1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright 2018 Linaro Limited
4 * Author: AKASHI Takahiro
5 */
6
7 #include <getopt.h>
8 #include <pe.h>
9 #include <stdbool.h>
10 #include <stdint.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <linux/types.h>
15
16 #include <sys/stat.h>
17 #include <sys/types.h>
18 #include <uuid/uuid.h>
19 #include <linux/kconfig.h>
20
21 #include <gnutls/gnutls.h>
22 #include <gnutls/pkcs7.h>
23 #include <gnutls/abstract.h>
24
25 #include "eficapsule.h"
26
27 static const char *tool_name = "mkeficapsule";
28
29 efi_guid_t efi_guid_fm_capsule = EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID;
30 efi_guid_t efi_guid_cert_type_pkcs7 = EFI_CERT_TYPE_PKCS7_GUID;
31
32 static const char *opts_short = "g:i:I:v:p:c:m:o:dhAR";
33
34 enum {
35 CAPSULE_NORMAL_BLOB = 0,
36 CAPSULE_ACCEPT,
37 CAPSULE_REVERT,
38 } capsule_type;
39
40 static struct option options[] = {
41 {"guid", required_argument, NULL, 'g'},
42 {"index", required_argument, NULL, 'i'},
43 {"instance", required_argument, NULL, 'I'},
44 {"private-key", required_argument, NULL, 'p'},
45 {"certificate", required_argument, NULL, 'c'},
46 {"monotonic-count", required_argument, NULL, 'm'},
47 {"dump-sig", no_argument, NULL, 'd'},
48 {"fw-accept", no_argument, NULL, 'A'},
49 {"fw-revert", no_argument, NULL, 'R'},
50 {"capoemflag", required_argument, NULL, 'o'},
51 {"help", no_argument, NULL, 'h'},
52 {NULL, 0, NULL, 0},
53 };
54
print_usage(void)55 static void print_usage(void)
56 {
57 fprintf(stderr, "Usage: %s [options] <image blob> <output file>\n"
58 "Options:\n"
59
60 "\t-g, --guid <guid string> guid for image blob type\n"
61 "\t-i, --index <index> update image index\n"
62 "\t-I, --instance <instance> update hardware instance\n"
63 "\t-p, --private-key <privkey file> private key file\n"
64 "\t-c, --certificate <cert file> signer's certificate file\n"
65 "\t-m, --monotonic-count <count> monotonic count\n"
66 "\t-d, --dump_sig dump signature (*.p7)\n"
67 "\t-A, --fw-accept firmware accept capsule, requires GUID, no image blob\n"
68 "\t-R, --fw-revert firmware revert capsule, takes no GUID, no image blob\n"
69 "\t-o, --capoemflag Capsule OEM Flag, an integer between 0x0000 and 0xffff\n"
70 "\t-h, --help print a help message\n",
71 tool_name);
72 }
73
74 /**
75 * auth_context - authentication context
76 * @key_file: Path to a private key file
77 * @cert_file: Path to a certificate file
78 * @image_data: Pointer to firmware data
79 * @image_size: Size of firmware data
80 * @auth: Authentication header
81 * @sig_data: Signature data
82 * @sig_size: Size of signature data
83 *
84 * Data structure used in create_auth_data(). @key_file through
85 * @image_size are input parameters. @auth, @sig_data and @sig_size
86 * are filled in by create_auth_data().
87 */
88 struct auth_context {
89 char *key_file;
90 char *cert_file;
91 uint8_t *image_data;
92 size_t image_size;
93 struct efi_firmware_image_authentication auth;
94 uint8_t *sig_data;
95 size_t sig_size;
96 };
97
98 static int dump_sig;
99
100 /**
101 * read_bin_file - read a firmware binary file
102 * @bin: Path to a firmware binary file
103 * @data: Pointer to pointer of allocated buffer
104 * @bin_size: Size of allocated buffer
105 *
106 * Read out a content of binary, @bin, into @data.
107 * A caller should free @data.
