summaryrefslogtreecommitdiff
path: root/util/ifdtool/ifdtool.c
blob: c4785504d52832dec57d2563d20759153d1347e7 (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
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
/*
 * ifdtool - dump Intel Firmware Descriptor information
 *
 * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
 */

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "ifdtool.h"

#define NUM_REGIONS 5

static const struct region_name region_names[NUM_REGIONS] = {
	{ "Flash Descriptor", "fd" },
	{ "BIOS", "bios" },
	{ "Intel ME", "me" },
	{ "GbE", "gbe" },
	{ "Platform Data", "pd" }
};

static fdbar_t *find_fd(char *image, int size)
{
	int i, found = 0;

	/* Scan for FD signature */
	for (i = 0; i < (size - 4); i += 4) {
		if (*(uint32_t *) (image + i) == 0x0FF0A55A) {
			found = 1;
			break;	// signature found.
		}
	}

	if (!found) {
		printf("No Flash Descriptor found in this image\n");
		return NULL;
	}

	printf("Found Flash Descriptor signature at 0x%08x\n", i);

	return (fdbar_t *) (image + i);
}

static region_t get_region(frba_t *frba, int region_type)
{
	region_t region;
	region.base = 0, region.limit = 0, region.size = 0;

	switch (region_type) {
	case 0:
		region.base = (frba->flreg0 & 0x00000fff) << 12;
		region.limit = ((frba->flreg0 & 0x0fff0000) >> 4) | 0xfff;
		break;
	case 1:
		region.base = (frba->flreg1 & 0x00000fff) << 12;
		region.limit = ((frba->flreg1 & 0x0fff0000) >> 4) | 0xfff;
		break;
	case 2:
		region.base = (frba->flreg2 & 0x00000fff) << 12;
		region.limit = ((frba->flreg2 & 0x0fff0000) >> 4) | 0xfff;
		break;
	case 3:
		region.base = (frba->flreg3 & 0x00000fff) << 12;
		region.limit = ((frba->flreg3 & 0x0fff0000) >> 4) | 0xfff;
		break;
	case 4:
		region.base = (frba->flreg4 & 0x00000fff) << 12;
		region.limit = ((frba->flreg4 & 0x0fff0000) >> 4) | 0xfff;
		break;
	default:
		fprintf(stderr, "Invalid region type.\n");
		exit (EXIT_FAILURE);
	}

	region.size = region.limit - region.base + 1;
	if (region.size < 0)
		region.size = 0;

	return region;
}

static void set_region(frba_t *frba, int region_type, region_t region)
{
	switch (region_type) {
	case 0:
		frba->flreg0 = (((region.limit >> 12) & 0x7fff) << 16)
			| ((region.base >> 12) & 0x7fff);
		break;
	case 1:
		frba->flreg1 = (((region.limit >> 12) & 0x7fff) << 16)
			| ((region.base >> 12) & 0x7fff);
		break;
	case 2:
		frba->flreg2 = (((region.limit >> 12) & 0x7fff) << 16)
			| ((region.base >> 12) & 0x7fff);
		break;
	case 3:
		frba->flreg3 = (((region.limit >> 12) & 0x7fff) << 16)
			| ((region.base >> 12) & 0x7fff);
		break;
	case 4:
		frba->flreg4 = (((region.limit >> 12) & 0x7fff) << 16)
			| ((region.base >> 12) & 0x7fff);
		break;
	default:
		fprintf(stderr, "Invalid region type.\n");
		exit (EXIT_FAILURE);
	}
}

static const char *region_name(int region_type)
{
	if (region_type < 0 || region_type >= NUM_REGIONS) {
		fprintf(stderr, "Invalid region type.\n");
		exit (EXIT_FAILURE);
	}

	return region_names[region_type].pretty;
}

static const char *region_name_short(int region_type)
{
	if (region_type < 0 || region_type >= NUM_REGIONS) {
		fprintf(stderr, "Invalid region type.\n");
		exit (EXIT_FAILURE);
	}

	return region_names[region_type].terse;
}

static int region_num(const char *name)
{
	int i;

	for (i = 0; i < NUM_REGIONS; i++) {
		if (strcasecmp(name, region_names[i].pretty) == 0)
			return i;
		if (strcasecmp(name, region_names[i].terse) == 0)
			return i;
	}

	return -1;
}

static const char *region_filename(int region_type)
{
	static const char *region_filenames[NUM_REGIONS] = {
		"flashregion_0_flashdescriptor.bin",
		"flashregion_1_bios.bin",
		"flashregion_2_intel_me.bin",
		"flashregion_3_gbe.bin",
		"flashregion_4_platform_data.bin"
	};

