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rockchip: mkimage: simplify start/size calculation for rc4_encode
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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 "imximage.h"
13 #include <image.h>
14 #include <version.h>
15
16 static void copy_file(int, const char *, int);
17
18 /* parameters initialized by core will be used by the image type code */
19 static struct image_tool_params params = {
20         .os = IH_OS_LINUX,
21         .arch = IH_ARCH_PPC,
22         .type = IH_TYPE_KERNEL,
23         .comp = IH_COMP_GZIP,
24         .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
25         .imagename = "",
26         .imagename2 = "",
27 };
28
29 static enum ih_category cur_category;
30
31 static int h_compare_category_name(const void *vtype1, const void *vtype2)
32 {
33         const int *type1 = vtype1;
34         const int *type2 = vtype2;
35         const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
36         const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
37
38         return strcmp(name1, name2);
39 }
40
41 static int show_valid_options(enum ih_category category)
42 {
43         int *order;
44         int count;
45         int item;
46         int i;
47
48         count = genimg_get_cat_count(category);
49         order = calloc(count, sizeof(*order));
50         if (!order)
51                 return -ENOMEM;
52
53         /* Sort the names in order of short name for easier reading */
54         for (item = 0; item < count; item++)
55                 order[item] = item;
56         cur_category = category;
57         qsort(order, count, sizeof(int), h_compare_category_name);
58
59         fprintf(stderr, "\nInvalid %s, supported are:\n",
60                 genimg_get_cat_desc(category));
61         for (i = 0; i < count; i++) {
62                 item = order[i];
63                 fprintf(stderr, "\t%-15s  %s\n",
64                         genimg_get_cat_short_name(category, item),
65                         genimg_get_cat_name(category, item));
66         }
67         fprintf(stderr, "\n");
68         free(order);
69
70         return 0;
71 }
72
73 static void usage(const char *msg)
74 {
75         fprintf(stderr, "Error: %s\n", msg);
76         fprintf(stderr, "Usage: %s -l image\n"
77                          "          -l ==> list image header information\n",
78                 params.cmdname);
79         fprintf(stderr,
80                 "       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
81                 "          -A ==> set architecture to 'arch'\n"
82                 "          -O ==> set operating system to 'os'\n"
83                 "          -T ==> set image type to 'type'\n"
84                 "          -C ==> set compression type 'comp'\n"
85                 "          -a ==> set load address to 'addr' (hex)\n"
86                 "          -e ==> set entry point to 'ep' (hex)\n"
87                 "          -n ==> set image name to 'name'\n"
88                 "          -d ==> use image data from 'datafile'\n"
89                 "          -x ==> set XIP (execute in place)\n",
90                 params.cmdname);
91         fprintf(stderr,
92                 "       %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-i <ramdisk.cpio.gz>] fit-image\n"
93                 "           <dtb> file is used with -f auto, it may occur multiple times.\n",
94                 params.cmdname);
95         fprintf(stderr,
96                 "          -D => set all options for device tree compiler\n"
97                 "          -f => input filename for FIT source\n"
98                 "          -i => input filename for ramdisk file\n");
99 #ifdef CONFIG_FIT_SIGNATURE
100         fprintf(stderr,
101                 "Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
102                 "          -E => place data outside of the FIT structure\n"
103                 "          -k => set directory containing private keys\n"
104                 "          -K => write public keys to this .dtb file\n"
105                 "          -c => add comment in signature node\n"
106                 "          -F => re-sign existing FIT image\n"
107                 "          -p => place external data at a static position\n"
108                 "          -r => mark keys used as 'required' in dtb\n"
109                 "          -N => engine to use for signing (pkcs11)\n");
110 #else
111         fprintf(stderr,
112                 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
113 #endif
114         fprintf(stderr, "       %s -V ==> print version information and exit\n",
115                 params.cmdname);
116         fprintf(stderr, "Use -T to see a list of available image types\n");
117
118         exit(EXIT_FAILURE);
119 }
120
121 static int add_content(int type, const char *fname)
122 {
123         struct content_info *cont;
124
125         cont = calloc(1, sizeof(*cont));
126         if (!cont)
127                 return -1;
128         cont->type = type;
129         cont->fname = fname;
130         if (params.content_tail)
131                 params.content_tail->next = cont;
132         else
133                 params.content_head = cont;
134         params.content_tail = cont;
135
136         return 0;
137 }
138
