147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <image.h>
|
|
#include "imagetool.h"
|
|
|
|
/* magic ='S' 'T' 'M' 0x32 */
|
|
#define HEADER_MAGIC be32_to_cpu(0x53544D32)
|
|
#define VER_MAJOR_IDX 2
|
|
#define VER_MINOR_IDX 1
|
|
#define VER_VARIANT_IDX 0
|
|
#define HEADER_VERSION_V1 0x1
|
|
/* default option : bit0 => no signature */
|
|
#define HEADER_DEFAULT_OPTION (cpu_to_le32(0x00000001))
|
|
|
|
struct stm32_header {
|
|
uint32_t magic_number;
|
|
uint32_t image_signature[64 / 4];
|
|
uint32_t image_checksum;
|
|
uint8_t header_version[4];
|
|
uint32_t image_length;
|
|
uint32_t image_entry_point;
|
|
uint32_t reserved1;
|
|
uint32_t load_address;
|
|
uint32_t reserved2;
|
|
uint32_t version_number;
|
|
uint32_t option_flags;
|
|
uint32_t ecdsa_algorithm;
|
|
uint32_t ecdsa_public_key[64 / 4];
|
|
uint32_t padding[84 / 4];
|
|
};
|
|
|
|
static struct stm32_header stm32image_header;
|
|
|
|
static void stm32image_default_header(struct stm32_header *ptr)
|
|
{
|
|
if (!ptr)
|
|
return;
|
|
|
|
ptr->magic_number = HEADER_MAGIC;
|
|
ptr->header_version[VER_MAJOR_IDX] = HEADER_VERSION_V1;
|
|
ptr->option_flags = HEADER_DEFAULT_OPTION;
|
|
ptr->ecdsa_algorithm = 1;
|
|
}
|
|
|
|
static uint32_t stm32image_checksum(void *start, uint32_t len)
|
|
{
|
|
uint32_t csum = 0;
|
|
uint32_t hdr_len = sizeof(struct stm32_header);
|
|
uint8_t *p;
|
|
|
|
if (len < hdr_len)
|
|
return 0;
|
|
|
|
p = start + hdr_len;
|
|
len -= hdr_len;
|
|
|
|
while (len > 0) {
|
|
csum += *p;
|
|
p++;
|
|
len--;
|
|
}
|
|
|
|
return csum;
|
|
}
|
|
|
|
static int stm32image_check_image_types(uint8_t type)
|
|
{
|
|
if (type == IH_TYPE_STM32IMAGE)
|
|
return EXIT_SUCCESS;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
static int stm32image_verify_header(unsigned char *ptr, int image_size,
|
|
struct image_tool_params *params)
|
|
{
|
|
struct stm32_header *stm32hdr = (struct stm32_header *)ptr;
|
|
int i;
|
|
|
|
if (image_size < sizeof(struct stm32_header))
|
|
return -1;
|
|
if (stm32hdr->magic_number != HEADER_MAGIC)
|
|
return -1;
|
|
if (stm32hdr->header_version[VER_MAJOR_IDX] != HEADER_VERSION_V1)
|
|
return -1;
|
|
if (stm32hdr->reserved1 || stm32hdr->reserved2)
|
|
return -1;
|
|
for (i = 0; i < (sizeof(stm32hdr->padding) / 4); i++) {
|
|
if (stm32hdr->padding[i] != 0)
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void stm32image_print_header(const void *ptr)
|
|
{
|
|
struct stm32_header *stm32hdr = (struct stm32_header *)ptr;
|
|
|
|
printf("Image Type : STMicroelectronics STM32 V%d.%d\n",
|
|
stm32hdr->header_version[VER_MAJOR_IDX],
|
|
stm32hdr->header_version[VER_MINOR_IDX]);
|
|
printf("Image Size : %lu bytes\n",
|
|
(unsigned long)le32_to_cpu(stm32hdr->image_length));
|
|
printf("Image Load : 0x%08x\n",
|
|
le32_to_cpu(stm32hdr->load_address));
|
|
printf("Entry Point : 0x%08x\n",
|
|
le32_to_cpu(stm32hdr->image_entry_point));
|
|
printf("Checksum : 0x%08x\n",
|
|
le32_to_cpu(stm32hdr->image_checksum));
|
|
printf("Option : 0x%08x\n",
|
|
le32_to_cpu(stm32hdr->option_flags));
|
|
}
|
|
|
|
static void stm32image_set_header(void *ptr, struct stat *sbuf, int ifd,
|
|
struct image_tool_params *params)
|
|
{
|
|
struct stm32_header *stm32hdr = (struct stm32_header *)ptr;
|
|
|
|
stm32image_default_header(stm32hdr);
|
|
|
|
stm32hdr->load_address = cpu_to_le32(params->addr);
|
|
stm32hdr->image_entry_point = cpu_to_le32(params->ep);
|
|
stm32hdr->image_length = cpu_to_le32((uint32_t)sbuf->st_size -
|
|
sizeof(struct stm32_header));
|
|
stm32hdr->image_checksum = stm32image_checksum(ptr, sbuf->st_size);
|
|
}
|
|
|
|
/*
|
|
* stm32image parameters
|
|
*/
|
|
U_BOOT_IMAGE_TYPE(
|
|
stm32image,
|
|
"STMicroelectronics STM32MP Image support",
|
|
sizeof(struct stm32_header),
|
|
(void *)&stm32image_header,
|
|
NULL,
|
|
stm32image_verify_header,
|
|
stm32image_print_header,
|
|
stm32image_set_header,
|
|
NULL,
|
|
stm32image_check_image_types,
|
|
NULL,
|
|
NULL
|
|
);
|