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/*
* Freescale i.MX28 SB image generator
*
* Copyright (C) 2012 Marek Vasut <marex@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __MXSSB_H__
#define __MXSSB_H__
#include <stdint.h>
#include <arpa/inet.h>
#define SB_BLOCK_SIZE 16
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
struct sb_boot_image_version {
uint16_t major;
uint16_t pad0;
uint16_t minor;
uint16_t pad1;
uint16_t revision;
uint16_t pad2;
};
struct sb_boot_image_header {
union {
/* SHA1 of the header. */
uint8_t digest[20];
struct {
/* CBC-MAC initialization vector. */
uint8_t iv[16];
uint8_t extra[4];
};
};
/* 'STMP' */
uint8_t signature1[4];
/* Major version of the image format. */
uint8_t major_version;
/* Minor version of the image format. */
uint8_t minor_version;
/* Flags associated with the image. */
uint16_t flags;
/* Size of the image in 16b blocks. */
uint32_t image_blocks;
/* Offset of the first tag in 16b blocks. */
uint32_t first_boot_tag_block;
/* ID of the section to boot from. */
uint32_t first_boot_section_id;
/* Amount of crypto keys. */
uint16_t key_count;
/* Offset to the key dictionary in 16b blocks. */
uint16_t key_dictionary_block;
/* Size of this header in 16b blocks. */
uint16_t header_blocks;
/* Amount of section headers. */
uint16_t section_count;
/* Section header size in 16b blocks. */
uint16_t section_header_size;
/* Padding to align timestamp to uint64_t. */
uint8_t padding0[2];
/* 'sgtl' (since v1.1) */
uint8_t signature2[4];
/* Image generation date, in microseconds since 1.1.2000 . */
uint64_t timestamp_us;
/* Product version. */
struct sb_boot_image_version
product_version;
/* Component version. */
struct sb_boot_image_version
component_version;
/* Drive tag for the system drive. (since v1.1) */
uint16_t drive_tag;
/* Padding. */
uint8_t padding1[6];
};
#define SB_VERSION_MAJOR 1
#define SB_VERSION_MINOR 1
/* Enable to HTLLC boot report. */
#define SB_IMAGE_FLAG_DISPLAY_PROGRESS (1 << 0)
#define SB_IMAGE_FLAGS_MASK SB_IMAGE_FLAG_DISPLAY_PROGRESS
struct sb_key_dictionary_key {
/* The CBC-MAC of image and sections header. */
uint8_t cbc_mac[SB_BLOCK_SIZE];
/* The AES key encrypted by image key (zero). */
uint8_t key[SB_BLOCK_SIZE];
};
struct sb_ivt_header {
uint32_t header;
uint32_t entry;
uint32_t reserved1;
uint32_t dcd;
uint32_t boot_data;
uint32_t self;
uint32_t csf;
uint32_t reserved2;
};
#define SB_HAB_IVT_TAG 0xd1UL
#define SB_HAB_DCD_TAG 0xd2UL
#define SB_HAB_VERSION 0x40UL
/*
* The "size" field in the IVT header is not naturally aligned,
* use this macro to fill first 4 bytes of the IVT header without
* causing issues on some systems (esp. M68k, PPC, MIPS-BE, ARM-BE).
*/
static inline uint32_t sb_hab_ivt_header(void)
{
uint32_t ret = 0;
ret |= SB_HAB_IVT_TAG << 24;
ret |= sizeof(struct sb_ivt_header) << 16;
ret |= SB_HAB_VERSION;
return htonl(ret);
}
struct sb_sections_header {
/* Section number. */
uint32_t section_number;
/* Offset of this sections first instruction after "TAG". */
uint32_t section_offset;
/* Size of the section in 16b blocks. */
uint32_t section_size;
/* Section flags. */
uint32_t section_flags;
};
#define SB_SECTION_FLAG_BOOTABLE (1 << 0)
struct sb_command {
struct {
uint8_t checksum;
uint8_t tag;
uint16_t flags;
#define ROM_TAG_CMD_FLAG_ROM_LAST_TAG 0x1
#define ROM_LOAD_CMD_FLAG_DCD_LOAD 0x1 /* MX28 only */
#define ROM_JUMP_CMD_FLAG_HAB 0x1 /* MX28 only */
#define ROM_CALL_CMD_FLAG_HAB 0x1 /* MX28 only */
} header;
union {
struct {
uint32_t reserved[3];
} nop;
struct {
uint32_t section_number;
uint32_t section_length;
uint32_t section_flags;
} tag;
struct {
uint32_t address;
uint32_t count;
uint32_t crc32;
} load;
struct {
uint32_t address;
uint32_t count;
uint32_t pattern;
} fill;
struct {
uint32_t address;
uint32_t reserved;
/* Passed in register r0 before JUMP */
uint32_t argument;
} jump;
struct {
uint32_t address;
uint32_t reserved;
/* Passed in register r0 before CALL */
uint32_t argument;
} call;
struct {
uint32_t reserved1;
uint32_t reserved2;
uint32_t mode;
} mode;
};
};
/*
* Most of the mode names are same or at least similar
* on i.MX23 and i.MX28, but some of the mode names
* differ. The "name" field represents the mode name
* on i.MX28 as seen in Table 12-2 of the datasheet.
* The "altname" field represents the differently named
* fields on i.MX23 as seen in Table 35-3 of the
* datasheet.
*/
static const struct {
const char *name;
const char *altname;
const uint8_t mode;
} modetable[] = {
{ "USB", NULL, 0x00 },
{ "I2C", NULL, 0x01 },
{ "SPI2_FLASH", "SPI1_FLASH", 0x02 },
{ "SPI3_FLASH", "SPI2_FLASH", 0x03 },
{ "NAND_BCH", NULL, 0x04 },
{ "JTAG", NULL, 0x06 },
{ "SPI3_EEPROM", "SPI2_EEPROM", 0x08 },
{ "SD_SSP0", NULL, 0x09 },
{ "SD_SSP1", NULL, 0x0A }
};
enum sb_tag {
ROM_NOP_CMD = 0x00,
ROM_TAG_CMD = 0x01,
ROM_LOAD_CMD = 0x02,
ROM_FILL_CMD = 0x03,
ROM_JUMP_CMD = 0x04,
ROM_CALL_CMD = 0x05,
ROM_MODE_CMD = 0x06
};
struct sb_source_entry {
uint8_t tag;
uint32_t address;
uint32_t flags;
char *filename;
};
#endif /* __MXSSB_H__ */
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