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Add cramfs support for m68k
Patch by Zachary Landau, 21 Feb 2005

Wolfgang Denk 19 years ago
parent
commit
b66eb5282d
3 changed files with 26 additions and 1 deletions
  1. 3 0
      CHANGELOG
  2. 22 0
      include/cramfs/cramfs_fs.h
  3. 1 1
      include/linux/stat.h

+ 3 - 0
CHANGELOG

@@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* Add cramfs support for m68k
+  Patch by Zachary Landau, 21 Feb 2005
+
 * Update ep8260: Fix flash timeouts; improve clock resolution for faster UARTs
   Patch by Jeff Angielski, 21 Feb 2005 
     

+ 22 - 0
include/cramfs/cramfs_fs.h

@@ -84,6 +84,7 @@ struct cramfs_super {
 				| CRAMFS_FLAG_WRONG_SIGNATURE \
 				| CRAMFS_FLAG_SHIFTED_ROOT_OFFSET )
 
+#if __BYTE_ORDER == __LITTLE_ENDIAN
 #define CRAMFS_16(x)	(x)
 #define CRAMFS_24(x)	(x)
 #define CRAMFS_32(x)	(x)
@@ -91,6 +92,27 @@ struct cramfs_super {
 #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))
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#ifdef __KERNEL__
+#define CRAMFS_16(x)	swab16(x)
+#define CRAMFS_24(x)	((swab32(x)) >> 8)
+#define CRAMFS_32(x)	swab32(x)
+#else /* not __KERNEL__ */
+#define CRAMFS_16(x)	bswap_16(x)
+#define CRAMFS_24(x)	((bswap_32(x)) >> 8)
+#define CRAMFS_32(x)	bswap_32(x)
+#endif /* not __KERNEL__ */
+#define CRAMFS_GET_NAMELEN(x)	(((u8*)(x))[8] & 0x3f)
+#define CRAMFS_GET_OFFSET(x)	((CRAMFS_24(((u32*)(x))[2] & 0xffffff) << 2) |\
+				 ((((u32*)(x))[2] & 0xc0000000) >> 30))
+#define CRAMFS_SET_NAMELEN(x,y)	(((u8*)(x))[8] = (((0x3f & (y))) | \
+						  (0xc0 & ((u8*)(x))[8])))
+#define CRAMFS_SET_OFFSET(x,y)	(((u32*)(x))[2] = (((y) & 3) << 30) | \
+				 CRAMFS_24((((y) & 0x03ffffff) >> 2)) | \
+				 (((u32)(((u8*)(x))[8] & 0x3f)) << 24))
+#else
+#error "__BYTE_ORDER must be __LITTLE_ENDIAN or __BIG_ENDIAN"
+#endif
 
 /* Uncompression interfaces to the underlying zlib */
 int cramfs_uncompress_block(void *dst, void *src, int srclen);

+ 1 - 1
include/linux/stat.h

@@ -67,7 +67,7 @@ struct stat {
 
 #endif	/* __PPC__ */
 
-#if defined (__ARM__) || defined (__I386__)
+#if defined (__ARM__) || defined (__I386__) || defined (__M68K__)
 
 struct stat {
 	unsigned short st_dev;