xref: /openbmc/u-boot/tools/mkimage.c (revision 9702ec00) 
1 /*
2  * (C) Copyright 2008 Semihalf
3  *
4  * (C) Copyright 2000-2009
5  * DENX Software Engineering
6  * Wolfgang Denk, wd@denx.de
7  *
8  * SPDX-License-Identifier:	GPL-2.0+
9  */
10 
11 #include "mkimage.h"
12 #include <image.h>
13 #include <version.h>
14 
15 static void copy_file(int, const char *, int);
16 
17 /* parameters initialized by core will be used by the image type code */
18 static struct image_tool_params params = {
19 	.os = IH_OS_LINUX,
20 	.arch = IH_ARCH_PPC,
21 	.type = IH_TYPE_KERNEL,
22 	.comp = IH_COMP_GZIP,
23 	.dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
24 	.imagename = "",
25 	.imagename2 = "",
26 };
27 
28 static int h_compare_image_name(const void *vtype1, const void *vtype2)
29 {
30 	const int *type1 = vtype1;
31 	const int *type2 = vtype2;
32 	const char *name1 = genimg_get_type_short_name(*type1);
33 	const char *name2 = genimg_get_type_short_name(*type2);
34 
35 	return strcmp(name1, name2);
36 }
37 
38 /* Show all image types supported by mkimage */
39 static void show_image_types(void)
40 {
41 	struct image_type_params *tparams;
42 	int order[IH_TYPE_COUNT];
43 	int count;
44 	int type;
45 	int i;
46 
47 	/* Sort the names in order of short name for easier reading */
48 	memset(order, '\0', sizeof(order));
49 	for (count = 0, type = 0; type < IH_TYPE_COUNT; type++) {
50 		tparams = imagetool_get_type(type);
51 		if (tparams)
52 			order[count++] = type;
53 	}
54 	qsort(order, count, sizeof(int), h_compare_image_name);
55 
56 	fprintf(stderr, "\nInvalid image type. Supported image types:\n");
57 	for (i = 0; i < count; i++) {
58 		type = order[i];
59 		tparams = imagetool_get_type(type);
60 		if (tparams) {
61 			fprintf(stderr, "\t%-15s  %s\n",
62 				genimg_get_type_short_name(type),
63 				genimg_get_type_name(type));
64 		}
65 	}
66 	fprintf(stderr, "\n");
67 }
68 
69 static void usage(const char *msg)
70 {
71 	fprintf(stderr, "Error: %s\n", msg);
72 	fprintf(stderr, "Usage: %s -l image\n"
73 			 "          -l ==> list image header information\n",
74 		params.cmdname);
75 	fprintf(stderr,
76 		"       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
77 		"          -A ==> set architecture to 'arch'\n"
78 		"          -O ==> set operating system to 'os'\n"
79 		"          -T ==> set image type to 'type'\n"
80 		"          -C ==> set compression type 'comp'\n"
81 		"          -a ==> set load address to 'addr' (hex)\n"
82 		"          -e ==> set entry point to 'ep' (hex)\n"
83 		"          -n ==> set image name to 'name'\n"
84 		"          -d ==> use image data from 'datafile'\n"
85 		"          -x ==> set XIP (execute in place)\n",
86 		params.cmdname);
87 	fprintf(stderr,
88 		"       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] fit-image\n"
89 		"           <dtb> file is used with -f auto, it may occour multiple times.\n",
90 		params.cmdname);
91 	fprintf(stderr,
92 		"          -D => set all options for device tree compiler\n"
93 		"          -f => input filename for FIT source\n");
94 #ifdef CONFIG_FIT_SIGNATURE
95 	fprintf(stderr,
96 		"Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-r]\n"
97 		"          -k => set directory containing private keys\n"
98 		"          -K => write public keys to this .dtb file\n"
99 		"          -c => add comment in signature node\n"
100 		"          -F => re-sign existing FIT image\n"
101 		"          -r => mark keys used as 'required' in dtb\n");
102 #else
103 	fprintf(stderr,
104 		"Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
105 #endif
106 	fprintf(stderr, "       %s -V ==> print version information and exit\n",
107 		params.cmdname);
108 	fprintf(stderr, "Use -T to see a list of available image types\n");
109 
110 	exit(EXIT_FAILURE);
111 }
112 