	if (region_type < 0 || region_type >= NUM_REGIONS) {
		fprintf(stderr, "Invalid region type.\n");
		exit (EXIT_FAILURE);
	}

	return region_filenames[region_type];
}

static void dump_region(int num, frba_t *frba)
{
	region_t region = get_region(frba, num);
	printf("  Flash Region %d (%s): %08x - %08x %s\n",
		       num, region_name(num), region.base, region.limit,
		       region.size < 1 ? "(unused)" : "");
}

static void dump_region_layout(char *buf, size_t bufsize, int num, frba_t *frba)
{
	region_t region = get_region(frba, num);
	snprintf(buf, bufsize, "%08x:%08x %s\n",
		region.base, region.limit, region_name_short(num));
}

static void dump_frba(frba_t * frba)
{
	printf("Found Region Section\n");
	printf("FLREG0:    0x%08x\n", frba->flreg0);
	dump_region(0, frba);
	printf("FLREG1:    0x%08x\n", frba->flreg1);
	dump_region(1, frba);
	printf("FLREG2:    0x%08x\n", frba->flreg2);
	dump_region(2, frba);
	printf("FLREG3:    0x%08x\n", frba->flreg3);
	dump_region(3, frba);
	printf("FLREG4:    0x%08x\n", frba->flreg4);
	dump_region(4, frba);
}

static void dump_frba_layout(frba_t * frba, char *layout_fname)
{
	char buf[LAYOUT_LINELEN];
	size_t bufsize = LAYOUT_LINELEN;
	int i;

	int layout_fd = open(layout_fname, O_WRONLY | O_CREAT | O_TRUNC,
			S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
	if (layout_fd == -1) {
		perror("Could not open file");
		exit(EXIT_FAILURE);
	}

	for (i = 0; i < NUM_REGIONS; i++) {
		dump_region_layout(buf, bufsize, i, frba);
		if (write(layout_fd, buf, strlen(buf)) < 0) {
			perror("Could not write to file");
			exit(EXIT_FAILURE);
		}
	}
	close(layout_fd);
	printf("Wrote layout to %s\n", layout_fname);
}

static void decode_spi_frequency(unsigned int freq)
{
	switch (freq) {
	case SPI_FREQUENCY_20MHZ:
		printf("20MHz");
		break;
	case SPI_FREQUENCY_33MHZ:
		printf("33MHz");
		break;
	case SPI_FREQUENCY_50MHZ:
		printf("50MHz");
		break;
	default:
		printf("unknown<%x>MHz", freq);
	}
}

static void decode_component_density(unsigned int density)
{
	switch (density) {
	case COMPONENT_DENSITY_512KB:
		printf("512KB");
		break;
	case COMPONENT_DENSITY_1MB:
		printf("1MB");
		break;
	case COMPONENT_DENSITY_2MB:
		printf("2MB");
		break;
	case COMPONENT_DENSITY_4MB:
		printf("4MB");
		break;
	case COMPONENT_DENSITY_8MB:
		printf("8MB");
		break;
	case COMPONENT_DENSITY_16MB:
		printf("16MB");
		break;
	default:
		printf("unknown<%x>MB", density);
	}
}

static void dump_fcba(fcba_t * fcba)
{
	printf("\nFound Component Section\n");
	printf("FLCOMP     0x%08x\n", fcba->flcomp);
	printf("  Dual Output Fast Read Support:       %ssupported\n",
		(fcba->flcomp & (1 << 30))?"":"not ");
	printf("  Read ID/Read Status Clock Frequency: ");
	decode_spi_frequency((fcba->flcomp >> 27) & 7);
	printf("\n  Write/Erase Clock Frequency:         ");
	decode_spi_frequency((fcba->flcomp >> 24) & 7);
	printf("\n  Fast Read Clock Frequency:           ");
	decode_spi_frequency((fcba->flcomp >> 21) & 7);
	printf("\n  Fast Read Support:                   %ssupported",
		(fcba->flcomp & (1 << 20))?"":"not ");
	printf("\n  Read Clock Frequency:                ");
	decode_spi_frequency((fcba->flcomp >> 17) & 7);
	printf("\n  Component 2 Density:                 ");
	decode_component_density((fcba->flcomp >> 3) & 7);
	printf("\n  Component 1 Density:                 ");
	decode_component_density(fcba->flcomp & 7);
	printf("\n");
	printf("FLILL      0x%08x\n", fcba->flill);
	printf("  Invalid Instruction 3: 0x%02x\n",
		(fcba->flill >> 24) & 0xff);
	printf("  Invalid Instruction 2: 0x%02x\n",
		(fcba->flill >> 16) & 0xff);
	printf("  Invalid Instruction 1: 0x%02x\n",
		(fcba->flill >> 8) & 0xff);
	printf("  Invalid Instruction 0: 0x%02x\n",
		fcba->flill & 0xff);
	printf("FLPB       0x%08x\n", fcba->flpb);
	printf("  Flash Partition Boundary Address: 0x%06x\n\n",
		(fcba->flpb & 0xfff) << 12);
}