108 *
109 * Return:
110 * * 0 - on success
111 * * -1 - on failure
112 */
read_bin_file(char * bin,uint8_t ** data,off_t * bin_size)113 static int read_bin_file(char *bin, uint8_t **data, off_t *bin_size)
114 {
115 FILE *g;
116 struct stat bin_stat;
117 void *buf;
118 size_t size;
119 int ret = 0;
120
121 g = fopen(bin, "r");
122 if (!g) {
123 fprintf(stderr, "cannot open %s\n", bin);
124 return -1;
125 }
126 if (stat(bin, &bin_stat) < 0) {
127 fprintf(stderr, "cannot determine the size of %s\n", bin);
128 ret = -1;
129 goto err;
130 }
131 if (bin_stat.st_size > SIZE_MAX) {
132 fprintf(stderr, "file size is too large for malloc: %s\n", bin);
133 ret = -1;
134 goto err;
135 }
136 buf = malloc(bin_stat.st_size);
137 if (!buf) {
138 fprintf(stderr, "cannot allocate memory: %zx\n",
139 (size_t)bin_stat.st_size);
140 ret = -1;
141 goto err;
142 }
143
144 size = fread(buf, 1, bin_stat.st_size, g);
145 if (size < bin_stat.st_size) {
146 fprintf(stderr, "read failed (%zx)\n", size);
147 ret = -1;
148 goto err;
149 }
150
151 *data = buf;
152 *bin_size = bin_stat.st_size;
153 err:
154 fclose(g);
155
156 return ret;
157 }
158
159 /**
160 * write_capsule_file - write a capsule file
161 * @bin: FILE stream
162 * @data: Pointer to data
163 * @bin_size: Size of data
164 *
165 * Write out data, @data, with the size @bin_size.
166 *
167 * Return:
168 * * 0 - on success
169 * * -1 - on failure
170 */
write_capsule_file(FILE * f,void * data,size_t size,const char * msg)171 static int write_capsule_file(FILE *f, void *data, size_t size, const char *msg)
172 {
173 size_t size_written;
174
175 size_written = fwrite(data, 1, size, f);
176 if (size_written < size) {
177 fprintf(stderr, "%s: write failed (%zx != %zx)\n", msg,
178 size_written, size);
179 return -1;
180 }
181
182 return 0;
183 }
184
185 /**
186 * create_auth_data - compose authentication data in capsule
187 * @auth_context: Pointer to authentication context
188 *
189 * Fill up an authentication header (.auth) and signature data (.sig_data)
190 * in @auth_context, using library functions from openssl.
191 * All the parameters in @auth_context must be filled in by a caller.
192 *
193 * Return:
194 * * 0 - on success
195 * * -1 - on failure
196 */
create_auth_data(struct auth_context * ctx)197 static int create_auth_data(struct auth_context *ctx)
198 {
199 gnutls_datum_t cert;
200 gnutls_datum_t key;
201 off_t file_size;
202 gnutls_privkey_t pkey;
203 gnutls_x509_crt_t x509;
204 gnutls_pkcs7_t pkcs7;
205 gnutls_datum_t data;
206 gnutls_datum_t signature;
207 int ret;
208
209 ret = read_bin_file(ctx->cert_file, &cert.data, &file_size);
210 if (ret < 0)
211 return -1;
212 if (file_size > UINT_MAX)
213 return -1;
214 cert.size = file_size;
215
216 ret = read_bin_file(ctx->key_file, &key.data, &file_size);
217 if (ret < 0)
218 return -1;
219 if (file_size > UINT_MAX)
220 return -1;
221 key.size = file_size;
222
223 /*
224 * For debugging,
225 * gnutls_global_set_time_function(mytime);
226 * gnutls_global_set_log_function(tls_log_func);
227 * gnutls_global_set_log_level(6);
228 */
229
230 ret = gnutls_privkey_init(&pkey);
231 if (ret < 0) {
232 fprintf(stderr, "error in gnutls_privkey_init(): %s\n",
233 gnutls_strerror(ret));
234 return -1;
235 }
236
237 ret = gnutls_x509_crt_init(&x509);
238 if (ret < 0) {
239 fprintf(stderr, "error in gnutls_x509_crt_init(): %s\n",
240 gnutls_strerror(ret));
241 return -1;
242 }
243
244 /* load a private key */
245 ret = gnutls_privkey_import_x509_raw(pkey, &key, GNUTLS_X509_FMT_PEM,
246 0, 0);
247 if (ret < 0) {
248 fprintf(stderr,
249 "error in gnutls_privkey_import_x509_raw(): %s\n",
250 gnutls_strerror(ret));
251 return -1;
252 }
253
254 /* load x509 certificate */
255 ret = gnutls_x509_crt_import(x509, &cert, GNUTLS_X509_FMT_PEM);
256 if (ret < 0) {
257 fprintf(stderr, "error in gnutls_x509_crt_import(): %s\n",
258 gnutls_strerror(ret));
259 return -1;
260 }
261
262 /* generate a PKCS #7 structure */
263 ret = gnutls_pkcs7_init(&pkcs7);
264 if (ret < 0) {
265 fprintf(stderr, "error in gnutls_pkcs7_init(): %s\n",
266 gnutls_strerror(ret));
267 return -1;
268 }
269
270 /* sign */
271 /*
272 * Data should have
273 * * firmware image
274 * * monotonic count
275 * in this order!
