summaryrefslogtreecommitdiff
path: root/tools/kwbimage.c
blob: 8fe3bf41e9d0c7d33c3e15a498342e7d04b77075 (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
/*
 * Image manipulator for Marvell SoCs
 *  supports Kirkwood, Dove, Armada 370, and Armada XP
 *
 * (C) Copyright 2013 Thomas Petazzoni
 * <thomas.petazzoni@free-electrons.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * Not implemented: support for the register headers and secure
 * headers in v1 images
 */

#include "imagetool.h"
#include <limits.h>
#include <image.h>
#include <stdint.h>
#include "kwbimage.h"

static struct image_cfg_element *image_cfg;
static int cfgn;

struct boot_mode {
	unsigned int id;
	const char *name;
};

struct boot_mode boot_modes[] = {
	{ 0x4D, "i2c"  },
	{ 0x5A, "spi"  },
	{ 0x8B, "nand" },
	{ 0x78, "sata" },
	{ 0x9C, "pex"  },
	{ 0x69, "uart" },
	{ 0xAE, "sdio" },
	{},
};

struct nand_ecc_mode {
	unsigned int id;
	const char *name;
};

struct nand_ecc_mode nand_ecc_modes[] = {
	{ 0x00, "default" },
	{ 0x01, "hamming" },
	{ 0x02, "rs" },
	{ 0x03, "disabled" },
	{},
};

/* Used to identify an undefined execution or destination address */
#define ADDR_INVALID ((uint32_t)-1)

#define BINARY_MAX_ARGS 8

/* In-memory representation of a line of the configuration file */
struct image_cfg_element {
	enum {
		IMAGE_CFG_VERSION = 0x1,
		IMAGE_CFG_BOOT_FROM,
		IMAGE_CFG_DEST_ADDR,
		IMAGE_CFG_EXEC_ADDR,
		IMAGE_CFG_NAND_BLKSZ,
		IMAGE_CFG_NAND_BADBLK_LOCATION,
		IMAGE_CFG_NAND_ECC_MODE,
		IMAGE_CFG_NAND_PAGESZ,
		IMAGE_CFG_BINARY,
		IMAGE_CFG_PAYLOAD,
		IMAGE_CFG_DATA,
	} type;
	union {
		unsigned int version;
		unsigned int bootfrom;
		struct {
			const char *file;
			unsigned int args[BINARY_MAX_ARGS];
			unsigned int nargs;
		} binary;
		const char *payload;
		unsigned int dstaddr;
		unsigned int execaddr;
		unsigned int nandblksz;
		unsigned int nandbadblklocation;
		unsigned int nandeccmode;
		unsigned int nandpagesz;
		struct ext_hdr_v0_reg regdata;
	};
};

#define IMAGE_CFG_ELEMENT_MAX 256

/*
 * Utility functions to manipulate boot mode and ecc modes (convert
 * them back and forth between description strings and the
 * corresponding numerical identifiers).
 */

static const char *image_boot_mode_name(unsigned int id)
{
	int i;
	for (i = 0; boot_modes[i].name; i++)
		if (boot_modes[i].id == id)
			return boot_modes[i].name;
	return NULL;
}

int image_boot_mode_id(const char *boot_mode_name)
{
	int i;
	for (i = 0; boot_modes[i].name; i++)
		if (!strcmp(boot_modes[i].name, boot_mode_name))
			return boot_modes[i].id;

	return -1;
}

int image_nand_ecc_mode_id(const char *nand_ecc_mode_name)
{
	int i;
	for (i = 0; nand_ecc_modes[i].name; i++)
		if (!strcmp(nand_ecc_modes[i].name, nand_ecc_mode_name))
			return nand_ecc_modes[i].id;
	return -1;
}

static struct image_cfg_element *
image_find_option(unsigned int optiontype)
{
	int i;

	for (i = 0; i < cfgn; i++) {
		if (image_cfg[i].type == optiontype)
			return &image_cfg[i];
	}

	return NULL;
}

static unsigned int
image_count_options(unsigned int optiontype)
{
	int i;
	unsigned int count = 0;

	for (i = 0; i < cfgn; i++)
		if (image_cfg[i].type == optiontype)
			count++;

	return count;
}

/*
 * Compute a 8-bit checksum of a memory area. This algorithm follows
 * the requirements of the Marvell SoC BootROM specifications.
 */
static uint8_t image_checksum8(void *start, uint32_t len)
{
	uint8_t csum = 0;
	uint8_t *p = start;