139 static void process_args(int argc, char **argv)
140 {
141         char *ptr;
142         int type = IH_TYPE_INVALID;
143         char *datafile = NULL;
144         int opt;
145
146         while ((opt = getopt(argc, argv,
147                              "a:A:b:c:C:d:D:e:Ef:Fk:i:K:ln:N:p:O:rR:qsT:vVx")) != -1) {
148                 switch (opt) {
149                 case 'a':
150                         params.addr = strtoull(optarg, &ptr, 16);
151                         if (*ptr) {
152                                 fprintf(stderr, "%s: invalid load address %s\n",
153                                         params.cmdname, optarg);
154                                 exit(EXIT_FAILURE);
155                         }
156                         break;
157                 case 'A':
158                         params.arch = genimg_get_arch_id(optarg);
159                         if (params.arch < 0) {
160                                 show_valid_options(IH_ARCH);
161                                 usage("Invalid architecture");
162                         }
163                         break;
164                 case 'b':
165                         if (add_content(IH_TYPE_FLATDT, optarg)) {
166                                 fprintf(stderr,
167                                         "%s: Out of memory adding content '%s'",
168                                         params.cmdname, optarg);
169                                 exit(EXIT_FAILURE);
170                         }
171                         break;
172                 case 'c':
173                         params.comment = optarg;
174                         break;
175                 case 'C':
176                         params.comp = genimg_get_comp_id(optarg);
177                         if (params.comp < 0) {
178                                 show_valid_options(IH_COMP);
179                                 usage("Invalid compression type");
180                         }
181                         break;
182                 case 'd':
183                         params.datafile = optarg;
184                         params.dflag = 1;
185                         break;
186                 case 'D':
187                         params.dtc = optarg;
188                         break;
189                 case 'e':
190                         params.ep = strtoull(optarg, &ptr, 16);
191                         if (*ptr) {
192                                 fprintf(stderr, "%s: invalid entry point %s\n",
193                                         params.cmdname, optarg);
194                                 exit(EXIT_FAILURE);
195                         }
196                         params.eflag = 1;
197                         break;
198                 case 'E':
199                         params.external_data = true;
200                         break;
201                 case 'f':
202                         datafile = optarg;
203                         params.auto_its = !strcmp(datafile, "auto");
204                         /* no break */
205                 case 'F':
206                         /*
207                          * The flattened image tree (FIT) format
208                          * requires a flattened device tree image type
209                          */
210                         params.type = IH_TYPE_FLATDT;
211                         params.fflag = 1;
212                         break;
213                 case 'i':
214                         params.fit_ramdisk = optarg;
215                         break;
216                 case 'k':
217                         params.keydir = optarg;
218                         break;
219                 case 'K':
220                         params.keydest = optarg;
221                         break;
222                 case 'l':
223                         params.lflag = 1;
224                         break;
225                 case 'n':
226                         params.imagename = optarg;
227                         break;
228                 case 'N':
229                         params.engine_id = optarg;
230                         break;
231                 case 'O':
232                         params.os = genimg_get_os_id(optarg);
233                         if (params.os < 0) {
234                                 show_valid_options(IH_OS);
235                                 usage("Invalid operating system");
236                         }
237                         break;
238                 case 'p':
239                         params.external_offset = strtoull(optarg, &ptr, 16);
240                         if (*ptr) {
241                                 fprintf(stderr, "%s: invalid offset size %s\n",
242                                         params.cmdname, optarg);
243                                 exit(EXIT_FAILURE);
244                         }
245                         break;
246                 case 'q':
247                         params.quiet = 1;
248                         break;
249                 case 'r':
250                         params.require_keys = 1;
251                         break;
252                 case 'R':
253                         /*
254                          * This entry is for the second configuration
255                          * file, if only one is not enough.