113 static int add_content(int type, const char *fname)
114 {
115 	struct content_info *cont;
116 
117 	cont = calloc(1, sizeof(*cont));
118 	if (!cont)
119 		return -1;
120 	cont->type = type;
121 	cont->fname = fname;
122 	if (params.content_tail)
123 		params.content_tail->next = cont;
124 	else
125 		params.content_head = cont;
126 	params.content_tail = cont;
127 
128 	return 0;
129 }
130 
131 static void process_args(int argc, char **argv)
132 {
133 	char *ptr;
134 	int type = IH_TYPE_INVALID;
135 	char *datafile = NULL;
136 	int opt;
137 
138 	while ((opt = getopt(argc, argv,
139 			     "a:A:b:cC:d:D:e:Ef:Fk:K:ln:O:rR:qsT:vVx")) != -1) {
140 		switch (opt) {
141 		case 'a':
142 			params.addr = strtoull(optarg, &ptr, 16);
143 			if (*ptr) {
144 				fprintf(stderr, "%s: invalid load address %s\n",
145 					params.cmdname, optarg);
146 				exit(EXIT_FAILURE);
147 			}
148 			break;
149 		case 'A':
150 			params.arch = genimg_get_arch_id(optarg);
151 			if (params.arch < 0)
152 				usage("Invalid architecture");
153 			break;
154 		case 'b':
155 			if (add_content(IH_TYPE_FLATDT, optarg)) {
156 				fprintf(stderr,
157 					"%s: Out of memory adding content '%s'",
158 					params.cmdname, optarg);
159 				exit(EXIT_FAILURE);
160 			}
161 			break;
162 		case 'c':
163 			params.comment = optarg;
164 			break;
165 		case 'C':
166 			params.comp = genimg_get_comp_id(optarg);
167 			if (params.comp < 0)
168 				usage("Invalid compression type");
169 			break;
170 		case 'd':
171 			params.datafile = optarg;
172 			params.dflag = 1;
173 			break;
174 		case 'D':
175 			params.dtc = optarg;
176 			break;
177 		case 'e':
178 			params.ep = strtoull(optarg, &ptr, 16);
179 			if (*ptr) {
180 				fprintf(stderr, "%s: invalid entry point %s\n",
181 					params.cmdname, optarg);
182 				exit(EXIT_FAILURE);
183 			}
184 			params.eflag = 1;
185 			break;
186 		case 'E':
187 			params.external_data = true;
188 			break;
189 		case 'f':
190 			datafile = optarg;
191 			params.auto_its = !strcmp(datafile, "auto");
192 			/* no break */
193 		case 'F':
194 			/*
195 			 * The flattened image tree (FIT) format
196 			 * requires a flattened device tree image type
197 			 */
198 			params.fit_image_type = params.type;
199 			params.type = IH_TYPE_FLATDT;
200 			params.fflag = 1;
201 			break;
202 		case 'k':
203 			params.keydir = optarg;
204 			break;
205 		case 'K':
206 			params.keydest = optarg;
207 			break;
208 		case 'l':
209 			params.lflag = 1;
210 			break;
211 		case 'n':
212 			params.imagename = optarg;
213 			break;
214 		case 'O':
215 			params.os = genimg_get_os_id(optarg);
216 			if (params.os < 0)
217 				usage("Invalid operating system");
218 			break;
219 		case 'q':
220 			params.quiet = 1;
221 			break;
222 		case 'r':
223 			params.require_keys = 1;
224 			break;
225 		case 'R':
226 			/*
227 			 * This entry is for the second configuration
228 			 * file, if only one is not enough.
229 			 */
230 			params.imagename2 = optarg;
231 			break;
232 		case 's':
233 			params.skipcpy = 1;
234 			break;
235 		case 'T':
236 			type = genimg_get_type_id(optarg);
237 			if (type < 0) {
238 				show_image_types();
239 				usage("Invalid image type");
240 			}
241 			break;
242 		case 'v':
243 			params.vflag++;
244 			break;
245 		case 'V':
246 			printf("mkimage version %s\n", PLAIN_VERSION);
247 			exit(EXIT_SUCCESS);
248 		case 'x':
249 			params.xflag++;
250 			break;
251 		default:
252 			usage("Invalid option");
253 		}
254 	}
255 
256 	/* The last parameter is expected to be the imagefile */
257 	if (optind < argc)
258 		params.imagefile = argv[optind];
259 
260 	/*
261 	 * For auto-generated FIT images we need to know the image type to put
262 	 * in the FIT, which is separate from the file's image type (which
263 	 * will always be IH_TYPE_FLATDT in this case).
