forked from Xilinx/u-boot-xlnx
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmxsimage.c
2365 lines (1954 loc) · 50.3 KB
/
mxsimage.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Freescale i.MX23/i.MX28 SB image generator
*
* Copyright (C) 2012-2013 Marek Vasut <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifdef CONFIG_MXS
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <openssl/evp.h>
#include "imagetool.h"
#include "mxsimage.h"
#include "pbl_crc32.h"
#include <image.h>
/*
* OpenSSL 1.1.0 and newer compatibility functions:
* https://wiki.openssl.org/index.php/1.1_API_Changes
*/
#if OPENSSL_VERSION_NUMBER < 0x10100000L
static void *OPENSSL_zalloc(size_t num)
{
void *ret = OPENSSL_malloc(num);
if (ret != NULL)
memset(ret, 0, num);
return ret;
}
EVP_MD_CTX *EVP_MD_CTX_new(void)
{
return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
}
void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
{
EVP_MD_CTX_cleanup(ctx);
OPENSSL_free(ctx);
}
int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
{
return EVP_CIPHER_CTX_cleanup(ctx);
}
#endif
/*
* DCD block
* |-Write to address command block
* | 0xf00 == 0xf33d
* | 0xba2 == 0xb33f
* |-ORR address with mask command block
* | 0xf00 |= 0x1337
* |-Write to address command block
* | 0xba2 == 0xd00d
* :
*/
#define SB_HAB_DCD_WRITE 0xccUL
#define SB_HAB_DCD_CHECK 0xcfUL
#define SB_HAB_DCD_NOOP 0xc0UL
#define SB_HAB_DCD_MASK_BIT (1 << 3)
#define SB_HAB_DCD_SET_BIT (1 << 4)
/* Addr.n = Value.n */
#define SB_DCD_WRITE \
(SB_HAB_DCD_WRITE << 24)
/* Addr.n &= ~Value.n */
#define SB_DCD_ANDC \
((SB_HAB_DCD_WRITE << 24) | SB_HAB_DCD_SET_BIT)
/* Addr.n |= Value.n */
#define SB_DCD_ORR \
((SB_HAB_DCD_WRITE << 24) | SB_HAB_DCD_SET_BIT | SB_HAB_DCD_MASK_BIT)
/* (Addr.n & Value.n) == 0 */
#define SB_DCD_CHK_EQZ \
(SB_HAB_DCD_CHECK << 24)
/* (Addr.n & Value.n) == Value.n */
#define SB_DCD_CHK_EQ \
((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_SET_BIT)
/* (Addr.n & Value.n) != Value.n */
#define SB_DCD_CHK_NEQ \
((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_MASK_BIT)
/* (Addr.n & Value.n) != 0 */
#define SB_DCD_CHK_NEZ \
((SB_HAB_DCD_CHECK << 24) | SB_HAB_DCD_SET_BIT | SB_HAB_DCD_MASK_BIT)
/* NOP */
#define SB_DCD_NOOP \
(SB_HAB_DCD_NOOP << 24)
struct sb_dcd_ctx {
struct sb_dcd_ctx *dcd;
uint32_t id;
/* The DCD block. */
uint32_t *payload;
/* Size of the whole DCD block. */
uint32_t size;
/* Pointer to previous DCD command block. */
uint32_t *prev_dcd_head;
};
/*
* IMAGE
* |-SECTION
* | |-CMD
* | |-CMD
* | `-CMD
* |-SECTION
* | |-CMD
* : :
*/
struct sb_cmd_list {
char *cmd;
size_t len;
unsigned int lineno;
};
struct sb_cmd_ctx {
uint32_t size;
