Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / include / cramfs / cramfs_fs.h

diff --git a/qemu/roms/u-boot/include/cramfs/cramfs_fs.h b/qemu/roms/u-boot/include/cramfs/cramfs_fs.h
new file mode 100644 (file)
index 0000000..e0c14f0
--- /dev/null
+++ b/qemu/roms/u-boot/include/cramfs/cramfs_fs.h
@@ -0,0 +1,100 @@
+#ifndef __CRAMFS_H
+#define __CRAMFS_H
+
+#define CRAMFS_MAGIC           0x28cd3d45      /* some random number */
+#define CRAMFS_SIGNATURE       "Compressed ROMFS"
+
+/*
+ * Width of various bitfields in struct cramfs_inode.
+ * Primarily used to generate warnings in mkcramfs.
+ */
+#define CRAMFS_MODE_WIDTH      16
+#define CRAMFS_UID_WIDTH       16
+#define CRAMFS_SIZE_WIDTH      24
+#define CRAMFS_GID_WIDTH       8
+#define CRAMFS_NAMELEN_WIDTH   6
+#define CRAMFS_OFFSET_WIDTH    26
+
+/*
+ * Since inode.namelen is a unsigned 6-bit number, the maximum cramfs
+ * path length is 63 << 2 = 252.
+ */
+#define CRAMFS_MAXPATHLEN (((1 << CRAMFS_NAMELEN_WIDTH) - 1) << 2)
+
+/*
+ * Reasonably terse representation of the inode data.
+ */
+struct cramfs_inode {
+       u32 mode:CRAMFS_MODE_WIDTH, uid:CRAMFS_UID_WIDTH;
+
+       /* SIZE for device files is i_rdev */
+       u32 size:CRAMFS_SIZE_WIDTH, gid:CRAMFS_GID_WIDTH;
+
+       /* NAMELEN is the length of the file name, divided by 4 and
+          rounded up.  (cramfs doesn't support hard links.) */
+       /* OFFSET: For symlinks and non-empty regular files, this
+          contains the offset (divided by 4) of the file data in
+          compressed form (starting with an array of block pointers;
+          see README).  For non-empty directories it is the offset
+          (divided by 4) of the inode of the first file in that
+          directory.  For anything else, offset is zero. */
+       u32 namelen:CRAMFS_NAMELEN_WIDTH, offset:CRAMFS_OFFSET_WIDTH;
+};
+
+struct cramfs_info {
+       u32 crc;
+       u32 edition;
+       u32 blocks;
+       u32 files;
+};
+
+/*
+ * Superblock information at the beginning of the FS.
+ */
+struct cramfs_super {
+       u32 magic;                      /* 0x28cd3d45 - random number */
+       u32 size;                       /* length in bytes */
+       u32 flags;                      /* feature flags */
+       u32 future;                     /* reserved for future use */
+       u8 signature[16];               /* "Compressed ROMFS" */
+       struct cramfs_info fsid;        /* unique filesystem info */
+       u8 name[16];                    /* user-defined name */
+       struct cramfs_inode root;       /* root inode data */
+};
+
+/*
+ * Feature flags
+ *
+ * 0x00000000 - 0x000000ff: features that work for all past kernels
+ * 0x00000100 - 0xffffffff: features that don't work for past kernels
+ */
+#define CRAMFS_FLAG_FSID_VERSION_2     0x00000001      /* fsid version #2 */
+#define CRAMFS_FLAG_SORTED_DIRS                0x00000002      /* sorted dirs */
+#define CRAMFS_FLAG_HOLES              0x00000100      /* support for holes */
+#define CRAMFS_FLAG_WRONG_SIGNATURE    0x00000200      /* reserved */
+#define CRAMFS_FLAG_SHIFTED_ROOT_OFFSET 0x00000400     /* shifted root fs */
+
+/*
+ * Valid values in super.flags.         Currently we refuse to mount
+ * if (flags & ~CRAMFS_SUPPORTED_FLAGS).  Maybe that should be
+ * changed to test super.future instead.
+ */
+#define CRAMFS_SUPPORTED_FLAGS ( 0x000000ff \
+                               | CRAMFS_FLAG_HOLES \
+                               | CRAMFS_FLAG_WRONG_SIGNATURE \
+                               | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET )
+
+#define CRAMFS_16(x)   (x)
+#define CRAMFS_24(x)   (x)
+#define CRAMFS_32(x)   (x)
+#define CRAMFS_GET_NAMELEN(x)  ((x)->namelen)
+#define CRAMFS_GET_OFFSET(x)   ((x)->offset)
+#define CRAMFS_SET_OFFSET(x,y) ((x)->offset = (y))
+#define CRAMFS_SET_NAMELEN(x,y) ((x)->namelen = (y))
+
+/* Uncompression interfaces to the underlying zlib */
+int cramfs_uncompress_block(void *dst, void *src, int srclen);
+int cramfs_uncompress_init(void);
+int cramfs_uncompress_exit(void);
+
+#endif /* __CRAMFS_H */