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- // 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))
- /* default binary type for U-Boot */
- #define HEADER_TYPE_UBOOT (cpu_to_le32(0x00000000))
- 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[83 / 4];
- uint32_t binary_type;
- };
- 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 = cpu_to_le32(1);
- ptr->binary_type = HEADER_TYPE_UBOOT;
- }
- 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));
- printf("BinaryType : 0x%08x\n",
- le32_to_cpu(stm32hdr->binary_type));
- }
- 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 =
- cpu_to_le32(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
- );
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