diff options
Diffstat (limited to 'tools/mkeficapsule.c')
| -rw-r--r-- | tools/mkeficapsule.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/tools/mkeficapsule.c b/tools/mkeficapsule.c new file mode 100644 index 0000000000..426038ea27 --- /dev/null +++ b/tools/mkeficapsule.c @@ -0,0 +1,236 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2018 Linaro Limited + * Author: AKASHI Takahiro + */ + +#include <getopt.h> +#include <malloc.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <linux/types.h> +#include <sys/stat.h> +#include <sys/types.h> + +typedef __u8 u8; +typedef __u16 u16; +typedef __u32 u32; +typedef __u64 u64; +typedef __s16 s16; +typedef __s32 s32; + +#define aligned_u64 __aligned_u64 + +#ifndef __packed +#define __packed __attribute__((packed)) +#endif + +#include <efi.h> +#include <efi_api.h> + +static const char *tool_name = "mkeficapsule"; + +efi_guid_t efi_guid_fm_capsule = EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID; +efi_guid_t efi_guid_image_type_uboot_fit = + EFI_FIRMWARE_IMAGE_TYPE_UBOOT_FIT_GUID; +efi_guid_t efi_guid_image_type_uboot_raw = + EFI_FIRMWARE_IMAGE_TYPE_UBOOT_RAW_GUID; + +static struct option options[] = { + {"fit", required_argument, NULL, 'f'}, + {"raw", required_argument, NULL, 'r'}, + {"index", required_argument, NULL, 'i'}, + {"instance", required_argument, NULL, 'I'}, + {"help", no_argument, NULL, 'h'}, + {NULL, 0, NULL, 0}, +}; + +static void print_usage(void) +{ + printf("Usage: %s [options] <output file>\n" + "Options:\n" + "\t--fit <fit image> new FIT image file\n" + "\t--raw <raw image> new raw image file\n" + "\t--index <index> update image index\n" + "\t--instance <instance> update hardware instance\n" + "\t--help print a help message\n", + tool_name); +} + +static int create_fwbin(char *path, char *bin, efi_guid_t *guid, + unsigned long index, unsigned long instance) +{ + struct efi_capsule_header header; + struct efi_firmware_management_capsule_header capsule; + struct efi_firmware_management_capsule_image_header image; + FILE *f, *g; + struct stat bin_stat; + u8 *data; + size_t size; + u64 offset; + +#ifdef DEBUG + printf("For output: %s\n", path); + printf("\tbin: %s\n\ttype: %pUl\n" bin, guid); + printf("\tindex: %ld\n\tinstance: %ld\n", index, instance); +#endif + + g = fopen(bin, "r"); + if (!g) { + printf("cannot open %s\n", bin); + return -1; + } + if (stat(bin, &bin_stat) < 0) { + printf("cannot determine the size of %s\n", bin); + goto err_1; + } + data = malloc(bin_stat.st_size); + if (!data) { + printf("cannot allocate memory: %lx\n", bin_stat.st_size); + goto err_1; + } + f = fopen(path, "w"); + if (!f) { + printf("cannot open %s\n", path); + goto err_2; + } + header.capsule_guid = efi_guid_fm_capsule; + header.header_size = sizeof(header); + header.flags = CAPSULE_FLAGS_PERSIST_ACROSS_RESET; /* TODO */ + header.capsule_image_size = sizeof(header) + + sizeof(capsule) + sizeof(u64) + + sizeof(image) + + bin_stat.st_size; + + size = fwrite(&header, 1, sizeof(header), f); + if (size < sizeof(header)) { + printf("write failed (%lx)\n", size); + goto err_3; + } + + capsule.version = 0x00000001; + capsule.embedded_driver_count = 0; + capsule.payload_item_count = 1; + size = fwrite(&capsule, 1, sizeof(capsule), f); + if (size < (sizeof(capsule))) { + printf("write failed (%lx)\n", size); + goto err_3; + } + offset = sizeof(capsule) + sizeof(u64); + size = fwrite(&offset, 1, sizeof(offset), f); + if (size < sizeof(offset)) { + printf("write failed (%lx)\n", size); + goto err_3; + } + + image.version = 0x00000003; + memcpy(&image.update_image_type_id, guid, sizeof(*guid)); + image.update_image_index = index; + image.update_image_size = bin_stat.st_size; + image.update_vendor_code_size = 0; /* none */ + image.update_hardware_instance = instance; + image.image_capsule_support = 0; + + size = fwrite(&image, 1, sizeof(image), f); + if (size < sizeof(image)) { + printf("write failed (%lx)\n", size); + goto err_3; + } + size = fread(data, 1, bin_stat.st_size, g); + if (size < bin_stat.st_size) { + printf("read failed (%lx)\n", size); + goto err_3; + } + size = fwrite(data, 1, bin_stat.st_size, f); + if (size < bin_stat.st_size) { + printf("write failed (%lx)\n", size); + goto err_3; + } + + fclose(f); + fclose(g); + free(data); + + return 0; + +err_3: + fclose(f); +err_2: + free(data); +err_1: + fclose(g); + + return -1; +} + +/* + * Usage: + * $ mkeficapsule -f <firmware binary> <output file> + */ +int main(int argc, char **argv) +{ + char *file; + efi_guid_t *guid; + unsigned long index, instance; + int c, idx; + + file = NULL; + guid = NULL; + index = 0; + instance = 0; + for (;;) { + c = getopt_long(argc, argv, "f:r:i:I:v:h", options, &idx); + if (c == -1) + break; + + switch (c) { + case 'f': + if (file) { + printf("Image already specified\n"); + return -1; + } + file = optarg; + guid = &efi_guid_image_type_uboot_fit; + break; + case 'r': + if (file) { + printf("Image already specified\n"); + return -1; + } + file = optarg; + guid = &efi_guid_image_type_uboot_raw; + break; + case 'i': + index = strtoul(optarg, NULL, 0); + break; + case 'I': + instance = strtoul(optarg, NULL, 0); + break; + case 'h': + print_usage(); + return 0; + } + } + + /* need a output file */ + if (argc != optind + 1) { + print_usage(); + return -1; + } + + /* need a fit image file or raw image file */ + if (!file) { + print_usage(); + return -1; + } + + if (create_fwbin(argv[optind], file, guid, index, instance) + < 0) { + printf("Creating firmware capsule failed\n"); + return -1; + } + + return 0; +} |