struct sb_cmd_ctx *cmd;
uint8_t *data;
uint32_t length;
struct sb_command payload;
struct sb_command c_payload;
};
struct sb_section_ctx {
uint32_t size;
/* Section flags */
unsigned int boot:1;
struct sb_section_ctx *sect;
struct sb_cmd_ctx *cmd_head;
struct sb_cmd_ctx *cmd_tail;
struct sb_sections_header payload;
};
struct sb_image_ctx {
unsigned int in_section:1;
unsigned int in_dcd:1;
/* Image configuration */
unsigned int display_progress:1;
unsigned int silent_dump:1;
char *input_filename;
char *output_filename;
char *cfg_filename;
uint8_t image_key[16];
/* Number of section in the image */
unsigned int sect_count;
/* Bootable section */
unsigned int sect_boot;
unsigned int sect_boot_found:1;
struct sb_section_ctx *sect_head;
struct sb_section_ctx *sect_tail;
struct sb_dcd_ctx *dcd_head;
struct sb_dcd_ctx *dcd_tail;
EVP_CIPHER_CTX *cipher_ctx;
EVP_MD_CTX *md_ctx;
uint8_t digest[32];
struct sb_key_dictionary_key sb_dict_key;
struct sb_boot_image_header payload;
};
/*
* Instruction semantics:
* NOOP
* TAG [LAST]
* LOAD address file
* LOAD IVT address IVT_entry_point
* FILL address pattern length
* JUMP [HAB] address [r0_arg]
* CALL [HAB] address [r0_arg]
* MODE mode
* For i.MX23, mode = USB/I2C/SPI1_FLASH/SPI2_FLASH/NAND_BCH
* JTAG/SPI3_EEPROM/SD_SSP0/SD_SSP1
* For i.MX28, mode = USB/I2C/SPI2_FLASH/SPI3_FLASH/NAND_BCH
* JTAG/SPI2_EEPROM/SD_SSP0/SD_SSP1
*/
/*
* AES libcrypto
*/
static int sb_aes_init(struct sb_image_ctx *ictx, uint8_t *iv, int enc)
{
EVP_CIPHER_CTX *ctx;
int ret;
/* If there is no init vector, init vector is all zeroes. */
if (!iv)
iv = ictx->image_key;
ctx = EVP_CIPHER_CTX_new();
ret = EVP_CipherInit(ctx, EVP_aes_128_cbc(), ictx->image_key, iv, enc);
if (ret == 1) {
EVP_CIPHER_CTX_set_padding(ctx, 0);
ictx->cipher_ctx = ctx;
}
return ret;
}
static int sb_aes_crypt(struct sb_image_ctx *ictx, uint8_t *in_data,
uint8_t *out_data, int in_len)
{
EVP_CIPHER_CTX *ctx = ictx->cipher_ctx;
int ret, outlen;
uint8_t *outbuf;
outbuf = malloc(in_len);
if (!outbuf)
return -ENOMEM;
memset(outbuf, 0, sizeof(in_len));
ret = EVP_CipherUpdate(ctx, outbuf, &outlen, in_data, in_len);
if (!ret) {
ret = -EINVAL;
goto err;
}
if (out_data)
memcpy(out_data, outbuf, outlen);
err:
free(outbuf);
return ret;
}
static int sb_aes_deinit(EVP_CIPHER_CTX *ctx)
{
return EVP_CIPHER_CTX_reset(ctx);
}
static int sb_aes_reinit(struct sb_image_ctx *ictx, int enc)
{
int ret;
EVP_CIPHER_CTX *ctx = ictx->cipher_ctx;
struct sb_boot_image_header *sb_header = &ictx->payload;
uint8_t *iv = sb_header->iv;
ret = sb_aes_deinit(ctx);
if (!ret)
return ret;
return sb_aes_init(ictx, iv, enc);
}
/*
* Debug
*/
static void soprintf(struct sb_image_ctx *ictx, const char *fmt, ...)
