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bootloader/u-boot_2015_04/tools/lpc32xximage.c 4.35 KB
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  /*
   * Image manipulator for LPC32XX SoCs
   *
   * (C) Copyright 2015  DENX Software Engineering GmbH
   * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
   *
   * Derived from omapimage.c:
   *
   * (C) Copyright 2010
   * Linaro LTD, www.linaro.org
   * Author: John Rigby <john.rigby@linaro.org>
   * Based on TI's signGP.c
   *
   * (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 <compiler.h>
  #include <image.h>
  
  /*
   * NAND page 0 boot header
   */
  
  struct nand_page_0_boot_header {
  	uint32_t data[129];
  	uint32_t pad[383];
  };
  
  /*
   * Default ICC (interface configuration data [sic]) if none specified
   * in board config
   */
  
  #ifndef LPC32XX_BOOT_ICR
  #define LPC32XX_BOOT_ICR 0x00000096
  #endif
  
  /*
   * Default boot NAND page size if none specified in board config
   */
  
  #ifndef LPC32XX_BOOT_NAND_PAGESIZE
  #define LPC32XX_BOOT_NAND_PAGESIZE 2048
  #endif
  
  /*
   * Default boot NAND pages per sector if none specified in board config
   */
  
  #ifndef LPC32XX_BOOT_NAND_PAGES_PER_SECTOR
  #define LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 64
  #endif
  
  /*
   * Maximum size for boot code is 56K unless defined in board config
   */
  
  #ifndef LPC32XX_BOOT_CODESIZE
  #define LPC32XX_BOOT_CODESIZE (56*1024)
  #endif
  
  /* signature byte for a readable block */
  
  #define LPC32XX_BOOT_BLOCK_OK 0xaa
  
  static struct nand_page_0_boot_header lpc32xximage_header;
  
  static int lpc32xximage_check_image_types(uint8_t type)
  {
  	if (type == IH_TYPE_LPC32XXIMAGE)
  		return EXIT_SUCCESS;
  	return EXIT_FAILURE;
  }
  
  static int lpc32xximage_verify_header(unsigned char *ptr, int image_size,
  			struct image_tool_params *params)
  {
  	struct nand_page_0_boot_header *hdr =
  		(struct nand_page_0_boot_header *)ptr;
  
  	/* turn image size from bytes to NAND pages, page 0 included */
  	int image_size_in_pages = ((image_size - 1)
  				  / LPC32XX_BOOT_NAND_PAGESIZE);
  
  	if (hdr->data[0] != (0xff & LPC32XX_BOOT_ICR))
  		return -1;
  	if (hdr->data[1] != (0xff & ~LPC32XX_BOOT_ICR))
  		return -1;
  	if (hdr->data[2] != (0xff & LPC32XX_BOOT_ICR))
  		return -1;
  	if (hdr->data[3] != (0xff & ~LPC32XX_BOOT_ICR))
  		return -1;
  	if (hdr->data[4] != (0xff & image_size_in_pages))
  		return -1;
  	if (hdr->data[5] != (0xff & ~image_size_in_pages))
  		return -1;
  	if (hdr->data[6] != (0xff & image_size_in_pages))
  		return -1;
  	if (hdr->data[7] != (0xff & ~image_size_in_pages))
  		return -1;
  	if (hdr->data[8] != (0xff & image_size_in_pages))
  		return -1;
  	if (hdr->data[9] != (0xff & ~image_size_in_pages))
  		return -1;
  	if (hdr->data[10] != (0xff & image_size_in_pages))
  		return -1;
  	if (hdr->data[11] != (0xff & ~image_size_in_pages))
  		return -1;
  	if (hdr->data[12] != LPC32XX_BOOT_BLOCK_OK)
  		return -1;
  	if (hdr->data[128] != LPC32XX_BOOT_BLOCK_OK)
  		return -1;
  	return 0;
  }
  
  static void print_hdr_byte(struct nand_page_0_boot_header *hdr, int ofs)
  {
  	printf("header[%d] = %02x
  ", ofs, hdr->data[ofs]);
  }
  
  static void lpc32xximage_print_header(const void *ptr)
  {
  	struct nand_page_0_boot_header *hdr =
  		(struct nand_page_0_boot_header *)ptr;
  	int ofs;
  
  	for (ofs = 0; ofs <= 12; ofs++)
  		print_hdr_byte(hdr, ofs);
  	print_hdr_byte(hdr, 128);
  }
  
  static void lpc32xximage_set_header(void *ptr, struct stat *sbuf, int ifd,
  				struct image_tool_params *params)
  {
  	struct nand_page_0_boot_header *hdr =
  		(struct nand_page_0_boot_header *)ptr;
  
  	/* turn image size from bytes to NAND pages, page 0 included */
  	int image_size_in_pages = ((sbuf->st_size
  				  + LPC32XX_BOOT_NAND_PAGESIZE - 1)
  				  / LPC32XX_BOOT_NAND_PAGESIZE);
  
  	/* fill header -- default byte value is 0x00, not 0xFF */
  	memset((void *)hdr, 0, sizeof(*hdr));
  	hdr->data[0] = (hdr->data[2] = 0xff & LPC32XX_BOOT_ICR);
  	hdr->data[1] = (hdr->data[3] = 0xff & ~LPC32XX_BOOT_ICR);
  	hdr->data[4] = (hdr->data[6] = (hdr->data[8]
  		       = (hdr->data[10] = 0xff & image_size_in_pages)));
  	hdr->data[5] = (hdr->data[7] = (hdr->data[9]
  		       = (hdr->data[11] = 0xff & ~image_size_in_pages)));
  	hdr->data[12] = (hdr->data[128] = LPC32XX_BOOT_BLOCK_OK);
  }
  
  /*
   * lpc32xximage parameters
   */
  U_BOOT_IMAGE_TYPE(
  	lpc32xximage,
  	"LPC32XX Boot Image",
  	sizeof(lpc32xximage_header),
  	(void *)&lpc32xximage_header,
  	NULL,
  	lpc32xximage_verify_header,
  	lpc32xximage_print_header,
  	lpc32xximage_set_header,
  	NULL,
  	lpc32xximage_check_image_types,
  	NULL,
  	NULL
  );