/*
   * (C) Copyright 2009
   * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
   *
   * (C) Copyright 2008
   * Marvell Semiconductor <www.marvell.com>
   * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include "imagetool.h"
  #include <image.h>
  #include "imximage.h"
  
  #define UNDEFINED 0xFFFFFFFF
  
  /*
   * Supported commands for configuration file
   */
  static table_entry_t imximage_cmds[] = {
  	{CMD_BOOT_FROM,         "BOOT_FROM",            "boot command",	  },
  	{CMD_BOOT_OFFSET,       "BOOT_OFFSET",          "Boot offset",	  },
  	{CMD_DATA,              "DATA",                 "Reg Write Data", },
  	{CMD_CSF,               "CSF",           "Command Sequence File", },
  	{CMD_IMAGE_VERSION,     "IMAGE_VERSION",        "image version",  },
  	{-1,                    "",                     "",	          },
  };
  
  /*
   * Supported Boot options for configuration file
   * this is needed to set the correct flash offset
   */
  static table_entry_t imximage_boot_offset[] = {
  	{FLASH_OFFSET_ONENAND,	"onenand",	"OneNAND Flash",},
  	{FLASH_OFFSET_NAND,	"nand",		"NAND Flash",	},
  	{FLASH_OFFSET_NOR,	"nor",		"NOR Flash",	},
  	{FLASH_OFFSET_SATA,	"sata",		"SATA Disk",	},
  	{FLASH_OFFSET_SD,	"sd",		"SD Card",	},
  	{FLASH_OFFSET_SPI,	"spi",		"SPI Flash",	},
  	{FLASH_OFFSET_QSPI,	"qspi",		"QSPI NOR Flash",},
  	{-1,			"",		"Invalid",	},
  };
  
  /*
   * Supported Boot options for configuration file
   * this is needed to determine the initial load size
   */
  static table_entry_t imximage_boot_loadsize[] = {
  	{FLASH_LOADSIZE_ONENAND,	"onenand",	"OneNAND Flash",},
  	{FLASH_LOADSIZE_NAND,		"nand",		"NAND Flash",	},
  	{FLASH_LOADSIZE_NOR,		"nor",		"NOR Flash",	},
  	{FLASH_LOADSIZE_SATA,		"sata",		"SATA Disk",	},
  	{FLASH_LOADSIZE_SD,		"sd",		"SD Card",	},
  	{FLASH_LOADSIZE_SPI,		"spi",		"SPI Flash",	},
  	{FLASH_LOADSIZE_QSPI,		"qspi",		"QSPI NOR Flash",},
  	{-1,				"",		"Invalid",	},
  };
  
  /*
   * IMXIMAGE version definition for i.MX chips
   */
  static table_entry_t imximage_versions[] = {
  	{IMXIMAGE_V1,	"",	" (i.MX25/35/51 compatible)", },
  	{IMXIMAGE_V2,	"",	" (i.MX53/6 compatible)",     },
  	{-1,            "",     " (Invalid)",                 },
  };
  
  static struct imx_header imximage_header;
  static uint32_t imximage_version;
  /*
   * Image Vector Table Offset
   * Initialized to a wrong not 4-bytes aligned address to
   * check if it is was set by the cfg file.
   */
  static uint32_t imximage_ivt_offset = UNDEFINED;
  static uint32_t imximage_csf_size = UNDEFINED;
  /* Initial Load Region Size */
  static uint32_t imximage_init_loadsize;
  
  static set_dcd_val_t set_dcd_val;
  static set_dcd_rst_t set_dcd_rst;
  static set_imx_hdr_t set_imx_hdr;
  static uint32_t max_dcd_entries;
  static uint32_t *header_size_ptr;
  static uint32_t *csf_ptr;
  
  static uint32_t get_cfg_value(char *token, char *name,  int linenr)
  {
  	char *endptr;
  	uint32_t value;
  
  	errno = 0;
  	value = strtoul(token, &endptr, 16);
  	if (errno || (token == endptr)) {
  		fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)
  ",
  			name,  linenr, token);
  		exit(EXIT_FAILURE);
  	}
  	return value;
  }
  
  static uint32_t detect_imximage_version(struct imx_header *imx_hdr)
  {
  	imx_header_v1_t *hdr_v1 = &imx_hdr->header.hdr_v1;
  	imx_header_v2_t *hdr_v2 = &imx_hdr->header.hdr_v2;
  	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
  	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
  