256                          */
257                         params.imagename2 = optarg;
258                         break;
259                 case 's':
260                         params.skipcpy = 1;
261                         break;
262                 case 'T':
263                         type = genimg_get_type_id(optarg);
264                         if (type < 0) {
265                                 show_valid_options(IH_TYPE);
266                                 usage("Invalid image type");
267                         }
268                         break;
269                 case 'v':
270                         params.vflag++;
271                         break;
272                 case 'V':
273                         printf("mkimage version %s\n", PLAIN_VERSION);
274                         exit(EXIT_SUCCESS);
275                 case 'x':
276                         params.xflag++;
277                         break;
278                 default:
279                         usage("Invalid option");
280                 }
281         }
282
283         /* The last parameter is expected to be the imagefile */
284         if (optind < argc)
285                 params.imagefile = argv[optind];
286
287         /*
288          * For auto-generated FIT images we need to know the image type to put
289          * in the FIT, which is separate from the file's image type (which
290          * will always be IH_TYPE_FLATDT in this case).
291          */
292         if (params.type == IH_TYPE_FLATDT) {
293                 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
294                 /* For auto_its, datafile is always 'auto' */
295                 if (!params.auto_its)
296                         params.datafile = datafile;
297                 else if (!params.datafile)
298                         usage("Missing data file for auto-FIT (use -d)");
299         } else if (type != IH_TYPE_INVALID) {
300                 params.type = type;
301         }
302
303         if (!params.imagefile)
304                 usage("Missing output filename");
305 }
306
307 int main(int argc, char **argv)
308 {
309         int ifd = -1;
310         struct stat sbuf;
311         char *ptr;
312         int retval = 0;
313         struct image_type_params *tparams = NULL;
314         int pad_len = 0;
315         int dfd;
316
317         params.cmdname = *argv;
318         params.addr = 0;
319         params.ep = 0;
320
321         process_args(argc, argv);
322
323         /* set tparams as per input type_id */
324         tparams = imagetool_get_type(params.type);
325         if (tparams == NULL) {
326                 fprintf (stderr, "%s: unsupported type %s\n",
327                         params.cmdname, genimg_get_type_name(params.type));
328                 exit (EXIT_FAILURE);
329         }
330
331         /*
332          * check the passed arguments parameters meets the requirements
333          * as per image type to be generated/listed
334          */
335         if (tparams->check_params)
336                 if (tparams->check_params (&params))
337                         usage("Bad parameters for image type");
338
339         if (!params.eflag) {
340                 params.ep = params.addr;
341                 /* If XIP, entry point must be after the U-Boot header */
342                 if (params.xflag)
343                         params.ep += tparams->header_size;
344         }
345
346         if (params.fflag){
347                 if (tparams->fflag_handle)
348                         /*
349                          * in some cases, some additional processing needs
350                          * to be done if fflag is defined
351                          *
352                          * For ex. fit_handle_file for Fit file support
353                          */
354                         retval = tparams->fflag_handle(&params);
355
356                 if (retval != EXIT_SUCCESS)
357                         exit (retval);
358         }
359
360         if (params.lflag || params.fflag) {
361                 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
362         } else {
363                 ifd = open (params.imagefile,
364                         O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
365         }
366
367         if (ifd < 0) {
368                 fprintf (stderr, "%s: Can't open %s: %s\n",
369                         params.cmdname, params.imagefile,
370                         strerror(errno));
371                 exit (EXIT_FAILURE);
372         }
373
374         if (params.lflag || params.fflag) {
375                 /*
376                  * list header information of existing image
377                  */
378                 if (fstat(ifd, &sbuf) < 0) {
379                         fprintf (stderr, "%s: Can't stat %s: %s\n",
380                                 params.cmdname, params.imagefile,
