1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __LINUX_BCM963XX_TAG_H__ |
3 | #define __LINUX_BCM963XX_TAG_H__ |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | #define TAGVER_LEN 4 /* Length of Tag Version */ |
8 | #define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */ |
9 | #define SIG1_LEN 20 /* Company Signature 1 Length */ |
10 | #define SIG2_LEN 14 /* Company Signature 2 Length */ |
11 | #define BOARDID_LEN 16 /* Length of BoardId */ |
12 | #define ENDIANFLAG_LEN 2 /* Endian Flag Length */ |
13 | #define CHIPID_LEN 6 /* Chip Id Length */ |
14 | #define IMAGE_LEN 10 /* Length of Length Field */ |
15 | #define ADDRESS_LEN 12 /* Length of Address field */ |
16 | #define IMAGE_SEQUENCE_LEN 4 /* Image sequence 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 */ |
22 | |
23 | #define NUM_PIRELLI 2 |
24 | #define IMAGETAG_CRC_START 0xFFFFFFFF |
25 | |
26 | #define PIRELLI_BOARDS { \ |
27 | "AGPF-S0", \ |
28 | "DWV-S0", \ |
29 | } |
30 | |
31 | /* Extended flash address, needs to be subtracted |
32 | * from bcm_tag flash image offsets. |
33 | */ |
34 | #define BCM963XX_EXTENDED_SIZE 0xBFC00000 |
35 | |
36 | /* |
37 | * The broadcom firmware assumes the rootfs starts the image, |
38 | * therefore uses the rootfs start (flash_image_address) |
39 | * to determine where to flash the image. Since we have the kernel first |
40 | * we have to give it the kernel address, but the crc uses the length |
41 | * associated with this address (root_length), which is added to the kernel |
42 | * length (kernel_length) to determine the length of image to flash and thus |
43 | * needs to be rootfs + deadcode (jffs2 EOF marker) |
44 | */ |
45 | |
46 | struct bcm_tag { |
47 | /* 0-3: Version of the image tag */ |
48 | char tag_version[TAGVER_LEN]; |
49 | /* 4-23: Company Line 1 */ |
50 | char sig_1[SIG1_LEN]; |
51 | /* 24-37: Company Line 2 */ |
52 | char sig_2[SIG2_LEN]; |
53 | /* 38-43: Chip this image is for */ |
54 | char chip_id[CHIPID_LEN]; |
55 | /* 44-59: Board name */ |
56 | char board_id[BOARDID_LEN]; |
57 | /* 60-61: Map endianness -- 1 BE 0 LE */ |
58 | char big_endian[ENDIANFLAG_LEN]; |
59 | /* 62-71: Total length of image */ |
60 | char total_length[IMAGE_LEN]; |
61 | /* 72-83: Address in memory of CFE */ |
62 | char cfe__address[ADDRESS_LEN]; |
63 | /* 84-93: Size of CFE */ |
64 | char cfe_length[IMAGE_LEN]; |
65 | /* 94-105: Address in memory of image start |
66 | * (kernel for OpenWRT, rootfs for stock firmware) |
67 | */ |
68 | char flash_image_start[ADDRESS_LEN]; |
69 | /* 106-115: Size of rootfs */ |
70 | char root_length[IMAGE_LEN]; |
71 | /* 116-127: Address in memory of kernel */ |
72 | char kernel_address[ADDRESS_LEN]; |
73 | /* 128-137: Size of kernel */ |
74 | char kernel_length[IMAGE_LEN]; |
75 | /* 138-141: Image sequence number |
76 | * (to be incremented when flashed with a new image) |
77 | */ |
78 | char image_sequence[IMAGE_SEQUENCE_LEN]; |
79 | /* 142-161: RSA Signature (not used; some vendors may use this) */ |
80 | char rsa_signature[RSASIG_LEN]; |
81 | /* 162-191: Compilation and related information (not used in OpenWrt) */ |
82 | char information1[TAGINFO1_LEN]; |
83 | /* 192-195: Version flash layout */ |
84 | char flash_layout_ver[FLASHLAYOUTVER_LEN]; |
85 | /* 196-199: kernel+rootfs CRC32 */ |
86 | __u32 fskernel_crc; |
87 | /* 200-215: Unused except on Alice Gate where it is information */ |
88 | char information2[TAGINFO2_LEN]; |
89 | /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */ |
90 | __u32 image_crc; |
91 | /* 220-223: CRC32 of rootfs partition */ |
92 | __u32 rootfs_crc; |
93 | /* 224-227: CRC32 of kernel partition */ |
94 | __u32 kernel_crc; |
95 | /* 228-235: Unused at present */ |
96 | char reserved1[8]; |
97 | /* 236-239: CRC32 of header excluding last 20 bytes */ |
98 | __u32 ; |
99 | /* 240-255: Unused at present */ |
100 | char reserved2[16]; |
101 | }; |
102 | |
103 | #endif /* __LINUX_BCM63XX_TAG_H__ */ |
104 | |