1 #ifndef __BCM963XX_TAG_H
2 #define __BCM963XX_TAG_H
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 */
23 #define IMAGETAG_CRC_START 0xFFFFFFFF
25 #define PIRELLI_BOARDS { \
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)
41 /* 0-3: Version of the image tag */
42 char tag_version
[TAGVER_LEN
];
43 /* 4-23: Company Line 1 */
45 /* 24-37: Company Line 2 */
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)
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 */
91 /* 236-239: CRC32 of header excluding last 20 bytes */
92 char header_crc
[CRC_LEN
];
93 /* 240-255: Unused at present */
97 #endif /* __BCM63XX_TAG_H */
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