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