xref: /openbmc/u-boot/tools/mkimage.c (revision 977a39e6) 
1 /*
2  * (C) Copyright 2008 Semihalf
3  *
4  * (C) Copyright 2000-2009
5  * DENX Software Engineering
6  * Wolfgang Denk, wd@denx.de
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 
24 #include "mkimage.h"
25 #include <image.h>
26 #include <version.h>
27 
28 static void copy_file(int, const char *, int);
29 static void usage(void);
30 
31 /* image_type_params link list to maintain registered image type supports */
32 struct image_type_params *mkimage_tparams = NULL;
33 
34 /* parameters initialized by core will be used by the image type code */
35 struct mkimage_params params = {
36 	.os = IH_OS_LINUX,
37 	.arch = IH_ARCH_PPC,
38 	.type = IH_TYPE_KERNEL,
39 	.comp = IH_COMP_GZIP,
40 	.dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
41 	.imagename = "",
42 };
43 
44 /*
45  * mkimage_register -
46  *
47  * It is used to register respective image generation/list support to the
48  * mkimage core
49  *
50  * the input struct image_type_params is checked and appended to the link
51  * list, if the input structure is already registered, error
52  */
53 void mkimage_register (struct image_type_params *tparams)
54 {
55 	struct image_type_params **tp;
56 
57 	if (!tparams) {
58 		fprintf (stderr, "%s: %s: Null input\n",
59 			params.cmdname, __FUNCTION__);
60 		exit (EXIT_FAILURE);
61 	}
62 
63 	/* scan the linked list, check for registry and point the last one */
64 	for (tp = &mkimage_tparams; *tp != NULL; tp = &(*tp)->next) {
65 		if (!strcmp((*tp)->name, tparams->name)) {
66 			fprintf (stderr, "%s: %s already registered\n",
67 				params.cmdname, tparams->name);
68 			return;
69 		}
70 	}
71 
72 	/* add input struct entry at the end of link list */
73 	*tp = tparams;
74 	/* mark input entry as last entry in the link list */
75 	tparams->next = NULL;
76 
77 	debug ("Registered %s\n", tparams->name);
78 }
79 
80 /*
81  * mkimage_get_type -
82  *
83  * It scans all registers image type supports
84  * checks the input type_id for each supported image type
85  *
86  * if successful,
87  * 	returns respective image_type_params pointer if success
88  * if input type_id is not supported by any of image_type_support
89  * 	returns NULL
90  */
91 struct image_type_params *mkimage_get_type(int type)
92 {
93 	struct image_type_params *curr;
94 
95 	for (curr = mkimage_tparams; curr != NULL; curr = curr->next) {
96 		if (curr->check_image_type) {
97 			if (!curr->check_image_type (type))
98 				return curr;
99 		}
100 	}
101 	return NULL;
102 }
103 
104 /*
105  * mkimage_verify_print_header -
106  *
107  * It scans mkimage_tparams link list,
108  * verifies image_header for each supported image type
109  * if verification is successful, prints respective header
110  *
111  * returns negative if input image format does not match with any of
112  * supported image types
113  */
114 int mkimage_verify_print_header (void *ptr, struct stat *sbuf)
115 {
116 	int retval = -1;
117 	struct image_type_params *curr;
118 
119 	for (curr = mkimage_tparams; curr != NULL; curr = curr->next ) {
120 		if (curr->verify_header) {
121 			retval = curr->verify_header (
122 				(unsigned char *)ptr, sbuf->st_size,
123 				&params);
124 
125 			if (retval == 0) {
126 				/*
