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/* Copyright 2015 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.
*/
#ifndef __CROS_EC_CONFIG_FLASH_LAYOUT_H
#define __CROS_EC_CONFIG_FLASH_LAYOUT_H
/*
* mec1322 flash layout:
* - Non memory-mapped, external SPI.
* - RW image at the beginning of writable region.
* - Bootloader at the beginning of protected region, followed by RO image.
* - Loader + (RO | RW) loaded into program memory.
*/
/* Non-memmapped, external SPI */
#define CONFIG_EXTERNAL_STORAGE
#undef CONFIG_MAPPED_STORAGE
#undef CONFIG_FLASH_PSTATE
#define CONFIG_SPI_FLASH
/* EC region of SPI resides at end of ROM, protected region follows writable */
#define CONFIG_EC_PROTECTED_STORAGE_OFF (CONFIG_FLASH_SIZE_BYTES - 0x20000)
#define CONFIG_EC_PROTECTED_STORAGE_SIZE 0x20000
#define CONFIG_EC_WRITABLE_STORAGE_OFF (CONFIG_FLASH_SIZE_BYTES - 0x40000)
#define CONFIG_EC_WRITABLE_STORAGE_SIZE 0x20000
/* Loader resides at the beginning of program memory */
#define CONFIG_LOADER_MEM_OFF 0
#define CONFIG_LOADER_SIZE 0xC00
/* Write protect Loader and RO Image */
#define CONFIG_WP_STORAGE_OFF CONFIG_EC_PROTECTED_STORAGE_OFF
/*
* Write protect 128k section of 256k physical flash which contains loader
* and RO Images.
*/
#define CONFIG_WP_STORAGE_SIZE CONFIG_EC_PROTECTED_STORAGE_SIZE
/*
* RO / RW images follow the loader in program memory. Either RO or RW
* image will be loaded -- both cannot be loaded at the same time.
*/
#define CONFIG_RO_MEM_OFF (CONFIG_LOADER_MEM_OFF + \
CONFIG_LOADER_SIZE)
#define CONFIG_RO_SIZE (97 * 1024)
#define CONFIG_RW_MEM_OFF CONFIG_RO_MEM_OFF
#define CONFIG_RW_SIZE CONFIG_RO_SIZE
/* WP region consists of second half of SPI, and begins with the boot header */
#define CONFIG_BOOT_HEADER_STORAGE_OFF 0
#define CONFIG_BOOT_HEADER_STORAGE_SIZE 0x240
/* Loader / lfw image immediately follows the boot header on SPI */
#define CONFIG_LOADER_STORAGE_OFF (CONFIG_BOOT_HEADER_STORAGE_OFF + \
CONFIG_BOOT_HEADER_STORAGE_SIZE)
/* RO image immediately follows the loader image */
#define CONFIG_RO_STORAGE_OFF (CONFIG_LOADER_STORAGE_OFF + \
CONFIG_LOADER_SIZE)
/* RW image starts at the beginning of SPI */
#define CONFIG_RW_STORAGE_OFF 0
#endif /* __CROS_EC_CONFIG_FLASH_LAYOUT_H */
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