1#ifndef __LINUX_BCM963XX_TAG_H__ 2#define __LINUX_BCM963XX_TAG_H__ 3 4#include <linux/types.h> 5 6#define TAGVER_LEN 4 /* Length of Tag Version */ 7#define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */ 8#define SIG1_LEN 20 /* Company Signature 1 Length */ 9#define SIG2_LEN 14 /* Company Signature 2 Length */ 10#define BOARDID_LEN 16 /* Length of BoardId */ 11#define ENDIANFLAG_LEN 2 /* Endian Flag Length */ 12#define CHIPID_LEN 6 /* Chip Id Length */ 13#define IMAGE_LEN 10 /* Length of Length Field */ 14#define ADDRESS_LEN 12 /* Length of Address field */ 15#define IMAGE_SEQUENCE_LEN 4 /* Image sequence Length */ 16#define RSASIG_LEN 20 /* Length of RSA Signature in tag */ 17#define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */ 18#define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */ 19#define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */ 20#define ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */ 21 22#define NUM_PIRELLI 2 23#define IMAGETAG_CRC_START 0xFFFFFFFF 24 25#define PIRELLI_BOARDS { \ 26 "AGPF-S0", \ 27 "DWV-S0", \ 28} 29 30/* Extended flash address, needs to be subtracted 31 * from bcm_tag flash image offsets. 32 */ 33#define BCM963XX_EXTENDED_SIZE 0xBFC00000 34 35/* 36 * The broadcom firmware assumes the rootfs starts the image, 37 * therefore uses the rootfs start (flash_image_address) 38 * to determine where to flash the image. Since we have the kernel first 39 * we have to give it the kernel address, but the crc uses the length 40 * associated with this address (root_length), which is added to the kernel 41 * length (kernel_length) to determine the length of image to flash and thus 42 * needs to be rootfs + deadcode (jffs2 EOF marker) 43*/ 44 45struct bcm_tag { 46 /* 0-3: Version of the image tag */ 47 char tag_version[TAGVER_LEN]; 48 /* 4-23: Company Line 1 */ 49 char sig_1[SIG1_LEN]; 50 /* 24-37: Company Line 2 */ 51 char sig_2[SIG2_LEN]; 52 /* 38-43: Chip this image is for */ 53 char chip_id[CHIPID_LEN]; 54 /* 44-59: Board name */ 55 char board_id[BOARDID_LEN]; 56 /* 60-61: Map endianness -- 1 BE 0 LE */ 57 char big_endian[ENDIANFLAG_LEN]; 58 /* 62-71: Total length of image */ 59 char total_length[IMAGE_LEN]; 60 /* 72-83: Address in memory of CFE */ 61 char cfe__address[ADDRESS_LEN]; 62 /* 84-93: Size of CFE */ 63 char cfe_length[IMAGE_LEN]; 64 /* 94-105: Address in memory of image start 65 * (kernel for OpenWRT, rootfs for stock firmware) 66 */ 67 char flash_image_start[ADDRESS_LEN]; 68 /* 106-115: Size of rootfs */ 69 char root_length[IMAGE_LEN]; 70 /* 116-127: Address in memory of kernel */ 71 char kernel_address[ADDRESS_LEN]; 72 /* 128-137: Size of kernel */ 73 char kernel_length[IMAGE_LEN]; 74 /* 138-141: Image sequence number 75 * (to be incremented when flashed with a new image) 76 */ 77 char image_sequence[IMAGE_SEQUENCE_LEN]; 78 /* 142-161: RSA Signature (not used; some vendors may use this) */ 79 char rsa_signature[RSASIG_LEN]; 80 /* 162-191: Compilation and related information (not used in OpenWrt) */ 81 char information1[TAGINFO1_LEN]; 82 /* 192-195: Version flash layout */ 83 char flash_layout_ver[FLASHLAYOUTVER_LEN]; 84 /* 196-199: kernel+rootfs CRC32 */ 85 __u32 fskernel_crc; 86 /* 200-215: Unused except on Alice Gate where is is information */ 87 char information2[TAGINFO2_LEN]; 88 /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */ 89 __u32 image_crc; 90 /* 220-223: CRC32 of rootfs partition */ 91 __u32 rootfs_crc; 92 /* 224-227: CRC32 of kernel partition */ 93 __u32 kernel_crc; 94 /* 228-235: Unused at present */ 95 char reserved1[8]; 96 /* 236-239: CRC32 of header excluding last 20 bytes */ 97 __u32 header_crc; 98 /* 240-255: Unused at present */ 99 char reserved2[16]; 100}; 101 102#endif /* __LINUX_BCM63XX_TAG_H__ */ 103