Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

[linux-drm-fsl-dcu.git] / include / linux / bcm963xx_tag.h

diff --git a/include/linux/bcm963xx_tag.h b/include/linux/bcm963xx_tag.h
new file mode 100644 (file)
index 0000000..161c7b3
--- /dev/null
+++ b/include/linux/bcm963xx_tag.h
@@ -0,0 +1,102 @@
+#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 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;
+       /* 228-235: 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__ */