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- // 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-f, --fit <fit image> new FIT image file\n"
- "\t-r, --raw <raw image> new raw image file\n"
- "\t-i, --index <index> update image index\n"
- "\t-I, --instance <instance> update hardware instance\n"
- "\t-h, --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: %zx\n", (size_t)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);
- /* TODO: The current implementation ignores flags */
- header.flags = CAPSULE_FLAGS_PERSIST_ACROSS_RESET;
- 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 (%zx)\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 (%zx)\n", size);
- goto err_3;
- }
- offset = sizeof(capsule) + sizeof(u64);
- size = fwrite(&offset, 1, sizeof(offset), f);
- if (size < sizeof(offset)) {
- printf("write failed (%zx)\n", size);
- goto err_3;
- }
- image.version = 0x00000003;
- memcpy(&image.update_image_type_id, guid, sizeof(*guid));
- image.update_image_index = index;
- image.reserved[0] = 0;
- image.reserved[1] = 0;
- image.reserved[2] = 0;
- 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 (%zx)\n", size);
- goto err_3;
- }
- size = fread(data, 1, bin_stat.st_size, g);
- if (size < bin_stat.st_size) {
- printf("read failed (%zx)\n", size);
- goto err_3;
- }
- size = fwrite(data, 1, bin_stat.st_size, f);
- if (size < bin_stat.st_size) {
- printf("write failed (%zx)\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 an output file */
- if (argc != optind + 1) {
- print_usage();
- exit(EXIT_FAILURE);
- }
- /* need a fit image file or raw image file */
- if (!file) {
- print_usage();
- exit(EXIT_SUCCESS);
- }
- if (create_fwbin(argv[optind], file, guid, index, instance)
- < 0) {
- printf("Creating firmware capsule failed\n");
- exit(EXIT_FAILURE);
- }
- exit(EXIT_SUCCESS);
- }
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