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 ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */ 20 21 #define NUM_PIRELLI 2 22 #define IMAGETAG_CRC_START 0xFFFFFFFF 23 24 #define PIRELLI_BOARDS { \ 25 "AGPF-S0", \ 26 "DWV-S0", \ 27 } 28 29 /* 30 * The broadcom firmware assumes the rootfs starts the image, 31 * therefore uses the rootfs start (flash_image_address) 32 * to determine where to flash the image. Since we have the kernel first 33 * we have to give it the kernel address, but the crc uses the length 34 * associated with this address (root_length), which is added to the kernel 35 * length (kernel_length) to determine the length of image to flash and thus 36 * needs to be rootfs + deadcode (jffs2 EOF marker) 37 */ 38 39 struct bcm_tag { 40 /* 0-3: Version of the image tag */ 41 char tag_version[TAGVER_LEN]; 42 /* 4-23: Company Line 1 */ 43 char sig_1[SIG1_LEN]; 44 /* 24-37: Company Line 2 */ 45 char sig_2[SIG2_LEN]; 46 /* 38-43: Chip this image is for */ 47 char chip_id[CHIPID_LEN]; 48 /* 44-59: Board name */ 49 char board_id[BOARDID_LEN]; 50 /* 60-61: Map endianness -- 1 BE 0 LE */ 51 char big_endian[ENDIANFLAG_LEN]; 52 /* 62-71: Total length of image */ 53 char total_length[IMAGE_LEN]; 54 /* 72-83: Address in memory of CFE */ 55 char cfe__address[ADDRESS_LEN]; 56 /* 84-93: Size of CFE */ 57 char cfe_length[IMAGE_LEN]; 58 /* 94-105: Address in memory of image start 59 * (kernel for OpenWRT, rootfs for stock firmware) 60 */ 61 char flash_image_start[ADDRESS_LEN]; 62 /* 106-115: Size of rootfs */ 63 char root_length[IMAGE_LEN]; 64 /* 116-127: Address in memory of kernel */ 65 char kernel_address[ADDRESS_LEN]; 66 /* 128-137: Size of kernel */ 67 char kernel_length[IMAGE_LEN]; 68 /* 138-139: Unused at the moment */ 69 char dual_image[DUALFLAG_LEN]; 70 /* 140-141: Unused at the moment */ 71 char inactive_flag[INACTIVEFLAG_LEN]; 72 /* 142-161: RSA Signature (not used; some vendors may use this) */ 73 char rsa_signature[RSASIG_LEN]; 74 /* 162-191: Compilation and related information (not used in OpenWrt) */ 75 char information1[TAGINFO1_LEN]; 76 /* 192-195: Version flash layout */ 77 char flash_layout_ver[FLASHLAYOUTVER_LEN]; 78 /* 196-199: kernel+rootfs CRC32 */ 79 __u32 fskernel_crc; 80 /* 200-215: Unused except on Alice Gate where is is information */ 81 char information2[TAGINFO2_LEN]; 82 /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */ 83 __u32 image_crc; 84 /* 220-223: CRC32 of rootfs partition */ 85 __u32 rootfs_crc; 86 /* 224-227: CRC32 of kernel partition */ 87 __u32 kernel_crc; 88 /* 228-235: Unused at present */ 89 char reserved1[8]; 90 /* 236-239: CRC32 of header excluding last 20 bytes */ 91 __u32 header_crc; 92 /* 240-255: Unused at present */ 93 char reserved2[16]; 94 }; 95 96 #endif /* __BCM63XX_TAG_H */ 97