  	/* Try to detect V1 */
  	if ((fhdr_v1->app_code_barker == APP_CODE_BARKER) &&
  		(hdr_v1->dcd_table.preamble.barker == DCD_BARKER))
  		return IMXIMAGE_V1;
  
  	/* Try to detect V2 */
  	if ((fhdr_v2->header.tag == IVT_HEADER_TAG) &&
  		(hdr_v2->dcd_table.header.tag == DCD_HEADER_TAG))
  		return IMXIMAGE_V2;
  
  	return IMXIMAGE_VER_INVALID;
  }
  
  static void err_imximage_version(int version)
  {
  	fprintf(stderr,
  		"Error: Unsupported imximage version:%d
  ", version);
  
  	exit(EXIT_FAILURE);
  }
  
  static void set_dcd_val_v1(struct imx_header *imxhdr, char *name, int lineno,
  					int fld, uint32_t value, uint32_t off)
  {
  	dcd_v1_t *dcd_v1 = &imxhdr->header.hdr_v1.dcd_table;
  
  	switch (fld) {
  	case CFG_REG_SIZE:
  		/* Byte, halfword, word */
  		if ((value != 1) && (value != 2) && (value != 4)) {
  			fprintf(stderr, "Error: %s[%d] - "
  				"Invalid register size " "(%d)
  ",
  				name, lineno, value);
  			exit(EXIT_FAILURE);
  		}
  		dcd_v1->addr_data[off].type = value;
  		break;
  	case CFG_REG_ADDRESS:
  		dcd_v1->addr_data[off].addr = value;
  		break;
  	case CFG_REG_VALUE:
  		dcd_v1->addr_data[off].value = value;
  		break;
  	default:
  		break;
  
  	}
  }
  
  static void set_dcd_val_v2(struct imx_header *imxhdr, char *name, int lineno,
  					int fld, uint32_t value, uint32_t off)
  {
  	dcd_v2_t *dcd_v2 = &imxhdr->header.hdr_v2.dcd_table;
  
  	switch (fld) {
  	case CFG_REG_ADDRESS:
  		dcd_v2->addr_data[off].addr = cpu_to_be32(value);
  		break;
  	case CFG_REG_VALUE:
  		dcd_v2->addr_data[off].value = cpu_to_be32(value);
  		break;
  	default:
  		break;
  
  	}
  }
  
  /*
   * Complete setting up the rest field of DCD of V1
   * such as barker code and DCD data length.
   */
  static void set_dcd_rst_v1(struct imx_header *imxhdr, uint32_t dcd_len,
  						char *name, int lineno)
  {
  	dcd_v1_t *dcd_v1 = &imxhdr->header.hdr_v1.dcd_table;
  
  	dcd_v1->preamble.barker = DCD_BARKER;
  	dcd_v1->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t);
  }
  
  /*
   * Complete setting up the reset field of DCD of V2
   * such as DCD tag, version, length, etc.
   */
  static void set_dcd_rst_v2(struct imx_header *imxhdr, uint32_t dcd_len,
  						char *name, int lineno)
  {
  	dcd_v2_t *dcd_v2 = &imxhdr->header.hdr_v2.dcd_table;
  
  	dcd_v2->header.tag = DCD_HEADER_TAG;
  	dcd_v2->header.length = cpu_to_be16(
  			dcd_len * sizeof(dcd_addr_data_t) + 8);
  	dcd_v2->header.version = DCD_VERSION;
  	dcd_v2->write_dcd_command.tag = DCD_COMMAND_TAG;
  	dcd_v2->write_dcd_command.length = cpu_to_be16(
  			dcd_len * sizeof(dcd_addr_data_t) + 4);
  	dcd_v2->write_dcd_command.param = DCD_COMMAND_PARAM;
  }
  
