1 #ifndef __BCM963XX_TAG_H 2 #define __BCM963XX_TAG_H 3 4 #define TAGVER_LEN 4 /* Length of Tag Version */ 5 #define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */ 6 #define SIG1_LEN 20 /* Company Signature 1 Length */ 7 #define SIG2_LEN 14 /* Company Signature 2 Length */ 8 #define BOARDID_LEN 16 /* Length of BoardId */ 9 #define ENDIANFLAG_LEN 2 /* Endian Flag Length */ 10 #define CHIPID_LEN 6 /* Chip Id Length */ 11 #define IMAGE_LEN 10 /* Length of Length Field */ 12 #define ADDRESS_LEN 12 /* Length of Address field */ 13 #define DUALFLAG_LEN 2 /* Dual Image flag Length */ 14 #define INACTIVEFLAG_LEN 2 /* Inactie Flag Length */ 15 #define RSASIG_LEN 20 /* Length of RSA Signature in tag */ 16 #define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */ 17 #define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */ 18 #define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */ 19 #define CRC_LEN 4 /* Length of CRC in bytes */ 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 /* 31 * The broadcom firmware assumes the rootfs starts the image, 32 * therefore uses the rootfs start (flash_image_address) 33 * to determine where to flash the image. Since we have the kernel first 34 * we have to give it the kernel address, but the crc uses the length 35 * associated with this address (root_length), which is added to the kernel 36 * length (kernel_length) to determine the length of image to flash and thus 37 * needs to be rootfs + deadcode (jffs2 EOF marker) 38 */ 39 40 struct bcm_tag { 41 /* 0-3: Version of the image tag */ 42 char tag_version[TAGVER_LEN]; 43 /* 4-23: Company Line 1 */ 44 char sig_1[SIG1_LEN]; 45 /* 24-37: Company Line 2 */ 46 char sig_2[SIG2_LEN]; 47 /* 38-43: Chip this image is for */ 48 char chip_id[CHIPID_LEN]; 49 /* 44-59: Board name */ 50 char board_id[BOARDID_LEN]; 51 /* 60-61: Map endianness -- 1 BE 0 LE */ 52 char big_endian[ENDIANFLAG_LEN]; 53 /* 62-71: Total length of image */ 54 char total_length[IMAGE_LEN]; 55 /* 72-83: Address in memory of CFE */ 56 char cfe__address[ADDRESS_LEN]; 57 /* 84-93: Size of CFE */ 58 char cfe_length[IMAGE_LEN]; 59 /* 94-105: Address in memory of image start 60 * (kernel for OpenWRT, rootfs for stock firmware) 61 */ 62 char flash_image_start[ADDRESS_LEN]; 63 /* 106-115: Size of rootfs */ 64 char root_length[IMAGE_LEN]; 65 /* 116-127: Address in memory of kernel */ 66 char kernel_address[ADDRESS_LEN]; 67 /* 128-137: Size of kernel */ 68 char kernel_length[IMAGE_LEN]; 69 /* 138-139: Unused at the moment */ 70 char dual_image[DUALFLAG_LEN]; 71 /* 140-141: Unused at the moment */ 72 char inactive_flag[INACTIVEFLAG_LEN]; 73 /* 142-161: RSA Signature (not used; some vendors may use this) */ 74 char rsa_signature[RSASIG_LEN]; 75 /* 162-191: Compilation and related information (not used in OpenWrt) */ 76 char information1[TAGINFO1_LEN]; 77 /* 192-195: Version flash layout */ 78 char flash_layout_ver[FLASHLAYOUTVER_LEN]; 79 /* 196-199: kernel+rootfs CRC32 */ 80 char fskernel_crc[CRC_LEN]; 81 /* 200-215: Unused except on Alice Gate where is is information */ 82 char information2[TAGINFO2_LEN]; 83 /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */ 84 char image_crc[CRC_LEN]; 85 /* 220-223: CRC32 of rootfs partition */ 86 char rootfs_crc[CRC_LEN]; 87 /* 224-227: CRC32 of kernel partition */ 88 char kernel_crc[CRC_LEN]; 89 /* 228-235: Unused at present */ 90 char reserved1[8]; 91 /* 236-239: CRC32 of header excluding last 20 bytes */ 92 char header_crc[CRC_LEN]; 93 /* 240-255: Unused at present */ 94 char reserved2[16]; 95 }; 96 97 #endif /* __BCM63XX_TAG_H */ 98