp_header *hdr, const void *fsp_blob) |
| { |
| const uint8_t *raw_hdr = fsp_blob; |
| |
| if (!looks_like_fsp_header(raw_hdr)) |
| return CB_ERR; |
| |
| hdr->spec_version = read8(raw_hdr + 10); |
| hdr->revision = read8(raw_hdr + 11); |
| hdr->fsp_revision = read32(raw_hdr + 12); |
| memcpy(hdr->image_id, raw_hdr + 16, ARRAY_SIZE(hdr->image_id)); |
| hdr->image_id[ARRAY_SIZE(hdr->image_id) - 1] = '\0'; |
| hdr->image_size = read32(raw_hdr + 24); |
| hdr->image_base = read32(raw_hdr + 28); |
| hdr->image_attribute = read16(raw_hdr + 32); |
| hdr->component_attribute = read16(raw_hdr + 34); |
| hdr->cfg_region_offset = read32(raw_hdr + 36); |
| hdr->cfg_region_size = read32(raw_hdr + 40); |
| hdr->notify_phase_entry_offset = read32(raw_hdr + 56); |
| hdr->memory_init_entry_offset = read32(raw_hdr + 60); |
| hdr->silicon_init_entry_offset = read32(raw_hdr + 68); |
| |
| return CB_SUCCESS; |
| } |
| |
| void fsp_print_header_info(const struct fsp_header *hdr) |
| { |
| union { |
| uint32_t val; |
| struct { |
| uint8_t bld_num; |
| uint8_t revision; |
| uint8_t minor; |
| uint8_t major; |
| } rev; |
| } revision; |
| |
| revision.val = hdr->fsp_revision; |
| |
| printk(BIOS_DEBUG, "Spec version: v%u.%u\n", (hdr->spec_version >> 4 ), |
| hdr->spec_version & 0xf); |
| printk(BIOS_DEBUG, "Revision: %u.%u.%u, Build Number %u\n", |
| revision.rev.major, |
| revision.rev.minor, |
| revision.rev.revision, |
| revision.rev.bld_num); |
| printk(BIOS_DEBUG, "Type: %s/%s\n", |
| (hdr->component_attribute & 1 ) ? "release" : "debug", |
| (hdr->component_attribute & 2 ) ? "test" : "official"); |
| printk(BIOS_DEBUG, "image ID: %s, base 0x%lx + 0x%zx\n", |
| hdr->image_id, hdr->image_base, hdr->image_size); |
| printk(BIOS_DEBUG, "\tConfig region 0x%zx + 0x%zx\n", |
| hdr->cfg_region_offset, hdr->cfg_region_size); |
| |
| if ((hdr->component_attribute >> 12) == FSP_HDR_ATTRIB_FSPM) { |
| printk(BIOS_DEBUG, "\tMemory init offset 0x%zx\n", |
| hdr->memory_init_entry_offset); |
| } |
| |
| if ((hdr->component_attribute >> 12) == FSP_HDR_ATTRIB_FSPS) { |
| printk(BIOS_DEBUG, "\tSilicon init offset 0x%zx\n", |
| hdr->silicon_init_entry_offset); |
| printk(BIOS_DEBUG, "\tNotify phase offset 0x%zx\n", |
| hdr->notify_phase_entry_offset); |
| } |
| |
| } |
| |
| /* TODO: this won't work for SoC's that need to XIP certain modules. */ |
| enum cb_err fsp_load_binary(struct fsp_header *hdr, |
| const char *name, |
| struct range_entry *range) |
| { |
| struct cbfsf file_desc; |
| struct region_device file_data; |
| void *membase; |
| |
| if (cbfs_boot_locate(&file_desc, name, NULL)) { |
| printk(BIOS_ERR, "Could not locate %s in CBFS\n", name); |
| return CB_ERR; |
| } |
| |
| cbfs_file_data(&file_data, &file_desc); |
| |
| /* Map just enough of the file to be able to parse the header. */ |
| membase = rdev_mmap(&file_data, FSP_HDR_OFFSET, FSP_HDR_LEN); |
| |
| if (membase == NULL) { |
| printk(BIOS_ERR, "Could not mmap() '%s' FSP header.\n", name); |
| return CB_ERR; |
| } |
| |
| if (fsp_identify(hdr, membase) != CB_SUCCESS) { |
| rdev_munmap(&file_data, membase); |
| printk(BIOS_ERR, "%s did not have a valid FSP header\n", name); |
| return CB_ERR; |
| } |
| |
| rdev_munmap(&file_data, membase); |
| |
| fsp_print_header_info(hdr); |
| |
| /* Check if size specified in the header matches the cbfs file size */ |
| if (region_device_sz(&file_data) < hdr->image_size) { |
| printk(BIOS_ERR, "%s size bigger than cbfs file.\n", name); |
| return CB_ERR; |
| } |
| |
| /* Check if the binary load address is within expected range */ |
| /* TODO: this doesn't check the current running program footprint. */ |
| if (range_entry_base(range) > hdr->image_base || |
| range_entry_end(range) <= hdr->image_base + hdr->image_size) { |
| printk(BIOS_ERR, "%s is outside of allowed range\n", name); |
| return CB_ERR; |
| } |
| |
| /* Load binary into memory. */ |
| if (rdev_readat(&file_data, (void *)hdr->image_base, 0, hdr->image_size) < 0) |
| return CB_ERR; |
| |
| /* Signal that FSP component has been loaded. */ |
| prog_segment_loaded(hdr->image_base, hdr->image_size, SEG_FINAL); |
| |
| return CB_SUCCESS; |
| } |