#ifndef __LINUX_BCM963XX_TAG_H__
  #define __LINUX_BCM963XX_TAG_H__
  
  #include <linux/types.h>

  
  #define TAGVER_LEN		4	/* Length of Tag Version */
  #define TAGLAYOUT_LEN		4	/* Length of FlashLayoutVer */
  #define SIG1_LEN		20	/* Company Signature 1 Length */

  #define SIG2_LEN		14	/* Company Signature 2 Length */

  #define BOARDID_LEN		16	/* Length of BoardId */
  #define ENDIANFLAG_LEN		2	/* Endian Flag Length */
  #define CHIPID_LEN		6	/* Chip Id Length */
  #define IMAGE_LEN		10	/* Length of Length Field */
  #define ADDRESS_LEN		12	/* Length of Address field */

  #define IMAGE_SEQUENCE_LEN	4	/* Image sequence Length */

  #define RSASIG_LEN		20	/* Length of RSA Signature in tag */
  #define TAGINFO1_LEN		30	/* Length of vendor information field1 in tag */
  #define FLASHLAYOUTVER_LEN	4	/* Length of Flash Layout Version String tag */
  #define TAGINFO2_LEN		16	/* Length of vendor information field2 in tag */

  #define ALTTAGINFO_LEN		54	/* Alternate length for vendor information; Pirelli */
  
  #define NUM_PIRELLI		2
  #define IMAGETAG_CRC_START	0xFFFFFFFF
  
  #define PIRELLI_BOARDS { \
  	"AGPF-S0", \
  	"DWV-S0", \
  }

  /* Extended flash address, needs to be subtracted
   * from bcm_tag flash image offsets.
   */
  #define BCM963XX_EXTENDED_SIZE	0xBFC00000

  /*
   * The broadcom firmware assumes the rootfs starts the image,
   * therefore uses the rootfs start (flash_image_address)
   * to determine where to flash the image.  Since we have the kernel first
   * we have to give it the kernel address, but the crc uses the length
   * associated with this address (root_length), which is added to the kernel
   * length (kernel_length) to determine the length of image to flash and thus
   * needs to be rootfs + deadcode (jffs2 EOF marker)
  */
  
  struct bcm_tag {
  	/* 0-3: Version of the image tag */
  	char tag_version[TAGVER_LEN];
  	/* 4-23: Company Line 1 */
  	char sig_1[SIG1_LEN];
  	/*  24-37: Company Line 2 */
  	char sig_2[SIG2_LEN];
  	/* 38-43: Chip this image is for */
  	char chip_id[CHIPID_LEN];
  	/* 44-59: Board name */
  	char board_id[BOARDID_LEN];
  	/* 60-61: Map endianness -- 1 BE 0 LE */
  	char big_endian[ENDIANFLAG_LEN];
  	/* 62-71: Total length of image */
  	char total_length[IMAGE_LEN];
  	/* 72-83: Address in memory of CFE */
  	char cfe__address[ADDRESS_LEN];
  	/* 84-93: Size of CFE */
  	char cfe_length[IMAGE_LEN];
  	/* 94-105: Address in memory of image start
  	 * (kernel for OpenWRT, rootfs for stock firmware)
  	 */
  	char flash_image_start[ADDRESS_LEN];
  	/* 106-115: Size of rootfs */
  	char root_length[IMAGE_LEN];
  	/* 116-127: Address in memory of kernel */
  	char kernel_address[ADDRESS_LEN];
  	/* 128-137: Size of kernel */
  	char kernel_length[IMAGE_LEN];

  	/* 138-141: Image sequence number
  	 * (to be incremented when flashed with a new image)
  	 */
  	char image_sequence[IMAGE_SEQUENCE_LEN];

  	/* 142-161: RSA Signature (not used; some vendors may use this) */
  	char rsa_signature[RSASIG_LEN];
  	/* 162-191: Compilation and related information (not used in OpenWrt) */
  	char information1[TAGINFO1_LEN];
  	/* 192-195: Version flash layout */
  	char flash_layout_ver[FLASHLAYOUTVER_LEN];
  	/* 196-199: kernel+rootfs CRC32 */

  	__u32 fskernel_crc;

  	/* 200-215: Unused except on Alice Gate where is is information */
  	char information2[TAGINFO2_LEN];
  	/* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */

  	__u32 image_crc;

  	/* 220-223: CRC32 of rootfs partition */

  	__u32 rootfs_crc;

  	/* 224-227: CRC32 of kernel partition */

  	__u32 kernel_crc;

  	/* 228-235: Unused at present */
  	char reserved1[8];

  	/* 236-239: CRC32 of header excluding last 20 bytes */

  	__u32 header_crc;

  	/* 240-255: Unused at present */
  	char reserved2[16];
  };

  #endif /* __LINUX_BCM63XX_TAG_H__ */