| /* |
| * Copyright 2016 The ChromiumOS Authors |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #ifndef __EC_CHIP_G_FLASH_INFO_H |
| #define __EC_CHIP_G_FLASH_INFO_H |
| |
| #include <stddef.h> |
| |
| #include "signed_header.h" |
| |
| /* |
| * Info1 space available to the app firmware is split in four equal size |
| * areas, used as follows: |
| * |
| * Area 0 - RO rollback prevention |
| * Area 1 - RW rollback prevention |
| * Area 2 - Board specific stuff |
| * Area 3 - Crypto scratch |
| */ |
| #define INFO_AREA_SIZE (INFO_MAX * 4) |
| #define INFO_TOTAL_SIZE (INFO_AREA_SIZE * 4) |
| |
| #define INFO_RO_MAP_OFFSET 0 |
| #define INFO_RO_MAP_SIZE INFO_AREA_SIZE |
| |
| #define INFO_RW_MAP_OFFSET (INFO_RO_MAP_OFFSET + INFO_RO_MAP_SIZE) |
| #define INFO_RW_MAP_SIZE INFO_AREA_SIZE |
| |
| #define INFO_BOARD_SPACE_OFFSET (INFO_RW_MAP_OFFSET + INFO_RW_MAP_SIZE) |
| |
| /* This in fact enables both read and write. */ |
| void flash_info_write_enable(void); |
| void flash_info_write_disable(void); |
| int flash_info_physical_write(int byte_offset, int num_bytes, const char *data); |
| int flash_physical_info_read_word(int byte_offset, uint32_t *dst); |
| |
| /* Enable or disable write access to the backup RO section. */ |
| void flash_open_ro_window(uint32_t offset, size_t size_b); |
| void flash_close_ro_window(void); |
| |
| #endif /* ! __EC_CHIP_G_FLASH_INFO_H */ |