381                                 strerror(errno));
382                         exit (EXIT_FAILURE);
383                 }
384
385                 if ((unsigned)sbuf.st_size < tparams->header_size) {
386                         fprintf (stderr,
387                                 "%s: Bad size: \"%s\" is not valid image\n",
388                                 params.cmdname, params.imagefile);
389                         exit (EXIT_FAILURE);
390                 }
391
392                 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
393                 if (ptr == MAP_FAILED) {
394                         fprintf (stderr, "%s: Can't read %s: %s\n",
395                                 params.cmdname, params.imagefile,
396                                 strerror(errno));
397                         exit (EXIT_FAILURE);
398                 }
399
400                 /*
401                  * scan through mkimage registry for all supported image types
402                  * and verify the input image file header for match
403                  * Print the image information for matched image type
404                  * Returns the error code if not matched
405                  */
406                 retval = imagetool_verify_print_header(ptr, &sbuf,
407                                 tparams, &params);
408
409                 (void) munmap((void *)ptr, sbuf.st_size);
410                 (void) close (ifd);
411
412                 exit (retval);
413         }
414
415         if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
416                 dfd = open(params.datafile, O_RDONLY | O_BINARY);
417                 if (dfd < 0) {
418                         fprintf(stderr, "%s: Can't open %s: %s\n",
419                                 params.cmdname, params.datafile,
420                                 strerror(errno));
421                         exit(EXIT_FAILURE);
422                 }
423
424                 if (fstat(dfd, &sbuf) < 0) {
425                         fprintf(stderr, "%s: Can't stat %s: %s\n",
426                                 params.cmdname, params.datafile,
427                                 strerror(errno));
428                         exit(EXIT_FAILURE);
429                 }
430
431                 params.file_size = sbuf.st_size + tparams->header_size;
432                 close(dfd);
433         }
434
435         /*
436          * In case there an header with a variable
437          * length will be added, the corresponding
438          * function is called. This is responsible to
439          * allocate memory for the header itself.
440          */
441         if (tparams->vrec_header)
442                 pad_len = tparams->vrec_header(&params, tparams);
443         else
444                 memset(tparams->hdr, 0, tparams->header_size);
445
446         if (write(ifd, tparams->hdr, tparams->header_size)
447                                         != tparams->header_size) {
448                 fprintf (stderr, "%s: Write error on %s: %s\n",
449                         params.cmdname, params.imagefile, strerror(errno));
450                 exit (EXIT_FAILURE);
451         }
452
453         if (!params.skipcpy) {
454                 if (params.type == IH_TYPE_MULTI ||
455                     params.type == IH_TYPE_SCRIPT) {
456                         char *file = params.datafile;
457                         uint32_t size;
458
459                         for (;;) {
460                                 char *sep = NULL;
461
462                                 if (file) {
463                                         if ((sep = strchr(file, ':')) != NULL) {
464                                                 *sep = '\0';
465                                         }
466
467                                         if (stat (file, &sbuf) < 0) {
468                                                 fprintf (stderr, "%s: Can't stat %s: %s\n",
469                                                          params.cmdname, file, strerror(errno));
470                                                 exit (EXIT_FAILURE);
471                                         }
472                                         size = cpu_to_uimage (sbuf.st_size);
473                                 } else {
474                                         size = 0;
475                                 }
476
477                                 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
478                                         fprintf (stderr, "%s: Write error on %s: %s\n",
479                                                  params.cmdname, params.imagefile,
480                                                  strerror(errno));
481                                         exit (EXIT_FAILURE);
482                                 }
483
484                                 if (!file) {
485                                         break;
