xref: /openbmc/u-boot/tools/imximage.c (revision 4614b891)
1 /*
2  * (C) Copyright 2009
3  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
4  *
5  * (C) Copyright 2008
6  * Marvell Semiconductor <www.marvell.com>
7  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
8  *
9  * SPDX-License-Identifier:	GPL-2.0+
10  */
11 
12 #include "imagetool.h"
13 #include <image.h>
14 #include "imximage.h"
15 
16 #define UNDEFINED 0xFFFFFFFF
17 
18 /*
19  * Supported commands for configuration file
20  */
21 static table_entry_t imximage_cmds[] = {
22 	{CMD_BOOT_FROM,         "BOOT_FROM",            "boot command",	  },
23 	{CMD_BOOT_OFFSET,       "BOOT_OFFSET",          "Boot offset",	  },
24 	{CMD_DATA,              "DATA",                 "Reg Write Data", },
25 	{CMD_CSF,               "CSF",           "Command Sequence File", },
26 	{CMD_IMAGE_VERSION,     "IMAGE_VERSION",        "image version",  },
27 	{-1,                    "",                     "",	          },
28 };
29 
30 /*
31  * Supported Boot options for configuration file
32  * this is needed to set the correct flash offset
33  */
34 static table_entry_t imximage_boot_offset[] = {
35 	{FLASH_OFFSET_ONENAND,	"onenand",	"OneNAND Flash",},
36 	{FLASH_OFFSET_NAND,	"nand",		"NAND Flash",	},
37 	{FLASH_OFFSET_NOR,	"nor",		"NOR Flash",	},
38 	{FLASH_OFFSET_SATA,	"sata",		"SATA Disk",	},
39 	{FLASH_OFFSET_SD,	"sd",		"SD Card",	},
40 	{FLASH_OFFSET_SPI,	"spi",		"SPI Flash",	},
41 	{FLASH_OFFSET_QSPI,	"qspi",		"QSPI NOR Flash",},
42 	{-1,			"",		"Invalid",	},
43 };
44 
45 /*
46  * Supported Boot options for configuration file
47  * this is needed to determine the initial load size
48  */
49 static table_entry_t imximage_boot_loadsize[] = {
50 	{FLASH_LOADSIZE_ONENAND,	"onenand",	"OneNAND Flash",},
51 	{FLASH_LOADSIZE_NAND,		"nand",		"NAND Flash",	},
52 	{FLASH_LOADSIZE_NOR,		"nor",		"NOR Flash",	},
53 	{FLASH_LOADSIZE_SATA,		"sata",		"SATA Disk",	},
54 	{FLASH_LOADSIZE_SD,		"sd",		"SD Card",	},
55 	{FLASH_LOADSIZE_SPI,		"spi",		"SPI Flash",	},
56 	{FLASH_LOADSIZE_QSPI,		"qspi",		"QSPI NOR Flash",},
57 	{-1,				"",		"Invalid",	},
58 };
59 
60 /*
61  * IMXIMAGE version definition for i.MX chips
62  */
63 static table_entry_t imximage_versions[] = {
64 	{IMXIMAGE_V1,	"",	" (i.MX25/35/51 compatible)", },
65 	{IMXIMAGE_V2,	"",	" (i.MX53/6 compatible)",     },
66 	{-1,            "",     " (Invalid)",                 },
67 };
68 
69 static struct imx_header imximage_header;
70 static uint32_t imximage_version;
71 /*
72  * Image Vector Table Offset
73  * Initialized to a wrong not 4-bytes aligned address to
74  * check if it is was set by the cfg file.
