f6208bde46
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29733 a1c6a512-1295-4272-9138-f99709370657
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#define _ISOC99_SOURCE /* snprintf() */
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#include <sys/types.h>
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#include <sys/stat.h>
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#define BLOCK_SIZE 16
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struct sb_version_t
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{
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uint16_t major;
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uint16_t pad0;
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uint16_t minor;
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uint16_t pad1;
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uint16_t revision;
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uint16_t pad2;
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};
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struct sb_header_t
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{
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uint8_t sha1_header[20]; /* SHA-1 of the rest of the header */
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uint8_t signature[4]; /* Signature "STMP" */
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uint8_t major_ver; /* Should be 1 */
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uint8_t minor_ver; /* Should be 1 */
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uint16_t flags;
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uint32_t image_size; /* In blocks (=16bytes) */
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uint32_t first_boot_tag_off; /* Offset in blocks */
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uint32_t first_boot_sec_id; /* First bootable section ID */
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uint16_t nr_keys; /* Number of encryption keys */
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uint16_t key_dict_off; /* Offset to key dictionary (in blocks) */
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uint16_t header_size; /* In blocks */
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uint16_t nr_sections; /* Number of sections */
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uint16_t sec_hdr_size; /* Section header size (in blocks) */
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uint8_t rand_pad0[6]; /* Random padding */
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uint64_t timestamp; /* In microseconds since 2000/1/1 00:00:00 */
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struct sb_version_t product_ver;
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struct sb_version_t component_ver;
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uint16_t drive_tag; /* Unknown meaning */
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uint8_t rand_pad1[6]; /* Random padding */
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} __attribute__((packed));
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struct sb_section_header_t
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{
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uint32_t identifier;
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uint32_t offset; /* In blocks */
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uint32_t size; /* In blocks */
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uint32_t flags;
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} __attribute__((packed));
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struct sb_key_dictionary_entry_t
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{
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uint8_t hdr_cbc_mac[16]; /* CBC-MAC of the header */
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uint8_t key[16]; /* Actual AES Key (encrypted by the global key) */
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} __attribute__((packed));
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#define IMAGE_MAJOR_VERSION 1
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#define IMAGE_MINOR_VERSION 1
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#define SECTION_BOOTABLE (1 << 0)
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#define SECTION_CLEARTEXT (1 << 1)
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#define SB_INST_NOP 0x0
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#define SB_INST_TAG 0x1
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#define SB_INST_LOAD 0x2
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#define SB_INST_FILL 0x3
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#define SB_INST_JUMP 0x4
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#define SB_INST_CALL 0x5
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#define SB_INST_MODE 0x6
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struct sb_instruction_header_t
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{
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uint8_t checksum;
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uint8_t opcode;
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uint16_t zero_except_for_tag;
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} __attribute__((packed));
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struct sb_instruction_load_t
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{
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struct sb_instruction_header_t hdr;
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uint32_t addr;
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uint32_t len;
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uint32_t crc;
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} __attribute__((packed));
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struct sb_instruction_fill_t
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{
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struct sb_instruction_header_t hdr;
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uint32_t addr;
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uint32_t len;
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uint32_t pattern;
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} __attribute__((packed));
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struct sb_instruction_call_t
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{
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struct sb_instruction_header_t hdr;
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uint32_t addr;
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uint32_t zero;
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uint32_t arg;
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} __attribute__((packed));
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