127 				 * Print the image information
128 				 * if verify is successful
129 				 */
130 				if (curr->print_header)
131 					curr->print_header (ptr);
132 				else {
133 					fprintf (stderr,
134 					"%s: print_header undefined for %s\n",
135 					params.cmdname, curr->name);
136 				}
137 				break;
138 			}
139 		}
140 	}
141 	return retval;
142 }
143 
144 int
145 main (int argc, char **argv)
146 {
147 	int ifd = -1;
148 	struct stat sbuf;
149 	char *ptr;
150 	int retval = 0;
151 	struct image_type_params *tparams = NULL;
152 
153 	/* Init Kirkwood Boot image generation/list support */
154 	init_kwb_image_type ();
155 	/* Init Freescale imx Boot image generation/list support */
156 	init_imx_image_type ();
157 	/* Init FIT image generation/list support */
158 	init_fit_image_type ();
159 	/* Init TI OMAP Boot image generation/list support */
160 	init_omap_image_type();
161 	/* Init Default image generation/list support */
162 	init_default_image_type ();
163 	/* Init Davinci UBL support */
164 	init_ubl_image_type();
165 	/* Init Davinci AIS support */
166 	init_ais_image_type();
167 
168 	params.cmdname = *argv;
169 	params.addr = params.ep = 0;
170 
171 	while (--argc > 0 && **++argv == '-') {
172 		while (*++*argv) {
173 			switch (**argv) {
174 			case 'l':
175 				params.lflag = 1;
176 				break;
177 			case 'A':
178 				if ((--argc <= 0) ||
179 					(params.arch =
180 					genimg_get_arch_id (*++argv)) < 0)
181 					usage ();
182 				goto NXTARG;
183 			case 'C':
184 				if ((--argc <= 0) ||
185 					(params.comp =
186 					genimg_get_comp_id (*++argv)) < 0)
187 					usage ();
188 				goto NXTARG;
189 			case 'D':
190 				if (--argc <= 0)
191 					usage ();
192 				params.dtc = *++argv;
193 				goto NXTARG;
194 
195 			case 'O':
196 				if ((--argc <= 0) ||
197 					(params.os =
198 					genimg_get_os_id (*++argv)) < 0)
199 					usage ();
200 				goto NXTARG;
201 			case 'T':
202 				if ((--argc <= 0) ||
203 					(params.type =
204 					genimg_get_type_id (*++argv)) < 0)
205 					usage ();
206 				goto NXTARG;
207 
208 			case 'a':
209 				if (--argc <= 0)
210 					usage ();
211 				params.addr = strtoul (*++argv, &ptr, 16);
212 				if (*ptr) {
213 					fprintf (stderr,
214 						"%s: invalid load address %s\n",
215 						params.cmdname, *argv);
216 					exit (EXIT_FAILURE);
217 				}
218 				goto NXTARG;
219 			case 'd':
220 				if (--argc <= 0)
221 					usage ();
222 				params.datafile = *++argv;
223 				params.dflag = 1;
224 				goto NXTARG;
225 			case 'e':
226 				if (--argc <= 0)
227 					usage ();
228 				params.ep = strtoul (*++argv, &ptr, 16);
229 				if (*ptr) {
230 					fprintf (stderr,
231 						"%s: invalid entry point %s\n",
232 						params.cmdname, *argv);
233 					exit (EXIT_FAILURE);
234 				}
235 				params.eflag = 1;
236 				goto NXTARG;
237 			case 'f':
238 				if (--argc <= 0)
239 					usage ();
240 				/*
241 				 * The flattened image tree (FIT) format
242 				 * requires a flattened device tree image type
243 				 */
244 				params.type = IH_TYPE_FLATDT;
245 				params.datafile = *++argv;
246 				params.fflag = 1;
247 				goto NXTARG;
248 			case 'n':
249 				if (--argc <= 0)
250 					usage ();
251 				params.imagename = *++argv;
252 				goto NXTARG;
253 			case 's':
