a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2012-2015 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <boot_device.h>
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#include <console/console.h>
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#include <fmap.h>
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#include <commonlib/fmap_serialized.h>
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#include <stddef.h>
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#include <string.h>
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/*
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* See http://code.google.com/p/flashmap/ for more information on FMAP.
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*/
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int find_fmap_directory(struct region_device *fmrd)
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{
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const struct region_device *boot;
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struct fmap *fmap;
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size_t fmap_size;
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size_t offset = CONFIG_FLASHMAP_OFFSET;
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boot_device_init();
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boot = boot_device_ro();
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if (boot == NULL)
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return -1;
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fmap_size = sizeof(struct fmap);
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fmap = rdev_mmap(boot, offset, fmap_size);
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if (fmap == NULL)
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return -1;
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if (memcmp(fmap->signature, FMAP_SIGNATURE, sizeof(fmap->signature))) {
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printk(BIOS_DEBUG, "No FMAP found at %zx offset.\n", offset);
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rdev_munmap(boot, fmap);
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return -1;
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}
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printk(BIOS_DEBUG, "FMAP: Found \"%s\" version %d.%d at %zx.\n",
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fmap->name, fmap->ver_major, fmap->ver_minor, offset);
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printk(BIOS_DEBUG, "FMAP: base = %llx size = %x #areas = %d\n",
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(long long)fmap->base, fmap->size, fmap->nareas);
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fmap_size += fmap->nareas * sizeof(struct fmap_area);
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rdev_munmap(boot, fmap);
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return rdev_chain(fmrd, boot, offset, fmap_size);
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}
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int fmap_locate_area_as_rdev(const char *name, struct region_device *area)
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{
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struct region ar;
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if (fmap_locate_area(name, &ar))
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return -1;
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return boot_device_ro_subregion(&ar, area);
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}
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int fmap_locate_area(const char *name, struct region *ar)
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{
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struct region_device fmrd;
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size_t offset;
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if (find_fmap_directory(&fmrd))
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return -1;
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/* Start reading the areas just after fmap header. */
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offset = sizeof(struct fmap);
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while (1) {
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struct fmap_area *area;
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area = rdev_mmap(&fmrd, offset, sizeof(*area));
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if (area == NULL)
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return -1;
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if (strcmp((const char *)area->name, name)) {
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rdev_munmap(&fmrd, area);
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offset += sizeof(struct fmap_area);
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continue;
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}
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printk(BIOS_DEBUG, "FMAP: area %s found\n", name);
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printk(BIOS_DEBUG, "FMAP: offset: %x\n", area->offset);
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printk(BIOS_DEBUG, "FMAP: size: %d bytes\n", area->size);
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ar->offset = area->offset;
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ar->size = area->size;
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rdev_munmap(&fmrd, area);
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return 0;
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}
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printk(BIOS_DEBUG, "FMAP: area %s not found\n", name);
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return -1;
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}
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int fmap_find_region_name(const struct region * const ar,
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char name[FMAP_STRLEN])
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{
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struct region_device fmrd;
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size_t offset;
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if (find_fmap_directory(&fmrd))
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return -1;
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/* Start reading the areas just after fmap header. */
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offset = sizeof(struct fmap);
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while (1) {
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struct fmap_area *area;
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area = rdev_mmap(&fmrd, offset, sizeof(*area));
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if (area == NULL)
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return -1;
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if ((ar->offset != area->offset) ||
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(ar->size != area->size)) {
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rdev_munmap(&fmrd, area);
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offset += sizeof(struct fmap_area);
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continue;
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}
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printk(BIOS_DEBUG, "FMAP: area (%zx, %zx) found, named %s\n",
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ar->offset, ar->size, area->name);
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memcpy(name, area->name, FMAP_STRLEN);
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rdev_munmap(&fmrd, area);
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return 0;
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}
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printk(BIOS_DEBUG, "FMAP: area (%zx, %zx) not found\n",
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ar->offset, ar->size);
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return -1;
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}
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