static void dump_fpsba(fpsba_t * fpsba)
{
	printf("Found PCH Strap Section\n");
	printf("PCHSTRP0:  0x%08x\n", fpsba->pchstrp0);
	printf("PCHSTRP1:  0x%08x\n", fpsba->pchstrp1);
	printf("PCHSTRP2:  0x%08x\n", fpsba->pchstrp2);
	printf("PCHSTRP3:  0x%08x\n", fpsba->pchstrp3);
	printf("PCHSTRP4:  0x%08x\n", fpsba->pchstrp4);
	printf("PCHSTRP5:  0x%08x\n", fpsba->pchstrp5);
	printf("PCHSTRP6:  0x%08x\n", fpsba->pchstrp6);
	printf("PCHSTRP7:  0x%08x\n", fpsba->pchstrp7);
	printf("PCHSTRP8:  0x%08x\n", fpsba->pchstrp8);
	printf("PCHSTRP9:  0x%08x\n", fpsba->pchstrp9);
	printf("PCHSTRP10: 0x%08x\n", fpsba->pchstrp10);
	printf("PCHSTRP11: 0x%08x\n", fpsba->pchstrp11);
	printf("PCHSTRP12: 0x%08x\n", fpsba->pchstrp12);
	printf("PCHSTRP13: 0x%08x\n", fpsba->pchstrp13);
	printf("PCHSTRP14: 0x%08x\n", fpsba->pchstrp14);
	printf("PCHSTRP15: 0x%08x\n", fpsba->pchstrp15);
	printf("PCHSTRP16: 0x%08x\n", fpsba->pchstrp16);
	printf("PCHSTRP17: 0x%08x\n\n", fpsba->pchstrp17);
}

static void decode_flmstr(uint32_t flmstr)
{
	printf("  Platform Data Region Write Access: %s\n",
		(flmstr & (1 << 28)) ? "enabled" : "disabled");
	printf("  GbE Region Write Access:           %s\n",
		(flmstr & (1 << 27)) ? "enabled" : "disabled");
	printf("  Intel ME Region Write Access:      %s\n",
		(flmstr & (1 << 26)) ? "enabled" : "disabled");
	printf("  Host CPU/BIOS Region Write Access: %s\n",
		(flmstr & (1 << 25)) ? "enabled" : "disabled");
	printf("  Flash Descriptor Write Access:     %s\n",
		(flmstr & (1 << 24)) ? "enabled" : "disabled");

	printf("  Platform Data Region Read Access:  %s\n",
		(flmstr & (1 << 20)) ? "enabled" : "disabled");
	printf("  GbE Region Read Access:            %s\n",
		(flmstr & (1 << 19)) ? "enabled" : "disabled");
	printf("  Intel ME Region Read Access:       %s\n",
		(flmstr & (1 << 18)) ? "enabled" : "disabled");
	printf("  Host CPU/BIOS Region Read Access:  %s\n",
		(flmstr & (1 << 17)) ? "enabled" : "disabled");
	printf("  Flash Descriptor Read Access:      %s\n",
		(flmstr & (1 << 16)) ? "enabled" : "disabled");

	printf("  Requester ID:                      0x%04x\n\n",
		flmstr & 0xffff);
}

static void dump_fmba(fmba_t * fmba)
{
	printf("Found Master Section\n");
	printf("FLMSTR1:   0x%08x (Host CPU/BIOS)\n", fmba->flmstr1);
	decode_flmstr(fmba->flmstr1);
	printf("FLMSTR2:   0x%08x (Intel ME)\n", fmba->flmstr2);
	decode_flmstr(fmba->flmstr2);
	printf("FLMSTR3:   0x%08x (GbE)\n", fmba->flmstr3);
	decode_flmstr(fmba->flmstr3);
}

static void dump_fmsba(fmsba_t * fmsba)
{
	printf("Found Processor Strap Section\n");
	printf("????:      0x%08x\n", fmsba->data[0]);
	printf("????:      0x%08x\n", fmsba->data[1]);
	printf("????:      0x%08x\n", fmsba->data[2]);
	printf("????:      0x%08x\n", fmsba->data[3]);
}

static void dump_jid(uint32_t jid)
{
	printf("    SPI Componend Device ID 1:          0x%02x\n",
		(jid >> 16) & 0xff);
	printf("    SPI Componend Device ID 0:          0x%02x\n",
		(jid >> 8) & 0xff);
	printf("    SPI Componend Vendor ID:            0x%02x\n",
		jid & 0xff);
}