{
va_list ap;
if (ictx->silent_dump)
return;
va_start(ap, fmt);
vfprintf(stdout, fmt, ap);
va_end(ap);
}
/*
* Code
*/
static time_t sb_get_timestamp(void)
{
struct tm time_2000 = {
.tm_yday = 1, /* Jan. 1st */
.tm_year = 100, /* 2000 */
};
time_t seconds_to_2000 = mktime(&time_2000);
time_t seconds_to_now = time(NULL);
return seconds_to_now - seconds_to_2000;
}
static int sb_get_time(time_t time, struct tm *tm)
{
struct tm time_2000 = {
.tm_yday = 1, /* Jan. 1st */
.tm_year = 0, /* 1900 */
};
const time_t seconds_to_2000 = mktime(&time_2000);
const time_t seconds_to_now = seconds_to_2000 + time;
struct tm *ret;
ret = gmtime_r(&seconds_to_now, tm);
return ret ? 0 : -EINVAL;
}
static void sb_encrypt_sb_header(struct sb_image_ctx *ictx)
{
EVP_MD_CTX *md_ctx = ictx->md_ctx;
struct sb_boot_image_header *sb_header = &ictx->payload;
uint8_t *sb_header_ptr = (uint8_t *)sb_header;
/* Encrypt the header, compute the digest. */
sb_aes_crypt(ictx, sb_header_ptr, NULL, sizeof(*sb_header));
EVP_DigestUpdate(md_ctx, sb_header_ptr, sizeof(*sb_header));
}
static void sb_encrypt_sb_sections_header(struct sb_image_ctx *ictx)
{
EVP_MD_CTX *md_ctx = ictx->md_ctx;
struct sb_section_ctx *sctx = ictx->sect_head;
struct sb_sections_header *shdr;
uint8_t *sb_sections_header_ptr;
const int size = sizeof(*shdr);
while (sctx) {
shdr = &sctx->payload;
sb_sections_header_ptr = (uint8_t *)shdr;
sb_aes_crypt(ictx, sb_sections_header_ptr,
ictx->sb_dict_key.cbc_mac, size);
EVP_DigestUpdate(md_ctx, sb_sections_header_ptr, size);
sctx = sctx->sect;
};
}
static void sb_encrypt_key_dictionary_key(struct sb_image_ctx *ictx)
{
EVP_MD_CTX *md_ctx = ictx->md_ctx;
sb_aes_crypt(ictx, ictx->image_key, ictx->sb_dict_key.key,
sizeof(ictx->sb_dict_key.key));
EVP_DigestUpdate(md_ctx, &ictx->sb_dict_key, sizeof(ictx->sb_dict_key));
}
static void sb_decrypt_key_dictionary_key(struct sb_image_ctx *ictx)
{
EVP_MD_CTX *md_ctx = ictx->md_ctx;
EVP_DigestUpdate(md_ctx, &ictx->sb_dict_key, sizeof(ictx->sb_dict_key));
sb_aes_crypt(ictx, ictx->sb_dict_key.key, ictx->image_key,
sizeof(ictx->sb_dict_key.key));
}
static void sb_encrypt_tag(struct sb_image_ctx *ictx,
struct sb_cmd_ctx *cctx)
{
EVP_MD_CTX *md_ctx = ictx->md_ctx;
struct sb_command *cmd = &cctx->payload;
sb_aes_crypt(ictx, (uint8_t *)cmd,
(uint8_t *)&cctx->c_payload, sizeof(*cmd));
EVP_DigestUpdate(md_ctx, &cctx->c_payload, sizeof(*cmd));
}
static int sb_encrypt_image(struct sb_image_ctx *ictx)
{
/* Start image-wide crypto. */
ictx->md_ctx = EVP_MD_CTX_new();
EVP_DigestInit(ictx->md_ctx, EVP_sha1());
/*
* SB image header.
*/
sb_aes_init(ictx, NULL, 1);
sb_encrypt_sb_header(ictx);
/*
* SB sections header.
*/
sb_encrypt_sb_sections_header(ictx);
/*
* Key dictionary.