254 				params.skipcpy = 1;
255 				break;
256 			case 'v':
257 				params.vflag++;
258 				break;
259 			case 'V':
260 				printf("mkimage version %s\n", PLAIN_VERSION);
261 				exit(EXIT_SUCCESS);
262 			case 'x':
263 				params.xflag++;
264 				break;
265 			default:
266 				usage ();
267 			}
268 		}
269 NXTARG:		;
270 	}
271 
272 	if (argc != 1)
273 		usage ();
274 
275 	/* set tparams as per input type_id */
276 	tparams = mkimage_get_type(params.type);
277 	if (tparams == NULL) {
278 		fprintf (stderr, "%s: unsupported type %s\n",
279 			params.cmdname, genimg_get_type_name(params.type));
280 		exit (EXIT_FAILURE);
281 	}
282 
283 	/*
284 	 * check the passed arguments parameters meets the requirements
285 	 * as per image type to be generated/listed
286 	 */
287 	if (tparams->check_params)
288 		if (tparams->check_params (&params))
289 			usage ();
290 
291 	if (!params.eflag) {
292 		params.ep = params.addr;
293 		/* If XIP, entry point must be after the U-Boot header */
294 		if (params.xflag)
295 			params.ep += tparams->header_size;
296 	}
297 
298 	params.imagefile = *argv;
299 
300 	if (params.fflag){
301 		if (tparams->fflag_handle)
302 			/*
303 			 * in some cases, some additional processing needs
304 			 * to be done if fflag is defined
305 			 *
306 			 * For ex. fit_handle_file for Fit file support
307 			 */
308 			retval = tparams->fflag_handle(&params);
309 
310 		if (retval != EXIT_SUCCESS)
311 			exit (retval);
312 	}
313 
314 	if (params.lflag || params.fflag) {
315 		ifd = open (params.imagefile, O_RDONLY|O_BINARY);
316 	} else {
317 		ifd = open (params.imagefile,
318 			O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
319 	}
320 
321 	if (ifd < 0) {
322 		fprintf (stderr, "%s: Can't open %s: %s\n",
323 			params.cmdname, params.imagefile,
324 			strerror(errno));
325 		exit (EXIT_FAILURE);
326 	}
327 
328 	if (params.lflag || params.fflag) {
329 		/*
330 		 * list header information of existing image
331 		 */
332 		if (fstat(ifd, &sbuf) < 0) {
333 			fprintf (stderr, "%s: Can't stat %s: %s\n",
334 				params.cmdname, params.imagefile,
335 				strerror(errno));
336 			exit (EXIT_FAILURE);
337 		}
338 
339 		if ((unsigned)sbuf.st_size < tparams->header_size) {
340 			fprintf (stderr,
341 				"%s: Bad size: \"%s\" is not valid image\n",
342 				params.cmdname, params.imagefile);
343 			exit (EXIT_FAILURE);
344 		}
345 
346 		ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
347 		if (ptr == MAP_FAILED) {
348 			fprintf (stderr, "%s: Can't read %s: %s\n",
349 				params.cmdname, params.imagefile,
350 				strerror(errno));
351 			exit (EXIT_FAILURE);
352 		}
353 
354 		/*
355 		 * scan through mkimage registry for all supported image types
356 		 * and verify the input image file header for match
357 		 * Print the image information for matched image type
358 		 * Returns the error code if not matched
359 		 */
360 		retval = mkimage_verify_print_header (ptr, &sbuf);
361 
362 		(void) munmap((void *)ptr, sbuf.st_size);
363 		(void) close (ifd);
364 
365 		exit (retval);
366 	}
367 
368 	/*
369 	 * In case there an header with a variable
370 	 * length will be added, the corresponding
371 	 * function is called. This is responsible to
372 	 * allocate memory for the header itself.