  static void set_imx_hdr_v1(struct imx_header *imxhdr, uint32_t dcd_len,
  		uint32_t entry_point, uint32_t flash_offset)
  {
  	imx_header_v1_t *hdr_v1 = &imxhdr->header.hdr_v1;
  	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
  	dcd_v1_t *dcd_v1 = &hdr_v1->dcd_table;
  	uint32_t hdr_base;
  	uint32_t header_length = (((char *)&dcd_v1->addr_data[dcd_len].addr)
  			- ((char *)imxhdr));
  
  	/* Set magic number */
  	fhdr_v1->app_code_barker = APP_CODE_BARKER;
  
  	/* TODO: check i.MX image V1 handling, for now use 'old' style */
  	hdr_base = entry_point - 4096;
  	fhdr_v1->app_dest_ptr = hdr_base - flash_offset;
  	fhdr_v1->app_code_jump_vector = entry_point;
  
  	fhdr_v1->dcd_ptr_ptr = hdr_base + offsetof(flash_header_v1_t, dcd_ptr);
  	fhdr_v1->dcd_ptr = hdr_base + offsetof(imx_header_v1_t, dcd_table);
  
  	/* Security feature are not supported */
  	fhdr_v1->app_code_csf = 0;
  	fhdr_v1->super_root_key = 0;
  	header_size_ptr = (uint32_t *)(((char *)imxhdr) + header_length - 4);
  }
  
  static void set_imx_hdr_v2(struct imx_header *imxhdr, uint32_t dcd_len,
  		uint32_t entry_point, uint32_t flash_offset)
  {
  	imx_header_v2_t *hdr_v2 = &imxhdr->header.hdr_v2;
  	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
  	uint32_t hdr_base;
  
  	/* Set magic number */
  	fhdr_v2->header.tag = IVT_HEADER_TAG; /* 0xD1 */
  	fhdr_v2->header.length = cpu_to_be16(sizeof(flash_header_v2_t));
  	fhdr_v2->header.version = IVT_VERSION; /* 0x40 */
  
  	fhdr_v2->entry = entry_point;
  	fhdr_v2->reserved1 = fhdr_v2->reserved2 = 0;
  	hdr_base = entry_point - imximage_init_loadsize +
  		flash_offset;
  	fhdr_v2->self = hdr_base;
  	fhdr_v2->dcd_ptr = hdr_base + offsetof(imx_header_v2_t, dcd_table);
  	fhdr_v2->boot_data_ptr = hdr_base
  			+ offsetof(imx_header_v2_t, boot_data);
  	hdr_v2->boot_data.start = entry_point - imximage_init_loadsize;
  
  	fhdr_v2->csf = 0;
  
  	header_size_ptr = &hdr_v2->boot_data.size;
  	csf_ptr = &fhdr_v2->csf;
  }
  
  static void set_hdr_func(void)
  {
  	switch (imximage_version) {
  	case IMXIMAGE_V1:
  		set_dcd_val = set_dcd_val_v1;
  		set_dcd_rst = set_dcd_rst_v1;
  		set_imx_hdr = set_imx_hdr_v1;
  		max_dcd_entries = MAX_HW_CFG_SIZE_V1;
  		break;
  	case IMXIMAGE_V2:
  		set_dcd_val = set_dcd_val_v2;
  		set_dcd_rst = set_dcd_rst_v2;
  		set_imx_hdr = set_imx_hdr_v2;
  		max_dcd_entries = MAX_HW_CFG_SIZE_V2;
  		break;
  	default:
  		err_imximage_version(imximage_version);
  		break;
  	}
  }
  
  static void print_hdr_v1(struct imx_header *imx_hdr)
  {
  	imx_header_v1_t *hdr_v1 = &imx_hdr->header.hdr_v1;
  	flash_header_v1_t *fhdr_v1 = &hdr_v1->fhdr;
  	dcd_v1_t *dcd_v1 = &hdr_v1->dcd_table;
  	uint32_t size, length, ver;
  
