summaryrefslogtreecommitdiff
path: root/src/include/cbfs.h
blob: 2d16aa761a1c64815dfea9bb0fca8d5ea4ec256a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/*
 * This file is part of the coreboot project.
 *
 * Copyright 2015 Google Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _CBFS_H_
#define _CBFS_H_

#include <commonlib/cbfs.h>
#include <program_loading.h>

/***********************************************
 * Perform CBFS operations on the boot device. *
 ***********************************************/

/* Return mapping of option ROM found in boot device. NULL on error. */
void *cbfs_boot_map_optionrom(uint16_t vendor, uint16_t device);
/* Load stage by name into memory. Returns entry address on success. NULL on
 * failure. */
void *cbfs_boot_load_stage_by_name(const char *name);
/* Locate file by name and optional type. Return 0 on success. < 0 on error. */
int cbfs_boot_locate(struct cbfsf *fh, const char *name, uint32_t *type);
/* Map file into memory leaking the mapping. Only should be used when
 * leaking mappings are a no-op. Returns NULL on error, else returns
 * the mapping and sets the size of the file. */
void *cbfs_boot_map_with_leak(const char *name, uint32_t type, size_t *size);
/* Locate file in a specific region of fmap. Return 0 on success. < 0 on error*/
int cbfs_locate_file_in_region(struct cbfsf *fh, const char *region_name,
		const char *name, uint32_t *type);
/* Load an arbitrary type file from CBFS into a buffer. Returns amount of
 * loaded bytes on success or 0 on error. File will get decompressed as
 * necessary.  Same decompression requirements as
 * cbfs_load_and_decompress(). */
size_t cbfs_boot_load_file(const char *name, void *buf, size_t buf_size,
	uint32_t type);
/* Load |in_size| bytes from |rdev| at |offset| to the |buffer_size| bytes
 * large |buffer|, decompressing it according to |compression| in the process.
 * Returns the decompressed file size, or 0 on error.
 * LZMA files will be mapped for decompression. LZ4 files will be decompressed
 * in-place with the buffer size requirements outlined in compression.h. */
size_t cbfs_load_and_decompress(const struct region_device *rdev, size_t offset,
	size_t in_size, void *buffer, size_t buffer_size, uint32_t compression);

/* Return the size and fill base of the memory pstage will occupy after
 * loaded.
 */
size_t cbfs_prog_stage_section(struct prog *pstage, uintptr_t *base);

/* Load stage into memory filling in prog. Return 0 on success. < 0 on error. */
int cbfs_prog_stage_load(struct prog *prog);

/* Returns the region device of the currently active CBFS.
   Return < 0 on error, 0 on success. */
int cbfs_boot_region_device(struct region_device *rdev);

#endif