373 	 */
374 	if (tparams->vrec_header)
375 		tparams->vrec_header(&params, tparams);
376 	else
377 		memset(tparams->hdr, 0, tparams->header_size);
378 
379 	if (write(ifd, tparams->hdr, tparams->header_size)
380 					!= tparams->header_size) {
381 		fprintf (stderr, "%s: Write error on %s: %s\n",
382 			params.cmdname, params.imagefile, strerror(errno));
383 		exit (EXIT_FAILURE);
384 	}
385 
386 	if (!params.skipcpy) {
387 		if (params.type == IH_TYPE_MULTI ||
388 		    params.type == IH_TYPE_SCRIPT) {
389 			char *file = params.datafile;
390 			uint32_t size;
391 
392 			for (;;) {
393 				char *sep = NULL;
394 
395 				if (file) {
396 					if ((sep = strchr(file, ':')) != NULL) {
397 						*sep = '\0';
398 					}
399 
400 					if (stat (file, &sbuf) < 0) {
401 						fprintf (stderr, "%s: Can't stat %s: %s\n",
402 							 params.cmdname, file, strerror(errno));
403 						exit (EXIT_FAILURE);
404 					}
405 					size = cpu_to_uimage (sbuf.st_size);
406 				} else {
407 					size = 0;
408 				}
409 
410 				if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
411 					fprintf (stderr, "%s: Write error on %s: %s\n",
412 						 params.cmdname, params.imagefile,
413 						 strerror(errno));
414 					exit (EXIT_FAILURE);
415 				}
416 
417 				if (!file) {
418 					break;
419 				}
420 
421 				if (sep) {
422 					*sep = ':';
423 					file = sep + 1;
424 				} else {
425 					file = NULL;
426 				}
427 			}
428 
429 			file = params.datafile;
430 
431 			for (;;) {
432 				char *sep = strchr(file, ':');
433 				if (sep) {
434 					*sep = '\0';
435 					copy_file (ifd, file, 1);
436 					*sep++ = ':';
437 					file = sep;
438 				} else {
439 					copy_file (ifd, file, 0);
440 					break;
441 				}
442 			}
443 		} else {
444 			copy_file (ifd, params.datafile, 0);
445 		}
446 	}
447 
448 	/* We're a bit of paranoid */
449 #if defined(_POSIX_SYNCHRONIZED_IO) && \
450    !defined(__sun__) && \
451    !defined(__FreeBSD__) && \
452    !defined(__APPLE__)
453 	(void) fdatasync (ifd);
454 #else
455 	(void) fsync (ifd);
456 #endif
457 
458 	if (fstat(ifd, &sbuf) < 0) {
459 		fprintf (stderr, "%s: Can't stat %s: %s\n",
460 			params.cmdname, params.imagefile, strerror(errno));
461 		exit (EXIT_FAILURE);
462 	}
463 
464 	ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
465 	if (ptr == MAP_FAILED) {
466 		fprintf (stderr, "%s: Can't map %s: %s\n",
467 			params.cmdname, params.imagefile, strerror(errno));
468 		exit (EXIT_FAILURE);
469 	}
470 
471 	/* Setup the image header as per input image type*/
472 	if (tparams->set_header)
473 		tparams->set_header (ptr, &sbuf, ifd, &params);
474 	else {
475 		fprintf (stderr, "%s: Can't set header for %s: %s\n",
476 			params.cmdname, tparams->name, strerror(errno));
477 		exit (EXIT_FAILURE);
478 	}
479 
480 	/* Print the image information by processing image header */
481 	if (tparams->print_header)
482 		tparams->print_header (ptr);
483 	else {
484 		fprintf (stderr, "%s: Can't print header for %s: %s\n",
485 			params.cmdname, tparams->name, strerror(errno));
486 		exit (EXIT_FAILURE);
487 	}
488 
489 	(void) munmap((void *)ptr, sbuf.st_size);
490 
491 	/* We're a bit of paranoid */
492 #if defined(_POSIX_SYNCHRONIZED_IO) && \
493    !defined(__sun__) && \
494    !defined(__FreeBSD__) && \
495    !defined(__APPLE__)
496 	(void) fdatasync (ifd);
497 #else
498 	(void) fsync (ifd);
499 #endif
500 
501 	if (close(ifd)) {
502 		fprintf (stderr, "%s: Write error on %s: %s\n",
503 			params.cmdname, params.imagefile, strerror(errno));
