summaryrefslogtreecommitdiffstats
path: root/utils/rknanoutils/rkboottool/rkboottool.c
blob: 442046f96a7d2020fe7917be2c137c87a3c95571 (plain)
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
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <stdarg.h>
#include "misc.h"
#include "elf.h"

#define cprintf(col, ...) do {color(col); printf(__VA_ARGS__); }while(0)

bool g_debug = false;

typedef uint8_t packed_bcd_uint8_t;
typedef uint16_t packed_bcd_uint16_t;

struct rknano_date_t
{
    packed_bcd_uint16_t year;
    packed_bcd_uint8_t mday;
    packed_bcd_uint8_t month;
};

struct rknano_version_t
{
    packed_bcd_uint16_t major;
    packed_bcd_uint16_t minor;
    packed_bcd_uint16_t rev;
};

struct rknano_image_t
{
    uint16_t width;
    uint16_t height;
    uint8_t data[0];
};

struct rknano_blob_t
{
    uint32_t offset;
    uint32_t size;
};

#define VENDOR_NAME_SIZE    32
#define MODEL_NAME_SIZE     32
#define MAX_NR_STAGES       4
#define MAX_NR_FONTS        10
#define MAX_NR_GBK          5
#define MAX_NR_STRTBL       10
#define MAX_NR_IMAGERES     10
#define MAX_NR_UNK          10
#define MAGIC_RKNANOFW      "RKnanoFW"
#define MAGIC_RKNANOFW_SIZE 8

struct rknano_header_t
{
    struct rknano_date_t date;
    struct rknano_version_t version;
    uint8_t unk6[6];
    char vendor[VENDOR_NAME_SIZE];
    char model[MODEL_NAME_SIZE];
    uint32_t nr_stages;
    struct rknano_blob_t stage[MAX_NR_STAGES];
    uint32_t nr_fonts;
    struct rknano_blob_t font[MAX_NR_FONTS];
    uint32_t nr_gbk;
    struct rknano_blob_t gbk[MAX_NR_GBK];
    uint32_t nr_strtbl;
    struct rknano_blob_t strtbl[MAX_NR_STRTBL];
    uint32_t nr_imageres;
    struct rknano_blob_t imageres[MAX_NR_IMAGERES];
    uint32_t nr_unk;
    struct rknano_blob_t unk[MAX_NR_UNK];
    uint32_t pad;
    uint32_t size;
    char magic[MAGIC_RKNANOFW_SIZE];
};

char *g_out_prefix = NULL;

static void encode_page(uint8_t *inpg, uint8_t *outpg, const int size)
{

uint8_t key[] = {
        0x7C, 0x4E, 0x03, 0x04,
        0x55, 0x05, 0x09, 0x07,
        0x2D, 0x2C, 0x7B, 0x38,
        0x17, 0x0D, 0x17, 0x11
};
        int i, i3, x, val, idx;

        uint8_t key1[0x100];
        uint8_t key2[0x100];

        for (i=0; i<0x100; i++) {
                key1[i] = i;
                key2[i] = key[i&0xf];
        }

        i3 = 0;
        for (i=0; i<0x100; i++) {
                x = key1[i];
                i3 = key1[i] + i3;
                i3 += key2[i];
                i3 &= 0xff;
                key1[i] = key1[i3];
                key1[i3] = x;
        }

        idx = 0;
        for (i=0; i<size; i++) {
                x = key1[(i+1) & 0xff];
                val = x;
                idx = (x + idx) & 0xff;
                key1[(i+1) & 0xff] = key1[idx];
                key1[idx] = (x & 0xff);
                val = (key1[(i+1)&0xff] + x) & 0xff;
                val = key1[val];
                outpg[i] = val ^ inpg[i];
        }
}

static uint16_t crc(uint8_t *buf, int size)
{
    uint16_t result = 65535;
    for(; size; buf++, size--)
    {
        for(int bit = 128; bit; bit >>= 1)
        {
            if(result & 0x80)
                result = (2 * result) ^ 0x1021;
            else
                result *= 2;
            if(*buf & bit)
                result ^= 0x1021;
        }
    }
    return result;
}

