diff options
| -rw-r--r-- | src/vendorcode/google/chromeos/fmap.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/src/vendorcode/google/chromeos/fmap.c b/src/vendorcode/google/chromeos/fmap.c deleted file mode 100644 index 2cc223e67c..0000000000 --- a/src/vendorcode/google/chromeos/fmap.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2012 The ChromiumOS Authors. All rights reserved. - * - * 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; version 2 of the License. - * - * 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. - */ - -#include <stdint.h> -#include <stddef.h> -#include <string.h> -#include <console/console.h> -#include <cbfs.h> -#include "fmap.h" - -static int is_fmap_signature_valid(const struct fmap *fmap) -{ - const char reversed_sig[] = FMAP_REVERSED_SIGNATURE; - const char *p2 = reversed_sig + sizeof(FMAP_REVERSED_SIGNATURE) - 2; - const char *p1 = (char *)fmap; - - while (p2 >= reversed_sig) - if (*p1++ != *p2--) { - printk(BIOS_ERR, "No FMAP found at %p.\n", fmap); - return 1; - } - - printk(BIOS_DEBUG, "FMAP: Found \"%s\" version %d.%d at %p.\n", - fmap->name, fmap->ver_major, fmap->ver_minor, fmap); - printk(BIOS_DEBUG, "FMAP: base = %llx size = %x #areas = %d\n", - (unsigned long long)fmap->base, fmap->size, fmap->nareas); - - return 0; -} - -/* Find FMAP data structure in ROM. - * See http://code.google.com/p/flashmap/ for more information on FMAP. - */ -const struct fmap *fmap_find(void) -{ - /* FIXME: Get rid of the hard codes. The "easy" way would be to - * do a binary search, but since ROM accesses are slow, we don't - * want to spend a lot of time looking for the FMAP. An elegant - * solution would be to store a pointer to the FMAP in the CBFS - * master header; that would require some more changes to cbfstool - * and possibly cros_bundle_firmware. - */ - const struct fmap *fmap; - struct cbfs_media media; - size_t size; - - if (init_default_cbfs_media(&media)) { - printk(BIOS_ERR, "failed to init default cbfs media\n"); - return NULL; - } - - media.open(&media); - fmap = media.map(&media, CONFIG_FLASHMAP_OFFSET, sizeof(*fmap)); - - if (fmap == CBFS_MEDIA_INVALID_MAP_ADDRESS) { - printk(BIOS_ERR, "failed to map FMAP header\n"); - media.close(&media); - return NULL; - } - - if (is_fmap_signature_valid(fmap)) { - media.unmap(&media, fmap); - media.close(&media); - return NULL; - } - - size = sizeof(*fmap) + sizeof(struct fmap_area) * fmap->nareas; - media.unmap(&media, fmap); - fmap = media.map(&media, CONFIG_FLASHMAP_OFFSET, size); - - if (fmap == CBFS_MEDIA_INVALID_MAP_ADDRESS) { - printk(BIOS_ERR, "failed to map FMAP (size=%zu)\n", size); - media.unmap(&media, fmap); - media.close(&media); - return NULL; - } - - media.close(&media); - return fmap; -} - -const struct fmap_area *find_fmap_area(const struct fmap *fmap, - const char name[]) -{ - const struct fmap_area *area = NULL; - - if (fmap) { - int i; - for (i = 0; i < fmap->nareas; i++) { - if (!strcmp((const char *)fmap->areas[i].name, name)) { - area = &fmap->areas[i]; - break; - } - } - } - - if (area) { - printk(BIOS_DEBUG, "FMAP: area %s found\n", name); - printk(BIOS_DEBUG, "FMAP: offset: %x\n", area->offset); - printk(BIOS_DEBUG, "FMAP: size: %d bytes\n", area->size); - } else { - printk(BIOS_DEBUG, "FMAP: area %s not found\n", name); - } - - return area; -} - -int find_fmap_entry(const char name[], void **pointer) -{ - MAYBE_STATIC const struct fmap *fmap = NULL; - const struct fmap_area *area; - void *base = NULL; - - if (!fmap) - fmap = fmap_find(); - - area = find_fmap_area(fmap, name); - - if (!area) - return -1; - - /* Right now cros_bundle_firmware does not write a valid - * base address into the FMAP. Hence, if base is 0, assume - * 4GB-8MB as base address. - */ - if (fmap->base) { - base = (void *)(unsigned long)fmap->base; - printk(BIOS_DEBUG, "FMAP: %s base at %p\n", name, base); - } else { -#if CONFIG_ARCH_X86 - base = (void *)(0 - CONFIG_ROM_SIZE); - printk(BIOS_WARNING, "FMAP: No valid base address, using" - " 0x%p\n", base); -#endif - } - - *pointer = (void*) ((uintptr_t)base + area->offset); - printk(BIOS_DEBUG, "FMAP: %s at %p (offset %x)\n", - name, *pointer, area->offset); - return area->size; -} |