	/* check len and return zero checksum if invalid */
	if (!len)
		return 0;

	do {
		csum += *p;
		p++;
	} while (--len);

	return csum;
}

static uint32_t image_checksum32(void *start, uint32_t len)
{
	uint32_t csum = 0;
	uint32_t *p = start;

	/* check len and return zero checksum if invalid */
	if (!len)
		return 0;

	if (len % sizeof(uint32_t)) {
		fprintf(stderr, "Length %d is not in multiple of %zu\n",
			len, sizeof(uint32_t));
		return 0;
	}

	do {
		csum += *p;
		p++;
		len -= sizeof(uint32_t);
	} while (len > 0);

	return csum;
}

static void *image_create_v0(size_t *imagesz, struct image_tool_params *params,
			     int payloadsz)
{
	struct image_cfg_element *e;
	size_t headersz;
	struct main_hdr_v0 *main_hdr;
	struct ext_hdr_v0 *ext_hdr;
	void *image;
	int has_ext = 0;

	/*
	 * Calculate the size of the header and the size of the
	 * payload
	 */
	headersz  = sizeof(struct main_hdr_v0);

	if (image_count_options(IMAGE_CFG_DATA) > 0) {
		has_ext = 1;
		headersz += sizeof(struct ext_hdr_v0);
	}

	if (image_count_options(IMAGE_CFG_PAYLOAD) > 1) {
		fprintf(stderr, "More than one payload, not possible\n");
		return NULL;
	}

	image = malloc(headersz);
	if (!image) {
		fprintf(stderr, "Cannot allocate memory for image\n");
		return NULL;
	}

	memset(image, 0, headersz);

	main_hdr = image;

	/* Fill in the main header */
	main_hdr->blocksize = payloadsz + sizeof(uint32_t) - headersz;
	main_hdr->srcaddr   = headersz;
	main_hdr->ext       = has_ext;
	main_hdr->destaddr  = params->addr;
	main_hdr->execaddr  = params->ep;

	e = image_find_option(IMAGE_CFG_BOOT_FROM);
	if (e)
		main_hdr->blockid = e->bootfrom;
	e = image_find_option(IMAGE_CFG_NAND_ECC_MODE);
	if (e)
		main_hdr->nandeccmode = e->nandeccmode;
	e = image_find_option(IMAGE_CFG_NAND_PAGESZ);
	if (e)
		main_hdr->nandpagesize = e->nandpagesz;
	main_hdr->checksum = image_checksum8(image,
					     sizeof(struct main_hdr_v0));

	/* Generate the ext header */
	if (has_ext) {
		int cfgi, datai;

		ext_hdr = image + sizeof(struct main_hdr_v0);
		ext_hdr->offset = 0x40;

		for (cfgi = 0, datai = 0; cfgi < cfgn; cfgi++) {
			e = &image_cfg[cfgi];
			if (e->type != IMAGE_CFG_DATA)
				continue;

			ext_hdr->rcfg[datai].raddr = e->regdata.raddr;
			ext_hdr->rcfg[datai].rdata = e->regdata.rdata;
			datai++;
		}

		ext_hdr->checksum = image_checksum8(ext_hdr,
						    sizeof(struct ext_hdr_v0));
	}

	*imagesz = headersz;
	return image;
}

static size_t image_headersz_v1(struct image_tool_params *params,
				int *hasext)
{
	struct image_cfg_element *binarye;
	size_t headersz;
	int ret;

	/*
	 * Calculate the size of the header and the size of the
	 * payload
	 */
	headersz = sizeof(struct main_hdr_v1);

	if (image_count_options(IMAGE_CFG_BINARY) > 1) {
		fprintf(stderr, "More than one binary blob, not supported\n");
		return 0;
	}

	if (image_count_options(IMAGE_CFG_PAYLOAD) > 1) {
		fprintf(stderr, "More than one payload, not possible\n");
		return 0;
	}

	binarye = image_find_option(IMAGE_CFG_BINARY);
	if (binarye) {
		struct stat s;

		ret = stat(binarye->binary.file, &s);
		if (ret < 0) {
			char cwd[PATH_MAX];
			char *dir = cwd;