264 	 */
265 	if (params.type == IH_TYPE_FLATDT) {
266 		params.fit_image_type = type;
267 		if (!params.auto_its)
268 			params.datafile = datafile;
269 	} else if (type != IH_TYPE_INVALID) {
270 		params.type = type;
271 	}
272 
273 	if (!params.imagefile)
274 		usage("Missing output filename");
275 }
276 
277 
278 int main(int argc, char **argv)
279 {
280 	int ifd = -1;
281 	struct stat sbuf;
282 	char *ptr;
283 	int retval = 0;
284 	struct image_type_params *tparams = NULL;
285 	int pad_len = 0;
286 	int dfd;
287 
288 	params.cmdname = *argv;
289 	params.addr = 0;
290 	params.ep = 0;
291 
292 	process_args(argc, argv);
293 
294 	/* set tparams as per input type_id */
295 	tparams = imagetool_get_type(params.type);
296 	if (tparams == NULL) {
297 		fprintf (stderr, "%s: unsupported type %s\n",
298 			params.cmdname, genimg_get_type_name(params.type));
299 		exit (EXIT_FAILURE);
300 	}
301 
302 	/*
303 	 * check the passed arguments parameters meets the requirements
304 	 * as per image type to be generated/listed
305 	 */
306 	if (tparams->check_params)
307 		if (tparams->check_params (&params))
308 			usage("Bad parameters for image type");
309 
310 	if (!params.eflag) {
311 		params.ep = params.addr;
312 		/* If XIP, entry point must be after the U-Boot header */
313 		if (params.xflag)
314 			params.ep += tparams->header_size;
315 	}
316 
317 	if (params.fflag){
318 		if (tparams->fflag_handle)
319 			/*
320 			 * in some cases, some additional processing needs
321 			 * to be done if fflag is defined
322 			 *
323 			 * For ex. fit_handle_file for Fit file support
324 			 */
325 			retval = tparams->fflag_handle(&params);
326 
327 		if (retval != EXIT_SUCCESS)
328 			exit (retval);
329 	}
330 
331 	if (params.lflag || params.fflag) {
332 		ifd = open (params.imagefile, O_RDONLY|O_BINARY);
333 	} else {
334 		ifd = open (params.imagefile,
335 			O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
336 	}
337 
338 	if (ifd < 0) {
339 		fprintf (stderr, "%s: Can't open %s: %s\n",
340 			params.cmdname, params.imagefile,
341 			strerror(errno));
342 		exit (EXIT_FAILURE);
343 	}
344 
345 	if (params.lflag || params.fflag) {
346 		/*
347 		 * list header information of existing image
348 		 */
349 		if (fstat(ifd, &sbuf) < 0) {
350 			fprintf (stderr, "%s: Can't stat %s: %s\n",
351 				params.cmdname, params.imagefile,
352 				strerror(errno));
353 			exit (EXIT_FAILURE);
354 		}
355 
356 		if ((unsigned)sbuf.st_size < tparams->header_size) {
357 			fprintf (stderr,
358 				"%s: Bad size: \"%s\" is not valid image\n",
359 				params.cmdname, params.imagefile);
360 			exit (EXIT_FAILURE);
361 		}
362 
363 		ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
364 		if (ptr == MAP_FAILED) {
365 			fprintf (stderr, "%s: Can't read %s: %s\n",
366 				params.cmdname, params.imagefile,
367 				strerror(errno));
368 			exit (EXIT_FAILURE);
369 		}
370 
371 		/*
372 		 * scan through mkimage registry for all supported image types
373 		 * and verify the input image file header for match
374 		 * Print the image information for matched image type
375 		 * Returns the error code if not matched
376 		 */
377 		retval = imagetool_verify_print_header(ptr, &sbuf,
378 				tparams, &params);
379 
380 		(void) munmap((void *)ptr, sbuf.st_size);
381 		(void) close (ifd);
382 
383 		exit (retval);
384 	}
385 
386 	if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
387 		dfd = open(params.datafile, O_RDONLY | O_BINARY);
388 		if (dfd < 0) {
389 			fprintf(stderr, "%s: Can't open %s: %s\n",
390 				params.cmdname, params.datafile,
391 				strerror(errno));
392 			exit(EXIT_FAILURE);
393 		}
394 
395 		if (fstat(dfd, &sbuf) < 0) {
396 			fprintf(stderr, "%s: Can't stat %s: %s\n",
397 				params.cmdname, params.datafile,
398 				strerror(errno));
399 			exit(EXIT_FAILURE);
400 		}
401 
402 		params.file_size = sbuf.st_size + tparams->header_size;
403 		close(dfd);
404 	}
405 
406 	/*
407 	 * In case there an header with a variable
408 	 * length will be added, the corresponding
409 	 * function is called. This is responsible to
410 	 * allocate memory for the header itself.
