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 <boot/coreboot_tables.h>
53 /** These are standard values for the known compression
54 alogrithms that coreboot knows about for stages and
55 payloads. Of course, other LAR users can use whatever
56 values they want, as long as they understand them. */
58 #define CBFS_COMPRESS_NONE 0
59 #define CBFS_COMPRESS_LZMA 1
60 #define CBFS_COMPRESS_NRV2B 2
62 /** These are standard component types for well known
63 components (i.e - those that coreboot needs to consume.
64 Users are welcome to use any other value for their
67 #define CBFS_TYPE_STAGE 0x10
68 #define CBFS_TYPE_PAYLOAD 0x20
69 #define CBFS_TYPE_OPTIONROM 0x30
71 /** this is the master cbfs header - it need to be
72 located somewhere in the bootblock. Where it
73 actually lives is up to coreboot. A pointer to
74 this header will live at 0xFFFFFFFc, so we can
77 #define CBFS_HEADER_MAGIC 0x4F524243
78 #define CBFS_HEADPTR_ADDR 0xFFFFFFFc
79 #define VERSION1 0x31313131
89 } __attribute__((packed));
91 /** This is a component header - every entry in the CBFS
92 will have this header.
94 This is how the component is arranged in the ROM:
98 -------------- <- sizeof(struct component)
100 -------------- <- offset
103 -------------- <- offset + len
106 #define CBFS_FILE_MAGIC "LARCHIVE"
114 } __attribute__((packed));
116 /*** Component sub-headers ***/
118 /* Following are component sub-headers for the "standard"
121 /** This is the sub-header for stage components. Stages are
122 loaded by coreboot during the normal boot process */
125 u32 compression; /** Compression type */
126 u64 entry; /** entry point */
127 u64 load; /** Where to load in memory */
128 u32 len; /** length of data to load */
129 u32 memlen; /** total length of object in memory */
130 } __attribute__((packed));
132 /** this is the sub-header for payload components. Payloads
133 are loaded by coreboot at the end of the boot process */
135 struct cbfs_payload_segment {
142 } __attribute__((packed));
144 struct cbfs_payload {
145 struct cbfs_payload_segment segments;
148 #define PAYLOAD_SEGMENT_CODE 0x45444F43
149 #define PAYLOAD_SEGMENT_DATA 0x41544144
150 #define PAYLOAD_SEGMENT_BSS 0x20535342
151 #define PAYLOAD_SEGMENT_PARAMS 0x41524150
152 #define PAYLOAD_SEGMENT_ENTRY 0x52544E45
154 struct cbfs_optionrom {
157 } __attribute__((packed));
159 #define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file))
160 #define CBFS_SUBHEADER(_p) ( (void *) ((((u8 *) (_p)) + ntohl((_p)->offset))) )
162 void * cbfs_load_payload(struct lb_memory *lb_mem, const char *name);
163 void * cbfs_load_stage(const char *name);
164 int cbfs_execute_stage(const char *name);
165 void * cbfs_get_file(const char *name);
166 void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest);
167 int run_address(void *f);
169 struct cbfs_stage *cbfs_find_file(const char *name, int type);