/* scramble mode */
enum {
    NO_ENC,
    CONTINOUS_ENC, /* scramble whole block at once */
    PAGE_ENC       /* nand bootloader is scrambled in 0x200 chunks */
};

static void save_blob(const struct rknano_blob_t *b, void *buf, uint32_t size,
    char *name, int suffix, int enc_mode)
{
    if(g_out_prefix == NULL || b->size == 0 || b->offset + b->size > size)
        return;
    char *path = malloc(strlen(g_out_prefix) + strlen(name) + 32);
    if(suffix >= 0)
        sprintf(path, "%s%s%d.bin", g_out_prefix, name, suffix);
    else
        sprintf(path, "%s%s.bin", g_out_prefix, name);
    FILE *f = fopen(path, "wb");
    uint8_t *ptr = buf + b->offset;
    if(enc_mode != NO_ENC)
    {
        ptr = malloc(b->size);
        int len = b->size;
        uint8_t *buff_ptr = buf + b->offset;
        uint8_t *out_ptr = ptr;
        if(enc_mode == PAGE_ENC)
        {
            while(len >= 0x200)
            {
                encode_page(buff_ptr, out_ptr, 0x200);
                buff_ptr += 0x200;
                out_ptr += 0x200;
                len -= 0x200;
            }
        }
        encode_page(buff_ptr, out_ptr, len);
    }
    
    if(f)
    {
        fwrite(ptr, b->size, 1, f);
        fclose(f);
    }

    if(enc_mode != NO_ENC)
        free(ptr);
}

static void print_blob_interval(const struct rknano_blob_t *b)
{
    cprintf(YELLOW, "%#x -> %#x", b->offset, b->offset + b->size);
}

static int do_nanofw_image(uint8_t *buf, unsigned long size)
{
    if(size < sizeof(struct rknano_header_t))
        return 1;
    struct rknano_header_t *hdr = (void *)buf;
    if(size < hdr->size)
        return 1;
    if(strncmp(hdr->magic, MAGIC_RKNANOFW, MAGIC_RKNANOFW_SIZE))
        return 1;

    cprintf(BLUE, "Header\n");
    cprintf(GREEN, "  Date: ");
    cprintf(YELLOW, "%x/%x/%x\n", hdr->date.mday, hdr->date.month, hdr->date.year);
    cprintf(GREEN, "  Version: ");
    cprintf(YELLOW, "%x.%x.%x\n", hdr->version.major, hdr->version.minor, hdr->version.rev);
    cprintf(GREEN, "  Vendor: ");
    cprintf(YELLOW, "%s\n", hdr->vendor);
    cprintf(GREEN, "  Model: ");
    cprintf(YELLOW, "%s\n", hdr->model);
    cprintf(GREEN, "  Pad: ");
    for(int i = 0; i < 6; i++)
        cprintf(YELLOW, " %02x", hdr->unk6[i]);
    cprintf(YELLOW, "\n");
    cprintf(BLUE, "Stages\n");
    for(unsigned i = 0; i < hdr->nr_stages; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->stage[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->stage[i], buf, size, "stage", i, NO_ENC);
    }
    cprintf(BLUE, "Fonts\n");
    for(unsigned i = 0; i < hdr->nr_fonts; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->font[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->font[i], buf, size, "font", i, NO_ENC);
    }
    cprintf(BLUE, "GBK\n");
    for(unsigned i = 0; i < hdr->nr_gbk; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->gbk[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->gbk[i], buf, size, "gbk", i, NO_ENC);
    }
    cprintf(BLUE, "String Tables\n");
    for(unsigned i = 0; i < hdr->nr_strtbl; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->strtbl[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->strtbl[i], buf, size, "strtbl", i, NO_ENC);
    }
    cprintf(BLUE, "Image Resources\n");
    for(unsigned i = 0; i < hdr->nr_imageres; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->imageres[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->imageres[i], buf, size, "imgres", i, NO_ENC);
    }
    cprintf(BLUE, "Unknown\n");
    for(unsigned i = 0; i < hdr->nr_unk; i++)
    {
        cprintf(GREEN, "  %i: ", i);
        print_blob_interval(&hdr->unk[i]);
        cprintf(OFF, "\n");
        save_blob(&hdr->unk[i], buf, size, "unk", i, NO_ENC);
    }
    cprintf(BLUE, "Other\n");
    cprintf(GREEN, "  Size: ");
    cprintf(YELLOW, "%#x\n", hdr->size);
    cprintf(GREEN, "  Magic: ");
    cprintf(YELLOW, "%." STR(MAGIC_RKNANOFW_SIZE) "s  ", hdr->magic);
    if(strncmp(hdr->magic, MAGIC_RKNANOFW, MAGIC_RKNANOFW_SIZE) == 0)
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");

    return 0;
}

struct rknano_stage_header_t
{
    uint32_t addr;
    uint32_t count;
} __attribute__((packed));