static void dump_vscc(uint32_t vscc)
{
	printf("    Lower Erase Opcode:                 0x%02x\n",
		vscc >> 24);
	printf("    Lower Write Enable on Write Status: 0x%02x\n",
		vscc & (1 << 20) ? 0x06 : 0x50);
	printf("    Lower Write Status Required:        %s\n",
		vscc & (1 << 19) ? "Yes" : "No");
	printf("    Lower Write Granularity:            %d bytes\n",
		vscc & (1 << 18) ? 64 : 1);
	printf("    Lower Block / Sector Erase Size:    ");
	switch ((vscc >> 16) & 0x3) {
	case 0:
		printf("256 Byte\n");
		break;
	case 1:
		printf("4KB\n");
		break;
	case 2:
		printf("8KB\n");
		break;
	case 3:
		printf("64KB\n");
		break;
	}

	printf("    Upper Erase Opcode:                 0x%02x\n",
		(vscc >> 8) & 0xff);
	printf("    Upper Write Enable on Write Status: 0x%02x\n",
		vscc & (1 << 4) ? 0x06 : 0x50);
	printf("    Upper Write Status Required:        %s\n",
		vscc & (1 << 3) ? "Yes" : "No");
	printf("    Upper Write Granularity:            %d bytes\n",
		vscc & (1 << 2) ? 64 : 1);
	printf("    Upper Block / Sector Erase Size:    ");
	switch (vscc & 0x3) {
	case 0:
		printf("256 Byte\n");
		break;
	case 1:
		printf("4KB\n");
		break;
	case 2:
		printf("8KB\n");
		break;
	case 3:
		printf("64KB\n");
		break;
	}
}

static void dump_vtba(vtba_t *vtba, int vtl)
{
	int i;
	int num = (vtl >> 1) < 8 ? (vtl >> 1) : 8;

	printf("ME VSCC table:\n");
	for (i = 0; i < num; i++) {
		printf("  JID%d:  0x%08x\n", i, vtba->entry[i].jid);
		dump_jid(vtba->entry[i].jid);
		printf("  VSCC%d: 0x%08x\n", i, vtba->entry[i].vscc);
		dump_vscc(vtba->entry[i].vscc);
	}
	printf("\n");
}

static void dump_oem(uint8_t *oem)
{
	int i, j;
	printf("OEM Section:\n");
	for (i = 0; i < 4; i++) {
		printf("%02x:", i << 4);
		for (j = 0; j < 16; j++)
			printf(" %02x", oem[(i<<4)+j]);
		printf ("\n");
	}
	printf ("\n");
}

static void dump_fd(char *image, int size)
{
	fdbar_t *fdb = find_fd(image, size);
	if (!fdb)
		exit(EXIT_FAILURE);

	printf("FLMAP0:    0x%08x\n", fdb->flmap0);
	printf("  NR:      %d\n", (fdb->flmap0 >> 24) & 7);
	printf("  FRBA:    0x%x\n", ((fdb->flmap0 >> 16) & 0xff) << 4);
	printf("  NC:      %d\n", ((fdb->flmap0 >> 8) & 3) + 1);
	printf("  FCBA:    0x%x\n", ((fdb->flmap0) & 0xff) << 4);

	printf("FLMAP1:    0x%08x\n", fdb->flmap1);
	printf("  ISL:     0x%02x\n", (fdb->flmap1 >> 24) & 0xff);
	printf("  FPSBA:   0x%x\n", ((fdb->flmap1 >> 16) & 0xff) << 4);
	printf("  NM:      %d\n", (fdb->flmap1 >> 8) & 3);
	printf("  FMBA:    0x%x\n", ((fdb->flmap1) & 0xff) << 4);

	printf("FLMAP2:    0x%08x\n", fdb->flmap2);
	printf("  PSL:     0x%04x\n", (fdb->flmap2 >> 8) & 0xffff);
	printf("  FMSBA:   0x%x\n", ((fdb->flmap2) & 0xff) << 4);

	printf("FLUMAP1:   0x%08x\n", fdb->flumap1);
	printf("  Intel ME VSCC Table Length (VTL):        %d\n",
		(fdb->flumap1 >> 8) & 0xff);
	printf("  Intel ME VSCC Table Base Address (VTBA): 0x%06x\n\n",
		(fdb->flumap1 & 0xff) << 4);
	dump_vtba((vtba_t *)
			(image + ((fdb->flumap1 & 0xff) << 4)),
			(fdb->flumap1 >> 8) & 0xff);
	dump_oem((uint8_t *)image + 0xf00);
	dump_frba((frba_t *)
			(image + (((fdb->flmap0 >> 16) & 0xff) << 4)));
	dump_fcba((fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4)));
	dump_fpsba((fpsba_t *)
			(image + (((fdb->flmap1 >> 16) & 0xff) << 4)));
	dump_fmba((fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4)));
	dump_fmsba((fmsba_t *) (image + (((fdb->flmap2) & 0xff) << 4)));
}