75  */
76 static uint32_t imximage_ivt_offset = UNDEFINED;
77 static uint32_t imximage_csf_size = UNDEFINED;
78 /* Initial Load Region Size */
79 static uint32_t imximage_init_loadsize;
80 
81 static set_dcd_val_t set_dcd_val;
82 static set_dcd_rst_t set_dcd_rst;
83 static set_imx_hdr_t set_imx_hdr;
84 static uint32_t max_dcd_entries;
85 static uint32_t *header_size_ptr;
86 static uint32_t *csf_ptr;
87 
88 static uint32_t get_cfg_value(char *token, char *name,  int linenr)
89 {
90 	char *endptr;
91 	uint32_t value;
92 
93 	errno = 0;
94 	value = strtoul(token, &endptr, 16);
95 	if (errno || (token == endptr)) {
96 		fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n",
97 			name,  linenr, token);
98 		exit(EXIT_FAILURE);
99 	}
100 	return value;
101 }
102 
103 static uint32_t detect_imximage_version(struct imx_header *imx_hdr)
104 {
105 	imx_header_v1_t *hdr_v1 = &imx_hdr->header.hdr_v1;
106 	imx_header_v2_t *hdr_v2 = &imx_hdr->header.hdr_v2;
107 	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
108 	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
109 
110 	/* Try to detect V1 */
111 	if ((fhdr_v1->app_code_barker == APP_CODE_BARKER) &&
112 		(hdr_v1->dcd_table.preamble.barker == DCD_BARKER))
113 		return IMXIMAGE_V1;
114 
115 	/* Try to detect V2 */
116 	if ((fhdr_v2->header.tag == IVT_HEADER_TAG) &&
117 		(hdr_v2->dcd_table.header.tag == DCD_HEADER_TAG))
118 		return IMXIMAGE_V2;
119 
120 	return IMXIMAGE_VER_INVALID;
121 }
122 
123 static void err_imximage_version(int version)
124 {
125 	fprintf(stderr,
126 		"Error: Unsupported imximage version:%d\n", version);
127 
128 	exit(EXIT_FAILURE);
129 }
130 
131 static void set_dcd_val_v1(struct imx_header *imxhdr, char *name, int lineno,
132 					int fld, uint32_t value, uint32_t off)
133 {
134 	dcd_v1_t *dcd_v1 = &imxhdr->header.hdr_v1.dcd_table;
135 
136 	switch (fld) {
137 	case CFG_REG_SIZE:
138 		/* Byte, halfword, word */
139 		if ((value != 1) && (value != 2) && (value != 4)) {
140 			fprintf(stderr, "Error: %s[%d] - "
141 				"Invalid register size " "(%d)\n",
142 				name, lineno, value);
143 			exit(EXIT_FAILURE);
144 		}
145 		dcd_v1->addr_data[off].type = value;
146 		break;
147 	case CFG_REG_ADDRESS:
148 		dcd_v1->addr_data[off].addr = value;
149 		break;
150 	case CFG_REG_VALUE:
151 		dcd_v1->addr_data[off].value = value;
152 		break;
153 	default:
154 		break;
155 
156 	}
157 }
158 
159 static void set_dcd_val_v2(struct imx_header *imxhdr, char *name, int lineno,
160 					int fld, uint32_t value, uint32_t off)
161 {
162 	dcd_v2_t *dcd_v2 = &imxhdr->header.hdr_v2.dcd_table;
163 
164 	switch (fld) {
165 	case CFG_REG_ADDRESS:
166 		dcd_v2->addr_data[off].addr = cpu_to_be32(value);
167 		break;
168 	case CFG_REG_VALUE:
169 		dcd_v2->addr_data[off].value = cpu_to_be32(value);
170 		break;
171 	default:
172 		break;
173 
174 	}
175 }
176 
177 /*
178  * Complete setting up the rest field of DCD of V1
179  * such as barker code and DCD data length.
180  */
181 static void set_dcd_rst_v1(struct imx_header *imxhdr, uint32_t dcd_len,
182 						char *name, int lineno)
183 {
184 	dcd_v1_t *dcd_v1 = &imxhdr->header.hdr_v1.dcd_table;
185 
186 	dcd_v1->preamble.barker = DCD_BARKER;
187 	dcd_v1->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t);
188 }
189 
190 /*
191  * Complete setting up the reset field of DCD of V2
192  * such as DCD tag, version, length, etc.