  	size = dcd_v1->preamble.length;
  	if (size > (MAX_HW_CFG_SIZE_V1 * sizeof(dcd_type_addr_data_t))) {
  		fprintf(stderr,
  			"Error: Image corrupt DCD size %d exceed maximum %d
  ",
  			(uint32_t)(size / sizeof(dcd_type_addr_data_t)),
  			MAX_HW_CFG_SIZE_V1);
  		exit(EXIT_FAILURE);
  	}
  
  	length = dcd_v1->preamble.length / sizeof(dcd_type_addr_data_t);
  	ver = detect_imximage_version(imx_hdr);
  
  	printf("Image Type:   Freescale IMX Boot Image
  ");
  	printf("Image Ver:    %x", ver);
  	printf("%s
  ", get_table_entry_name(imximage_versions, NULL, ver));
  	printf("Data Size:    ");
  	genimg_print_size(dcd_v1->addr_data[length].type);
  	printf("Load Address: %08x
  ", (uint32_t)fhdr_v1->app_dest_ptr);
  	printf("Entry Point:  %08x
  ", (uint32_t)fhdr_v1->app_code_jump_vector);
  }
  
  static void print_hdr_v2(struct imx_header *imx_hdr)
  {
  	imx_header_v2_t *hdr_v2 = &imx_hdr->header.hdr_v2;
  	flash_header_v2_t *fhdr_v2 = &hdr_v2->fhdr;
  	dcd_v2_t *dcd_v2 = &hdr_v2->dcd_table;
  	uint32_t size, version;
  
  	size = be16_to_cpu(dcd_v2->header.length) - 8;
  	if (size > (MAX_HW_CFG_SIZE_V2 * sizeof(dcd_addr_data_t))) {
  		fprintf(stderr,
  			"Error: Image corrupt DCD size %d exceed maximum %d
  ",
  			(uint32_t)(size / sizeof(dcd_addr_data_t)),
  			MAX_HW_CFG_SIZE_V2);
  		exit(EXIT_FAILURE);
  	}
  
  	version = detect_imximage_version(imx_hdr);
  
  	printf("Image Type:   Freescale IMX Boot Image
  ");
  	printf("Image Ver:    %x", version);
  	printf("%s
  ", get_table_entry_name(imximage_versions, NULL, version));
  	printf("Data Size:    ");
  	genimg_print_size(hdr_v2->boot_data.size);
  	printf("Load Address: %08x
  ", (uint32_t)fhdr_v2->boot_data_ptr);
  	printf("Entry Point:  %08x
  ", (uint32_t)fhdr_v2->entry);
  	if (fhdr_v2->csf && (imximage_ivt_offset != UNDEFINED) &&
  	    (imximage_csf_size != UNDEFINED)) {
  		printf("HAB Blocks:   %08x %08x %08x
  ",
  		       (uint32_t)fhdr_v2->self, 0,
  		       hdr_v2->boot_data.size - imximage_ivt_offset -
  		       imximage_csf_size);
  	}
  }
  
  static void parse_cfg_cmd(struct imx_header *imxhdr, int32_t cmd, char *token,
  				char *name, int lineno, int fld, int dcd_len)
  {
  	int value;
  	static int cmd_ver_first = ~0;
  
  	switch (cmd) {
  	case CMD_IMAGE_VERSION:
  		imximage_version = get_cfg_value(token, name, lineno);
  		if (cmd_ver_first == 0) {
  			fprintf(stderr, "Error: %s[%d] - IMAGE_VERSION "
  				"command need be the first before other "
  				"valid command in the file
  ", name, lineno);
  			exit(EXIT_FAILURE);
  		}
  		cmd_ver_first = 1;
  		set_hdr_func();
  		break;
  	case CMD_BOOT_FROM:
  		imximage_ivt_offset = get_table_entry_id(imximage_boot_offset,
  					"imximage boot option", token);
  		if (imximage_ivt_offset == -1) {
  			fprintf(stderr, "Error: %s[%d] -Invalid boot device"
  				"(%s)
  ", name, lineno, token);
  			exit(EXIT_FAILURE);
  		}
  
