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eab2c81949
Current cbfstool implementation is relying on global variables to pass processed data, and the calculation of address is based on x86 architecture (ex, always assuming 0x0000 as invalid address), not easy to be used on platforms without top-aligned memory mapping. This CL is a first step to start a new cbfstool without global variables, and to prevent assuming memory layout in x86 mode. The first published APIs are for reading and writing existing CBFS ROM image files (and to find file entries in a ROM file). Read cbfs_image.h for detail usage of each API function. Change-Id: I28c737c8f290e51332119188248ac9e28042024c Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2194 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*
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* Copyright (C) 2009 coresystems GmbH
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* written by Patrick Georgi <patrick.georgi@coresystems.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef __CBFS_H
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#define __CBFS_H
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#include <stdint.h>
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#define CBFS_HEADER_MAGIC 0x4F524243
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#define CBFS_HEADPTR_ADDR_X86 0xFFFFFFFC
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#define CBFS_HEADER_VERSION1 0x31313131
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#define CBFS_HEADER_VERSION2 0x31313132
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#define CBFS_HEADER_VERSION CBFS_HEADER_VERSION2
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struct cbfs_header {
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uint32_t magic;
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uint32_t version;
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uint32_t romsize;
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uint32_t bootblocksize;
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uint32_t align;
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uint32_t offset;
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uint32_t architecture; /* Version 2 */
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uint32_t pad[1];
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} __attribute__ ((packed));
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#define CBFS_ARCHITECTURE_UNKNOWN 0xFFFFFFFF
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#define CBFS_ARCHITECTURE_X86 0x00000001
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#define CBFS_ARCHITECTURE_ARMV7 0x00000010
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#define CBFS_FILE_MAGIC "LARCHIVE"
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struct cbfs_file {
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uint8_t magic[8];
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uint32_t len;
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uint32_t type;
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uint32_t checksum;
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uint32_t offset;
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} __attribute__ ((packed));
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struct cbfs_stage {
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uint32_t compression;
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uint64_t entry;
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uint64_t load;
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uint32_t len;
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uint32_t memlen;
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} __attribute__ ((packed));
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#define PAYLOAD_SEGMENT_CODE 0x45444F43
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#define PAYLOAD_SEGMENT_DATA 0x41544144
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#define PAYLOAD_SEGMENT_BSS 0x20535342
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#define PAYLOAD_SEGMENT_PARAMS 0x41524150
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#define PAYLOAD_SEGMENT_ENTRY 0x52544E45
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struct cbfs_payload_segment {
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uint32_t type;
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uint32_t compression;
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uint32_t offset;
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uint64_t load_addr;
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uint32_t len;
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uint32_t mem_len;
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} __attribute__ ((packed));
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struct cbfs_payload {
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struct cbfs_payload_segment segments;
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} __attribute__ ((packed));
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/** These are standard component types for well known
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components (i.e - those that coreboot needs to consume.
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Users are welcome to use any other value for their
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components */
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#define CBFS_COMPONENT_STAGE 0x10
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#define CBFS_COMPONENT_PAYLOAD 0x20
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#define CBFS_COMPONENT_OPTIONROM 0x30
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#define CBFS_COMPONENT_BOOTSPLASH 0x40
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#define CBFS_COMPONENT_RAW 0x50
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#define CBFS_COMPONENT_VSA 0x51
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#define CBFS_COMPONENT_MBI 0x52
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#define CBFS_COMPONENT_MICROCODE 0x53
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#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa
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#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa
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/* The deleted type is chosen to be a value
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* that can be written in a FLASH from all other
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* values.
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*/
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#define CBFS_COMPONENT_DELETED 0
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/* for all known FLASH, this value can be changed
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* to all other values. This allows NULL files to be
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* changed without a block erase
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*/
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#define CBFS_COMPONENT_NULL 0xFFFFFFFF
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int cbfs_file_header(unsigned long physaddr);
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#define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) )
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struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size);
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#endif
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