*/
sb_aes_reinit(ictx, 1);
sb_encrypt_key_dictionary_key(ictx);
/*
* Section tags.
*/
struct sb_cmd_ctx *cctx;
struct sb_command *ccmd;
struct sb_section_ctx *sctx = ictx->sect_head;
while (sctx) {
cctx = sctx->cmd_head;
sb_aes_reinit(ictx, 1);
while (cctx) {
ccmd = &cctx->payload;
sb_encrypt_tag(ictx, cctx);
if (ccmd->header.tag == ROM_TAG_CMD) {
sb_aes_reinit(ictx, 1);
} else if (ccmd->header.tag == ROM_LOAD_CMD) {
sb_aes_crypt(ictx, cctx->data, cctx->data,
cctx->length);
EVP_DigestUpdate(ictx->md_ctx, cctx->data,
cctx->length);
}
cctx = cctx->cmd;
}
sctx = sctx->sect;
};
/*
* Dump the SHA1 of the whole image.
*/
sb_aes_reinit(ictx, 1);
EVP_DigestFinal(ictx->md_ctx, ictx->digest, NULL);
EVP_MD_CTX_free(ictx->md_ctx);
sb_aes_crypt(ictx, ictx->digest, ictx->digest, sizeof(ictx->digest));
/* Stop the encryption session. */
sb_aes_deinit(ictx->cipher_ctx);
return 0;
}
static int sb_load_file(struct sb_cmd_ctx *cctx, char *filename)
{
long real_size, roundup_size;
uint8_t *data;
long ret;
unsigned long size;
FILE *fp;
if (!filename) {
fprintf(stderr, "ERR: Missing filename!\n");
return -EINVAL;
}
fp = fopen(filename, "r");
if (!fp)
goto err_open;
ret = fseek(fp, 0, SEEK_END);
if (ret < 0)
goto err_file;
real_size = ftell(fp);
if (real_size < 0)
goto err_file;
ret = fseek(fp, 0, SEEK_SET);
if (ret < 0)
goto err_file;
roundup_size = roundup(real_size, SB_BLOCK_SIZE);
data = calloc(1, roundup_size);
if (!data)
goto err_file;
size = fread(data, 1, real_size, fp);
if (size != (unsigned long)real_size)
goto err_alloc;
cctx->data = data;
cctx->length = roundup_size;
fclose(fp);
return 0;
err_alloc:
free(data);
err_file:
fclose(fp);
err_open:
fprintf(stderr, "ERR: Failed to load file \"%s\"\n", filename);
return -EINVAL;
}
static uint8_t sb_command_checksum(struct sb_command *inst)
{
uint8_t *inst_ptr = (uint8_t *)inst;
uint8_t csum = 0;
unsigned int i;
for (i = 0; i < sizeof(struct sb_command); i++)
csum += inst_ptr[i];
return csum;
}
static int sb_token_to_long(char *tok, uint32_t *rid)
{
char *endptr;
unsigned long id;
if (tok[0] != '0' || tok[1] != 'x') {
fprintf(stderr, "ERR: Invalid hexadecimal number!\n");
return -EINVAL;
}
tok += 2;
errno = 0;
id = strtoul(tok, &endptr, 16);
if ((errno == ERANGE && id == ULONG_MAX) || (errno != 0 && id == 0)) {
fprintf(stderr, "ERR: Value can't be decoded!\n");
return -EINVAL;
}
/* Check for 32-bit overflow. */
if (id > 0xffffffff) {
fprintf(stderr, "ERR: Value too big!\n");
return -EINVAL;
}
if (endptr == tok) {