/*
 * The [code_pa,code_pa+code_sz[ and [data_pa,data_pa+data_sz[ ranges
 * are consistent: they never overlap and have no gaps and fill the
 * entire space. Furthermore they match the code sequences so it's
 * reasonable to assume these fields are correct.
 * The other fields are still quite unsure. */

struct rknano_stage_section_t
{
    uint32_t code_pa;
    uint32_t code_va;
    uint32_t code_sz;
    uint32_t data_pa;
    uint32_t data_va;
    uint32_t data_sz;
    uint32_t bss_va;
    uint32_t bss_sz;
} __attribute__((packed));

static void elf_printf(void *user, bool error, const char *fmt, ...)
{
    if(!g_debug && !error)
        return;
    (void) user;
    va_list args;
    va_start(args, fmt);
    vprintf(fmt, args);
    va_end(args);
}

static void elf_write(void *user, uint32_t addr, const void *buf, size_t count)
{
    FILE *f = user;
    fseek(f, addr, SEEK_SET);
    fwrite(buf, count, 1, f);
}

static void extract_elf_section(struct elf_params_t *elf, int count)
{
    if(g_out_prefix == NULL)
        return;
    char *filename = xmalloc(strlen(g_out_prefix) + 32);
    sprintf(filename, "%s%d.elf", g_out_prefix, count);
    if(g_debug)
        printf("Write entry %d to %s\n", count, filename);

    FILE *fd = fopen(filename, "wb");
    free(filename);

    if(fd == NULL)
        return ;
    elf_write_file(elf, elf_write, elf_printf, fd);
    fclose(fd);
}

static int do_nanostage_image(uint8_t *buf, unsigned long size)
{
    if(size < sizeof(struct rknano_stage_section_t))
        return 1;
    struct rknano_stage_header_t *hdr = (void *)buf;

    cprintf(BLUE, "Header\n");
    cprintf(GREEN, "  Base Address: ");
    cprintf(YELLOW, "%#08x\n", hdr->addr);
    cprintf(GREEN, "  Load count: ");
    cprintf(YELLOW, "%d\n", hdr->count);
    
    struct rknano_stage_section_t *sec = (void *)(hdr + 1);

    for(unsigned i = 0; i < hdr->count; i++, sec++)
    {
        cprintf(BLUE, "Section %d\n", i);
        cprintf(GREEN, "  Code: ");
        cprintf(YELLOW, "0x%08x", sec->code_pa);
        cprintf(RED, "-(txt)-");
        cprintf(YELLOW, "0x%08x", sec->code_pa + sec->code_sz);
        cprintf(BLUE, " |--> ");
        cprintf(YELLOW, "0x%08x", sec->code_va);
        cprintf(RED, "-(txt)-");
        cprintf(YELLOW, "0x%08x\n", sec->code_va + sec->code_sz);

        cprintf(GREEN, "  Data: ");
        cprintf(YELLOW, "0x%08x", sec->data_pa);
        cprintf(RED, "-(dat)-");
        cprintf(YELLOW, "0x%08x", sec->data_pa + sec->data_sz);
        cprintf(BLUE, " |--> ");
        cprintf(YELLOW, "0x%08x", sec->data_va);
        cprintf(RED, "-(dat)-");
        cprintf(YELLOW, "0x%08x\n", sec->data_va + sec->data_sz);

        cprintf(GREEN, "  Data: ");
        cprintf(RED, "                           ");
        cprintf(BLUE, " |--> ");
        cprintf(YELLOW, "0x%08x", sec->bss_va);
        cprintf(RED, "-(bss)-");
        cprintf(YELLOW, "0x%08x\n", sec->bss_va + sec->bss_sz);

