| /* |
| * Copyright 2012 Google Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * 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. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <gbb_header.h> |
| #include <libpayload.h> |
| |
| #include "config.h" |
| #include "drivers/flash/flash.h" |
| #include "image/fmap.h" |
| #include "image/symbols.h" |
| #include "vboot/util/commonparams.h" |
| |
| VbCommonParams cparams CPARAMS; |
| uint8_t shared_data_blob[VB_SHARED_DATA_REC_SIZE] SHARED_DATA; |
| |
| static void *gbb_copy_in(uint32_t gbb_offset, uint32_t offset, uint32_t size) |
| { |
| uint8_t *gbb_copy = cparams.gbb_data; |
| |
| if (offset > cparams.gbb_size || offset + size > cparams.gbb_size) { |
| printf("GBB component not inside the GBB.\n"); |
| return NULL; |
| } |
| |
| void *data; |
| data = flash_read(gbb_offset + offset, size); |
| if (!data) |
| return NULL; |
| memcpy(gbb_copy + offset, data, size); |
| return gbb_copy + offset; |
| } |
| |
| static int gbb_init(void) |
| { |
| FmapArea area; |
| if (fmap_find_area("GBB", &area)) { |
| printf("Couldn't find the GBB.\n"); |
| return 1; |
| } |
| |
| if (area.size > CONFIG_GBB_COPY_SIZE) { |
| printf("Not enough room for a copy of the GBB.\n"); |
| return 1; |
| } |
| |
| cparams.gbb_size = area.size; |
| cparams.gbb_data = &_gbb_copy_start; |
| memset(cparams.gbb_data, 0, cparams.gbb_size); |
| |
| uint32_t offset = area.offset; |
| |
| GoogleBinaryBlockHeader *header = |
| gbb_copy_in(offset, 0, sizeof(GoogleBinaryBlockHeader)); |
| if (!header) |
| return 1; |
| printf("The GBB signature is at %p and is: ", header->signature); |
| for (int i = 0; i < GBB_SIGNATURE_SIZE; i++) |
| printf(" %02x", header->signature[i]); |
| printf("\n"); |
| |
| if (!gbb_copy_in(offset, header->hwid_offset, header->hwid_size)) |
| return 1; |
| |
| if (!gbb_copy_in(offset, header->rootkey_offset, header->rootkey_size)) |
| return 1; |
| |
| if (!gbb_copy_in(offset, header->recovery_key_offset, |
| header->recovery_key_size)) |
| return 1; |
| |
| return 0; |
| } |
| |
| int gbb_copy_in_bmp_block(void) |
| { |
| FmapArea area; |
| if (fmap_find_area("GBB", &area)) { |
| printf("Couldn't find the GBB.\n"); |
| return 1; |
| } |
| |
| GoogleBinaryBlockHeader *header = |
| (GoogleBinaryBlockHeader *)cparams.gbb_data; |
| |
| if (!gbb_copy_in(area.offset, header->bmpfv_offset, |
| header->bmpfv_size)) |
| return 1; |
| |
| return 0; |
| } |
| |
| int common_params_init(int clear_shared_data) |
| { |
| // Set up the common param structure. |
| memset(&cparams, 0, sizeof(cparams)); |
| |
| if (gbb_init()) |
| return 1; |
| |
| void *blob; |
| int size; |
| if (find_common_params(&blob, &size)) |
| return 1; |
| |
| cparams.shared_data_blob = blob; |
| cparams.shared_data_size = size; |
| if (clear_shared_data) |
| memset(blob, 0, size); |
| |
| return 0; |
| } |