static void dump_layout(char *image, int size, char *layout_fname)
{
	fdbar_t *fdb = find_fd(image, size);
	if (!fdb)
		exit(EXIT_FAILURE);

	dump_frba_layout((frba_t *)
			(image + (((fdb->flmap0 >> 16) & 0xff) << 4)),
			layout_fname);
}

static void write_regions(char *image, int size)
{
	int i;

	fdbar_t *fdb = find_fd(image, size);
	if (!fdb)
		exit(EXIT_FAILURE);

	frba_t *frba =
	    (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));

	for (i = 0; i < NUM_REGIONS; i++) {
		region_t region = get_region(frba, i);
		dump_region(i, frba);
		if (region.size > 0) {
			int region_fd;
			region_fd = open(region_filename(i),
					 O_WRONLY | O_CREAT | O_TRUNC,
					 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
			if (region_fd < 0) {
				perror("Error while trying to open file");
				exit(EXIT_FAILURE);
			}
			if (write(region_fd, image + region.base, region.size) != region.size)
				perror("Error while writing");
			close(region_fd);
		}
	}
}

static void write_image(char *filename, char *image, int size)
{
	char new_filename[FILENAME_MAX]; // allow long file names
	int new_fd;

	// - 5: leave room for ".new\0"
	strncpy(new_filename, filename, FILENAME_MAX - 5);
	strncat(new_filename, ".new", FILENAME_MAX - strlen(filename));

	printf("Writing new image to %s\n", new_filename);

	// Now write out new image
	new_fd = open(new_filename,
			 O_WRONLY | O_CREAT | O_TRUNC,
			 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
	if (new_fd < 0) {
		perror("Error while trying to open file");
		exit(EXIT_FAILURE);
	}
	if (write(new_fd, image, size) != size)
		perror("Error while writing");
	close(new_fd);
}

static void set_spi_frequency(char *filename, char *image, int size,
			      enum spi_frequency freq)
{
	fdbar_t *fdb = find_fd(image, size);
	fcba_t *fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));

	/* clear bits 21-29 */
	fcba->flcomp &= ~0x3fe00000;
	/* Read ID and Read Status Clock Frequency */
	fcba->flcomp |= freq << 27;
	/* Write and Erase Clock Frequency */
	fcba->flcomp |= freq << 24;
	/* Fast Read Clock Frequency */
	fcba->flcomp |= freq << 21;

	write_image(filename, image, size);
}

static void set_em100_mode(char *filename, char *image, int size)
{
	fdbar_t *fdb = find_fd(image, size);
	fcba_t *fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));

	fcba->flcomp &= ~(1 << 30);
	set_spi_frequency(filename, image, size, SPI_FREQUENCY_20MHZ);
}

static void lock_descriptor(char *filename, char *image, int size)
{
	fdbar_t *fdb = find_fd(image, size);
	fmba_t *fmba = (fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4));
	/* TODO: Dynamically take Platform Data Region and GbE Region
	 * into regard.
	 */
	fmba->flmstr1 = 0x0a0b0000;
	fmba->flmstr2 = 0x0c0d0000;
	fmba->flmstr3 = 0x08080118;

	write_image(filename, image, size);
}

static void unlock_descriptor(char *filename, char *image, int size)
{
	fdbar_t *fdb = find_fd(image, size);
	fmba_t *fmba = (fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4));
	fmba->flmstr1 = 0xffff0000;
	fmba->flmstr2 = 0xffff0000;
	fmba->flmstr3 = 0x08080118;

	write_image(filename, image, size);
}

void inject_region(char *filename, char *image, int size, int region_type,
		   char *region_fname)
{
	fdbar_t *fdb = find_fd(image, size);
	if (!fdb)
		exit(EXIT_FAILURE);
	frba_t *frba =
	    (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));

	region_t region = get_region(frba, region_type);
	if (region.size <= 0xfff) {
		fprintf(stderr, "Region %s is disabled in target. Not injecting.\n",
				region_name(region_type));
		exit(EXIT_FAILURE);
	}

	int region_fd = open(region_fname, O_RDONLY);
	if (region_fd == -1) {
		perror("Could not open file");
		exit(EXIT_FAILURE);
	}
	struct stat buf;
	if (fstat(region_fd, &buf) == -1) {
		perror("Could not stat file");
		exit(EXIT_FAILURE);
	}
	int region_size = buf.st_size;