			memset(cwd, 0, sizeof(cwd));
			if (!getcwd(cwd, sizeof(cwd))) {
				dir = "current working directory";
				perror("getcwd() failed");
			}

			fprintf(stderr,
				"Didn't find the file '%s' in '%s' which is mandatory to generate the image\n"
				"This file generally contains the DDR3 training code, and should be extracted from an existing bootable\n"
				"image for your board. See 'kwbimage -x' to extract it from an existing image.\n",
				binarye->binary.file, dir);
			return 0;
		}

		headersz += s.st_size +
			binarye->binary.nargs * sizeof(unsigned int);
		if (hasext)
			*hasext = 1;
	}

#if defined(CONFIG_SYS_U_BOOT_OFFS)
	if (headersz > CONFIG_SYS_U_BOOT_OFFS) {
		fprintf(stderr, "Error: Image header (incl. SPL image) too big!\n");
		fprintf(stderr, "header=0x%x CONFIG_SYS_U_BOOT_OFFS=0x%x!\n",
			(int)headersz, CONFIG_SYS_U_BOOT_OFFS);
		fprintf(stderr, "Increase CONFIG_SYS_U_BOOT_OFFS!\n");
		return 0;
	} else {
		headersz = CONFIG_SYS_U_BOOT_OFFS;
	}
#endif

	/*
	 * The payload should be aligned on some reasonable
	 * boundary
	 */
	return ALIGN_SUP(headersz, 4096);
}

static void *image_create_v1(size_t *imagesz, struct image_tool_params *params,
			     int payloadsz)
{
	struct image_cfg_element *e, *binarye;
	struct main_hdr_v1 *main_hdr;
	size_t headersz;
	void *image, *cur;
	int hasext = 0;
	int ret;

	/*
	 * Calculate the size of the header and the size of the
	 * payload
	 */
	headersz = image_headersz_v1(params, &hasext);
	if (headersz == 0)
		return NULL;

	image = malloc(headersz);
	if (!image) {
		fprintf(stderr, "Cannot allocate memory for image\n");
		return NULL;
	}

	memset(image, 0, headersz);

	cur = main_hdr = image;
	cur += sizeof(struct main_hdr_v1);

	/* Fill the main header */
	main_hdr->blocksize    = payloadsz - headersz + sizeof(uint32_t);
	main_hdr->headersz_lsb = headersz & 0xFFFF;
	main_hdr->headersz_msb = (headersz & 0xFFFF0000) >> 16;
	main_hdr->destaddr     = params->addr;
	main_hdr->execaddr     = params->ep;
	main_hdr->srcaddr      = headersz;
	main_hdr->ext          = hasext;
	main_hdr->version      = 1;
	e = image_find_option(IMAGE_CFG_BOOT_FROM);
	if (e)
		main_hdr->blockid = e->bootfrom;
	e = image_find_option(IMAGE_CFG_NAND_BLKSZ);
	if (e)
		main_hdr->nandblocksize = e->nandblksz / (64 * 1024);
	e = image_find_option(IMAGE_CFG_NAND_BADBLK_LOCATION);
	if (e)
		main_hdr->nandbadblklocation = e->nandbadblklocation;

	binarye = image_find_option(IMAGE_CFG_BINARY);
	if (binarye) {
		struct opt_hdr_v1 *hdr = cur;
		unsigned int *args;
		size_t binhdrsz;
		struct stat s;
		int argi;
		FILE *bin;

		hdr->headertype = OPT_HDR_V1_BINARY_TYPE;

		bin = fopen(binarye->binary.file, "r");
		if (!bin) {
			fprintf(stderr, "Cannot open binary file %s\n",
				binarye->binary.file);
			return NULL;
		}

		fstat(fileno(bin), &s);

		binhdrsz = sizeof(struct opt_hdr_v1) +
			(binarye->binary.nargs + 1) * sizeof(unsigned int) +
			s.st_size;