#if 0
        struct rknano_blob_t blob;
        blob.offset = sec->code_pa - hdr->addr;
        blob.size = sec->code_sz;
        save_blob(&blob, buf, size, "entry.", i, NO_ENC);
#else
        struct elf_params_t elf;
        elf_init(&elf);
        elf_add_load_section(&elf, sec->code_va, sec->code_sz, buf + sec->code_pa - hdr->addr);
        elf_add_load_section(&elf, sec->data_va, sec->data_sz, buf + sec->data_pa - hdr->addr);
        elf_add_fill_section(&elf, sec->bss_va, sec->bss_sz, 0);
        extract_elf_section(&elf, i);
        elf_release(&elf);
#endif
    }

    return 0;
}

#define MAGIC_BOOT      "BOOT"
#define MAGIC_BOOT_SIZE 4

struct rknano_boot_desc_t
{
    uint8_t count;
    uint32_t offset;
    uint8_t stride;
} __attribute__((packed));

struct rknano_boot_header_t
{
    char magic[MAGIC_BOOT_SIZE];
    uint16_t hdr_size;
    uint32_t version;
    uint32_t unk;
    uint16_t year;
    uint8_t month;
    uint8_t day;
    uint8_t hour;
    uint8_t minute;
    uint8_t second;
    uint32_t chip;
    struct rknano_boot_desc_t desc_1;
    struct rknano_boot_desc_t desc_2;
    struct rknano_boot_desc_t desc_4;
    uint8_t field_2B[9];
    uint32_t field_34;
} __attribute__((packed));

struct rknano_boot_entry_t
{
    uint8_t entry_size; // unsure
    uint32_t unk;
    uint16_t name[20];
    uint32_t offset;
    uint32_t size;
    uint32_t sthg2;
} __attribute__((packed));

