diff options
Diffstat (limited to 'common/fmap.c')
| -rw-r--r-- | common/fmap.c | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/common/fmap.c b/common/fmap.c deleted file mode 100644 index 47fa75f0e9..0000000000 --- a/common/fmap.c +++ /dev/null @@ -1,260 +0,0 @@ -/* - * Copyright 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <stddef.h> - -#include "common.h" -#include "cros_version.h" -#include "rwsig.h" -#include "util.h" - -/* - * FMAP structs. - * See https://chromium.googlesource.com/chromiumos/third_party/flashmap/+/master/lib/fmap.h - */ -#define FMAP_NAMELEN 32 -#define FMAP_SIGNATURE "__FMAP__" -#define FMAP_SIGNATURE_SIZE 8 -#define FMAP_VER_MAJOR 1 -#define FMAP_VER_MINOR 0 - -/* - * For address containing CONFIG_PROGRAM_MEMORY_BASE (symbols in *.RO.lds.S and - * variable), this computes the offset to the start of the image on flash. - */ -#define RELATIVE_RO(addr) ((addr) - CONFIG_PROGRAM_MEMORY_BASE - \ - CONFIG_RO_MEM_OFF) - -/* - * All internal EC code assumes that offsets are provided relative to - * physical address zero of storage. In some cases, the region of storage - * belonging to the EC is not physical address zero - a non-zero fmap_base - * indicates so. Since fmap_base is not yet handled correctly by external - * code, we must perform the adjustment in our host command handlers - - * adjust all offsets so they are relative to the beginning of the storage - * region belonging to the EC. TODO(crbug.com/529365): Handle fmap_base - * correctly in flashrom, dump_fmap, etc. and remove EC_FLASH_REGION_START. - */ -#if CONFIG_EC_WRITABLE_STORAGE_OFF < CONFIG_EC_PROTECTED_STORAGE_OFF -#define FMAP_REGION_START CONFIG_EC_WRITABLE_STORAGE_OFF -#else -#define FMAP_REGION_START CONFIG_EC_PROTECTED_STORAGE_OFF -#endif - -struct fmap_header { - char fmap_signature[FMAP_SIGNATURE_SIZE]; - uint8_t fmap_ver_major; - uint8_t fmap_ver_minor; - uint64_t fmap_base; - uint32_t fmap_size; - char fmap_name[FMAP_NAMELEN]; - uint16_t fmap_nareas; -} __packed; - -#define FMAP_AREA_STATIC BIT(0) /* can be checksummed */ -#define FMAP_AREA_COMPRESSED BIT(1) /* may be compressed */ -#define FMAP_AREA_RO BIT(2) /* writes may fail */ - -struct fmap_area_header { - uint32_t area_offset; - uint32_t area_size; - char area_name[FMAP_NAMELEN]; - uint16_t area_flags; -} __packed; - -#ifdef CONFIG_RWSIG_TYPE_RWSIG -#define NUM_EC_FMAP_AREAS_RWSIG 2 -#else -#define NUM_EC_FMAP_AREAS_RWSIG 0 -#endif - -#ifdef CONFIG_ROLLBACK -#define NUM_EC_FMAP_AREAS_ROLLBACK 1 -#else -#define NUM_EC_FMAP_AREAS_ROLLBACK 0 -#endif -#ifdef CONFIG_RW_B -# ifdef CONFIG_RWSIG_TYPE_RWSIG -# define NUM_EC_FMAP_AREAS_RW_B 2 -# else -# define NUM_EC_FMAP_AREAS_RW_B 1 -# endif -#else -#define NUM_EC_FMAP_AREAS_RW_B 0 -#endif - -#define NUM_EC_FMAP_AREAS (7 + \ - NUM_EC_FMAP_AREAS_RWSIG + \ - NUM_EC_FMAP_AREAS_ROLLBACK + \ - NUM_EC_FMAP_AREAS_RW_B) - -const struct _ec_fmap { - struct fmap_header header; - struct fmap_area_header area[NUM_EC_FMAP_AREAS]; -} ec_fmap __keep __attribute__((section(".google"))) = { - /* Header */ - { - .fmap_signature = {'_', '_', 'F', 'M', 'A', 'P', '_', '_'}, - .fmap_ver_major = FMAP_VER_MAJOR, - .fmap_ver_minor = FMAP_VER_MINOR, - .fmap_base = CONFIG_PROGRAM_MEMORY_BASE, - .fmap_size = CONFIG_FLASH_SIZE_BYTES, - /* Used to distinguish the EC FMAP from other FMAPs */ - .fmap_name = "EC_FMAP", - .fmap_nareas = NUM_EC_FMAP_AREAS, - }, - - { - /* RO Firmware */ - { - /* - * Range of RO firmware to be updated. EC_RO - * section includes the bootloader section - * because it may need to be updated/paired - * with a different RO. Verified in factory - * finalization by hash. Should not have - * volatile data (ex, calibration results). - */ - .area_name = "EC_RO", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START, - .area_size = CONFIG_RO_SIZE + CONFIG_RO_STORAGE_OFF, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, - { - /* (Optional) RO firmware code. */ - .area_name = "FR_MAIN", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RO_STORAGE_OFF, - .area_size = CONFIG_RO_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, - { - /* - * RO firmware version ID. Must be NULL terminated - * ASCII, and padded with \0. - */ - .area_name = "RO_FRID", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RO_STORAGE_OFF + - RELATIVE_RO((uint32_t)__image_data_offset) + - offsetof(struct image_data, version), - .area_size = sizeof(current_image_data.version), - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, - - /* Other RO stuff: FMAP, WP, KEYS, etc. */ - { - .area_name = "FMAP", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RO_STORAGE_OFF + - RELATIVE_RO((uint32_t)&ec_fmap), - .area_size = sizeof(ec_fmap), - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, - { - /* - * The range for write protection, for factory - * finalization. Should include (may be identical to) - * EC_RO and aligned to hardware specification. - */ - .area_name = "WP_RO", - .area_offset = CONFIG_WP_STORAGE_OFF - - FMAP_REGION_START, - .area_size = CONFIG_WP_STORAGE_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, -#ifdef CONFIG_RWSIG_TYPE_RWSIG - { - /* RO public key address, for RW verification */ - .area_name = "KEY_RO", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RO_PUBKEY_ADDR - - CONFIG_PROGRAM_MEMORY_BASE, - .area_size = CONFIG_RO_PUBKEY_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, -#endif - - /* RW Firmware */ - { - /* The range of RW firmware to be auto-updated. */ - .area_name = "EC_RW", - .area_offset = CONFIG_EC_WRITABLE_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_STORAGE_OFF, - .area_size = CONFIG_RW_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, - { - /* - * RW firmware version ID. Must be NULL terminated - * ASCII, and padded with \0. - * TODO: Get the relative offset of - * __image_data_offset within our RW image to - * accommodate image asymmetry. - */ - .area_name = "RW_FWID", - .area_offset = CONFIG_EC_WRITABLE_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_STORAGE_OFF + - RELATIVE_RO((uint32_t)__image_data_offset) + - offsetof(struct image_data, version), - .area_size = sizeof(current_image_data.version), - .area_flags = FMAP_AREA_STATIC, - }, -#ifdef CONFIG_ROLLBACK - { - /* - * RW rollback version, 32-bit unsigned integer. - * TODO: Get the relative offset of - * __image_data_offset within our RW image to - * accommodate image asymmetry. - */ - .area_name = "RW_RBVER", - .area_offset = CONFIG_EC_WRITABLE_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_STORAGE_OFF + - RELATIVE_RO((uint32_t)__image_data_offset) + - offsetof(struct image_data, rollback_version), - .area_size = sizeof( - current_image_data.rollback_version), - .area_flags = FMAP_AREA_STATIC, - }, -#endif -#ifdef CONFIG_RWSIG_TYPE_RWSIG - { - /* RW image signature */ - .area_name = "SIG_RW", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_SIG_ADDR - - CONFIG_PROGRAM_MEMORY_BASE, - .area_size = CONFIG_RW_SIG_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, -#endif -#ifdef CONFIG_RW_B - /* RW Firmware */ - { - /* The range of RW firmware to be auto-updated. */ - .area_name = "EC_RW_B", - .area_offset = CONFIG_EC_WRITABLE_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_STORAGE_OFF + - CONFIG_RW_SIZE, - .area_size = CONFIG_RW_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, -#ifdef CONFIG_RWSIG_TYPE_RWSIG - { - /* RW_B image signature */ - .area_name = "SIG_RW_B", - .area_offset = CONFIG_EC_PROTECTED_STORAGE_OFF - - FMAP_REGION_START + CONFIG_RW_B_SIG_ADDR - - CONFIG_PROGRAM_MEMORY_BASE, - .area_size = CONFIG_RW_SIG_SIZE, - .area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO, - }, -#endif -#endif - } -}; |