2 * This file is part of the coreboot project.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
6 * This file is dual-licensed. You can choose between:
7 * - The GNU GPL, version 2, as published by the Free Software Foundation
8 * - The revised BSD license (without advertising clause)
10 * ---------------------------------------------------------------------------
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
23 * ---------------------------------------------------------------------------
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. The name of the author may not be used to endorse or promote products
33 * derived from this software without specific prior written permission.
35 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
36 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
38 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
39 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
40 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
41 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
43 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
44 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * ---------------------------------------------------------------------------
52 #include "coreboot_tables.h"
59 /** These are standard values for the known compression
60 alogrithms that coreboot knows about for stages and
61 payloads. Of course, other CBFS users can use whatever
62 values they want, as long as they understand them. */
64 #define CBFS_COMPRESS_NONE 0
65 #define CBFS_COMPRESS_LZMA 1
67 /** These are standard component types for well known
68 components (i.e - those that coreboot needs to consume.
69 Users are welcome to use any other value for their
72 #define CBFS_TYPE_STAGE 0x10
73 #define CBFS_TYPE_PAYLOAD 0x20
74 #define CBFS_TYPE_OPTIONROM 0x30
75 #define CBFS_TYPE_BOOTSPLASH 0x40
76 #define CBFS_TYPE_RAW 0x50
77 #define CBFS_TYPE_VSA 0x51
78 #define CBFS_TYPE_MBI 0x52
79 #define CBFS_TYPE_MICROCODE 0x53
80 #define CBFS_COMPONENT_CMOS_DEFAULT 0xaa
81 #define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa
84 /** this is the master cbfs header - it need to be
85 located somewhere in the bootblock. Where it
86 actually lives is up to coreboot. A pointer to
87 this header will live at 0xFFFFFFFc, so we can
90 #define CBFS_HEADER_MAGIC 0x4F524243
91 #define CBFS_HEADPTR_ADDR 0xFFFFFFFc
92 #define VERSION1 0x31313131
102 } __attribute__((packed
));
104 /** This is a component header - every entry in the CBFS
105 will have this header.
107 This is how the component is arranged in the ROM:
111 -------------- <- sizeof(struct component)
113 -------------- <- offset
116 -------------- <- offset + len
119 #define CBFS_FILE_MAGIC "LARCHIVE"
127 } __attribute__((packed
));
129 /*** Component sub-headers ***/
131 /* Following are component sub-headers for the "standard"
134 /** This is the sub-header for stage components. Stages are
135 loaded by coreboot during the normal boot process */
138 u32 compression
; /** Compression type */
139 u64 entry
; /** entry point */
140 u64 load
; /** Where to load in memory */
141 u32 len
; /** length of data to load */
142 u32 memlen
; /** total length of object in memory */
143 } __attribute__((packed
));
145 /** this is the sub-header for payload components. Payloads
146 are loaded by coreboot at the end of the boot process */
148 struct cbfs_payload_segment
{
155 } __attribute__((packed
));
157 struct cbfs_payload
{
158 struct cbfs_payload_segment segments
;
161 #define PAYLOAD_SEGMENT_CODE 0x45444F43
162 #define PAYLOAD_SEGMENT_DATA 0x41544144
163 #define PAYLOAD_SEGMENT_BSS 0x20535342
164 #define PAYLOAD_SEGMENT_PARAMS 0x41524150
165 #define PAYLOAD_SEGMENT_ENTRY 0x52544E45
167 struct cbfs_optionrom
{
170 } __attribute__((packed
));
172 #define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file))
173 #define CBFS_SUBHEADER(_p) ( (void *) ((((u8 *) (_p)) + ntohl((_p)->offset))) )
175 void * cbfs_get_file(const char *name
);
176 struct cbfs_file
*cbfs_find(const char *name
);
177 void *cbfs_find_file(const char *name
, unsigned int type
, unsigned int *len
);
179 void open_cbfs(const char *filename
);