uint32_t boot_crc_table[256] =
{
    0x00000000, 0x04C10DB7, 0x09821B6E, 0x0D4316D9,
    0x130436DC, 0x17C53B6B, 0x1A862DB2, 0x1E472005,
    0x26086DB8, 0x22C9600F, 0x2F8A76D6, 0x2B4B7B61,
    0x350C5B64, 0x31CD56D3, 0x3C8E400A, 0x384F4DBD,
    0x4C10DB70, 0x48D1D6C7, 0x4592C01E, 0x4153CDA9,
    0x5F14EDAC, 0x5BD5E01B, 0x5696F6C2, 0x5257FB75,
    0x6A18B6C8, 0x6ED9BB7F, 0x639AADA6, 0x675BA011,
    0x791C8014, 0x7DDD8DA3, 0x709E9B7A, 0x745F96CD,
    0x9821B6E0, 0x9CE0BB57, 0x91A3AD8E, 0x9562A039,
    0x8B25803C, 0x8FE48D8B, 0x82A79B52, 0x866696E5,
    0xBE29DB58, 0xBAE8D6EF, 0xB7ABC036, 0xB36ACD81,
    0xAD2DED84, 0xA9ECE033, 0xA4AFF6EA, 0xA06EFB5D,
    0xD4316D90, 0xD0F06027, 0xDDB376FE, 0xD9727B49,
    0xC7355B4C, 0xC3F456FB, 0xCEB74022, 0xCA764D95,
    0xF2390028, 0xF6F80D9F, 0xFBBB1B46, 0xFF7A16F1,
    0xE13D36F4, 0xE5FC3B43, 0xE8BF2D9A, 0xEC7E202D,
    0x34826077, 0x30436DC0, 0x3D007B19, 0x39C176AE,
    0x278656AB, 0x23475B1C, 0x2E044DC5, 0x2AC54072,
    0x128A0DCF, 0x164B0078, 0x1B0816A1, 0x1FC91B16,
    0x018E3B13, 0x054F36A4, 0x080C207D, 0x0CCD2DCA,
    0x7892BB07, 0x7C53B6B0, 0x7110A069, 0x75D1ADDE,
    0x6B968DDB, 0x6F57806C, 0x621496B5, 0x66D59B02,
    0x5E9AD6BF, 0x5A5BDB08, 0x5718CDD1, 0x53D9C066,
    0x4D9EE063, 0x495FEDD4, 0x441CFB0D, 0x40DDF6BA,
    0xACA3D697, 0xA862DB20, 0xA521CDF9, 0xA1E0C04E,
    0xBFA7E04B, 0xBB66EDFC, 0xB625FB25, 0xB2E4F692,
    0x8AABBB2F, 0x8E6AB698, 0x8329A041, 0x87E8ADF6,
    0x99AF8DF3, 0x9D6E8044, 0x902D969D, 0x94EC9B2A,
    0xE0B30DE7, 0xE4720050, 0xE9311689, 0xEDF01B3E,
    0xF3B73B3B, 0xF776368C, 0xFA352055, 0xFEF42DE2,
    0xC6BB605F, 0xC27A6DE8, 0xCF397B31, 0xCBF87686,
    0xD5BF5683, 0xD17E5B34, 0xDC3D4DED, 0xD8FC405A,
    0x6904C0EE, 0x6DC5CD59, 0x6086DB80, 0x6447D637,
    0x7A00F632, 0x7EC1FB85, 0x7382ED5C, 0x7743E0EB,
    0x4F0CAD56, 0x4BCDA0E1, 0x468EB638, 0x424FBB8F,
    0x5C089B8A, 0x58C9963D, 0x558A80E4, 0x514B8D53,
    0x25141B9E, 0x21D51629, 0x2C9600F0, 0x28570D47,
    0x36102D42, 0x32D120F5, 0x3F92362C, 0x3B533B9B,
    0x031C7626, 0x07DD7B91, 0x0A9E6D48, 0x0E5F60FF,
    0x101840FA, 0x14D94D4D, 0x199A5B94, 0x1D5B5623,
    0xF125760E, 0xF5E47BB9, 0xF8A76D60, 0xFC6660D7,
    0xE22140D2, 0xE6E04D65, 0xEBA35BBC, 0xEF62560B,
    0xD72D1BB6, 0xD3EC1601, 0xDEAF00D8, 0xDA6E0D6F,
    0xC4292D6A, 0xC0E820DD, 0xCDAB3604, 0xC96A3BB3,
    0xBD35AD7E, 0xB9F4A0C9, 0xB4B7B610, 0xB076BBA7,
    0xAE319BA2, 0xAAF09615, 0xA7B380CC, 0xA3728D7B,
    0x9B3DC0C6, 0x9FFCCD71, 0x92BFDBA8, 0x967ED61F,
    0x8839F61A, 0x8CF8FBAD, 0x81BBED74, 0x857AE0C3,
    0x5D86A099, 0x5947AD2E, 0x5404BBF7, 0x50C5B640,
    0x4E829645, 0x4A439BF2, 0x47008D2B, 0x43C1809C,
    0x7B8ECD21, 0x7F4FC096, 0x720CD64F, 0x76CDDBF8,
    0x688AFBFD, 0x6C4BF64A, 0x6108E093, 0x65C9ED24,
    0x11967BE9, 0x1557765E, 0x18146087, 0x1CD56D30,
    0x02924D35, 0x06534082, 0x0B10565B, 0x0FD15BEC,
    0x379E1651, 0x335F1BE6, 0x3E1C0D3F, 0x3ADD0088,
    0x249A208D, 0x205B2D3A, 0x2D183BE3, 0x29D93654,
    0xC5A71679, 0xC1661BCE, 0xCC250D17, 0xC8E400A0,
    0xD6A320A5, 0xD2622D12, 0xDF213BCB, 0xDBE0367C,
    0xE3AF7BC1, 0xE76E7676, 0xEA2D60AF, 0xEEEC6D18,
    0xF0AB4D1D, 0xF46A40AA, 0xF9295673, 0xFDE85BC4,
    0x89B7CD09, 0x8D76C0BE, 0x8035D667, 0x84F4DBD0,
    0x9AB3FBD5, 0x9E72F662, 0x9331E0BB, 0x97F0ED0C,
    0xAFBFA0B1, 0xAB7EAD06, 0xA63DBBDF, 0xA2FCB668,
    0xBCBB966D, 0xB87A9BDA, 0xB5398D03, 0xB1F880B4,
};

static uint32_t boot_crc(uint8_t *buf, int size)
{
    uint32_t crc = 0;
    for(int i = 0; i < size; i++)
        crc = boot_crc_table[buf[i] ^ (crc >> 24)] ^ (crc << 8);
    return crc;
}