193  */
194 static void set_dcd_rst_v2(struct imx_header *imxhdr, uint32_t dcd_len,
195 						char *name, int lineno)
196 {
197 	dcd_v2_t *dcd_v2 = &imxhdr->header.hdr_v2.dcd_table;
198 
199 	dcd_v2->header.tag = DCD_HEADER_TAG;
200 	dcd_v2->header.length = cpu_to_be16(
201 			dcd_len * sizeof(dcd_addr_data_t) + 8);
202 	dcd_v2->header.version = DCD_VERSION;
203 	dcd_v2->write_dcd_command.tag = DCD_COMMAND_TAG;
204 	dcd_v2->write_dcd_command.length = cpu_to_be16(
205 			dcd_len * sizeof(dcd_addr_data_t) + 4);
206 	dcd_v2->write_dcd_command.param = DCD_COMMAND_PARAM;
207 }
208 
209 static void set_imx_hdr_v1(struct imx_header *imxhdr, uint32_t dcd_len,
210 		uint32_t entry_point, uint32_t flash_offset)
211 {
212 	imx_header_v1_t *hdr_v1 = &imxhdr->header.hdr_v1;
213 	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
214 	dcd_v1_t *dcd_v1 = &hdr_v1->dcd_table;
215 	uint32_t hdr_base;
216 	uint32_t header_length = (((char *)&dcd_v1->addr_data[dcd_len].addr)
217 			- ((char *)imxhdr));
218 
219 	/* Set magic number */
220 	fhdr_v1->app_code_barker = APP_CODE_BARKER;
221 
222 	/* TODO: check i.MX image V1 handling, for now use 'old' style */
223 	hdr_base = entry_point - 4096;
224 	fhdr_v1->app_dest_ptr = hdr_base - flash_offset;
225 	fhdr_v1->app_code_jump_vector = entry_point;
226 
227 	fhdr_v1->dcd_ptr_ptr = hdr_base + offsetof(flash_header_v1_t, dcd_ptr);
228 	fhdr_v1->dcd_ptr = hdr_base + offsetof(imx_header_v1_t, dcd_table);
229 
230 	/* Security feature are not supported */
231 	fhdr_v1->app_code_csf = 0;
232 	fhdr_v1->super_root_key = 0;
233 	header_size_ptr = (uint32_t *)(((char *)imxhdr) + header_length - 4);
234 }
235 
236 static void set_imx_hdr_v2(struct imx_header *imxhdr, uint32_t dcd_len,
237 		uint32_t entry_point, uint32_t flash_offset)
238 {
239 	imx_header_v2_t *hdr_v2 = &imxhdr->header.hdr_v2;
240 	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
241 	uint32_t hdr_base;
242 
243 	/* Set magic number */
244 	fhdr_v2->header.tag = IVT_HEADER_TAG; /* 0xD1 */
245 	fhdr_v2->header.length = cpu_to_be16(sizeof(flash_header_v2_t));
246 	fhdr_v2->header.version = IVT_VERSION; /* 0x40 */
247 
248 	fhdr_v2->entry = entry_point;
249 	fhdr_v2->reserved1 = fhdr_v2->reserved2 = 0;
250 	hdr_base = entry_point - imximage_init_loadsize +
251 		flash_offset;
252 	fhdr_v2->self = hdr_base;
253 	fhdr_v2->dcd_ptr = hdr_base + offsetof(imx_header_v2_t, dcd_table);
254 	fhdr_v2->boot_data_ptr = hdr_base
255 			+ offsetof(imx_header_v2_t, boot_data);
256 	hdr_v2->boot_data.start = entry_point - imximage_init_loadsize;
257 
258 	fhdr_v2->csf = 0;
259 
260 	header_size_ptr = &hdr_v2->boot_data.size;
261 	csf_ptr = &fhdr_v2->csf;
262 }
263 
264 static void set_hdr_func(void)
265 {
266 	switch (imximage_version) {
267 	case IMXIMAGE_V1:
268 		set_dcd_val = set_dcd_val_v1;
269 		set_dcd_rst = set_dcd_rst_v1;
270 		set_imx_hdr = set_imx_hdr_v1;
271 		max_dcd_entries = MAX_HW_CFG_SIZE_V1;
272 		break;
273 	case IMXIMAGE_V2:
274 		set_dcd_val = set_dcd_val_v2;
275 		set_dcd_rst = set_dcd_rst_v2;
276 		set_imx_hdr = set_imx_hdr_v2;
277 		max_dcd_entries = MAX_HW_CFG_SIZE_V2;
278 		break;
279 	default:
280 		err_imximage_version(imximage_version);