  		imximage_init_loadsize =
  			get_table_entry_id(imximage_boot_loadsize,
  					   "imximage boot option", token);
  
  		if (imximage_init_loadsize == -1) {
  			fprintf(stderr,
  				"Error: %s[%d] -Invalid boot device(%s)
  ",
  				name, lineno, token);
  			exit(EXIT_FAILURE);
  		}
  
  		/*
  		 * The SOC loads from the storage starting at address 0
  		 * then ensures that the load size contains the offset
  		 */
  		if (imximage_init_loadsize < imximage_ivt_offset)
  			imximage_init_loadsize = imximage_ivt_offset;
  		if (unlikely(cmd_ver_first != 1))
  			cmd_ver_first = 0;
  		break;
  	case CMD_BOOT_OFFSET:
  		imximage_ivt_offset = get_cfg_value(token, name, lineno);
  		if (unlikely(cmd_ver_first != 1))
  			cmd_ver_first = 0;
  		break;
  	case CMD_DATA:
  		value = get_cfg_value(token, name, lineno);
  		(*set_dcd_val)(imxhdr, name, lineno, fld, value, dcd_len);
  		if (unlikely(cmd_ver_first != 1))
  			cmd_ver_first = 0;
  		break;
  	case CMD_CSF:
  		if (imximage_version != 2) {
  			fprintf(stderr,
  				"Error: %s[%d] - CSF only supported for VERSION 2(%s)
  ",
  				name, lineno, token);
  			exit(EXIT_FAILURE);
  		}
  		imximage_csf_size = get_cfg_value(token, name, lineno);
  		if (unlikely(cmd_ver_first != 1))
  			cmd_ver_first = 0;
  		break;
  	}
  }
  
  static void parse_cfg_fld(struct imx_header *imxhdr, int32_t *cmd,
  		char *token, char *name, int lineno, int fld, int *dcd_len)
  {
  	int value;
  
  	switch (fld) {
  	case CFG_COMMAND:
  		*cmd = get_table_entry_id(imximage_cmds,
  			"imximage commands", token);
  		if (*cmd < 0) {
  			fprintf(stderr, "Error: %s[%d] - Invalid command"
  			"(%s)
  ", name, lineno, token);
  			exit(EXIT_FAILURE);
  		}
  		break;
  	case CFG_REG_SIZE:
  		parse_cfg_cmd(imxhdr, *cmd, token, name, lineno, fld, *dcd_len);
  		break;
  	case CFG_REG_ADDRESS:
  	case CFG_REG_VALUE:
  		if (*cmd != CMD_DATA)
  			return;
  
  		value = get_cfg_value(token, name, lineno);
  		(*set_dcd_val)(imxhdr, name, lineno, fld, value, *dcd_len);
  
  		if (fld == CFG_REG_VALUE) {
  			(*dcd_len)++;
  			if (*dcd_len > max_dcd_entries) {
  				fprintf(stderr, "Error: %s[%d] -"
  					"DCD table exceeds maximum size(%d)
  ",
  					name, lineno, max_dcd_entries);
  				exit(EXIT_FAILURE);
  			}
  		}
  		break;
  	default:
  		break;
  	}
  }
  static uint32_t parse_cfg_file(struct imx_header *imxhdr, char *name)
  {
  	FILE *fd = NULL;
  	char *line = NULL;
  	char *token, *saveptr1, *saveptr2;
  	int lineno = 0;
  	int fld;
  	size_t len;
  	int dcd_len = 0;
  	int32_t cmd;
  
  	fd = fopen(name, "r");
  	if (fd == 0) {
  		fprintf(stderr, "Error: %s - Can't open DCD file
  ", name);
  		exit(EXIT_FAILURE);
  	}
  
