/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_BCM963XX_TAG_H__ #define __LINUX_BCM963XX_TAG_H__ #include <linux/types.h> #define TAGVER_LEN 4 /* Length of Tag Version */ #define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */ #define SIG1_LEN 20 /* Company Signature 1 Length */ #define SIG2_LEN 14 /* Company Signature 2 Length */ #define BOARDID_LEN 16 /* Length of BoardId */ #define ENDIANFLAG_LEN 2 /* Endian Flag Length */ #define CHIPID_LEN 6 /* Chip Id Length */ #define IMAGE_LEN 10 /* Length of Length Field */ #define ADDRESS_LEN 12 /* Length of Address field */ #define IMAGE_SEQUENCE_LEN 4 /* Image sequence Length */ #define RSASIG_LEN 20 /* Length of RSA Signature in tag */ #define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */ #define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */ #define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */ #define ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */ #define NUM_PIRELLI 2 #define IMAGETAG_CRC_START 0xFFFFFFFF #define PIRELLI_BOARDS { \ "AGPF-S0", \ "DWV-S0", \ } /* Extended flash address, needs to be subtracted * from bcm_tag flash image offsets. */ #define BCM963XX_EXTENDED_SIZE 0xBFC00000 /* * The broadcom firmware assumes the rootfs starts the image, * therefore uses the rootfs start (flash_image_address) * to determine where to flash the image. Since we have the kernel first * we have to give it the kernel address, but the crc uses the length * associated with this address (root_length), which is added to the kernel * length (kernel_length) to determine the length of image to flash and thus * needs to be rootfs + deadcode (jffs2 EOF marker) */ struct bcm_tag { /* 0-3: Version of the image tag */ char tag_version[TAGVER_LEN]; /* 4-23: Company Line 1 */ char sig_1[SIG1_LEN]; /* 24-37: Company Line 2 */ char sig_2[SIG2_LEN]; /* 38-43: Chip this image is for */ char chip_id[CHIPID_LEN]; /* 44-59: Board name */ char board_id[BOARDID_LEN]; /* 60-61: Map endianness -- 1 BE 0 LE */ char big_endian[ENDIANFLAG_LEN]; /* 62-71: Total length of image */ char total_length[IMAGE_LEN]; /* 72-83: Address in memory of CFE */ char cfe__address[ADDRESS_LEN]; /* 84-93: Size of CFE */ char cfe_length[IMAGE_LEN]; /* 94-105: Address in memory of image start * (kernel for OpenWRT, rootfs for stock firmware) */ char flash_image_start[ADDRESS_LEN]; /* 106-115: Size of rootfs */ char root_length[IMAGE_LEN]; /* 116-127: Address in memory of kernel */ char kernel_address[ADDRESS_LEN]; /* 128-137: Size of kernel */ char kernel_length[IMAGE_LEN]; /* 138-141: Image sequence number * (to be incremented when flashed with a new image) */ char image_sequence[IMAGE_SEQUENCE_LEN]; /* 142-161: RSA Signature (not used; some vendors may use this) */ char rsa_signature[RSASIG_LEN]; /* 162-191: Compilation and related information (not used in OpenWrt) */ char information1[TAGINFO1_LEN]; /* 192-195: Version flash layout */ char flash_layout_ver[FLASHLAYOUTVER_LEN]; /* 196-199: kernel+rootfs CRC32 */ __u32 fskernel_crc; /* 200-215: Unused except on Alice Gate where it is information */ char information2[TAGINFO2_LEN]; /* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */ __u32 image_crc; /* 220-223: CRC32 of rootfs partition */ __u32 rootfs_crc; /* 224-227: CRC32 of kernel partition */ __u32 kernel_crc; /* 228-235: Unused at present */ char reserved1[8]; /* 236-239: CRC32 of header excluding last 20 bytes */ __u32 header_crc; /* 240-255: Unused at present */ char reserved2[16]; }; #endif /* __LINUX_BCM63XX_TAG_H__ */