wchar_t *from_uni16(uint16_t *str)
{
    static wchar_t buffer[64];
    int i = 0;
    while(str[i])
    {
        buffer[i] = str[i];
        i++;
    }
    return buffer;
}

static int do_boot_desc(uint8_t *buf, unsigned long size,
    struct rknano_boot_desc_t *desc, int desc_idx)
{
    (void) buf;
    (void) size;
    cprintf(BLUE, "Desc %d\n", desc_idx);
    cprintf(GREEN, "  Count: "); cprintf(YELLOW, "%d\n", desc->count);
    cprintf(GREEN, "  Offset: "); cprintf(YELLOW, "%#x\n", desc->offset);
    cprintf(GREEN, "  Stride: "); cprintf(YELLOW, "%#x ", desc->stride);
    if(desc->stride < sizeof(struct rknano_boot_entry_t))
        cprintf(RED, "(too small <%#lx)\n", sizeof(struct rknano_boot_entry_t));
    else
        cprintf(RED, "(OK >=%#lx)\n", sizeof(struct rknano_boot_entry_t));

    for(int i = 0; i < desc->count; i++)
    {
        struct rknano_boot_entry_t *entry = (void *)(buf + desc->offset + i * desc->stride);
        cprintf(BLUE, "  Entry %d\n", i);
        cprintf(GREEN, "    Entry size: "); cprintf(YELLOW, "%#x ", entry->entry_size);
        if(desc->stride < sizeof(struct rknano_boot_entry_t))
            cprintf(RED, "(too small <%#lx)\n", sizeof(struct rknano_boot_entry_t));
        else
            cprintf(RED, "(OK >=%#lx)\n", sizeof(struct rknano_boot_entry_t));
        cprintf(GREEN, "    Unk: "); cprintf(YELLOW, "%#x\n", entry->unk);
        cprintf(GREEN, "    Name: "); cprintf(YELLOW, "%S\n", from_uni16(entry->name));
        cprintf(GREEN, "    Offset: "); cprintf(YELLOW, "%#x\n", entry->offset);
        cprintf(GREEN, "    Size: "); cprintf(YELLOW, "%#x\n", entry->size);
        cprintf(GREEN, "    Sthg 2: "); cprintf(YELLOW, "%#x\n", entry->sthg2);

        struct rknano_blob_t blob;
        blob.offset = entry->offset;
        blob.size = entry->size;
        char name[128];
        sprintf(name, "%d.%S", desc_idx, from_uni16(entry->name));
        save_blob(&blob, buf, size, name, -1, PAGE_ENC);
    }

    return 0;
}

static int do_boot_image(uint8_t *buf, unsigned long size)
{
    if(size < sizeof(struct rknano_boot_header_t))
        return 1;
    struct rknano_boot_header_t *hdr = (void *)buf;
    if(strncmp(hdr->magic, MAGIC_BOOT, MAGIC_BOOT_SIZE))
        return 1;

    cprintf(BLUE, "Header\n");
    cprintf(GREEN, "  Magic: ");
    cprintf(YELLOW, "%." STR(MAGIC_BOOT_SIZE) "s  ", hdr->magic);
    if(strncmp(hdr->magic, MAGIC_BOOT, MAGIC_BOOT_SIZE) == 0)
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");

    cprintf(GREEN, "  Header Size: ");
    cprintf(YELLOW, "%#x ", hdr->hdr_size);
    if(hdr->hdr_size >= sizeof(struct rknano_boot_header_t))
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");
    
#define print(str, name) cprintf(GREEN, "  "str": ");cprintf(YELLOW, "%#x\n", (unsigned)hdr->name)
#define print_arr(str, name, sz) \
    cprintf(GREEN, "  "str":");for(int i = 0; i < sz; i++)cprintf(YELLOW, " %#x", (unsigned)hdr->name[i]);printf("\n")

    cprintf(GREEN, "  Version: ");
    cprintf(YELLOW, "%x.%x.%x\n", (hdr->version >> 24) & 0xff,
        (hdr->version >> 16) & 0xff, hdr->version & 0xffff);

    cprintf(GREEN, "  Date: ");
    cprintf(YELLOW, "%d/%d/%d %02d:%02d:%02d\n", hdr->day, hdr->month, hdr->year,
        hdr->hour, hdr->minute, hdr->second);

    cprintf(GREEN, "  Chip: ");
    cprintf(YELLOW, "%#x\n", hdr->chip);
    
    print_arr("field_2A", field_2B, 9);
    print("field_34", field_34);

    do_boot_desc(buf, size, &hdr->desc_1, 1);
    do_boot_desc(buf, size, &hdr->desc_2, 2);
    do_boot_desc(buf, size, &hdr->desc_4, 4);

    cprintf(BLUE, "Variable Header:\n");
    cprintf(GREEN, "  Value: ");
    cprintf(YELLOW, "%#lx\n", *(unsigned long *)((uint8_t *)hdr + hdr->field_34 - 10));

