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58dcac852c
combining the elements so that it is no longer necessary to create an openwrt-only tagid and tagcrc, and elimate the tagid detection and switch statements which made dealing with imagetags overly complicated, especially since the logic would need analogs in all code that touched the imagetag. Patch from cshore. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20652 3c298f89-4303-0410-b956-a3cf2f4a3e73
70 lines
3.9 KiB
C
70 lines
3.9 KiB
C
#ifndef __BCM63XX_TAG_H
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#define __BCM63XX_TAG_H
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#define TAGVER_LEN 4 /* Length of Tag Version */
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#define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */
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#define SIG1_LEN 20 /* Company Signature 1 Length */
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#define SIG2_LEN 14 /* Company Signature 2 Lenght */
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#define BOARDID_LEN 16 /* Length of BoardId */
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#define ENDIANFLAG_LEN 2 /* Endian Flag Length */
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#define CHIPID_LEN 6 /* Chip Id Length */
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#define IMAGE_LEN 10 /* Length of Length Field */
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#define ADDRESS_LEN 12 /* Length of Address field */
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#define DUALFLAG_LEN 2 /* Dual Image flag Length */
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#define INACTIVEFLAG_LEN 2 /* Inactie Flag Length */
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#define RSASIG_LEN 20 /* Length of RSA Signature in tag */
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#define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */
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#define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */
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#define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */
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#define CRC_LEN 4 /* Length of CRC in bytes */
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#define ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */
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#define NUM_PIRELLI 2
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#define IMAGETAG_CRC_START 0xFFFFFFFF
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#define PIRELLI_BOARDS { \
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"AGPF_S0", \
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"DWV_SO", \
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}
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/*
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* The broadcom firmware assumes the rootfs starts the image,
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* therefore uses the rootfs start (flashImageAddress)
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* to determine where to flash the image. Since we have the kernel first
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* we have to give it the kernel address, but the crc uses the length
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* associated with this address (rootLength), which is added to the kernel
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* length (kernelLength) to determine the length of image to flash and thus
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* needs to be rootfs + deadcode (jffs2 EOF marker)
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*/
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struct bcm_tag {
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char tagVersion[TAGVER_LEN]; // 0-3: Version of the image tag
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char sig_1[SIG1_LEN]; // 4-23: Company Line 1
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char sig_2[SIG2_LEN]; // 24-37: Company Line 2
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char chipid[CHIPID_LEN]; // 38-43: Chip this image is for
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char boardid[BOARDID_LEN]; // 44-59: Board name
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char big_endian[ENDIANFLAG_LEN]; // 60-61: Map endianness -- 1 BE 0 LE
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char totalLength[IMAGE_LEN]; // 62-71: Total length of image
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char cfeAddress[ADDRESS_LEN]; // 72-83: Address in memory of CFE
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char cfeLength[IMAGE_LEN]; // 84-93: Size of CFE
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char flashImageStart[ADDRESS_LEN]; // 94-105: Address in memory of image start (kernel for OpenWRT, rootfs for stock firmware)
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char rootLength[IMAGE_LEN]; // 106-115: Size of rootfs
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char kernelAddress[ADDRESS_LEN]; // 116-127: Address in memory of kernel
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char kernelLength[IMAGE_LEN]; // 128-137: Size of kernel
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char dualImage[DUALFLAG_LEN]; // 138-139: Unused at present
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char inactiveFlag[INACTIVEFLAG_LEN]; // 140-141: Unused at present
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char rsa_signature[RSASIG_LEN]; // 142-161: RSA Signature (unused at present; some vendors may use this)
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char information1[TAGINFO1_LEN]; // 162-191: Compilation and related information (not generated/used by OpenWRT)
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char flashLayoutVer[FLASHLAYOUTVER_LEN];// 192-195: Version flash layout
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char fskernelCRC[CRC_LEN]; // 196-199: kernel+rootfs CRC32
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char information2[TAGINFO2_LEN]; // 200-215: Unused at present except Alice Gate where is is information
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char imageCRC[CRC_LEN]; // 216-219: CRC32 of image less imagetag (kernel for Alice Gate)
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char rootfsCRC[CRC_LEN]; // 220-223: CRC32 of rootfs partition
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char kernelCRC[CRC_LEN]; // 224-227: CRC32 of kernel partition
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char reserved1[8]; // 228-235: Unused at present
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char headerCRC[CRC_LEN]; // 236-239: CRC32 of header excluding tagVersion
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char reserved2[16]; // 240-255: Unused at present
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};
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#endif /* __BCM63XX_TAG_H */
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