276 * See EDK2's FmpAuthenticatedHandlerRsa2048Sha256()
277 */
278 data.size = ctx->image_size + sizeof(ctx->auth.monotonic_count);
279 data.data = malloc(data.size);
280 if (!data.data) {
281 fprintf(stderr, "allocating memory (0x%x) failed\n", data.size);
282 return -1;
283 }
284 memcpy(data.data, ctx->image_data, ctx->image_size);
285 memcpy(data.data + ctx->image_size, &ctx->auth.monotonic_count,
286 sizeof(ctx->auth.monotonic_count));
287
288 ret = gnutls_pkcs7_sign(pkcs7, x509, pkey, &data, NULL, NULL,
289 GNUTLS_DIG_SHA256,
290 /* GNUTLS_PKCS7_EMBED_DATA? */
291 GNUTLS_PKCS7_INCLUDE_CERT |
292 GNUTLS_PKCS7_INCLUDE_TIME);
293 if (ret < 0) {
294 fprintf(stderr, "error in gnutls_pkcs7)sign(): %s\n",
295 gnutls_strerror(ret));
296 return -1;
297 }
298
299 /* export */
300 ret = gnutls_pkcs7_export2(pkcs7, GNUTLS_X509_FMT_DER, &signature);
301 if (ret < 0) {
302 fprintf(stderr, "error in gnutls_pkcs7_export2: %s\n",
303 gnutls_strerror(ret));
304 return -1;
305 }
306 ctx->sig_data = signature.data;
307 ctx->sig_size = signature.size;
308
309 /* fill auth_info */
310 ctx->auth.auth_info.hdr.dwLength = sizeof(ctx->auth.auth_info)
311 + ctx->sig_size;
312 ctx->auth.auth_info.hdr.wRevision = WIN_CERT_REVISION_2_0;
313 ctx->auth.auth_info.hdr.wCertificateType = WIN_CERT_TYPE_EFI_GUID;
314 memcpy(&ctx->auth.auth_info.cert_type, &efi_guid_cert_type_pkcs7,
315 sizeof(efi_guid_cert_type_pkcs7));
316
317 /*
318 * For better clean-ups,
319 * gnutls_pkcs7_deinit(pkcs7);
320 * gnutls_privkey_deinit(pkey);
321 * gnutls_x509_crt_deinit(x509);
322 * free(cert.data);
323 * free(key.data);
324 * if error
325 * gnutls_free(signature.data);
326 */
327
328 return 0;
329 }
330
331 /**
332 * dump_signature - dump out a signature
333 * @path: Path to a capsule file
334 * @signature: Signature data
335 * @sig_size: Size of signature data
336 *
337 * Signature data pointed to by @signature will be saved into
338 * a file whose file name is @path with ".p7" suffix.
339 *
340 * Return:
341 * * 0 - on success
342 * * -1 - on failure
343 */
dump_signature(const char * path,uint8_t * signature,size_t sig_size)344 static int dump_signature(const char *path, uint8_t *signature, size_t sig_size)
345 {
346 char *sig_path;
347 FILE *f;
348 size_t size;
349 int ret = -1;
350
351 sig_path = malloc(strlen(path) + 3 + 1);
352 if (!sig_path)
353 return ret;
354
355 sprintf(sig_path, "%s.p7", path);
356 f = fopen(sig_path, "w");
357 if (!f)
358 goto err;
359
360 size = fwrite(signature, 1, sig_size, f);
361 if (size == sig_size)
362 ret = 0;
363
364 fclose(f);
365 err:
366 free(sig_path);
367 return ret;
368 }
369
370 /**
371 * free_sig_data - free out signature data
372 * @ctx: Pointer to authentication context
373 *
374 * Free signature data allocated in create_auth_data().