411 	 */
412 	if (tparams->vrec_header)
413 		pad_len = tparams->vrec_header(&params, tparams);
414 	else
415 		memset(tparams->hdr, 0, tparams->header_size);
416 
417 	if (write(ifd, tparams->hdr, tparams->header_size)
418 					!= tparams->header_size) {
419 		fprintf (stderr, "%s: Write error on %s: %s\n",
420 			params.cmdname, params.imagefile, strerror(errno));
421 		exit (EXIT_FAILURE);
422 	}
423 
424 	if (!params.skipcpy) {
425 		if (params.type == IH_TYPE_MULTI ||
426 		    params.type == IH_TYPE_SCRIPT) {
427 			char *file = params.datafile;
428 			uint32_t size;
429 
430 			for (;;) {
431 				char *sep = NULL;
432 
433 				if (file) {
434 					if ((sep = strchr(file, ':')) != NULL) {
435 						*sep = '\0';
436 					}
437 
438 					if (stat (file, &sbuf) < 0) {
439 						fprintf (stderr, "%s: Can't stat %s: %s\n",
440 							 params.cmdname, file, strerror(errno));
441 						exit (EXIT_FAILURE);
442 					}
443 					size = cpu_to_uimage (sbuf.st_size);
444 				} else {
445 					size = 0;
446 				}
447 
448 				if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
449 					fprintf (stderr, "%s: Write error on %s: %s\n",
450 						 params.cmdname, params.imagefile,
451 						 strerror(errno));
452 					exit (EXIT_FAILURE);
453 				}
454 
455 				if (!file) {
456 					break;
457 				}
458 
459 				if (sep) {
460 					*sep = ':';
461 					file = sep + 1;
462 				} else {
463 					file = NULL;
464 				}
465 			}
466 
467 			file = params.datafile;
468 
469 			for (;;) {
470 				char *sep = strchr(file, ':');
471 				if (sep) {
472 					*sep = '\0';
473 					copy_file (ifd, file, 1);
474 					*sep++ = ':';
475 					file = sep;
476 				} else {
477 					copy_file (ifd, file, 0);
478 					break;
479 				}
480 			}
481 		} else if (params.type == IH_TYPE_PBLIMAGE) {
482 			/* PBL has special Image format, implements its' own */
483 			pbl_load_uboot(ifd, &params);
484 		} else {
485 			copy_file(ifd, params.datafile, pad_len);
486 		}
487 	}
488 
489 	/* We're a bit of paranoid */
490 #if defined(_POSIX_SYNCHRONIZED_IO) && \
491    !defined(__sun__) && \
492    !defined(__FreeBSD__) && \
493    !defined(__OpenBSD__) && \
494    !defined(__APPLE__)
495 	(void) fdatasync (ifd);
496 #else
497 	(void) fsync (ifd);
498 #endif
499 
500 	if (fstat(ifd, &sbuf) < 0) {
501 		fprintf (stderr, "%s: Can't stat %s: %s\n",
502 			params.cmdname, params.imagefile, strerror(errno));
503 		exit (EXIT_FAILURE);
504 	}
505 	params.file_size = sbuf.st_size;
506 
507 	ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
508 	if (ptr == MAP_FAILED) {
509 		fprintf (stderr, "%s: Can't map %s: %s\n",
510 			params.cmdname, params.imagefile, strerror(errno));
511 		exit (EXIT_FAILURE);
512 	}
513 
514 	/* Setup the image header as per input image type*/
515 	if (tparams->set_header)
516 		tparams->set_header (ptr, &sbuf, ifd, &params);
517 	else {
518 		fprintf (stderr, "%s: Can't set header for %s: %s\n",
519 			params.cmdname, tparams->name, strerror(errno));
520 		exit (EXIT_FAILURE);
521 	}
522 
523 	/* Print the image information by processing image header */
524 	if (tparams->print_header)
525 		tparams->print_header (ptr);
526 	else {
527 		fprintf (stderr, "%s: Can't print header for %s: %s\n",
528 			params.cmdname, tparams->name, strerror(errno));
529 		exit (EXIT_FAILURE);
530 	}
531 