281 		break;
282 	}
283 }
284 
285 static void print_hdr_v1(struct imx_header *imx_hdr)
286 {
287 	imx_header_v1_t *hdr_v1 = &imx_hdr->header.hdr_v1;
288 	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
289 	dcd_v1_t *dcd_v1 = &hdr_v1->dcd_table;
290 	uint32_t size, length, ver;
291 
292 	size = dcd_v1->preamble.length;
293 	if (size > (MAX_HW_CFG_SIZE_V1 * sizeof(dcd_type_addr_data_t))) {
294 		fprintf(stderr,
295 			"Error: Image corrupt DCD size %d exceed maximum %d\n",
296 			(uint32_t)(size / sizeof(dcd_type_addr_data_t)),
297 			MAX_HW_CFG_SIZE_V1);
298 		exit(EXIT_FAILURE);
299 	}
300 
301 	length = dcd_v1->preamble.length / sizeof(dcd_type_addr_data_t);
302 	ver = detect_imximage_version(imx_hdr);
303 
304 	printf("Image Type:   Freescale IMX Boot Image\n");
305 	printf("Image Ver:    %x", ver);
306 	printf("%s\n", get_table_entry_name(imximage_versions, NULL, ver));
307 	printf("Data Size:    ");
308 	genimg_print_size(dcd_v1->addr_data[length].type);
309 	printf("Load Address: %08x\n", (uint32_t)fhdr_v1->app_dest_ptr);
310 	printf("Entry Point:  %08x\n", (uint32_t)fhdr_v1->app_code_jump_vector);
311 }
312 
313 static void print_hdr_v2(struct imx_header *imx_hdr)
314 {
315 	imx_header_v2_t *hdr_v2 = &imx_hdr->header.hdr_v2;
316 	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
317 	dcd_v2_t *dcd_v2 = &hdr_v2->dcd_table;
318 	uint32_t size, version;
319 
320 	size = be16_to_cpu(dcd_v2->header.length) - 8;
321 	if (size > (MAX_HW_CFG_SIZE_V2 * sizeof(dcd_addr_data_t))) {
322 		fprintf(stderr,
323 			"Error: Image corrupt DCD size %d exceed maximum %d\n",
324 			(uint32_t)(size / sizeof(dcd_addr_data_t)),
325 			MAX_HW_CFG_SIZE_V2);
326 		exit(EXIT_FAILURE);
327 	}
328 
329 	version = detect_imximage_version(imx_hdr);
330 
331 	printf("Image Type:   Freescale IMX Boot Image\n");
332 	printf("Image Ver:    %x", version);
333 	printf("%s\n", get_table_entry_name(imximage_versions, NULL, version));
334 	printf("Data Size:    ");
335 	genimg_print_size(hdr_v2->boot_data.size);
336 	printf("Load Address: %08x\n", (uint32_t)fhdr_v2->boot_data_ptr);
337 	printf("Entry Point:  %08x\n", (uint32_t)fhdr_v2->entry);
338 	if (fhdr_v2->csf && (imximage_ivt_offset != UNDEFINED) &&
339 	    (imximage_csf_size != UNDEFINED)) {
340 		printf("HAB Blocks:   %08x %08x %08x\n",
341 		       (uint32_t)fhdr_v2->self, 0,
342 		       hdr_v2->boot_data.size - imximage_ivt_offset -
343 		       imximage_csf_size);
344 	}
345 }
346 
347 static void parse_cfg_cmd(struct imx_header *imxhdr, int32_t cmd, char *token,
348 				char *name, int lineno, int fld, int dcd_len)
349 {
350 	int value;
351 	static int cmd_ver_first = ~0;
352 
353 	switch (cmd) {
354 	case CMD_IMAGE_VERSION:
355 		imximage_version = get_cfg_value(token, name, lineno);
356 		if (cmd_ver_first == 0) {
357 			fprintf(stderr, "Error: %s[%d] - IMAGE_VERSION "
358 				"command need be the first before other "
359 				"valid command in the file\n", name, lineno);
360 			exit(EXIT_FAILURE);
361 		}
362 		cmd_ver_first = 1;
363 		set_hdr_func();
364 		break;
365 	case CMD_BOOT_FROM:
366 		imximage_ivt_offset = get_table_entry_id(imximage_boot_offset,
367 					"imximage boot option", token);