375 */
free_sig_data(struct auth_context * ctx)376 static void free_sig_data(struct auth_context *ctx)
377 {
378 if (ctx->sig_size)
379 gnutls_free(ctx->sig_data);
380 }
381
382 /**
383 * create_fwbin - create an uefi capsule file
384 * @path: Path to a created capsule file
385 * @bin: Path to a firmware binary to encapsulate
386 * @guid: GUID of related FMP driver
387 * @index: Index number in capsule
388 * @instance: Instance number in capsule
389 * @mcount: Monotonic count in authentication information
390 * @private_file: Path to a private key file
391 * @cert_file: Path to a certificate file
392 * @oemflags: Capsule OEM Flags, bits 0-15
393 *
394 * This function actually does the job of creating an uefi capsule file.
395 * All the arguments must be supplied.
396 * If either @private_file ror @cert_file is NULL, the capsule file
397 * won't be signed.
398 *
399 * Return:
400 * * 0 - on success
401 * * -1 - on failure
402 */
create_fwbin(char * path,char * bin,efi_guid_t * guid,unsigned long index,unsigned long instance,uint64_t mcount,char * privkey_file,char * cert_file,uint16_t oemflags)403 static int create_fwbin(char *path, char *bin, efi_guid_t *guid,
404 unsigned long index, unsigned long instance,
405 uint64_t mcount, char *privkey_file, char *cert_file,
406 uint16_t oemflags)
407 {
408 struct efi_capsule_header header;
409 struct efi_firmware_management_capsule_header capsule;
410 struct efi_firmware_management_capsule_image_header image;
411 struct auth_context auth_context;
412 FILE *f;
413 uint8_t *data;
414 off_t bin_size;
415 uint64_t offset;
416 int ret;
417
418 #ifdef DEBUG
419 fprintf(stderr, "For output: %s\n", path);
420 fprintf(stderr, "\tbin: %s\n\ttype: %pUl\n", bin, guid);
421 fprintf(stderr, "\tindex: %lu\n\tinstance: %lu\n", index, instance);
422 #endif
423 auth_context.sig_size = 0;
424 f = NULL;
425 data = NULL;
426 ret = -1;
427
428 /*
429 * read a firmware binary
430 */
431 if (read_bin_file(bin, &data, &bin_size))
432 goto err;
433
434 /* first, calculate signature to determine its size */
435 if (privkey_file && cert_file) {
436 auth_context.key_file = privkey_file;
437 auth_context.cert_file = cert_file;
438 auth_context.auth.monotonic_count = mcount;
439 auth_context.image_data = data;
440 auth_context.image_size = bin_size;
441
442 if (create_auth_data(&auth_context)) {
443 fprintf(stderr, "Signing firmware image failed\n");
444 goto err;
445 }
446
447 if (dump_sig &&
448 dump_signature(path, auth_context.sig_data,
449 auth_context.sig_size)) {
450 fprintf(stderr, "Creating signature file failed\n");
451 goto err;
452 }
453 }
454
455 /*
456 * write a capsule file
457 */
458 f = fopen(path, "w");
459 if (!f) {
460 fprintf(stderr, "cannot open %s\n", path);
461 goto err;
462 }
463
464 /*
465 * capsule file header
466 */
467 header.capsule_guid = efi_guid_fm_capsule;
468 header.header_size = sizeof(header);
469 /* TODO: The current implementation ignores flags */
470 header.flags = CAPSULE_FLAGS_PERSIST_ACROSS_RESET;
471 if (oemflags)
472 header.flags |= oemflags;
473 header.capsule_image_size = sizeof(header)
474 + sizeof(capsule) + sizeof(uint64_t)
475 + sizeof(image)
476 + bin_size;
477 if (auth_context.sig_size)
478 header.capsule_image_size += sizeof(auth_context.auth)
479 + auth_context.sig_size;
480 if (write_capsule_file(f, &header, sizeof(header),
481 "Capsule header"))
482 goto err;
483
484 /*
485 * firmware capsule header
486 * This capsule has only one firmware capsule image.