	printf("File %s is %d bytes\n", region_fname, region_size);

	if ( (region_size > region.size) || ((region_type != 1) &&
		(region_size > region.size))) {
		fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x)"
				" bytes. Not injecting.\n",
				region_name(region_type), region.size,
				region.size, region_size, region_size);
		exit(EXIT_FAILURE);
	}

	int offset = 0;
	if ((region_type == 1) && (region_size < region.size)) {
		fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x)"
				" bytes. Padding before injecting.\n",
				region_name(region_type), region.size,
				region.size, region_size, region_size);
		offset = region.size - region_size;
		memset(image + region.base, 0xff, offset);
	}

	if (size < region.base + offset + region_size) {
		fprintf(stderr, "Output file is too small. (%d < %d)\n",
			size, region.base + offset + region_size);
		exit(EXIT_FAILURE);
	}

	if (read(region_fd, image + region.base + offset, region_size)
							!= region_size) {
		perror("Could not read file");
		exit(EXIT_FAILURE);
	}

	close(region_fd);

	printf("Adding %s as the %s section of %s\n",
	       region_fname, region_name(region_type), filename);
	write_image(filename, image, size);
}

unsigned int next_pow2(unsigned int x)
{
	unsigned int y = 1;
	if (x == 0)
		return 0;
	while (y <= x)
		y = y << 1;

	return y;
}

/**
 * Determine if two memory regions overlap.
 *
 * @param r1, r2 Memory regions to compare.
 * @return 0 if the two regions are seperate
 * @return 1 if the two regions overlap
 */
static int regions_collide(region_t r1, region_t r2)
{
	if ((r1.size == 0) || (r2.size == 0))
		return 0;

	if ( ((r1.base >= r2.base) && (r1.base <= r2.limit)) ||
	     ((r1.limit >= r2.base) && (r1.limit <= r2.limit)) )
		return 1;

	return 0;
}

void new_layout(char *filename, char *image, int size, char *layout_fname)
{
	FILE *romlayout;
	char tempstr[256];
	char layout_region_name[256];
	int i, j;
	int region_number;
	region_t current_regions[NUM_REGIONS];
	region_t new_regions[NUM_REGIONS];
	int new_extent = 0;
	char *new_image;

	/* load current descriptor map and regions */
	fdbar_t *fdb = find_fd(image, size);
	if (!fdb)
		exit(EXIT_FAILURE);

	frba_t *frba =
	    (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));

	for (i = 0; i < NUM_REGIONS; i++) {
		current_regions[i] = get_region(frba, i);
		new_regions[i] = get_region(frba, i);
	}

	/* read new layout */
	romlayout = fopen(layout_fname, "r");

	if (!romlayout) {
		perror("Could not read layout file.\n");
		exit(EXIT_FAILURE);
	}

	while (!feof(romlayout)) {
		char *tstr1, *tstr2;

		if (2 != fscanf(romlayout, "%s %s\n", tempstr,
					layout_region_name))
			continue;

		region_number = region_num(layout_region_name);
		if (region_number < 0)
			continue;

		tstr1 = strtok(tempstr, ":");
		tstr2 = strtok(NULL, ":");
		if (!tstr1 || !tstr2) {
			fprintf(stderr, "Could not parse layout file.\n");
			exit(EXIT_FAILURE);
		}
		new_regions[region_number].base = strtol(tstr1,
				(char **)NULL, 16);
		new_regions[region_number].limit = strtol(tstr2,
				(char **)NULL, 16);
		new_regions[region_number].size =
			new_regions[region_number].limit -
			new_regions[region_number].base + 1;

		if (new_regions[region_number].size < 0)
			new_regions[region_number].size = 0;
	}
	fclose(romlayout);

	/* check new layout */
	for (i = 0; i < NUM_REGIONS; i++) {
		if (new_regions[i].size == 0)
			continue;

		if (new_regions[i].size < current_regions[i].size) {
			printf("DANGER: Region %s is shrinking.\n",
					region_name(i));
			printf("    The region will be truncated to fit.\n");
			printf("    This may result in an unusable image.\n");
		}

		for (j = i + 1; j < NUM_REGIONS; j++) {
			if (regions_collide(new_regions[i], new_regions[j])) {
				fprintf(stderr, "Regions would overlap.\n");
				exit(EXIT_FAILURE);
			}
		}

		/* detect if the image size should grow */
		if (new_extent < new_regions[i].limit)
			new_extent = new_regions[i].limit;
	}

	new_extent = next_pow2(new_extent - 1);
	if (new_extent != size) {
		printf("The image has changed in size.\n");
		printf("The old image is %d bytes.\n", size);
		printf("The new image is %d bytes.\n", new_extent);
	}