fprintf(stderr, "ERR: Deformed value!\n");
return -EINVAL;
}
*rid = (uint32_t)id;
return 0;
}
static int sb_grow_dcd(struct sb_dcd_ctx *dctx, unsigned int inc_size)
{
uint32_t *tmp;
if (!inc_size)
return 0;
dctx->size += inc_size;
tmp = realloc(dctx->payload, dctx->size);
if (!tmp)
return -ENOMEM;
dctx->payload = tmp;
/* Assemble and update the HAB DCD header. */
dctx->payload[0] = htonl((SB_HAB_DCD_TAG << 24) |
(dctx->size << 8) |
SB_HAB_VERSION);
return 0;
}
static int sb_build_dcd(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
{
struct sb_dcd_ctx *dctx;
char *tok;
uint32_t id;
int ret;
dctx = calloc(1, sizeof(*dctx));
if (!dctx)
return -ENOMEM;
ret = sb_grow_dcd(dctx, 4);
if (ret)
goto err_dcd;
/* Read DCD block number. */
tok = strtok(cmd->cmd, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: DCD block without number!\n",
cmd->lineno);
ret = -EINVAL;
goto err_dcd;
}
/* Parse the DCD block number. */
ret = sb_token_to_long(tok, &id);
if (ret) {
fprintf(stderr, "#%i ERR: Malformed DCD block number!\n",
cmd->lineno);
goto err_dcd;
}
dctx->id = id;
/*
* The DCD block is now constructed. Append it to the list.
* WARNING: The DCD size is still not computed and will be
* updated while parsing it's commands.
*/
if (!ictx->dcd_head) {
ictx->dcd_head = dctx;
ictx->dcd_tail = dctx;
} else {
ictx->dcd_tail->dcd = dctx;
ictx->dcd_tail = dctx;
}
return 0;
err_dcd:
free(dctx->payload);
free(dctx);
return ret;
}
static int sb_build_dcd_block(struct sb_image_ctx *ictx,
struct sb_cmd_list *cmd,
uint32_t type)
{
char *tok;
uint32_t address, value, length;
int ret;
struct sb_dcd_ctx *dctx = ictx->dcd_tail;
uint32_t *dcd;
if (dctx->prev_dcd_head && (type != SB_DCD_NOOP) &&
((dctx->prev_dcd_head[0] & 0xff0000ff) == type)) {
/* Same instruction as before, just append it. */
ret = sb_grow_dcd(dctx, 8);
if (ret)
return ret;
} else if (type == SB_DCD_NOOP) {
ret = sb_grow_dcd(dctx, 4);
if (ret)
return ret;
/* Update DCD command block pointer. */
dctx->prev_dcd_head = dctx->payload +
dctx->size / sizeof(*dctx->payload) - 1;
/* NOOP has only 4 bytes and no payload. */
goto noop;
} else {
/*
* Either a different instruction block started now
* or this is the first instruction block.
*/
ret = sb_grow_dcd(dctx, 12);
if (ret)
return ret;
/* Update DCD command block pointer. */
dctx->prev_dcd_head = dctx->payload +
dctx->size / sizeof(*dctx->payload) - 3;
}
dcd = dctx->payload + dctx->size / sizeof(*dctx->payload) - 2;
/*
* Prepare the command.
