| 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 flashRootLength[IMAGE_LEN]; // 106-115: Size of rootfs for flashing |
| 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 imageSequence[4]; // 228-231: Image sequence number |
| 65 | char rootLength[4]; // 232-235: steal from reserved1 to keep the real root length so we can use in the flash map even after we have change the rootLength to 0 to satisfy devices that check CRC on every boot |
| 66 | char headerCRC[CRC_LEN]; // 236-239: CRC32 of header excluding tagVersion |
| 67 | char reserved2[16]; // 240-255: Unused at present |
| 68 | }; |
| 69 | |
| 70 | #endif /* __BCM63XX_TAG_H */ |
| 71 | |