	/* copy regions to a new image */
	new_image = malloc(new_extent);
	memset(new_image, 0xff, new_extent);
	for (i = 0; i < NUM_REGIONS; i++) {
		int copy_size = new_regions[i].size;
		int offset_current = 0, offset_new = 0;
		region_t current = current_regions[i];
		region_t new = new_regions[i];

		if (new.size == 0)
			continue;

		if (new.size > current.size) {
			/* copy from the end of the current region */
			copy_size = current.size;
			offset_new = new.size - current.size;
		}

		if (new.size < current.size) {
			/* copy to the end of the new region */
			offset_current = current.size - new.size;
		}

		printf("Copy Descriptor %d (%s) (%d bytes)\n", i,
				region_name(i), copy_size);
		printf("   from %08x+%08x:%08x (%10d)\n", current.base,
				offset_current, current.limit, current.size);
		printf("     to %08x+%08x:%08x (%10d)\n", new.base,
				offset_new, new.limit, new.size);

		memcpy(new_image + new.base + offset_new,
				image + current.base + offset_current,
				copy_size);
	}

	/* update new descriptor regions */
	fdb = find_fd(new_image, new_extent);
	if (!fdb)
		exit(EXIT_FAILURE);

	frba = (frba_t *) (new_image + (((fdb->flmap0 >> 16) & 0xff) << 4));
	for (i = 1; i < NUM_REGIONS; i++) {
		set_region(frba, i, new_regions[i]);
	}

	write_image(filename, new_image, new_extent);
	free(new_image);
}

static void print_version(void)
{
	printf("ifdtool v%s -- ", IFDTOOL_VERSION);
	printf("Copyright (C) 2011 Google Inc.\n\n");
	printf
	    ("This program is free software: you can redistribute it and/or modify\n"
	     "it under the terms of the GNU General Public License as published by\n"
	     "the Free Software Foundation, version 2 of the License.\n\n"
	     "This program is distributed in the hope that it will be useful,\n"
	     "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
	     "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
	     "GNU General Public License for more details.\n\n"
	     "You should have received a copy of the GNU General Public License\n"
	     "along with this program.  If not, see <http://www.gnu.org/licenses/>.\n\n");
}

static void print_usage(const char *name)
{
	printf("usage: %s [-vhdix?] <filename>\n", name);
	printf("\n"
	       "   -d | --dump:                      dump intel firmware descriptor\n"
	       "   -f | --layout <filename>          dump regions into a flashrom layout file\n"
	       "   -x | --extract:                   extract intel fd modules\n"
	       "   -i | --inject <region>:<module>   inject file <module> into region <region>\n"
	       "   -n | --newlayout <filename>       update regions using a flashrom layout file\n"
	       "   -s | --spifreq <20|33|50>         set the SPI frequency\n"
	       "   -e | --em100                      set SPI frequency to 20MHz and disable\n"
	       "                                     Dual Output Fast Read Support\n"
	       "   -l | --lock                       Lock firmware descriptor and ME region\n"
	       "   -u | --unlock                     Unlock firmware descriptor and ME region\n"
	       "   -v | --version:                   print the version\n"
	       "   -h | --help:                      print this help\n\n"
	       "<region> is one of Descriptor, BIOS, ME, GbE, Platform\n"
	       "\n");
}

int main(int argc, char *argv[])
{
	int opt, option_index = 0;
	int mode_dump = 0, mode_extract = 0, mode_inject = 0, mode_spifreq = 0;
	int mode_em100 = 0, mode_locked = 0, mode_unlocked = 0;
	int mode_layout = 0, mode_newlayout = 0;
	char *region_type_string = NULL, *region_fname = NULL, *layout_fname = NULL;
	int region_type = -1, inputfreq = 0;
	enum spi_frequency spifreq = SPI_FREQUENCY_20MHZ;

	static struct option long_options[] = {
		{"dump", 0, NULL, 'd'},
		{"layout", 1, NULL, 'f'},
		{"extract", 0, NULL, 'x'},
		{"inject", 1, NULL, 'i'},
		{"newlayout", 1, NULL, 'n'},
		{"spifreq", 1, NULL, 's'},
		{"em100", 0, NULL, 'e'},
		{"lock", 0, NULL, 'l'},
		{"unlock", 0, NULL, 'u'},
		{"version", 0, NULL, 'v'},
		{"help", 0, NULL, 'h'},
		{0, 0, 0, 0}
	};