487 */
488 capsule.version = 0x00000001;
489 capsule.embedded_driver_count = 0;
490 capsule.payload_item_count = 1;
491 if (write_capsule_file(f, &capsule, sizeof(capsule),
492 "Firmware capsule header"))
493 goto err;
494
495 offset = sizeof(capsule) + sizeof(uint64_t);
496 if (write_capsule_file(f, &offset, sizeof(offset),
497 "Offset to capsule image"))
498 goto err;
499
500 /*
501 * firmware capsule image header
502 */
503 image.version = 0x00000003;
504 memcpy(&image.update_image_type_id, guid, sizeof(*guid));
505 image.update_image_index = index;
506 image.reserved[0] = 0;
507 image.reserved[1] = 0;
508 image.reserved[2] = 0;
509 image.update_image_size = bin_size;
510 if (auth_context.sig_size)
511 image.update_image_size += sizeof(auth_context.auth)
512 + auth_context.sig_size;
513 image.update_vendor_code_size = 0; /* none */
514 image.update_hardware_instance = instance;
515 image.image_capsule_support = 0;
516 if (auth_context.sig_size)
517 image.image_capsule_support |= CAPSULE_SUPPORT_AUTHENTICATION;
518 if (write_capsule_file(f, &image, sizeof(image),
519 "Firmware capsule image header"))
520 goto err;
521
522 /*
523 * signature
524 */
525 if (auth_context.sig_size) {
526 if (write_capsule_file(f, &auth_context.auth,
527 sizeof(auth_context.auth),
528 "Authentication header"))
529 goto err;
530
531 if (write_capsule_file(f, auth_context.sig_data,
532 auth_context.sig_size, "Signature"))
533 goto err;
534 }
535
536 /*
537 * firmware binary
538 */
539 if (write_capsule_file(f, data, bin_size, "Firmware binary"))
540 goto err;
541
542 ret = 0;
543 err:
544 if (f)
545 fclose(f);
546 free_sig_data(&auth_context);
547 free(data);
548
549 return ret;
550 }
551
552 /**
553 * convert_uuid_to_guid() - convert UUID to GUID
554 * @buf: UUID binary
555 *
556 * UUID and GUID have the same data structure, but their binary
557 * formats are different due to the endianness. See lib/uuid.c.
558 * Since uuid_parse() can handle only UUID, this function must
559 * be called to get correct data for GUID when parsing a string.
560 *
561 * The correct data will be returned in @buf.
562 */
convert_uuid_to_guid(unsigned char * buf)563 void convert_uuid_to_guid(unsigned char *buf)
564 {
565 unsigned char c;
566
567 c = buf[0];
568 buf[0] = buf[3];
569 buf[3] = c;
570 c = buf[1];
571 buf[1] = buf[2];
572 buf[2] = c;
573
574 c = buf[4];
575 buf[4] = buf[5];
576 buf[5] = c;
577
578 c = buf[6];
579 buf[6] = buf[7];
580 buf[7] = c;
581 }
582
create_empty_capsule(char * path,efi_guid_t * guid,bool fw_accept)583 static int create_empty_capsule(char *path, efi_guid_t *guid, bool fw_accept)
584 {
585 struct efi_capsule_header header = { 0 };
586 FILE *f = NULL;
587 int ret = -1;
588 efi_guid_t fw_accept_guid = FW_ACCEPT_OS_GUID;
589 efi_guid_t fw_revert_guid = FW_REVERT_OS_GUID;
590 efi_guid_t capsule_guid;
591
592 f = fopen(path, "w");
593 if (!f) {
594 fprintf(stderr, "cannot open %s\n", path);
595 goto err;
596 }
597
598 capsule_guid = fw_accept ? fw_accept_guid : fw_revert_guid;
599
600 memcpy(&header.capsule_guid, &capsule_guid, sizeof(efi_guid_t));
601 header.header_size = sizeof(header);
602 header.flags = 0;
603
604 header.capsule_image_size = fw_accept ?
605 sizeof(header) + sizeof(efi_guid_t) : sizeof(header);
606
607 if (write_capsule_file(f, &header, sizeof(header),
608 "Capsule header"))
609 goto err;
610
611 if (fw_accept) {
612 if (write_capsule_file(f, guid, sizeof(*guid),
613 "FW Accept Capsule Payload"))
614 goto err;
615 }
616
617 ret = 0;
618
619 err:
620 if (f)
621 fclose(f);
622
623 return ret;
624 }
625
626 /**
627 * main - main entry function of mkeficapsule
628 * @argc: Number of arguments
629 * @argv: Array of pointers to arguments
630 *
631 * Create an uefi capsule file, optionally signing it.