*/
tok = strtok(cmd->cmd, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: Missing DCD address!\n",
cmd->lineno);
ret = -EINVAL;
goto err;
}
/* Read DCD destination address. */
ret = sb_token_to_long(tok, &address);
if (ret) {
fprintf(stderr, "#%i ERR: Incorrect DCD address!\n",
cmd->lineno);
goto err;
}
tok = strtok(NULL, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: Missing DCD value!\n",
cmd->lineno);
ret = -EINVAL;
goto err;
}
/* Read DCD operation value. */
ret = sb_token_to_long(tok, &value);
if (ret) {
fprintf(stderr, "#%i ERR: Incorrect DCD value!\n",
cmd->lineno);
goto err;
}
/* Fill in the new DCD entry. */
dcd[0] = htonl(address);
dcd[1] = htonl(value);
noop:
/* Update the DCD command block. */
length = dctx->size -
((dctx->prev_dcd_head - dctx->payload) *
sizeof(*dctx->payload));
dctx->prev_dcd_head[0] = htonl(type | (length << 8));
err:
return ret;
}
static int sb_build_section(struct sb_image_ctx *ictx, struct sb_cmd_list *cmd)
{
struct sb_section_ctx *sctx;
struct sb_sections_header *shdr;
char *tok;
uint32_t bootable = 0;
uint32_t id;
int ret;
sctx = calloc(1, sizeof(*sctx));
if (!sctx)
return -ENOMEM;
/* Read section number. */
tok = strtok(cmd->cmd, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: Section without number!\n",
cmd->lineno);
ret = -EINVAL;
goto err_sect;
}
/* Parse the section number. */
ret = sb_token_to_long(tok, &id);
if (ret) {
fprintf(stderr, "#%i ERR: Malformed section number!\n",
cmd->lineno);
goto err_sect;
}
/* Read section's BOOTABLE flag. */
tok = strtok(NULL, " ");
if (tok && (strlen(tok) == 8) && !strncmp(tok, "BOOTABLE", 8))
bootable = SB_SECTION_FLAG_BOOTABLE;
sctx->boot = bootable;
shdr = &sctx->payload;
shdr->section_number = id;
shdr->section_flags = bootable;
/*
* The section is now constructed. Append it to the list.
* WARNING: The section size is still not computed and will
* be updated while parsing it's commands.
*/
ictx->sect_count++;
/* Mark that this section is bootable one. */
if (bootable) {
if (ictx->sect_boot_found) {
fprintf(stderr,
"#%i WARN: Multiple bootable section!\n",
cmd->lineno);
} else {
ictx->sect_boot = id;
ictx->sect_boot_found = 1;
}
}
if (!ictx->sect_head) {
ictx->sect_head = sctx;
ictx->sect_tail = sctx;
} else {
ictx->sect_tail->sect = sctx;
ictx->sect_tail = sctx;
}
return 0;
err_sect:
free(sctx);
return ret;
}
static int sb_build_command_nop(struct sb_image_ctx *ictx)
{
struct sb_section_ctx *sctx = ictx->sect_tail;
struct sb_cmd_ctx *cctx;
struct sb_command *ccmd;
cctx = calloc(1, sizeof(*cctx));
if (!cctx)
return -ENOMEM;
ccmd = &cctx->payload;
/*
* Construct the command.
*/
ccmd->header.checksum = 0x5a;
ccmd->header.tag = ROM_NOP_CMD;
cctx->size = sizeof(*ccmd);
/*
* Append the command to the last section.
*/
if (!sctx->cmd_head) {
sctx->cmd_head = cctx;
sctx->cmd_tail = cctx;
} else {
sctx->cmd_tail->cmd = cctx;
sctx->cmd_tail = cctx;
}
return 0;
}
static int sb_build_command_tag(struct sb_image_ctx *ictx,
struct sb_cmd_list *cmd)
{
struct sb_section_ctx *sctx = ictx->sect_tail;
struct sb_cmd_ctx *cctx;
struct sb_command *ccmd;
char *tok;
cctx = calloc(1, sizeof(*cctx));
if (!cctx)
return -ENOMEM;
ccmd = &cctx->payload;
/*
* Prepare the command.
*/
/* Check for the LAST keyword. */
tok = strtok(cmd->cmd, " ");
if (tok && !strcmp(tok, "LAST"))
ccmd->header.flags = ROM_TAG_CMD_FLAG_ROM_LAST_TAG;
/*
* Construct the command.
*/
ccmd->header.checksum = 0x5a;
ccmd->header.tag = ROM_TAG_CMD;
cctx->size = sizeof(*ccmd);
/*
* Append the command to the last section.