532 	(void) munmap((void *)ptr, sbuf.st_size);
533 
534 	/* We're a bit of paranoid */
535 #if defined(_POSIX_SYNCHRONIZED_IO) && \
536    !defined(__sun__) && \
537    !defined(__FreeBSD__) && \
538    !defined(__OpenBSD__) && \
539    !defined(__APPLE__)
540 	(void) fdatasync (ifd);
541 #else
542 	(void) fsync (ifd);
543 #endif
544 
545 	if (close(ifd)) {
546 		fprintf (stderr, "%s: Write error on %s: %s\n",
547 			params.cmdname, params.imagefile, strerror(errno));
548 		exit (EXIT_FAILURE);
549 	}
550 
551 	exit (EXIT_SUCCESS);
552 }
553 
554 static void
555 copy_file (int ifd, const char *datafile, int pad)
556 {
557 	int dfd;
558 	struct stat sbuf;
559 	unsigned char *ptr;
560 	int tail;
561 	int zero = 0;
562 	uint8_t zeros[4096];
563 	int offset = 0;
564 	int size;
565 	struct image_type_params *tparams = imagetool_get_type(params.type);
566 
567 	memset(zeros, 0, sizeof(zeros));
568 
569 	if (params.vflag) {
570 		fprintf (stderr, "Adding Image %s\n", datafile);
571 	}
572 
573 	if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
574 		fprintf (stderr, "%s: Can't open %s: %s\n",
575 			params.cmdname, datafile, strerror(errno));
576 		exit (EXIT_FAILURE);
577 	}
578 
579 	if (fstat(dfd, &sbuf) < 0) {
580 		fprintf (stderr, "%s: Can't stat %s: %s\n",
581 			params.cmdname, datafile, strerror(errno));
582 		exit (EXIT_FAILURE);
583 	}
584 
585 	ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
586 	if (ptr == MAP_FAILED) {
587 		fprintf (stderr, "%s: Can't read %s: %s\n",
588 			params.cmdname, datafile, strerror(errno));
589 		exit (EXIT_FAILURE);
590 	}
591 
592 	if (params.xflag) {
593 		unsigned char *p = NULL;
594 		/*
595 		 * XIP: do not append the image_header_t at the
596 		 * beginning of the file, but consume the space
597 		 * reserved for it.
598 		 */
599 
600 		if ((unsigned)sbuf.st_size < tparams->header_size) {
601 			fprintf (stderr,
602 				"%s: Bad size: \"%s\" is too small for XIP\n",
603 				params.cmdname, datafile);
604 			exit (EXIT_FAILURE);
605 		}
606 
607 		for (p = ptr; p < ptr + tparams->header_size; p++) {
608 			if ( *p != 0xff ) {
609 				fprintf (stderr,
610 					"%s: Bad file: \"%s\" has invalid buffer for XIP\n",
611 					params.cmdname, datafile);
612 				exit (EXIT_FAILURE);
613 			}
614 		}
615 
616 		offset = tparams->header_size;
617 	}
618 
619 	size = sbuf.st_size - offset;
620 	if (write(ifd, ptr + offset, size) != size) {
621 		fprintf (stderr, "%s: Write error on %s: %s\n",
622 			params.cmdname, params.imagefile, strerror(errno));
623 		exit (EXIT_FAILURE);
624 	}
625 
626 	tail = size % 4;
627 	if ((pad == 1) && (tail != 0)) {
628 
629 		if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
630 			fprintf (stderr, "%s: Write error on %s: %s\n",
631 				params.cmdname, params.imagefile,
632 				strerror(errno));
633 			exit (EXIT_FAILURE);
634 		}
635 	} else if (pad > 1) {
636 		while (pad > 0) {
637 			int todo = sizeof(zeros);
638 
639 			if (todo > pad)
640 				todo = pad;
641 			if (write(ifd, (char *)&zeros, todo) != todo) {
642 				fprintf(stderr, "%s: Write error on %s: %s\n",
643 					params.cmdname, params.imagefile,
644 					strerror(errno));
645 				exit(EXIT_FAILURE);
646 			}
647 			pad -= todo;
648 		}
649 	}
650 
651 	(void) munmap((void *)ptr, sbuf.st_size);
652 	(void) close (dfd);
653 }
654