  	/*
  	 * Very simple parsing, line starting with # are comments
  	 * and are dropped
  	 */
  	while ((getline(&line, &len, fd)) > 0) {
  		lineno++;
  
  		token = strtok_r(line, "\r
  ", &saveptr1);
  		if (token == NULL)
  			continue;
  
  		/* Check inside the single line */
  		for (fld = CFG_COMMAND, cmd = CMD_INVALID,
  				line = token; ; line = NULL, fld++) {
  			token = strtok_r(line, " \t", &saveptr2);
  			if (token == NULL)
  				break;
  
  			/* Drop all text starting with '#' as comments */
  			if (token[0] == '#')
  				break;
  
  			parse_cfg_fld(imxhdr, &cmd, token, name,
  					lineno, fld, &dcd_len);
  		}
  
  	}
  
  	(*set_dcd_rst)(imxhdr, dcd_len, name, lineno);
  	fclose(fd);
  
  	/* Exit if there is no BOOT_FROM field specifying the flash_offset */
  	if (imximage_ivt_offset == FLASH_OFFSET_UNDEFINED) {
  		fprintf(stderr, "Error: No BOOT_FROM tag in %s
  ", name);
  		exit(EXIT_FAILURE);
  	}
  	return dcd_len;
  }
  
  
  static int imximage_check_image_types(uint8_t type)
  {
  	if (type == IH_TYPE_IMXIMAGE)
  		return EXIT_SUCCESS;
  	else
  		return EXIT_FAILURE;
  }
  
  static int imximage_verify_header(unsigned char *ptr, int image_size,
  			struct image_tool_params *params)
  {
  	struct imx_header *imx_hdr = (struct imx_header *) ptr;
  
  	if (detect_imximage_version(imx_hdr) == IMXIMAGE_VER_INVALID)
  		return -FDT_ERR_BADSTRUCTURE;
  
  	return 0;
  }
  
  static void imximage_print_header(const void *ptr)
  {
  	struct imx_header *imx_hdr = (struct imx_header *) ptr;
  	uint32_t version = detect_imximage_version(imx_hdr);
  
  	switch (version) {
  	case IMXIMAGE_V1:
  		print_hdr_v1(imx_hdr);
  		break;
  	case IMXIMAGE_V2:
  		print_hdr_v2(imx_hdr);
  		break;
  	default:
  		err_imximage_version(version);
  		break;
  	}
  }
  
  static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
  				struct image_tool_params *params)
  {
  	struct imx_header *imxhdr = (struct imx_header *)ptr;
  	uint32_t dcd_len;
  
  	/*
  	 * In order to not change the old imx cfg file
  	 * by adding VERSION command into it, here need
  	 * set up function ptr group to V1 by default.
  	 */
  	imximage_version = IMXIMAGE_V1;
  	/* Be able to detect if the cfg file has no BOOT_FROM tag */
  	imximage_ivt_offset = FLASH_OFFSET_UNDEFINED;
  	imximage_csf_size = 0;
  	set_hdr_func();
  
  	/* Parse dcd configuration file */
  	dcd_len = parse_cfg_file(imxhdr, params->imagename);
  
  	if (imximage_version == IMXIMAGE_V2) {
  		if (imximage_init_loadsize < imximage_ivt_offset +
  			sizeof(imx_header_v2_t))
  				imximage_init_loadsize = imximage_ivt_offset +
  					sizeof(imx_header_v2_t);
  	}
  
  	/* Set the imx header */
  	(*set_imx_hdr)(imxhdr, dcd_len, params->ep, imximage_ivt_offset);
  