632 * Parse all the arguments and pass them on to create_fwbin().
633 *
634 * Return:
635 * * 0 - on success
636 * * -1 - on failure
637 */
main(int argc,char ** argv)638 int main(int argc, char **argv)
639 {
640 efi_guid_t *guid;
641 unsigned char uuid_buf[16];
642 unsigned long index, instance;
643 uint64_t mcount;
644 unsigned long oemflags;
645 char *privkey_file, *cert_file;
646 int c, idx;
647
648 guid = NULL;
649 index = 0;
650 instance = 0;
651 mcount = 0;
652 privkey_file = NULL;
653 cert_file = NULL;
654 dump_sig = 0;
655 capsule_type = CAPSULE_NORMAL_BLOB;
656 oemflags = 0;
657 for (;;) {
658 c = getopt_long(argc, argv, opts_short, options, &idx);
659 if (c == -1)
660 break;
661
662 switch (c) {
663 case 'g':
664 if (guid) {
665 fprintf(stderr,
666 "Image type already specified\n");
667 exit(EXIT_FAILURE);
668 }
669 if (uuid_parse(optarg, uuid_buf)) {
670 fprintf(stderr, "Wrong guid format\n");
671 exit(EXIT_FAILURE);
672 }
673 convert_uuid_to_guid(uuid_buf);
674 guid = (efi_guid_t *)uuid_buf;
675 break;
676 case 'i':
677 index = strtoul(optarg, NULL, 0);
678 break;
679 case 'I':
680 instance = strtoul(optarg, NULL, 0);
681 break;
682 case 'p':
683 if (privkey_file) {
684 fprintf(stderr,
685 "Private Key already specified\n");
686 exit(EXIT_FAILURE);
687 }
688 privkey_file = optarg;
689 break;
690 case 'c':
691 if (cert_file) {
692 fprintf(stderr,
693 "Certificate file already specified\n");
694 exit(EXIT_FAILURE);
695 }
696 cert_file = optarg;
697 break;
698 case 'm':
699 mcount = strtoul(optarg, NULL, 0);
700 break;
701 case 'd':
702 dump_sig = 1;
703 break;
704 case 'A':
705 if (capsule_type) {
706 fprintf(stderr,
707 "Select either of Accept or Revert capsule generation\n");
708 exit(1);
709 }
710 capsule_type = CAPSULE_ACCEPT;
711 break;
712 case 'R':
713 if (capsule_type) {
714 fprintf(stderr,
715 "Select either of Accept or Revert capsule generation\n");
716 exit(1);
717 }
718 capsule_type = CAPSULE_REVERT;
719 break;
720 case 'o':
721 oemflags = strtoul(optarg, NULL, 0);
722 if (oemflags > 0xffff) {
723 fprintf(stderr,
724 "oemflags must be between 0x0 and 0xffff\n");
725 exit(1);
726 }
727 break;
728 default:
729 print_usage();
730 exit(EXIT_SUCCESS);
731 }
732 }
733
734 /* check necessary parameters */
735 if ((capsule_type == CAPSULE_NORMAL_BLOB &&
736 ((argc != optind + 2) || !guid ||
737 ((privkey_file && !cert_file) ||
738 (!privkey_file && cert_file)))) ||
739 (capsule_type != CAPSULE_NORMAL_BLOB &&
740 ((argc != optind + 1) ||
741 ((capsule_type == CAPSULE_ACCEPT) && !guid) ||
742 ((capsule_type == CAPSULE_REVERT) && guid)))) {
743 print_usage();
744 exit(EXIT_FAILURE);
745 }
746
747 if (capsule_type != CAPSULE_NORMAL_BLOB) {
748 if (create_empty_capsule(argv[argc - 1], guid,
749 capsule_type == CAPSULE_ACCEPT) < 0) {
750 fprintf(stderr, "Creating empty capsule failed\n");
751 exit(EXIT_FAILURE);
752 }
753 } else if (create_fwbin(argv[argc - 1], argv[argc - 2], guid,
754 index, instance, mcount, privkey_file,
755 cert_file, (uint16_t)oemflags) < 0) {
756 fprintf(stderr, "Creating firmware capsule failed\n");
757 exit(EXIT_FAILURE);
758 }
759
760 exit(EXIT_SUCCESS);
761 }
762