486                                 }
487
488                                 if (sep) {
489                                         *sep = ':';
490                                         file = sep + 1;
491                                 } else {
492                                         file = NULL;
493                                 }
494                         }
495
496                         file = params.datafile;
497
498                         for (;;) {
499                                 char *sep = strchr(file, ':');
500                                 if (sep) {
501                                         *sep = '\0';
502                                         copy_file (ifd, file, 1);
503                                         *sep++ = ':';
504                                         file = sep;
505                                 } else {
506                                         copy_file (ifd, file, 0);
507                                         break;
508                                 }
509                         }
510                 } else if (params.type == IH_TYPE_PBLIMAGE) {
511                         /* PBL has special Image format, implements its' own */
512                         pbl_load_uboot(ifd, &params);
513                 } else {
514                         copy_file(ifd, params.datafile, pad_len);
515                 }
516                 if (params.type == IH_TYPE_FIRMWARE_IVT) {
517                         /* Add alignment and IVT */
518                         uint32_t aligned_filesize = (params.file_size + 0x1000
519                                         - 1) & ~(0x1000 - 1);
520                         flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
521                                         params.addr, 0, 0, 0, params.addr
522                                                         + aligned_filesize
523                                                         - tparams->header_size,
524                                         params.addr + aligned_filesize
525                                                         - tparams->header_size
526                                                         + 0x20, 0 };
527                         int i = params.file_size;
528                         for (; i < aligned_filesize; i++) {
529                                 if (write(ifd, (char *) &i, 1) != 1) {
530                                         fprintf(stderr,
531                                                         "%s: Write error on %s: %s\n",
532                                                         params.cmdname,
533                                                         params.imagefile,
534                                                         strerror(errno));
535                                         exit(EXIT_FAILURE);
536                                 }
537                         }
538                         if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
539                                         != sizeof(flash_header_v2_t)) {
540                                 fprintf(stderr, "%s: Write error on %s: %s\n",
541                                                 params.cmdname,
542                                                 params.imagefile,
543                                                 strerror(errno));
544                                 exit(EXIT_FAILURE);
545                         }
546                 }
547         }
548
549         /* We're a bit of paranoid */
550 #if defined(_POSIX_SYNCHRONIZED_IO) && \
551    !defined(__sun__) && \
552    !defined(__FreeBSD__) && \
553    !defined(__OpenBSD__) && \
554    !defined(__APPLE__)
555         (void) fdatasync (ifd);
556 #else
557         (void) fsync (ifd);
558 #endif
559
560         if (fstat(ifd, &sbuf) < 0) {
561                 fprintf (stderr, "%s: Can't stat %s: %s\n",
562                         params.cmdname, params.imagefile, strerror(errno));
563                 exit (EXIT_FAILURE);
564         }
565         params.file_size = sbuf.st_size;
566
567         ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
568         if (ptr == MAP_FAILED) {
569                 fprintf (stderr, "%s: Can't map %s: %s\n",
570                         params.cmdname, params.imagefile, strerror(errno));
571                 exit (EXIT_FAILURE);
572         }
573
574         /* Setup the image header as per input image type*/
575         if (tparams->set_header)
576                 tparams->set_header (ptr, &sbuf, ifd, &params);
577         else {
578                 fprintf (stderr, "%s: Can't set header for %s: %s\n",
579                         params.cmdname, tparams->name, strerror(errno));
580                 exit (EXIT_FAILURE);
581         }
582
583         /* Print the image information by processing image header */
584         if (tparams->print_header)