*/
if (!sctx->cmd_head) {
sctx->cmd_head = cctx;
sctx->cmd_tail = cctx;
} else {
sctx->cmd_tail->cmd = cctx;
sctx->cmd_tail = cctx;
}
return 0;
}
static int sb_build_command_load(struct sb_image_ctx *ictx,
struct sb_cmd_list *cmd)
{
struct sb_section_ctx *sctx = ictx->sect_tail;
struct sb_cmd_ctx *cctx;
struct sb_command *ccmd;
char *tok;
int ret, is_ivt = 0, is_dcd = 0;
uint32_t dest, dcd = 0;
cctx = calloc(1, sizeof(*cctx));
if (!cctx)
return -ENOMEM;
ccmd = &cctx->payload;
/*
* Prepare the command.
*/
tok = strtok(cmd->cmd, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: Missing LOAD address or 'IVT'!\n",
cmd->lineno);
ret = -EINVAL;
goto err;
}
/* Check for "IVT" flag. */
if (!strcmp(tok, "IVT"))
is_ivt = 1;
if (!strcmp(tok, "DCD"))
is_dcd = 1;
if (is_ivt || is_dcd) {
tok = strtok(NULL, " ");
if (!tok) {
fprintf(stderr, "#%i ERR: Missing LOAD address!\n",
cmd->lineno);
ret = -EINVAL;
goto err;
}
}
/* Read load destination address. */
ret = sb_token_to_long(tok, &dest);
if (ret) {
fprintf(stderr, "#%i ERR: Incorrect LOAD address!\n",
cmd->lineno);
goto err;
}
/* Read filename or IVT entrypoint or DCD block ID. */
tok = strtok(NULL, " ");
if (!tok) {
fprintf(stderr,
"#%i ERR: Missing LOAD filename or IVT ep or DCD block ID!\n",
cmd->lineno);
ret = -EINVAL;
goto err;
}
if (is_ivt) {
/* Handle IVT. */
struct sb_ivt_header *ivt;
uint32_t ivtep;
ret = sb_token_to_long(tok, &ivtep);
if (ret) {
fprintf(stderr,
"#%i ERR: Incorrect IVT entry point!\n",
cmd->lineno);
goto err;
}
ivt = calloc(1, sizeof(*ivt));
if (!ivt) {
ret = -ENOMEM;
goto err;
}
ivt->header = sb_hab_ivt_header();
ivt->entry = ivtep;
ivt->self = dest;
cctx->data = (uint8_t *)ivt;
cctx->length = sizeof(*ivt);
} else if (is_dcd) {
struct sb_dcd_ctx *dctx = ictx->dcd_head;
uint32_t dcdid;
uint8_t *payload;
uint32_t asize;
ret = sb_token_to_long(tok, &dcdid);
if (ret) {
fprintf(stderr,
"#%i ERR: Incorrect DCD block ID!\n",
cmd->lineno);
goto err;
}
while (dctx) {
if (dctx->id == dcdid)
break;
dctx = dctx->dcd;
}
if (!dctx) {
fprintf(stderr, "#%i ERR: DCD block %08x not found!\n",
cmd->lineno, dcdid);
goto err;
}
asize = roundup(dctx->size, SB_BLOCK_SIZE);
payload = calloc(1, asize);
if (!payload) {
ret = -ENOMEM;
goto err;
}
memcpy(payload, dctx->payload, dctx->size);
cctx->data = payload;
cctx->length = asize;
/* Set the Load DCD flag. */
dcd = ROM_LOAD_CMD_FLAG_DCD_LOAD;
} else {
/* Regular LOAD of a file. */
ret = sb_load_file(cctx, tok);
if (ret) {
fprintf(stderr, "#%i ERR: Cannot load '%s'!\n",
cmd->lineno, tok);
goto err;
}
}
if (cctx->length & (SB_BLOCK_SIZE - 1)) {
fprintf(stderr, "#%i ERR: Unaligned payload!\n",
cmd->lineno);