69cc557cfb
cb_err_t was meant to be used in place of `enum cb_err` in all situations, but the choice to use a typedef here seems to be controversial. We should not be arbitrarily using two different identifiers for the same thing across the codebase, so since there are no use cases for serializing enum cb_err at the moment (which would be the primary reason to typedef a fixed-width integer instead), remove cb_err_t again for now. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Iaec36210d129db26d51f0a105d3de070c03b686b Reviewed-on: https://review.coreboot.org/c/coreboot/+/62600 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
133 lines
4 KiB
C
133 lines
4 KiB
C
/*
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*
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* Copyright (C) 2015 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <libpayload-config.h>
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#include <libpayload.h>
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#include <commonlib/bsd/fmap_serialized.h>
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#include <coreboot_tables.h>
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#include <cbfs.h>
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#include <boot_device.h>
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#include <stdint.h>
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#include <arch/virtual.h>
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/* Private fmap cache. */
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static struct fmap *_fmap_cache;
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static enum cb_err fmap_find_area(struct fmap *fmap, const char *name, size_t *offset,
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size_t *size)
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{
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for (size_t i = 0; i < le32toh(fmap->nareas); ++i) {
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if (strncmp((const char *)fmap->areas[i].name, name, FMAP_STRLEN) != 0)
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continue;
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if (offset)
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*offset = le32toh(fmap->areas[i].offset);
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if (size)
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*size = le32toh(fmap->areas[i].size);
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return CB_SUCCESS;
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}
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return CB_ERR;
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}
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static bool fmap_is_signature_valid(struct fmap *fmap)
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{
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return memcmp(fmap->signature, FMAP_SIGNATURE, sizeof(fmap->signature)) == 0;
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}
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static bool fmap_setup_cache(void)
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{
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/* Use FMAP cache if available */
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if (lib_sysinfo.fmap_cache
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&& fmap_is_signature_valid((struct fmap *)phys_to_virt(lib_sysinfo.fmap_cache))) {
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_fmap_cache = (struct fmap *)phys_to_virt(lib_sysinfo.fmap_cache);
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return true;
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}
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return false;
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}
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enum cb_err fmap_locate_area(const char *name, size_t *offset, size_t *size)
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{
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if (!_fmap_cache && !fmap_setup_cache())
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return CB_ERR;
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return fmap_find_area(_fmap_cache, name, offset, size);
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}
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/***********************************************************************************************
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* LEGACY CODE *
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**********************************************************************************************/
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int fmap_region_by_name(const uint32_t fmap_offset, const char * const name,
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uint32_t * const offset, uint32_t * const size)
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{
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int i;
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struct fmap *fmap;
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struct fmap fmap_head;
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struct cbfs_media default_media;
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struct cbfs_media *media = &default_media;
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if (init_default_cbfs_media(media) != 0)
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return -1;
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media->open(media);
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if (!media->read(media, &fmap_head, fmap_offset, sizeof(fmap_head)))
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return -1;
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if (memcmp(fmap_head.signature, FMAP_SIGNATURE, sizeof(fmap_head.signature))) {
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return -1;
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}
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int fmap_size = sizeof(*fmap) +
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fmap_head.nareas * sizeof(struct fmap_area);
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fmap = malloc(fmap_size);
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if (!fmap)
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return -1;
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if (!media->read(media, fmap, fmap_offset, fmap_size))
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goto err;
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media->close(media);
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for (i = 0; i < fmap->nareas; i++) {
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if (strcmp((const char *)fmap->areas[i].name, name) != 0)
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continue;
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if (offset)
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*offset = fmap->areas[i].offset;
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if (size)
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*size = fmap->areas[i].size;
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free(fmap);
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return 0;
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}
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err:
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free(fmap);
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return -1;
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}
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