55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#ifndef _ENVFS_H
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#define _ENVFS_H
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#define ENVFS_MAGIC 0x798fba79 /* some random number */
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#define ENVFS_INODE_MAGIC 0x67a8c78d
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#define ENVFS_END_MAGIC 0x6a87d6cd
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#define ENVFS_SIGNATURE "U-Boot envfs"
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struct envfs_inode {
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uint32_t magic; /* ENVFS_INODE_MAGIC */
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uint32_t size; /* data size in bytes */
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uint32_t namelen; /* The length of the filename _including_ a trailing 0 */
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char data[0]; /* The filename (zero terminated) + padding to 4 byte boundary
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* followed by the data for this inode.
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* The next inode follows after the data + padding to 4 byte
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* boundary.
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*/
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};
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/*
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* Superblock information at the beginning of the FS.
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*/
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struct envfs_super {
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uint32_t magic; /* ENVFS_MAGIC */
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uint32_t priority;
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uint32_t crc; /* crc for the data */
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uint32_t size; /* size of data */
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uint32_t flags; /* feature flags */
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uint32_t future; /* reserved for future use */
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uint32_t sb_crc; /* crc for the superblock */
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};
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define ENVFS_16(x) (x)
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#define ENVFS_24(x) (x)
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#define ENVFS_32(x) (x)
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#define ENVFS_GET_NAMELEN(x) ((x)->namelen)
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#define ENVFS_GET_OFFSET(x) ((x)->offset)
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#define ENVFS_SET_OFFSET(x,y) ((x)->offset = (y))
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#define ENVFS_SET_NAMELEN(x,y) ((x)->namelen = (y))
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#ifdef __KERNEL__
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#define ENVFS_16(x) swab16(x)
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#define ENVFS_24(x) ((swab32(x)) >> 8)
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#define ENVFS_32(x) swab32(x)
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#else /* not __KERNEL__ */
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#define ENVFS_16(x) bswap_16(x)
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#define ENVFS_24(x) ((bswap_32(x)) >> 8)
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#define ENVFS_32(x) bswap_32(x)
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#endif /* not __KERNEL__ */
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#endif
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#endif /* _ENVFS_H */
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