1 #ifndef __LINUX_BCM963XX_TAG_H__
2 #define __LINUX_BCM963XX_TAG_H__
4 #include <linux/types.h>
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 DUALFLAG_LEN 2 /* Dual Image flag Length */
16 #define INACTIVEFLAG_LEN 2 /* Inactie Flag Length */
17 #define RSASIG_LEN 20 /* Length of RSA Signature in tag */
18 #define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */
19 #define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */
20 #define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */
21 #define ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */
24 #define IMAGETAG_CRC_START 0xFFFFFFFF
26 #define PIRELLI_BOARDS { \
32 * The broadcom firmware assumes the rootfs starts the image,
33 * therefore uses the rootfs start (flash_image_address)
34 * to determine where to flash the image. Since we have the kernel first
35 * we have to give it the kernel address, but the crc uses the length
36 * associated with this address (root_length), which is added to the kernel
37 * length (kernel_length) to determine the length of image to flash and thus
38 * needs to be rootfs + deadcode (jffs2 EOF marker)
42 /* 0-3: Version of the image tag */
43 char tag_version[TAGVER_LEN];
44 /* 4-23: Company Line 1 */
46 /* 24-37: Company Line 2 */
48 /* 38-43: Chip this image is for */
49 char chip_id[CHIPID_LEN];
50 /* 44-59: Board name */
51 char board_id[BOARDID_LEN];
52 /* 60-61: Map endianness -- 1 BE 0 LE */
53 char big_endian[ENDIANFLAG_LEN];
54 /* 62-71: Total length of image */
55 char total_length[IMAGE_LEN];
56 /* 72-83: Address in memory of CFE */
57 char cfe__address[ADDRESS_LEN];
58 /* 84-93: Size of CFE */
59 char cfe_length[IMAGE_LEN];
60 /* 94-105: Address in memory of image start
61 * (kernel for OpenWRT, rootfs for stock firmware)
63 char flash_image_start[ADDRESS_LEN];
64 /* 106-115: Size of rootfs */
65 char root_length[IMAGE_LEN];
66 /* 116-127: Address in memory of kernel */
67 char kernel_address[ADDRESS_LEN];
68 /* 128-137: Size of kernel */
69 char kernel_length[IMAGE_LEN];
70 /* 138-139: Unused at the moment */
71 char dual_image[DUALFLAG_LEN];
72 /* 140-141: Unused at the moment */
73 char inactive_flag[INACTIVEFLAG_LEN];
74 /* 142-161: RSA Signature (not used; some vendors may use this) */
75 char rsa_signature[RSASIG_LEN];
76 /* 162-191: Compilation and related information (not used in OpenWrt) */
77 char information1[TAGINFO1_LEN];
78 /* 192-195: Version flash layout */
79 char flash_layout_ver[FLASHLAYOUTVER_LEN];
80 /* 196-199: kernel+rootfs CRC32 */
82 /* 200-215: Unused except on Alice Gate where is is information */
83 char information2[TAGINFO2_LEN];
84 /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */
86 /* 220-223: CRC32 of rootfs partition */
88 /* 224-227: CRC32 of kernel partition */
90 /* 228-235: Unused at present */
92 /* 236-239: CRC32 of header excluding last 20 bytes */
94 /* 240-255: Unused at present */
98 #endif /* __LINUX_BCM63XX_TAG_H__ */