    /* The last 4 bytes are a 32-bit CRC */
    cprintf(BLUE, "Post Header:\n");
    cprintf(GREEN, "  CRC: ");
    uint32_t crc = *(uint32_t *)(buf + size - 4);
    uint32_t ccrc = boot_crc(buf, size - 4);
    cprintf(YELLOW, "%08x ", crc);
    if(crc == ccrc)
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");
    
    return 0;
}

typedef struct rknano_blob_t rkfw_blob_t;

#define MAGIC_RKFW      "RKFW"
#define MAGIC_RKFW_SIZE 4

struct rkfw_header_t
{
    char magic[MAGIC_RKFW_SIZE];
    uint16_t hdr_size; // UNSURE
    uint32_t version;
    uint32_t code;
    uint16_t year;
    uint8_t month;
    uint8_t day;
    uint8_t hour;
    uint8_t minute;
    uint8_t second;
    uint32_t chip;
    rkfw_blob_t loader;
    rkfw_blob_t update;
    uint8_t pad[61];
} __attribute__((packed));

static int do_rkfw_image(uint8_t *buf, unsigned long size)
{
    if(size < sizeof(struct rkfw_header_t))
        return 1;
    struct rkfw_header_t *hdr = (void *)buf;
    if(strncmp(hdr->magic, MAGIC_RKFW, MAGIC_RKFW_SIZE))
        return 1;

    cprintf(BLUE, "Header\n");
    cprintf(GREEN, "  Magic: ");
    cprintf(YELLOW, "%." STR(MAGIC_RKFW_SIZE) "s  ", hdr->magic);
    if(strncmp(hdr->magic, MAGIC_RKFW, MAGIC_RKFW_SIZE) == 0)
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");

    cprintf(GREEN, "  Header size: ");
    cprintf(YELLOW, " %#x ", hdr->hdr_size);
    if(hdr->hdr_size == sizeof(struct rkfw_header_t))
        cprintf(RED, "OK\n");
    else
        cprintf(RED, "Mismatch\n");
    cprintf(GREEN, "  Version: ");
    cprintf(YELLOW, "%x.%x.%x\n", (hdr->version >> 24) & 0xff,
        (hdr->version >> 16) & 0xff, hdr->version & 0xffff);

    cprintf(GREEN, "  Code: ");
    cprintf(YELLOW, "%#x\n", hdr->code);

    cprintf(GREEN, "  Date: ");
    cprintf(YELLOW, "%d/%d/%d %02d:%02d:%02d\n", hdr->day, hdr->month, hdr->year,
        hdr->hour, hdr->minute, hdr->second);

    cprintf(GREEN, "  Chip: ");
    cprintf(YELLOW, "%#x\n", hdr->chip);
    
    cprintf(GREEN, "  Loader: ");
    print_blob_interval(&hdr->loader);
    cprintf(OFF, "\n");
    save_blob(&hdr->loader, buf, size, "loader", 0, NO_ENC);

    cprintf(GREEN, "  Update: ");
    print_blob_interval(&hdr->update);
    cprintf(OFF, "\n");
    save_blob(&hdr->update, buf, size, "update", 0, NO_ENC);

    print_arr("pad", pad, 61);

    return 0;
}

static int do_rkencode_image(uint8_t *buf, unsigned long size, int enc_mode)
{
    void *ptr = malloc(size);
    int len = size;
    uint8_t *buff_ptr = buf;
    uint8_t *out_ptr = ptr;
    if(enc_mode == PAGE_ENC)
    {
        while(len >= 0x200)
        {
            encode_page(buff_ptr, out_ptr, 0x200);
            buff_ptr += 0x200;
            out_ptr += 0x200;
            len -= 0x200;
        }
    }
    encode_page(buff_ptr, out_ptr, len);

