/*
- * cbfstool
- *
- * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
+ * Copyright (C) 2009 coresystems GmbH
+ * written by Patrick Georgi <patrick.georgi@coresystems.de>
*
* 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
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
-#ifndef _CBFS_H_
-#define _CBFS_H_
-
-/** These are standard values for the known compression
- alogrithms that coreboot knows about for stages and
- payloads. Of course, other LAR users can use whatever
- values they want, as long as they understand them. */
-
-#define CBFS_COMPRESS_NONE 0
-#define CBFS_COMPRESS_LZMA 1
-#define CBFS_COMPRESS_NRV2B 2
-
-/** These are standard component types for well known
- components (i.e - those that coreboot needs to consume.
- Users are welcome to use any other value for their
- components */
-
-#define CBFS_COMPONENT_STAGE 0x10
-#define CBFS_COMPONENT_PAYLOAD 0x20
-#define CBFS_COMPONENT_OPTIONROM 0x30
-
-/* The deleted type is chosen to be a value
- * that can be written in a FLASH from all other
- * values.
- */
-#define CBFS_COMPONENT_DELETED 0
-
-/* for all known FLASH, this value can be changed
- * to all other values. This allows NULL files to be
- * changed without a block erase
- */
-#define CBFS_COMPONENT_NULL 0xFFFFFFFF
-
-/** this is the master cbfs header - it need to be
- located somewhere in the bootblock. Where it
- actually lives is up to coreboot. A pointer to
- this header will live at 0xFFFFFFF4, so we can
- easily find it. */
-
-#define HEADER_MAGIC 0x4F524243
-
-/* this is a version that gives the right answer in any endian-ness */
-#define VERSION1 0x31313131
+#include <stdint.h>
struct cbfs_header {
- unsigned int magic;
- unsigned int version;
- unsigned int romsize;
- unsigned int bootblocksize;
- unsigned int align;
- unsigned int offset;
- unsigned int pad[2];
+ uint32_t magic;
+ uint32_t version;
+ uint32_t romsize;
+ uint32_t bootblocksize;
+ uint32_t align;
+ uint32_t offset;
+ uint32_t pad[2];
} __attribute__ ((packed));
-/** This is a component header - every entry in the CBFS
- will have this header.
-
- This is how the component is arranged in the ROM:
-
- -------------- <- 0
- component header
- -------------- <- sizeof(struct component)
- component name
- -------------- <- offset
- data
- ...
- -------------- <- offset + len
-*/
-
-#define COMPONENT_MAGIC "LARCHIVE"
-
struct cbfs_file {
char magic[8];
- unsigned int len;
- unsigned int type;
- unsigned int checksum;
- unsigned int offset;
+ uint32_t len;
+ uint32_t type;
+ uint32_t checksum;
+ uint32_t offset;
} __attribute__ ((packed));
-/*** Component sub-headers ***/
-
-/* Following are component sub-headers for the "standard"
- component types */
-
-/** This is the sub-header for stage components. Stages are
- loaded by coreboot during the normal boot process */
-
struct cbfs_stage {
- unsigned int compression; /** Compression type */
- unsigned long long entry; /** entry point */
- unsigned long long load; /** Where to load in memory */
- unsigned int len; /** length of data to load */
- unsigned int memlen; /** total length of object in memory */
+ unsigned int compression;
+ unsigned long long entry;
+ unsigned long long load;
+ unsigned int len;
+ unsigned int memlen;
} __attribute__ ((packed));
-/** this is the sub-header for payload components. Payloads
- are loaded by coreboot at the end of the boot process */
+#define PAYLOAD_SEGMENT_CODE 0x45444F43
+#define PAYLOAD_SEGMENT_DATA 0x41544144
+#define PAYLOAD_SEGMENT_BSS 0x20535342
+#define PAYLOAD_SEGMENT_PARAMS 0x41524150
+#define PAYLOAD_SEGMENT_ENTRY 0x52544E45
struct cbfs_payload_segment {
unsigned int type;
struct cbfs_payload {
struct cbfs_payload_segment segments;
-};
+} __attribute__ ((packed));
+
+/** These are standard component types for well known
+ components (i.e - those that coreboot needs to consume.
+ Users are welcome to use any other value for their
+ components */
+
+#define CBFS_COMPONENT_STAGE 0x10
+#define CBFS_COMPONENT_PAYLOAD 0x20
+#define CBFS_COMPONENT_OPTIONROM 0x30
+#define CBFS_COMPONENT_BOOTSPLASH 0x40
+#define CBFS_COMPONENT_RAW 0x50
+#define CBFS_COMPONENT_VSA 0x51
+#define CBFS_COMPONENT_MBI 0x52
+#define CBFS_COMPONENT_MICROCODE 0x53
+#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa
+#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa
-#define PAYLOAD_SEGMENT_CODE 0x45444F43
-#define PAYLOAD_SEGMENT_DATA 0x41544144
-#define PAYLOAD_SEGMENT_BSS 0x20535342
-#define PAYLOAD_SEGMENT_PARAMS 0x41524150
-#define PAYLOAD_SEGMENT_ENTRY 0x52544E45
+/* The deleted type is chosen to be a value
+ * that can be written in a FLASH from all other
+ * values.
+ */
+#define CBFS_COMPONENT_DELETED 0
-#define CBFS_NAME(_c) (((unsigned char *) (_c)) + sizeof(struct cbfs_file))
+/* for all known FLASH, this value can be changed
+ * to all other values. This allows NULL files to be
+ * changed without a block erase
+ */
+#define CBFS_COMPONENT_NULL 0xFFFFFFFF
-#endif
+int cbfs_file_header(uint32_t physaddr);
+struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size);
projects / coreboot.git / blobdiff