		/*
		 * The size includes the binary image size, rounded
		 * up to a 4-byte boundary. Plus 4 bytes for the
		 * next-header byte and 3-byte alignment at the end.
		 */
		binhdrsz = ALIGN_SUP(binhdrsz, 4) + 4;
		hdr->headersz_lsb = binhdrsz & 0xFFFF;
		hdr->headersz_msb = (binhdrsz & 0xFFFF0000) >> 16;

		cur += sizeof(struct opt_hdr_v1);

		args = cur;
		*args = binarye->binary.nargs;
		args++;
		for (argi = 0; argi < binarye->binary.nargs; argi++)
			args[argi] = binarye->binary.args[argi];

		cur += (binarye->binary.nargs + 1) * sizeof(unsigned int);

		ret = fread(cur, s.st_size, 1, bin);
		if (ret != 1) {
			fprintf(stderr,
				"Could not read binary image %s\n",
				binarye->binary.file);
			return NULL;
		}

		fclose(bin);

		cur += ALIGN_SUP(s.st_size, 4);

		/*
		 * For now, we don't support more than one binary
		 * header, and no other header types are
		 * supported. So, the binary header is necessarily the
		 * last one
		 */
		*((uint32_t *)cur) = 0x00000000;

		cur += sizeof(uint32_t);
	}

	/* Calculate and set the header checksum */
	main_hdr->checksum = image_checksum8(main_hdr, headersz);

	*imagesz = headersz;
	return image;
}

static int image_create_config_parse_oneline(char *line,
					     struct image_cfg_element *el)
{
	char *keyword, *saveptr;
	char deliminiters[] = " \t";

	keyword = strtok_r(line, deliminiters, &saveptr);
	if (!strcmp(keyword, "VERSION")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		el->type = IMAGE_CFG_VERSION;
		el->version = atoi(value);
	} else if (!strcmp(keyword, "BOOT_FROM")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		int ret = image_boot_mode_id(value);
		if (ret < 0) {
			fprintf(stderr,
				"Invalid boot media '%s'\n", value);
			return -1;
		}
		el->type = IMAGE_CFG_BOOT_FROM;
		el->bootfrom = ret;
	} else if (!strcmp(keyword, "NAND_BLKSZ")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		el->type = IMAGE_CFG_NAND_BLKSZ;
		el->nandblksz = strtoul(value, NULL, 16);
	} else if (!strcmp(keyword, "NAND_BADBLK_LOCATION")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		el->type = IMAGE_CFG_NAND_BADBLK_LOCATION;
		el->nandbadblklocation =
			strtoul(value, NULL, 16);
	} else if (!strcmp(keyword, "NAND_ECC_MODE")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		int ret = image_nand_ecc_mode_id(value);
		if (ret < 0) {
			fprintf(stderr,
				"Invalid NAND ECC mode '%s'\n", value);
			return -1;
		}
		el->type = IMAGE_CFG_NAND_ECC_MODE;
		el->nandeccmode = ret;
	} else if (!strcmp(keyword, "NAND_PAGE_SIZE")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		el->type = IMAGE_CFG_NAND_PAGESZ;
		el->nandpagesz = strtoul(value, NULL, 16);
	} else if (!strcmp(keyword, "BINARY")) {
		char *value = strtok_r(NULL, deliminiters, &saveptr);
		int argi = 0;

		el->type = IMAGE_CFG_BINARY;
		el->binary.file = strdup(value);
		while (1) {
			value = strtok_r(NULL, deliminiters, &saveptr);
			if (!value)
				break;
			el->binary.args[argi] = strtoul(value, NULL, 16);
			argi++;
			if (argi >= BINARY_MAX_ARGS) {
				fprintf(stderr,
					"Too many argument for binary\n");
				return -1;
			}
		}
		el->binary.nargs = argi;
	} else if (!strcmp(keyword, "DATA")) {
		char *value1 = strtok_r(NULL, deliminiters, &saveptr);
		char *value2 = strtok_r(NULL, deliminiters, &saveptr);

		if (!value1 || !value2) {
			fprintf(stderr,
				"Invalid number of arguments for DATA\n");
			return -1;
		}

		el->type = IMAGE_CFG_DATA;
		el->regdata.raddr = strtoul(value1, NULL, 16);
		el->regdata.rdata = strtoul(value2, NULL, 16);
	} else {
		fprintf(stderr, "Ignoring unknown line '%s'\n", line);
	}

	return 0;
}

/*
 * Parse the configuration file 'fcfg' into the array of configuration
 * elements 'image_cfg', and return the number of configuration
 * elements in 'cfgn'.
 */
static int image_create_config_parse(FILE *fcfg)
{
	int ret;
	int cfgi = 0;