504 		exit (EXIT_FAILURE);
505 	}
506 
507 	exit (EXIT_SUCCESS);
508 }
509 
510 static void
511 copy_file (int ifd, const char *datafile, int pad)
512 {
513 	int dfd;
514 	struct stat sbuf;
515 	unsigned char *ptr;
516 	int tail;
517 	int zero = 0;
518 	int offset = 0;
519 	int size;
520 	struct image_type_params *tparams = mkimage_get_type (params.type);
521 
522 	if (params.vflag) {
523 		fprintf (stderr, "Adding Image %s\n", datafile);
524 	}
525 
526 	if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
527 		fprintf (stderr, "%s: Can't open %s: %s\n",
528 			params.cmdname, datafile, strerror(errno));
529 		exit (EXIT_FAILURE);
530 	}
531 
532 	if (fstat(dfd, &sbuf) < 0) {
533 		fprintf (stderr, "%s: Can't stat %s: %s\n",
534 			params.cmdname, datafile, strerror(errno));
535 		exit (EXIT_FAILURE);
536 	}
537 
538 	ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
539 	if (ptr == MAP_FAILED) {
540 		fprintf (stderr, "%s: Can't read %s: %s\n",
541 			params.cmdname, datafile, strerror(errno));
542 		exit (EXIT_FAILURE);
543 	}
544 
545 	if (params.xflag) {
546 		unsigned char *p = NULL;
547 		/*
548 		 * XIP: do not append the image_header_t at the
549 		 * beginning of the file, but consume the space
550 		 * reserved for it.
551 		 */
552 
553 		if ((unsigned)sbuf.st_size < tparams->header_size) {
554 			fprintf (stderr,
555 				"%s: Bad size: \"%s\" is too small for XIP\n",
556 				params.cmdname, datafile);
557 			exit (EXIT_FAILURE);
558 		}
559 
560 		for (p = ptr; p < ptr + tparams->header_size; p++) {
561 			if ( *p != 0xff ) {
562 				fprintf (stderr,
563 					"%s: Bad file: \"%s\" has invalid buffer for XIP\n",
564 					params.cmdname, datafile);
565 				exit (EXIT_FAILURE);
566 			}
567 		}
568 
569 		offset = tparams->header_size;
570 	}
571 
572 	size = sbuf.st_size - offset;
573 	if (write(ifd, ptr + offset, size) != size) {
574 		fprintf (stderr, "%s: Write error on %s: %s\n",
575 			params.cmdname, params.imagefile, strerror(errno));
576 		exit (EXIT_FAILURE);
577 	}
578 
579 	if (pad && ((tail = size % 4) != 0)) {
580 
581 		if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
582 			fprintf (stderr, "%s: Write error on %s: %s\n",
583 				params.cmdname, params.imagefile,
584 				strerror(errno));
585 			exit (EXIT_FAILURE);
586 		}
587 	}
588 
589 	(void) munmap((void *)ptr, sbuf.st_size);
590 	(void) close (dfd);
591 }
592 
593 void
594 usage ()
595 {
596 	fprintf (stderr, "Usage: %s -l image\n"
597 			 "          -l ==> list image header information\n",
598 		params.cmdname);
599 	fprintf (stderr, "       %s [-x] -A arch -O os -T type -C comp "
600 			 "-a addr -e ep -n name -d data_file[:data_file...] image\n"
601 			 "          -A ==> set architecture to 'arch'\n"
602 			 "          -O ==> set operating system to 'os'\n"
603 			 "          -T ==> set image type to 'type'\n"
604 			 "          -C ==> set compression type 'comp'\n"
605 			 "          -a ==> set load address to 'addr' (hex)\n"
606 			 "          -e ==> set entry point to 'ep' (hex)\n"
607 			 "          -n ==> set image name to 'name'\n"
608 			 "          -d ==> use image data from 'datafile'\n"
609 			 "          -x ==> set XIP (execute in place)\n",
610 		params.cmdname);
611 	fprintf (stderr, "       %s [-D dtc_options] -f fit-image.its fit-image\n",
612 		params.cmdname);
613 	fprintf (stderr, "       %s -V ==> print version information and exit\n",
614 		params.cmdname);
615 
616 	exit (EXIT_FAILURE);
617 }
618