	while ((opt = getopt_long(argc, argv, "df:xi:n:s:eluvh?",
				  long_options, &option_index)) != EOF) {
		switch (opt) {
		case 'd':
			mode_dump = 1;
			break;
		case 'f':
			mode_layout = 1;
			layout_fname = strdup(optarg);
			if (!layout_fname) {
				fprintf(stderr, "No layout file specified\n");
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			break;
		case 'x':
			mode_extract = 1;
			break;
		case 'i':
			// separate type and file name
			region_type_string = strdup(optarg);
			region_fname = strchr(region_type_string, ':');
			if (!region_fname) {
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			region_fname[0] = '\0';
			region_fname++;
			// Descriptor, BIOS, ME, GbE, Platform
			// valid type?
			if (!strcasecmp("Descriptor", region_type_string))
				region_type = 0;
			else if (!strcasecmp("BIOS", region_type_string))
				region_type = 1;
			else if (!strcasecmp("ME", region_type_string))
				region_type = 2;
			else if (!strcasecmp("GbE", region_type_string))
				region_type = 3;
			else if (!strcasecmp("Platform", region_type_string))
				region_type = 4;
			if (region_type == -1) {
				fprintf(stderr, "No such region type: '%s'\n\n",
					region_type_string);
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			mode_inject = 1;
			break;
		case 'n':
			mode_newlayout = 1;
			layout_fname = strdup(optarg);
			if (!layout_fname) {
				fprintf(stderr, "No layout file specified\n");
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			break;
		case 's':
			// Parse the requested SPI frequency
			inputfreq = strtol(optarg, NULL, 0);
			switch (inputfreq) {
			case 20:
				spifreq = SPI_FREQUENCY_20MHZ;
				break;
			case 33:
				spifreq = SPI_FREQUENCY_33MHZ;
				break;
			case 50:
				spifreq = SPI_FREQUENCY_50MHZ;
				break;
			default:
				fprintf(stderr, "Invalid SPI Frequency: %d\n",
					inputfreq);
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			mode_spifreq = 1;
			break;
		case 'e':
			mode_em100 = 1;
			break;
		case 'l':
			mode_locked = 1;
			if (mode_unlocked == 1) {
				fprintf(stderr, "Locking/Unlocking FD and ME are mutually exclusive\n");
				exit(EXIT_FAILURE);
			}
			break;
		case 'u':
			mode_unlocked = 1;
			if (mode_locked == 1) {
				fprintf(stderr, "Locking/Unlocking FD and ME are mutually exclusive\n");
				exit(EXIT_FAILURE);
			}
			break;
		case 'v':
			print_version();
			exit(EXIT_SUCCESS);
			break;
		case 'h':
		case '?':
		default:
			print_usage(argv[0]);
			exit(EXIT_SUCCESS);
			break;
		}
	}

	if ((mode_dump + mode_layout + mode_extract + mode_inject +
		mode_newlayout + (mode_spifreq | mode_em100 | mode_unlocked |
		 mode_locked)) > 1) {
		fprintf(stderr, "You may not specify more than one mode.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	if ((mode_dump + mode_layout + mode_extract + mode_inject +
	     mode_newlayout + mode_spifreq + mode_em100 + mode_locked +
	     mode_unlocked) == 0) {
		fprintf(stderr, "You need to specify a mode.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	if (optind + 1 != argc) {
		fprintf(stderr, "You need to specify a file.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	char *filename = argv[optind];
	int bios_fd = open(filename, O_RDONLY);
	if (bios_fd == -1) {
		perror("Could not open file");
		exit(EXIT_FAILURE);
	}
	struct stat buf;
	if (fstat(bios_fd, &buf) == -1) {
		perror("Could not stat file");
		exit(EXIT_FAILURE);
	}
	int size = buf.st_size;

	printf("File %s is %d bytes\n", filename, size);

	char *image = malloc(size);
	if (!image) {
		printf("Out of memory.\n");
		exit(EXIT_FAILURE);
	}

	if (read(bios_fd, image, size) != size) {
		perror("Could not read file");
		exit(EXIT_FAILURE);
	}

	close(bios_fd);

	if (mode_dump)
		dump_fd(image, size);

	if (mode_layout)
		dump_layout(image, size, layout_fname);

	if (mode_extract)
		write_regions(image, size);

	if (mode_inject)
		inject_region(filename, image, size, region_type,
				region_fname);

	if (mode_newlayout)
		new_layout(filename, image, size, layout_fname);

	if (mode_spifreq)
		set_spi_frequency(filename, image, size, spifreq);

	if (mode_em100)
		set_em100_mode(filename, image, size);

	if(mode_locked)
		lock_descriptor(filename, image, size);

	if (mode_unlocked)
		unlock_descriptor(filename, image, size);

	free(image);

	return 0;
}