source: trunk/target/linux/brcm63xx/files/arch/mips/include/asm/mach-bcm63xx/bcm_tag.h @ 20850

Last change on this file since 20850 was 20850, checked in by cshore, 6 years ago

tools/firmware-utils/imagetag: Fixed Pirelli Alice Gate CRC calculation in imagetag (was invalid strings in bcm_tag.h). Closes #7120

File size: 3.9 KB
Line 
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
40struct 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 */
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