diff options
Diffstat (limited to 'tools/stm32image')
| -rw-r--r-- | tools/stm32image/Makefile | 49 | ||||
| -rw-r--r-- | tools/stm32image/stm32image.c | 361 |
2 files changed, 410 insertions, 0 deletions
diff --git a/tools/stm32image/Makefile b/tools/stm32image/Makefile new file mode 100644 index 0000000..9c9b7b5 --- /dev/null +++ b/tools/stm32image/Makefile @@ -0,0 +1,49 @@ +# +# Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. +# +# SPDX-License-Identifier: BSD-3-Clause +# + +MAKE_HELPERS_DIRECTORY := ../../make_helpers/ +include ${MAKE_HELPERS_DIRECTORY}build_macros.mk +include ${MAKE_HELPERS_DIRECTORY}build_env.mk + +PROJECT := stm32image${BIN_EXT} +OBJECTS := stm32image.o +V := 0 + +HOSTCCFLAGS := -Wall -Werror -pedantic -std=c99 -D_GNU_SOURCE + +ifeq (${DEBUG},1) + HOSTCCFLAGS += -g -O0 -DDEBUG +else + HOSTCCFLAGS += -O2 +endif + +ifeq (${V},0) + Q := @ +else + Q := +endif + +HOSTCC := gcc + +.PHONY: all clean distclean + +all: ${PROJECT} + +${PROJECT}: ${OBJECTS} Makefile + @echo " HOSTLD $@" + ${Q}${HOSTCC} ${OBJECTS} -o $@ + @${ECHO_BLANK_LINE} + @echo "Built $@ successfully" + @${ECHO_BLANK_LINE} + +%.o: %.c Makefile + @echo " HOSTCC $<" + ${Q}${HOSTCC} -c ${HOSTCCFLAGS} $< -o $@ + +clean: + $(call SHELL_DELETE_ALL, ${PROJECT} ${OBJECTS}) + +distclean: clean diff --git a/tools/stm32image/stm32image.c b/tools/stm32image/stm32image.c new file mode 100644 index 0000000..bd4720c --- /dev/null +++ b/tools/stm32image/stm32image.c @@ -0,0 +1,361 @@ +/* + * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <asm/byteorder.h> +#include <errno.h> +#include <fcntl.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +/* Magic = 'S' 'T' 'M' 0x32 */ +#define HEADER_MAGIC __be32_to_cpu(0x53544D32) +#define VER_MAJOR 2 +#define VER_MINOR 1 +#define VER_VARIANT 0 +#define HEADER_VERSION_V1 0x1 +#define HEADER_VERSION_V2 0x2 +#define PADDING_HEADER_MAGIC __be32_to_cpu(0x5354FFFF) +#define PADDING_HEADER_FLAG (1 << 31) +#define PADDING_HEADER_LENGTH 0x180 + +struct stm32_header_v1 { + uint32_t magic_number; + uint8_t image_signature[64]; + 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; + uint8_t ecdsa_public_key[64]; + uint8_t padding[83]; + uint8_t binary_type; +}; + +struct stm32_header_v2 { + uint32_t magic_number; + uint8_t image_signature[64]; + 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 extension_flags; + uint32_t extension_headers_length; + uint32_t binary_type; + uint8_t padding[16]; + uint32_t extension_header_type; + uint32_t extension_header_length; + uint8_t extension_padding[376]; +}; + +static void stm32image_default_header(void *ptr) +{ + struct stm32_header_v1 *header = (struct stm32_header_v1 *)ptr; + + if (!header) { + return; + } + + header->magic_number = HEADER_MAGIC; + header->version_number = __cpu_to_le32(0); +} + +static uint32_t stm32image_checksum(void *start, uint32_t len, + uint32_t header_size) +{ + uint32_t csum = 0; + uint8_t *p; + + if (len < header_size) { + return 0; + } + + p = (unsigned char *)start + header_size; + len -= header_size; + + while (len > 0) { + csum += *p; + p++; + len--; + } + + return csum; +} + +static void stm32image_print_header(const void *ptr) +{ + struct stm32_header_v1 *stm32hdr = (struct stm32_header_v1 *)ptr; + struct stm32_header_v2 *stm32hdr_v2 = (struct stm32_header_v2 *)ptr; + + printf("Image Type : ST Microelectronics STM32 V%d.%d\n", + stm32hdr->header_version[VER_MAJOR], + stm32hdr->header_version[VER_MINOR]); + 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)); + + switch (stm32hdr->header_version[VER_MAJOR]) { + case HEADER_VERSION_V1: + printf("Option : 0x%08x\n", + __le32_to_cpu(stm32hdr->option_flags)); + break; + + case HEADER_VERSION_V2: + printf("Extension : 0x%08x\n", + __le32_to_cpu(stm32hdr_v2->extension_flags)); + break; + + default: + printf("Incorrect header version\n"); + } + + printf("Version : 0x%08x\n", + __le32_to_cpu(stm32hdr->version_number)); +} + +static int stm32image_set_header(void *ptr, struct stat *sbuf, int ifd, + uint32_t loadaddr, uint32_t ep, uint32_t ver, + uint32_t major, uint32_t minor, + uint32_t binary_type, uint32_t header_size) +{ + struct stm32_header_v1 *stm32hdr = (struct stm32_header_v1 *)ptr; + struct stm32_header_v2 *stm32hdr_v2 = (struct stm32_header_v2 *)ptr; + uint32_t ext_size = 0U; + uint32_t ext_flags = 0U; + + stm32image_default_header(ptr); + + stm32hdr->header_version[VER_MAJOR] = major; + stm32hdr->header_version[VER_MINOR] = minor; + stm32hdr->load_address = __cpu_to_le32(loadaddr); + stm32hdr->image_entry_point = __cpu_to_le32(ep); + stm32hdr->image_length = __cpu_to_le32((uint32_t)sbuf->st_size - + header_size); + stm32hdr->image_checksum = + __cpu_to_le32(stm32image_checksum(ptr, sbuf->st_size, + header_size)); + + switch (stm32hdr->header_version[VER_MAJOR]) { + case HEADER_VERSION_V1: + /* Default option for header v1 : bit0 => no signature */ + stm32hdr->option_flags = __cpu_to_le32(0x00000001); + stm32hdr->ecdsa_algorithm = __cpu_to_le32(1); + stm32hdr->binary_type = (uint8_t)binary_type; + break; + + case HEADER_VERSION_V2: + stm32hdr_v2->binary_type = binary_type; + ext_size += PADDING_HEADER_LENGTH; + ext_flags |= PADDING_HEADER_FLAG; + stm32hdr_v2->extension_flags = + __cpu_to_le32(ext_flags); + stm32hdr_v2->extension_headers_length = + __cpu_to_le32(ext_size); + stm32hdr_v2->extension_header_type = PADDING_HEADER_MAGIC; + stm32hdr_v2->extension_header_length = + __cpu_to_le32(PADDING_HEADER_LENGTH); + break; + + default: + return -1; + } + + stm32hdr->version_number = __cpu_to_le32(ver); + + return 0; +} + +static int stm32image_create_header_file(char *srcname, char *destname, + uint32_t loadaddr, uint32_t entry, + uint32_t version, uint32_t major, + uint32_t minor, uint32_t binary_type) +{ + int src_fd, dest_fd, header_size; + struct stat sbuf; + unsigned char *ptr; + void *stm32image_header; + + dest_fd = open(destname, O_RDWR | O_CREAT | O_TRUNC | O_APPEND, 0666); + if (dest_fd == -1) { + fprintf(stderr, "Can't open %s: %s\n", destname, + strerror(errno)); + return -1; + } + + src_fd = open(srcname, O_RDONLY); + if (src_fd == -1) { + fprintf(stderr, "Can't open %s: %s\n", srcname, + strerror(errno)); + return -1; + } + + if (fstat(src_fd, &sbuf) < 0) { + return -1; + } + + ptr = mmap(NULL, sbuf.st_size, PROT_READ, MAP_SHARED, src_fd, 0); + if (ptr == MAP_FAILED) { + fprintf(stderr, "Can't read %s\n", srcname); + return -1; + } + + switch (major) { + case HEADER_VERSION_V1: + stm32image_header = malloc(sizeof(struct stm32_header_v1)); + header_size = sizeof(struct stm32_header_v1); + break; + + case HEADER_VERSION_V2: + stm32image_header = malloc(sizeof(struct stm32_header_v2)); + header_size = sizeof(struct stm32_header_v2); + break; + + default: + return -1; + } + + memset(stm32image_header, 0, header_size); + if (write(dest_fd, stm32image_header, header_size) != + header_size) { + fprintf(stderr, "Write error %s: %s\n", destname, + strerror(errno)); + free(stm32image_header); + return -1; + } + + free(stm32image_header); + + if (write(dest_fd, ptr, sbuf.st_size) != sbuf.st_size) { + fprintf(stderr, "Write error on %s: %s\n", destname, + strerror(errno)); + return -1; + } + + munmap((void *)ptr, sbuf.st_size); + close(src_fd); + + if (fstat(dest_fd, &sbuf) < 0) { + return -1; + } + + ptr = mmap(0, sbuf.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, + dest_fd, 0); + + if (ptr == MAP_FAILED) { + fprintf(stderr, "Can't write %s\n", destname); + return -1; + } + + if (stm32image_set_header(ptr, &sbuf, dest_fd, loadaddr, + entry, version, major, minor, + binary_type, header_size) != 0) { + return -1; + } + + stm32image_print_header(ptr); + + munmap((void *)ptr, sbuf.st_size); + close(dest_fd); + return 0; +} + +int main(int argc, char *argv[]) +{ + int opt; + int loadaddr = -1; + int entry = -1; + int err = 0; + int version = 0; + int binary_type = -1; + int major = HEADER_VERSION_V2; + int minor = 0; + char *dest = NULL; + char *src = NULL; + + while ((opt = getopt(argc, argv, ":b:s:d:l:e:v:m:n:")) != -1) { + switch (opt) { + case 'b': + binary_type = strtol(optarg, NULL, 0); + break; + case 's': + src = optarg; + break; + case 'd': + dest = optarg; + break; + case 'l': + loadaddr = strtol(optarg, NULL, 0); + break; + case 'e': + entry = strtol(optarg, NULL, 0); + break; + case 'v': + version = strtol(optarg, NULL, 0); + break; + case 'm': + major = strtol(optarg, NULL, 0); + break; + case 'n': + minor = strtol(optarg, NULL, 0); + break; + default: + fprintf(stderr, + "Usage : %s [-s srcfile] [-d destfile] [-l loadaddr] [-e entry_point] [-m major] [-n minor] [-b binary_type]\n", + argv[0]); + return -1; + } + } + + if (!src) { + fprintf(stderr, "Missing -s option\n"); + return -1; + } + + if (!dest) { + fprintf(stderr, "Missing -d option\n"); + return -1; + } + + if (loadaddr == -1) { + fprintf(stderr, "Missing -l option\n"); + return -1; + } + + if (entry == -1) { + fprintf(stderr, "Missing -e option\n"); + return -1; + } + + if (binary_type == -1) { + fprintf(stderr, "Missing -b option\n"); + return -1; + } + + err = stm32image_create_header_file(src, dest, loadaddr, + entry, version, major, minor, + binary_type); + + return err; +} |