STM32MP157 bootrom needs a specific header for first boot stage. This patch adds support of this header in mkimage.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
common/image.c | 1 + include/image.h | 1 + tools/Makefile | 1 + tools/stm32image.c | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 151 insertions(+) create mode 100644 tools/stm32image.c
diff --git a/common/image.c b/common/image.c index e9609cd..a58b9c1 100644 --- a/common/image.c +++ b/common/image.c @@ -161,6 +161,7 @@ static const table_entry_t uimage_type[] = { { IH_TYPE_TEE, "tee", "Trusted Execution Environment Image",}, { IH_TYPE_FIRMWARE_IVT, "firmware_ivt", "Firmware with HABv4 IVT" }, { IH_TYPE_PMMC, "pmmc", "TI Power Management Micro-Controller Firmware",}, + { IH_TYPE_STM32IMAGE, "stm32image", "STMicroelectronics STM32 Image" }, { -1, "", "", }, };
diff --git a/include/image.h b/include/image.h index 325b014..34aac9f 100644 --- a/include/image.h +++ b/include/image.h @@ -272,6 +272,7 @@ enum { IH_TYPE_TEE, /* Trusted Execution Environment OS Image */ IH_TYPE_FIRMWARE_IVT, /* Firmware Image with HABv4 IVT */ IH_TYPE_PMMC, /* TI Power Management Micro-Controller Firmware */ + IH_TYPE_STM32IMAGE, /* STMicroelectronics STM32 Image */
IH_TYPE_COUNT, /* Number of image types */ }; diff --git a/tools/Makefile b/tools/Makefile index d3387fa..8a0c0bf 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -103,6 +103,7 @@ dumpimage-mkimage-objs := aisimage.o \ pblimage.o \ pbl_crc32.o \ vybridimage.o \ + stm32image.o \ $(ROCKCHIP_OBS) \ socfpgaimage.o \ lib/sha1.o \ diff --git a/tools/stm32image.c b/tools/stm32image.c new file mode 100644 index 0000000..437e384 --- /dev/null +++ b/tools/stm32image.c @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2018, STMicroelectronics - All Rights Reserved + * + * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause + */ + +#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 +);