diff options
Diffstat (limited to 'package/system/mtd')
| -rw-r--r-- | package/system/mtd/src/imagetag.c | 93 |
1 files changed, 92 insertions, 1 deletions
diff --git a/package/system/mtd/src/imagetag.c b/package/system/mtd/src/imagetag.c index a53c17a..b850837 100644 --- a/package/system/mtd/src/imagetag.c +++ b/package/system/mtd/src/imagetag.c @@ -32,11 +32,102 @@ #include <sys/ioctl.h> #include <mtd/mtd-user.h> -#include <linux/bcm963xx_tag.h> #include "mtd.h" #include "crc32.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 DUALFLAG_LEN 2 /* Dual Image flag Length */ +#define INACTIVEFLAG_LEN 2 /* Inactie Flag 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", \ +} +/* + * 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]; + /* 138-139: Unused at the moment */ + char dual_image[DUALFLAG_LEN]; + /* 140-141: Unused at the moment */ + char inactive_flag[INACTIVEFLAG_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 is 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; + /* 228-231: Image sequence number */ + char image_sequence[4]; + /* 222-235: Openwrt: real rootfs length */ + __u32 real_rootfs_length; + /* 236-239: CRC32 of header excluding last 20 bytes */ + __u32 header_crc; + /* 240-255: Unused at present */ + char reserved2[16]; +}; ssize_t pread(int fd, void *buf, size_t count, off_t offset); ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset); |