585                 tparams->print_header (ptr);
586         else {
587                 fprintf (stderr, "%s: Can't print header for %s: %s\n",
588                         params.cmdname, tparams->name, strerror(errno));
589                 exit (EXIT_FAILURE);
590         }
591
592         (void) munmap((void *)ptr, sbuf.st_size);
593
594         /* We're a bit of paranoid */
595 #if defined(_POSIX_SYNCHRONIZED_IO) && \
596    !defined(__sun__) && \
597    !defined(__FreeBSD__) && \
598    !defined(__OpenBSD__) && \
599    !defined(__APPLE__)
600         (void) fdatasync (ifd);
601 #else
602         (void) fsync (ifd);
603 #endif
604
605         if (close(ifd)) {
606                 fprintf (stderr, "%s: Write error on %s: %s\n",
607                         params.cmdname, params.imagefile, strerror(errno));
608                 exit (EXIT_FAILURE);
609         }
610
611         exit (EXIT_SUCCESS);
612 }
613
614 static void
615 copy_file (int ifd, const char *datafile, int pad)
616 {
617         int dfd;
618         struct stat sbuf;
619         unsigned char *ptr;
620         int tail;
621         int zero = 0;
622         uint8_t zeros[4096];
623         int offset = 0;
624         int size;
625         struct image_type_params *tparams = imagetool_get_type(params.type);
626
627         memset(zeros, 0, sizeof(zeros));
628
629         if (params.vflag) {
630                 fprintf (stderr, "Adding Image %s\n", datafile);
631         }
632
633         if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
634                 fprintf (stderr, "%s: Can't open %s: %s\n",
635                         params.cmdname, datafile, strerror(errno));
636                 exit (EXIT_FAILURE);
637         }
638
639         if (fstat(dfd, &sbuf) < 0) {
640                 fprintf (stderr, "%s: Can't stat %s: %s\n",
641                         params.cmdname, datafile, strerror(errno));
642                 exit (EXIT_FAILURE);
643         }
644
645         ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
646         if (ptr == MAP_FAILED) {
647                 fprintf (stderr, "%s: Can't read %s: %s\n",
648                         params.cmdname, datafile, strerror(errno));
649                 exit (EXIT_FAILURE);
650         }
651
652         if (params.xflag) {
653                 unsigned char *p = NULL;
654                 /*
655                  * XIP: do not append the image_header_t at the
656                  * beginning of the file, but consume the space
657                  * reserved for it.
658                  */
659
660                 if ((unsigned)sbuf.st_size < tparams->header_size) {
661                         fprintf (stderr,
662                                 "%s: Bad size: \"%s\" is too small for XIP\n",
663                                 params.cmdname, datafile);
664                         exit (EXIT_FAILURE);
665                 }
666
667                 for (p = ptr; p < ptr + tparams->header_size; p++) {
668                         if ( *p != 0xff ) {
669                                 fprintf (stderr,
670                                         "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
671                                         params.cmdname, datafile);
672                                 exit (EXIT_FAILURE);
673                         }
674                 }
675
676                 offset = tparams->header_size;
677         }
678
679         size = sbuf.st_size - offset;
680         if (write(ifd, ptr + offset, size) != size) {
681                 fprintf (stderr, "%s: Write error on %s: %s\n",
682                         params.cmdname, params.imagefile, strerror(errno));
683                 exit (EXIT_FAILURE);
684         }
685
686         tail = size % 4;
687         if ((pad == 1) && (tail != 0)) {
688
689                 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
690                         fprintf (stderr, "%s: Write error on %s: %s\n",
691                                 params.cmdname, params.imagefile,
692                                 strerror(errno));
693                         exit (EXIT_FAILURE);
694                 }
695         } else if (pad > 1) {
696                 while (pad > 0) {
697                         int todo = sizeof(zeros);
698
699                         if (todo > pad)
700                                 todo = pad;
701                         if (write(ifd, (char *)&zeros, todo) != todo) {
702                                 fprintf(stderr, "%s: Write error on %s: %s\n",
703                                         params.cmdname, params.imagefile,
704                                         strerror(errno));
705                                 exit(EXIT_FAILURE);
706                         }
707                         pad -= todo;
708                 }
709         }
710
711         (void) munmap((void *)ptr, sbuf.st_size);
712         (void) close (dfd);
713 }