tools/firmware-utils/imagetag: Fixed Pirelli Alice Gate CRC calculation in imagetag...
[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / files / arch / mips / include / asm / mach-bcm63xx / bcm_tag.h
1 #ifndef __BCM63XX_TAG_H
2 #define __BCM63XX_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 Lenght */
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 (flashImageAddress)
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 (rootLength), which is added to the kernel
36 * length (kernelLength) 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 char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag
42 char sig_1[SIG1_LEN]; // 4-23: Company Line 1
43 char sig_2[SIG2_LEN]; // 24-37: Company Line 2
44 char chipid[CHIPID_LEN]; // 38-43: Chip this image is for
45 char boardid[BOARDID_LEN]; // 44-59: Board name
46 char big_endian[ENDIANFLAG_LEN]; // 60-61: Map endianness -- 1 BE 0 LE
47 char totalLength[IMAGE_LEN]; // 62-71: Total length of image
48 char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE
49 char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE
50 char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of image start (kernel for OpenWRT, rootfs for stock firmware)
51 char rootLength[IMAGE_LEN]; // 106-115: Size of rootfs
52 char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel
53 char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel
54 char dualImage[DUALFLAG_LEN]; // 138-139: Unused at present
55 char inactiveFlag[INACTIVEFLAG_LEN]; // 140-141: Unused at present
56 char rsa_signature[RSASIG_LEN]; // 142-161: RSA Signature (unused at present; some vendors may use this)
57 char information1[TAGINFO1_LEN]; // 162-191: Compilation and related information (not generated/used by OpenWRT)
58 char flashLayoutVer[FLASHLAYOUTVER_LEN];// 192-195: Version flash layout
59 char fskernelCRC[CRC_LEN]; // 196-199: kernel+rootfs CRC32
60 char information2[TAGINFO2_LEN]; // 200-215: Unused at present except Alice Gate where is is information
61 char imageCRC[CRC_LEN]; // 216-219: CRC32 of image less imagetag (kernel for Alice Gate)
62 char rootfsCRC[CRC_LEN]; // 220-223: CRC32 of rootfs partition
63 char kernelCRC[CRC_LEN]; // 224-227: CRC32 of kernel partition
64 char reserved1[8]; // 228-235: Unused at present
65 char headerCRC[CRC_LEN]; // 236-239: CRC32 of header excluding tagVersion
66 char reserved2[16]; // 240-255: Unused at present
67 };
68
69 #endif /* __BCM63XX_TAG_H */