| /* |
| * This file is part of the libpayload project. |
| * |
| * Copyright (C) 2015 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <libpayload-config.h> |
| #include <libpayload.h> |
| #include <coreboot_tables.h> |
| #include <cbfs.h> |
| #include <fmap_serialized.h> |
| #include <stdint.h> |
| |
| int fmap_region_by_name(const uint32_t fmap_offset, const char * const name, |
| uint32_t * const offset, uint32_t * const size) |
| { |
| int i; |
| |
| struct fmap *fmap; |
| struct fmap fmap_head; |
| struct cbfs_media default_media; |
| struct cbfs_media *media = &default_media; |
| |
| if (init_default_cbfs_media(media) != 0) |
| return -1; |
| |
| media->open(media); |
| |
| if (!media->read(media, &fmap_head, fmap_offset, sizeof(fmap_head))) |
| return -1; |
| |
| if (memcmp(fmap_head.signature, FMAP_SIGNATURE, sizeof(fmap_head.signature))) { |
| return -1; |
| } |
| |
| int fmap_size = sizeof(*fmap) + |
| fmap_head.nareas * sizeof(struct fmap_area); |
| |
| fmap = malloc(fmap_size); |
| if (!fmap) |
| return -1; |
| |
| if (!media->read(media, fmap, fmap_offset, fmap_size)) |
| goto err; |
| |
| media->close(media); |
| |
| for (i = 0; i < fmap->nareas; i++) { |
| if (strcmp((const char *)fmap->areas[i].name, name) != 0) |
| continue; |
| if (offset) |
| *offset = fmap->areas[i].offset; |
| if (size) |
| *size = fmap->areas[i].size; |
| free(fmap); |
| return 0; |
| } |
| err: |
| free(fmap); |
| return -1; |
| } |