    if(g_out_prefix)
    {
        FILE *f = fopen(g_out_prefix, "wb");
        if(f)
        {
            fwrite(out_ptr, 1, size, f);
            fclose(f);
        }
        else
            printf("Cannot open output file: %m\n");
    }
    free(ptr);

    return 0;
}

static void usage(void)
{
    printf("Usage: rkboottool [options] rknanoboot.bin\n");
    printf("Options:\n");
    printf("  --rkfw\tUnpack a rkfw file\n");
    printf("  --rknanofw\tUnpack a regular RknanoFW file\n");
    printf("  --rkboot\tUnpack a BOOT file\n");
    printf("  --rknanostage\tUnpack a RknanoFW stage file\n");
    printf("  --rkencode\tEncode a raw file in page mode\n");
    printf("  --rkencode2\tEncode a raw file in continuous mode\n");
    printf("  -o <prefix>\tSet output prefix\n");
    printf("The default is to try to guess the format.\n");
    printf("If several formats are specified, all are tried.\n");
    exit(1);
}

int main(int argc, char **argv)
{
    bool try_nanofw = false;
    bool try_rkfw = false;
    bool try_boot = false;
    bool try_nanostage = false;
    bool try_rkencode = false;
    bool try_rkencode2 = false;

    while(1)
    {
        static struct option long_options[] =
        {
            {"help", no_argument, 0, '?'},
            {"debug", no_argument, 0, 'd'},
            {"rkfw", no_argument, 0, '9'},
            {"rknanofw", no_argument, 0, 'n'},
            {"rknanostage", no_argument, 0, 's'},
            {"rkencode", no_argument, 0, 'e'},
            {"rkencode2", no_argument, 0, 'E'},
            {"rkboot", no_argument, 0, 'b'},
            {"no-color", no_argument, 0, 'c'},
            {0, 0, 0, 0}
        };

        int c = getopt_long(argc, argv, "?d9nscbeEo:", long_options, NULL);
        if(c == -1)
            break;
        switch(c)
        {
            case -1:
                break;
            case 'c':
                enable_color(false);
                break;
            case 'b':
                try_boot = true;
                break;
            case 'n':
                try_nanofw = true;
                break;
            case 'd':
                g_debug = true;
                break;
            case '?':
                usage();
                break;
            case 'o':
                g_out_prefix = optarg;
                break;
            case '9':
                try_rkfw = true;
                break;
            case 's':
                try_nanostage = true;
                break;
            case 'e':
                try_rkencode = true;
                break;
            case 'E':
                try_rkencode2 = true;
                break;
            default:
                printf("Invalid argument '%c'\n", c);
                abort();
        }
    }

    if(argc - optind != 1)
    {
        usage();
        return 1;
    }

    if(!try_nanostage && !try_rkfw && !try_nanofw && !try_boot && !try_rkencode && !try_rkencode2)
        try_nanostage = try_rkfw = try_nanofw = try_boot = true;

    FILE *fin = fopen(argv[optind], "r");
    if(fin == NULL)
    {
        perror("Cannot open boot file");
        return 1;
    }
    fseek(fin, 0, SEEK_END);
    long size = ftell(fin);
    fseek(fin, 0, SEEK_SET);

    void *buf = malloc(size);
    if(buf == NULL)
    {
        perror("Cannot allocate memory");
        return 1;
    }

    if(fread(buf, size, 1, fin) != 1)
    {
        perror("Cannot read file");
        return 1;
    }
    
    fclose(fin);

    if(try_nanofw && !do_nanofw_image(buf, size))
        goto Lsuccess;
    if(try_rkfw && !do_rkfw_image(buf, size))
        goto Lsuccess;
    if(try_boot && !do_boot_image(buf, size))
        goto Lsuccess;
    if(try_nanostage && !do_nanostage_image(buf, size))
        goto Lsuccess;
    if(try_rkencode && !do_rkencode_image(buf, size, PAGE_ENC))
        goto Lsuccess;
    if(try_rkencode2 && !do_rkencode_image(buf, size, CONTINOUS_ENC))
        goto Lsuccess;
    cprintf(GREY, "No valid format found!\n");
    Lsuccess:
    free(buf);

    return 0;
}