368 		if (imximage_ivt_offset == -1) {
369 			fprintf(stderr, "Error: %s[%d] -Invalid boot device"
370 				"(%s)\n", name, lineno, token);
371 			exit(EXIT_FAILURE);
372 		}
373 
374 		imximage_init_loadsize =
375 			get_table_entry_id(imximage_boot_loadsize,
376 					   "imximage boot option", token);
377 
378 		if (imximage_init_loadsize == -1) {
379 			fprintf(stderr,
380 				"Error: %s[%d] -Invalid boot device(%s)\n",
381 				name, lineno, token);
382 			exit(EXIT_FAILURE);
383 		}
384 
385 		/*
386 		 * The SOC loads from the storage starting at address 0
387 		 * then ensures that the load size contains the offset
388 		 */
389 		if (imximage_init_loadsize < imximage_ivt_offset)
390 			imximage_init_loadsize = imximage_ivt_offset;
391 		if (unlikely(cmd_ver_first != 1))
392 			cmd_ver_first = 0;
393 		break;
394 	case CMD_BOOT_OFFSET:
395 		imximage_ivt_offset = get_cfg_value(token, name, lineno);
396 		if (unlikely(cmd_ver_first != 1))
397 			cmd_ver_first = 0;
398 		break;
399 	case CMD_DATA:
400 		value = get_cfg_value(token, name, lineno);
401 		(*set_dcd_val)(imxhdr, name, lineno, fld, value, dcd_len);
402 		if (unlikely(cmd_ver_first != 1))
403 			cmd_ver_first = 0;
404 		break;
405 	case CMD_CSF:
406 		if (imximage_version != 2) {
407 			fprintf(stderr,
408 				"Error: %s[%d] - CSF only supported for VERSION 2(%s)\n",
409 				name, lineno, token);
410 			exit(EXIT_FAILURE);
411 		}
412 		imximage_csf_size = get_cfg_value(token, name, lineno);
413 		if (unlikely(cmd_ver_first != 1))
414 			cmd_ver_first = 0;
415 		break;
416 	}
417 }
418 
419 static void parse_cfg_fld(struct imx_header *imxhdr, int32_t *cmd,
420 		char *token, char *name, int lineno, int fld, int *dcd_len)
421 {
422 	int value;
423 
424 	switch (fld) {
425 	case CFG_COMMAND:
426 		*cmd = get_table_entry_id(imximage_cmds,
427 			"imximage commands", token);
428 		if (*cmd < 0) {
429 			fprintf(stderr, "Error: %s[%d] - Invalid command"
430 			"(%s)\n", name, lineno, token);
431 			exit(EXIT_FAILURE);
432 		}
433 		break;
434 	case CFG_REG_SIZE:
435 		parse_cfg_cmd(imxhdr, *cmd, token, name, lineno, fld, *dcd_len);
436 		break;
437 	case CFG_REG_ADDRESS:
438 	case CFG_REG_VALUE:
439 		if (*cmd != CMD_DATA)
440 			return;
441 
442 		value = get_cfg_value(token, name, lineno);
443 		(*set_dcd_val)(imxhdr, name, lineno, fld, value, *dcd_len);
444 
445 		if (fld == CFG_REG_VALUE) {
446 			(*dcd_len)++;
447 			if (*dcd_len > max_dcd_entries) {
448 				fprintf(stderr, "Error: %s[%d] -"
449 					"DCD table exceeds maximum size(%d)\n",
450 					name, lineno, max_dcd_entries);
451 				exit(EXIT_FAILURE);
452 			}
453 		}
454 		break;
455 	default:
456 		break;
457 	}
458 }
459 static uint32_t parse_cfg_file(struct imx_header *imxhdr, char *name)
460 {
461 	FILE *fd = NULL;
462 	char *line = NULL;
463 	char *token, *saveptr1, *saveptr2;
464 	int lineno = 0;
465 	int fld;
466 	size_t len;
467 	int dcd_len = 0;
468 	int32_t cmd;
469 
470 	fd = fopen(name, "r");
471 	if (fd == 0) {
472 		fprintf(stderr, "Error: %s - Can't open DCD file\n", name);
473 		exit(EXIT_FAILURE);
474 	}
475 
476 	/*
477 	 * Very simple parsing, line starting with # are comments
478 	 * and are dropped
479 	 */
