1e113bc878
It's been several years already since we announced the deprecation of the legacy CBFS API for payloads. It's time to remove it completely. Change-Id: I0ed157ac2d1376b8dff4537af9a63731064b45f6 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/80650 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Jakub Czapiga <czapiga@google.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
81 lines
2.7 KiB
C
81 lines
2.7 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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