Angel Pons | 32859fc | 2020-04-02 23:48:27 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* This file is part of the coreboot project. */ |
Aaron Durbin | 0424c95 | 2015-03-28 23:56:22 -0500 | [diff] [blame] | 3 | |
| 4 | #ifndef _FMAP_H_ |
| 5 | #define _FMAP_H_ |
| 6 | |
Julius Werner | 98eeb96 | 2019-12-11 15:47:42 -0800 | [diff] [blame] | 7 | #include <commonlib/bsd/fmap_serialized.h> |
Aaron Durbin | dc9f5cd | 2015-09-08 13:34:43 -0500 | [diff] [blame] | 8 | #include <commonlib/region.h> |
Aaron Durbin | 0424c95 | 2015-03-28 23:56:22 -0500 | [diff] [blame] | 9 | |
| 10 | /* Locate the named area in the fmap and fill in a region device representing |
| 11 | * that area. The region is a sub-region of the readonly boot media. Return |
| 12 | * 0 on success, < 0 on error. */ |
| 13 | int fmap_locate_area_as_rdev(const char *name, struct region_device *area); |
| 14 | |
Aaron Durbin | bccaab8 | 2016-08-12 12:42:04 -0500 | [diff] [blame] | 15 | /* Just like fmap_locate_area_as_rdev(), however the region device is |
| 16 | * created from the RW boot device. */ |
| 17 | int fmap_locate_area_as_rdev_rw(const char *name, struct region_device *area); |
| 18 | |
Aaron Durbin | 0424c95 | 2015-03-28 23:56:22 -0500 | [diff] [blame] | 19 | /* Locate the named area in the fmap and fill in a region with the |
| 20 | * offset and size of that area within the boot media. Return 0 on success, |
| 21 | * < 0 on error. */ |
| 22 | int fmap_locate_area(const char *name, struct region *r); |
| 23 | |
Patrick Georgi | 9952690 | 2015-07-09 11:27:44 +0200 | [diff] [blame] | 24 | /* Find fmap area name by offset and size. |
| 25 | * Return 0 on success, < 0 on error. */ |
| 26 | int fmap_find_region_name(const struct region * const ar, |
| 27 | char name[FMAP_STRLEN]); |
T Michael Turney | 19fcc89 | 2019-03-20 14:37:34 -0700 | [diff] [blame] | 28 | |
| 29 | /* Read fmap area into provided buffer. |
| 30 | * Return size read on success, < 0 on error. */ |
| 31 | ssize_t fmap_read_area(const char *name, void *buffer, size_t size); |
| 32 | |
| 33 | /* Write provided buffer into fmap area. |
| 34 | * Return size written on success, < 0 on error. */ |
| 35 | ssize_t fmap_overwrite_area(const char *name, const void *buffer, size_t size); |
Furquan Shaikh | b33a2b0 | 2019-09-26 23:51:46 -0700 | [diff] [blame] | 36 | |
| 37 | /* Get offset of FMAP in flash. */ |
| 38 | uint64_t get_fmap_flash_offset(void); |
| 39 | |
Aaron Durbin | 0424c95 | 2015-03-28 23:56:22 -0500 | [diff] [blame] | 40 | #endif |