	/* Parse the configuration file */
	while (!feof(fcfg)) {
		char *line;
		char buf[256];

		/* Read the current line */
		memset(buf, 0, sizeof(buf));
		line = fgets(buf, sizeof(buf), fcfg);
		if (!line)
			break;

		/* Ignore useless lines */
		if (line[0] == '\n' || line[0] == '#')
			continue;

		/* Strip final newline */
		if (line[strlen(line) - 1] == '\n')
			line[strlen(line) - 1] = 0;

		/* Parse the current line */
		ret = image_create_config_parse_oneline(line,
							&image_cfg[cfgi]);
		if (ret)
			return ret;

		cfgi++;

		if (cfgi >= IMAGE_CFG_ELEMENT_MAX) {
			fprintf(stderr,
				"Too many configuration elements in .cfg file\n");
			return -1;
		}
	}

	cfgn = cfgi;
	return 0;
}

static int image_get_version(void)
{
	struct image_cfg_element *e;

	e = image_find_option(IMAGE_CFG_VERSION);
	if (!e)
		return -1;

	return e->version;
}

static int image_version_file(const char *input)
{
	FILE *fcfg;
	int version;
	int ret;

	fcfg = fopen(input, "r");
	if (!fcfg) {
		fprintf(stderr, "Could not open input file %s\n", input);
		return -1;
	}

	image_cfg = malloc(IMAGE_CFG_ELEMENT_MAX *
			   sizeof(struct image_cfg_element));
	if (!image_cfg) {
		fprintf(stderr, "Cannot allocate memory\n");
		fclose(fcfg);
		return -1;
	}

	memset(image_cfg, 0,
	       IMAGE_CFG_ELEMENT_MAX * sizeof(struct image_cfg_element));
	rewind(fcfg);

	ret = image_create_config_parse(fcfg);
	fclose(fcfg);
	if (ret) {
		free(image_cfg);
		return -1;
	}

	version = image_get_version();
	/* Fallback to version 0 is no version is provided in the cfg file */
	if (version == -1)
		version = 0;

	free(image_cfg);

	return version;
}

static void kwbimage_set_header(void *ptr, struct stat *sbuf, int ifd,
				struct image_tool_params *params)
{
	FILE *fcfg;
	void *image = NULL;
	int version;
	size_t headersz = 0;
	uint32_t checksum;
	int ret;
	int size;

	fcfg = fopen(params->imagename, "r");
	if (!fcfg) {
		fprintf(stderr, "Could not open input file %s\n",
			params->imagename);
		exit(EXIT_FAILURE);
	}

	image_cfg = malloc(IMAGE_CFG_ELEMENT_MAX *
			   sizeof(struct image_cfg_element));
	if (!image_cfg) {
		fprintf(stderr, "Cannot allocate memory\n");
		fclose(fcfg);
		exit(EXIT_FAILURE);
	}

	memset(image_cfg, 0,
	       IMAGE_CFG_ELEMENT_MAX * sizeof(struct image_cfg_element));
	rewind(fcfg);

	ret = image_create_config_parse(fcfg);
	fclose(fcfg);
	if (ret) {
		free(image_cfg);
		exit(EXIT_FAILURE);
	}

	/* The MVEBU BootROM does not allow non word aligned payloads */
	sbuf->st_size = ALIGN_SUP(sbuf->st_size, 4);

	version = image_get_version();
	switch (version) {
		/*
		 * Fallback to version 0 if no version is provided in the
		 * cfg file
		 */
	case -1:
	case 0:
		image = image_create_v0(&headersz, params, sbuf->st_size);
		break;

	case 1:
		image = image_create_v1(&headersz, params, sbuf->st_size);
		break;

	default:
		fprintf(stderr, "Unsupported version %d\n", version);
		free(image_cfg);
		exit(EXIT_FAILURE);
	}

	if (!image) {
		fprintf(stderr, "Could not create image\n");
		free(image_cfg);
		exit(EXIT_FAILURE);
	}

	free(image_cfg);