480 	while ((getline(&line, &len, fd)) > 0) {
481 		lineno++;
482 
483 		token = strtok_r(line, "\r\n", &saveptr1);
484 		if (token == NULL)
485 			continue;
486 
487 		/* Check inside the single line */
488 		for (fld = CFG_COMMAND, cmd = CMD_INVALID,
489 				line = token; ; line = NULL, fld++) {
490 			token = strtok_r(line, " \t", &saveptr2);
491 			if (token == NULL)
492 				break;
493 
494 			/* Drop all text starting with '#' as comments */
495 			if (token[0] == '#')
496 				break;
497 
498 			parse_cfg_fld(imxhdr, &cmd, token, name,
499 					lineno, fld, &dcd_len);
500 		}
501 
502 	}
503 
504 	(*set_dcd_rst)(imxhdr, dcd_len, name, lineno);
505 	fclose(fd);
506 
507 	/* Exit if there is no BOOT_FROM field specifying the flash_offset */
508 	if (imximage_ivt_offset == FLASH_OFFSET_UNDEFINED) {
509 		fprintf(stderr, "Error: No BOOT_FROM tag in %s\n", name);
510 		exit(EXIT_FAILURE);
511 	}
512 	return dcd_len;
513 }
514 
515 
516 static int imximage_check_image_types(uint8_t type)
517 {
518 	if (type == IH_TYPE_IMXIMAGE)
519 		return EXIT_SUCCESS;
520 	else
521 		return EXIT_FAILURE;
522 }
523 
524 static int imximage_verify_header(unsigned char *ptr, int image_size,
525 			struct image_tool_params *params)
526 {
527 	struct imx_header *imx_hdr = (struct imx_header *) ptr;
528 
529 	if (detect_imximage_version(imx_hdr) == IMXIMAGE_VER_INVALID)
530 		return -FDT_ERR_BADSTRUCTURE;
531 
532 	return 0;
533 }
534 
535 static void imximage_print_header(const void *ptr)
536 {
537 	struct imx_header *imx_hdr = (struct imx_header *) ptr;
538 	uint32_t version = detect_imximage_version(imx_hdr);
539 
540 	switch (version) {
541 	case IMXIMAGE_V1:
542 		print_hdr_v1(imx_hdr);
543 		break;
544 	case IMXIMAGE_V2:
545 		print_hdr_v2(imx_hdr);
546 		break;
547 	default:
548 		err_imximage_version(version);
549 		break;
550 	}
551 }
552 
553 static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
554 				struct image_tool_params *params)
555 {
556 	struct imx_header *imxhdr = (struct imx_header *)ptr;
557 	uint32_t dcd_len;
558 
559 	/*
560 	 * In order to not change the old imx cfg file
561 	 * by adding VERSION command into it, here need
562 	 * set up function ptr group to V1 by default.
563 	 */
564 	imximage_version = IMXIMAGE_V1;
565 	/* Be able to detect if the cfg file has no BOOT_FROM tag */
566 	imximage_ivt_offset = FLASH_OFFSET_UNDEFINED;
567 	imximage_csf_size = 0;
568 	set_hdr_func();
569 
570 	/* Parse dcd configuration file */
571 	dcd_len = parse_cfg_file(imxhdr, params->imagename);
572 
573 	if (imximage_version == IMXIMAGE_V2) {
574 		if (imximage_init_loadsize < imximage_ivt_offset +
575 			sizeof(imx_header_v2_t))
576 				imximage_init_loadsize = imximage_ivt_offset +
577 					sizeof(imx_header_v2_t);
578 	}
579 
580 	/* Set the imx header */
581 	(*set_imx_hdr)(imxhdr, dcd_len, params->ep, imximage_ivt_offset);
582 
583 	/*
584 	 * ROM bug alert
585 	 *
586 	 * MX53 only loads 512 byte multiples in case of SD boot.
587 	 * MX53 only loads NAND page multiples in case of NAND boot and
588 	 * supports up to 4096 byte large pages, thus align to 4096.
589 	 *
590 	 * The remaining fraction of a block bytes would not be loaded!
