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/*
* Copyright (c) 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 <stdint.h>
#include "config.h"
/* FMAP structs. See http://code.google.com/p/flashmap/wiki/FmapSpec */
#define FMAP_NAMELEN 32
#define FMAP_SIGNATURE "__FMAP__"
#define FMAP_SIGNATURE_SIZE 8
#define FMAP_VER_MAJOR 1
#define FMAP_VER_MINOR 0
typedef struct _FmapHeader {
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;
} __attribute__((packed)) FmapHeader;
#define FMAP_AREA_STATIC (1 << 0) /* can be checksummed */
#define FMAP_AREA_COMPRESSED (1 << 1) /* may be compressed */
#define FMAP_AREA_RO (1 << 2) /* writes may fail */
typedef struct _FmapAreaHeader {
uint32_t area_offset;
uint32_t area_size;
char area_name[FMAP_NAMELEN];
uint16_t area_flags;
} __attribute__((packed)) FmapAreaHeader;
#define NUM_EC_FMAP_AREAS 17
const struct _ec_fmap {
FmapHeader header;
FmapAreaHeader area[NUM_EC_FMAP_AREAS];
} ec_fmap __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_FLASH_BASE,
.fmap_size = CONFIG_FLASH_SIZE,
.fmap_name = "EC_FMAP",
.fmap_nareas = NUM_EC_FMAP_AREAS,
},
{
/* RO Firmware */
{
.area_name = "RO_SECTION",
.area_offset = CONFIG_SECTION_RO_OFF,
.area_size = CONFIG_SECTION_RO_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
.area_name = "BOOT_STUB",
.area_offset = CONFIG_FW_RO_OFF,
.area_size = CONFIG_FW_RO_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
.area_name = "RO_FRID", /* FIXME: Where is it? */
.area_offset = CONFIG_FW_RO_OFF,
.area_size = 0,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
/* Other RO stuff: FMAP, GBB, etc. */
{
.area_name = "ROOT_KEY",
.area_offset = CONFIG_VBOOT_ROOTKEY_OFF,
.area_size = CONFIG_VBOOT_ROOTKEY_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
.area_name = "FMAP",
.area_offset = (uint32_t)&ec_fmap,
.area_size = sizeof(ec_fmap),
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
/* A dummy region to identify it as EC firmware */
.area_name = "EC_IMAGE",
.area_offset = CONFIG_SECTION_RO_OFF,
.area_size = 0, /* Always zero */
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
/* The range for write protect, for lagecy firmware
* updater. Should be identical to 'WP_RO'. */
.area_name = "EC_RO",
.area_offset = CONFIG_SECTION_RO_OFF,
.area_size = CONFIG_SECTION_RO_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
/* The range for autoupdate to update A/B at once. */
.area_name = "EC_RW",
.area_offset = CONFIG_SECTION_A_OFF,
.area_size = CONFIG_SECTION_A_SIZE
+ CONFIG_SECTION_B_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
{
/* The range for write protect, for factory finalize
* test case. Should be identical to 'EC_RO'. */
.area_name = "WP_RO",
.area_offset = CONFIG_SECTION_RO_OFF,
.area_size = CONFIG_SECTION_RO_SIZE,
.area_flags = FMAP_AREA_STATIC | FMAP_AREA_RO,
},
/* Firmware A */
{
.area_name = "RW_SECTION_A",
.area_offset = CONFIG_SECTION_A_OFF,
.area_size = CONFIG_SECTION_A_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "FW_MAIN_A",
.area_offset = CONFIG_FW_A_OFF,
.area_size = CONFIG_FW_A_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "RW_FWID_A", /* FIXME: Where is it? */
.area_offset = CONFIG_FW_A_OFF,
.area_size = 0,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "VBLOCK_A",
.area_offset = CONFIG_VBLOCK_A_OFF,
.area_size = CONFIG_VBLOCK_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
#ifndef CONFIG_NO_RW_B
/* Firmware B */
{
.area_name = "RW_SECTION_B",
.area_offset = CONFIG_SECTION_B_OFF,
.area_size = CONFIG_SECTION_B_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "FW_MAIN_B",
.area_offset = CONFIG_FW_B_OFF,
.area_size = CONFIG_FW_B_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "RW_FWID_B", /* FIXME: Where is it? */
.area_offset = CONFIG_FW_B_OFF,
.area_size = 0,
.area_flags = FMAP_AREA_STATIC,
},
{
.area_name = "VBLOCK_B",
.area_offset = CONFIG_VBLOCK_B_OFF,
.area_size = CONFIG_VBLOCK_SIZE,
.area_flags = FMAP_AREA_STATIC,
},
#endif /* CONFIG_NO_RW_B */
}
};
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