	/* Build and add image checksum header */
	checksum = image_checksum32((uint32_t *)ptr, sbuf->st_size);
	size = write(ifd, &checksum, sizeof(uint32_t));
	if (size != sizeof(uint32_t)) {
		fprintf(stderr, "Error:%s - Checksum write %d bytes %s\n",
			params->cmdname, size, params->imagefile);
		exit(EXIT_FAILURE);
	}

	sbuf->st_size += sizeof(uint32_t);

	/* Finally copy the header into the image area */
	memcpy(ptr, image, headersz);

	free(image);
}

static void kwbimage_print_header(const void *ptr)
{
	struct main_hdr_v0 *mhdr = (struct main_hdr_v0 *)ptr;

	printf("Image Type:   MVEBU Boot from %s Image\n",
	       image_boot_mode_name(mhdr->blockid));
	printf("Image version:%d\n", image_version((void *)ptr));
	printf("Data Size:    ");
	genimg_print_size(mhdr->blocksize - sizeof(uint32_t));
	printf("Load Address: %08x\n", mhdr->destaddr);
	printf("Entry Point:  %08x\n", mhdr->execaddr);
}

static int kwbimage_check_image_types(uint8_t type)
{
	if (type == IH_TYPE_KWBIMAGE)
		return EXIT_SUCCESS;
	else
		return EXIT_FAILURE;
}

static int kwbimage_verify_header(unsigned char *ptr, int image_size,
				  struct image_tool_params *params)
{
	struct main_hdr_v0 *main_hdr;
	struct ext_hdr_v0 *ext_hdr;
	uint8_t checksum;

	main_hdr = (void *)ptr;
	checksum = image_checksum8(ptr,
				   sizeof(struct main_hdr_v0)
				   - sizeof(uint8_t));
	if (checksum != main_hdr->checksum)
		return -FDT_ERR_BADSTRUCTURE;

	/* Only version 0 extended header has checksum */
	if (image_version((void *)ptr) == 0) {
		ext_hdr = (void *)ptr + sizeof(struct main_hdr_v0);
		checksum = image_checksum8(ext_hdr,
					   sizeof(struct ext_hdr_v0)
					   - sizeof(uint8_t));
		if (checksum != ext_hdr->checksum)
			return -FDT_ERR_BADSTRUCTURE;
	}

	return 0;
}

static int kwbimage_generate(struct image_tool_params *params,
			     struct image_type_params *tparams)
{
	int alloc_len;
	void *hdr;
	int version = 0;

	version = image_version_file(params->imagename);
	if (version == 0) {
		alloc_len = sizeof(struct main_hdr_v0) +
			sizeof(struct ext_hdr_v0);
	} else {
		alloc_len = image_headersz_v1(params, NULL);
	}

	hdr = malloc(alloc_len);
	if (!hdr) {
		fprintf(stderr, "%s: malloc return failure: %s\n",
			params->cmdname, strerror(errno));
		exit(EXIT_FAILURE);
	}

	memset(hdr, 0, alloc_len);
	tparams->header_size = alloc_len;
	tparams->hdr = hdr;

	/*
	 * The resulting image needs to be 4-byte aligned. At least
	 * the Marvell hdrparser tool complains if its unaligned.
	 * By returning 1 here in this function, called via
	 * tparams->vrec_header() in mkimage.c, mkimage will
	 * automatically pad the the resulting image to a 4-byte
	 * size if necessary.
	 */
	return 1;
}

/*
 * Report Error if xflag is set in addition to default
 */
static int kwbimage_check_params(struct image_tool_params *params)
{
	if (!strlen(params->imagename)) {
		fprintf(stderr, "Error:%s - Configuration file not specified, "
			"it is needed for kwbimage generation\n",
			params->cmdname);
		return CFG_INVALID;
	}

	return (params->dflag && (params->fflag || params->lflag)) ||
		(params->fflag && (params->dflag || params->lflag)) ||
		(params->lflag && (params->dflag || params->fflag)) ||
		(params->xflag) || !(strlen(params->imagename));
}

/*
 * kwbimage type parameters definition
 */
U_BOOT_IMAGE_TYPE(
	kwbimage,
	"Marvell MVEBU Boot Image support",
	0,
	NULL,
	kwbimage_check_params,
	kwbimage_verify_header,
	kwbimage_print_header,
	kwbimage_set_header,
	NULL,
	kwbimage_check_image_types,
	NULL,
	kwbimage_generate
);