591 	 */
592 	*header_size_ptr = ROUND((sbuf->st_size + imximage_ivt_offset), 4096);
593 
594 	if (csf_ptr && imximage_csf_size) {
595 		*csf_ptr = params->ep - imximage_init_loadsize +
596 			*header_size_ptr;
597 		*header_size_ptr += imximage_csf_size;
598 	}
599 }
600 
601 int imximage_check_params(struct image_tool_params *params)
602 {
603 	if (!params)
604 		return CFG_INVALID;
605 	if (!strlen(params->imagename)) {
606 		fprintf(stderr, "Error: %s - Configuration file not specified, "
607 			"it is needed for imximage generation\n",
608 			params->cmdname);
609 		return CFG_INVALID;
610 	}
611 	/*
612 	 * Check parameters:
613 	 * XIP is not allowed and verify that incompatible
614 	 * parameters are not sent at the same time
615 	 * For example, if list is required a data image must not be provided
616 	 */
617 	return	(params->dflag && (params->fflag || params->lflag)) ||
618 		(params->fflag && (params->dflag || params->lflag)) ||
619 		(params->lflag && (params->dflag || params->fflag)) ||
620 		(params->xflag) || !(strlen(params->imagename));
621 }
622 
623 static int imximage_generate(struct image_tool_params *params,
624 	struct image_type_params *tparams)
625 {
626 	struct imx_header *imxhdr;
627 	size_t alloc_len;
628 	struct stat sbuf;
629 	char *datafile = params->datafile;
630 	uint32_t pad_len;
631 
632 	memset(&imximage_header, 0, sizeof(imximage_header));
633 
634 	/*
635 	 * In order to not change the old imx cfg file
636 	 * by adding VERSION command into it, here need
637 	 * set up function ptr group to V1 by default.
638 	 */
639 	imximage_version = IMXIMAGE_V1;
640 	/* Be able to detect if the cfg file has no BOOT_FROM tag */
641 	imximage_ivt_offset = FLASH_OFFSET_UNDEFINED;
642 	imximage_csf_size = 0;
643 	set_hdr_func();
644 
645 	/* Parse dcd configuration file */
646 	parse_cfg_file(&imximage_header, params->imagename);
647 
648 	/* TODO: check i.MX image V1 handling, for now use 'old' style */
649 	if (imximage_version == IMXIMAGE_V1) {
650 		alloc_len = 4096;
651 	} else {
652 		if (imximage_init_loadsize < imximage_ivt_offset +
653 			sizeof(imx_header_v2_t))
654 				imximage_init_loadsize = imximage_ivt_offset +
655 					sizeof(imx_header_v2_t);
656 		alloc_len = imximage_init_loadsize - imximage_ivt_offset;
657 	}
658 
659 	if (alloc_len < sizeof(struct imx_header)) {
660 		fprintf(stderr, "%s: header error\n",
661 			params->cmdname);
662 		exit(EXIT_FAILURE);
663 	}
664 
665 	imxhdr = malloc(alloc_len);
666 
667 	if (!imxhdr) {
668 		fprintf(stderr, "%s: malloc return failure: %s\n",
669 			params->cmdname, strerror(errno));
670 		exit(EXIT_FAILURE);
671 	}
672 
673 	memset(imxhdr, 0, alloc_len);
674 
675 	tparams->header_size = alloc_len;
676 	tparams->hdr         = imxhdr;
677 
678 	/* determine data image file length */
679 
680 	if (stat(datafile, &sbuf) < 0) {
681 		fprintf(stderr, "%s: Can't stat %s: %s\n",
682 			params->cmdname, datafile, strerror(errno));
683 		exit(EXIT_FAILURE);
684 	}
685 
686 	pad_len = ROUND(sbuf.st_size, 4096) - sbuf.st_size;
687 
688 	/* TODO: check i.MX image V1 handling, for now use 'old' style */
689 	if (imximage_version == IMXIMAGE_V1)
690 		return 0;
691 	else
692 		return pad_len;
693 }
694 
695 
696 /*
697  * imximage parameters
698  */
699 U_BOOT_IMAGE_TYPE(
700 	imximage,
701 	"Freescale i.MX Boot Image support",
702 	0,
703 	NULL,
704 	imximage_check_params,
705 	imximage_verify_header,
706 	imximage_print_header,
707 	imximage_set_header,
708 	NULL,
709 	imximage_check_image_types,
710 	NULL,
711 	imximage_generate
712 );
713