  	/*
  	 * ROM bug alert
  	 *
  	 * MX53 only loads 512 byte multiples in case of SD boot.
  	 * MX53 only loads NAND page multiples in case of NAND boot and
  	 * supports up to 4096 byte large pages, thus align to 4096.
  	 *
  	 * The remaining fraction of a block bytes would not be loaded!
  	 */
  	*header_size_ptr = ROUND((sbuf->st_size + imximage_ivt_offset), 4096);
  
  	if (csf_ptr && imximage_csf_size) {
  		*csf_ptr = params->ep - imximage_init_loadsize +
  			*header_size_ptr;
  		*header_size_ptr += imximage_csf_size;
  	}
  }
  
  int imximage_check_params(struct image_tool_params *params)
  {
  	if (!params)
  		return CFG_INVALID;
  	if (!strlen(params->imagename)) {
  		fprintf(stderr, "Error: %s - Configuration file not specified, "
  			"it is needed for imximage generation
  ",
  			params->cmdname);
  		return CFG_INVALID;
  	}
  	/*
  	 * Check parameters:
  	 * XIP is not allowed and verify that incompatible
  	 * parameters are not sent at the same time
  	 * For example, if list is required a data image must not be provided
  	 */
  	return	(params->dflag && (params->fflag || params->lflag)) ||
  		(params->fflag && (params->dflag || params->lflag)) ||
  		(params->lflag && (params->dflag || params->fflag)) ||
  		(params->xflag) || !(strlen(params->imagename));
  }
  
  static int imximage_generate(struct image_tool_params *params,
  	struct image_type_params *tparams)
  {
  	struct imx_header *imxhdr;
  	size_t alloc_len;
  	struct stat sbuf;
  	char *datafile = params->datafile;
  	uint32_t pad_len;
  
  	memset(&imximage_header, 0, sizeof(imximage_header));
  
  	/*
  	 * In order to not change the old imx cfg file
  	 * by adding VERSION command into it, here need
  	 * set up function ptr group to V1 by default.
  	 */
  	imximage_version = IMXIMAGE_V1;
  	/* Be able to detect if the cfg file has no BOOT_FROM tag */
  	imximage_ivt_offset = FLASH_OFFSET_UNDEFINED;
  	imximage_csf_size = 0;
  	set_hdr_func();
  
  	/* Parse dcd configuration file */
  	parse_cfg_file(&imximage_header, params->imagename);
  
  	/* TODO: check i.MX image V1 handling, for now use 'old' style */
  	if (imximage_version == IMXIMAGE_V1) {
  		alloc_len = 4096;
  	} else {
  		if (imximage_init_loadsize < imximage_ivt_offset +
  			sizeof(imx_header_v2_t))
  				imximage_init_loadsize = imximage_ivt_offset +
  					sizeof(imx_header_v2_t);
  		alloc_len = imximage_init_loadsize - imximage_ivt_offset;
  	}
  
  	if (alloc_len < sizeof(struct imx_header)) {
  		fprintf(stderr, "%s: header error
  ",
  			params->cmdname);
  		exit(EXIT_FAILURE);
  	}
  
  	imxhdr = malloc(alloc_len);
  
  	if (!imxhdr) {
  		fprintf(stderr, "%s: malloc return failure: %s
  ",
  			params->cmdname, strerror(errno));
  		exit(EXIT_FAILURE);
  	}
  
  	memset(imxhdr, 0, alloc_len);
  
  	tparams->header_size = alloc_len;
  	tparams->hdr         = imxhdr;
  
  	/* determine data image file length */
  
  	if (stat(datafile, &sbuf) < 0) {
  		fprintf(stderr, "%s: Can't stat %s: %s
  ",
  			params->cmdname, datafile, strerror(errno));
  		exit(EXIT_FAILURE);
  	}
  
  	pad_len = ROUND(sbuf.st_size, 4096) - sbuf.st_size;
  
  	/* TODO: check i.MX image V1 handling, for now use 'old' style */
  	if (imximage_version == IMXIMAGE_V1)
  		return 0;
  	else
  		return pad_len;
  }
  
  
  /*
   * imximage parameters
   */
  U_BOOT_IMAGE_TYPE(
  	imximage,
  	"Freescale i.MX Boot Image support",
  	0,
  	NULL,
  	imximage_check_params,
  	imximage_verify_header,
  	imximage_print_header,
  	imximage_set_header,
  	NULL,
  	imximage_check_image_types,
  	NULL,
  	imximage_generate
  );