* Patch by Yasushi Shoji, 07 Apr 2004:

  - add support for microblaze processors
  - add support for AtmarkTechno "suzaku" board

1 files changed, 53 insertions, 0 deletions

diff --git a/include/asm-microblaze/byteorder.h b/include/asm-microblaze/byteorder.h
new file mode 100644
index 0000000..51cacb0
--- /dev/null
+++ b/include/asm-microblaze/byteorder.h
@@ -0,0 +1,53 @@
+/*
+ * include/asm-microblaze/byteorder.h -- Endian id and conversion ops
+ *
+ *  Copyright (C) 2003  John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_BYTEORDER_H__
+#define __MICROBLAZE_BYTEORDER_H__
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+/* This is effectively a dupe of the arch-independent byteswap
+   code in include/linux/byteorder/swab.h, however we force a cast
+   of the result up to 32 bits.  This in turn forces the compiler
+   to explicitly clear the high 16 bits, which it wasn't doing otherwise.
+
+   I think this is a symptom of a bug in mb-gcc.  JW 20040303
+*/
+static __inline__ __const__ __u16 ___arch__swab16 (__u16 half_word)
+{
+	/* 32 bit temp to cast result, forcing clearing of high word */
+	__u32 temp;
+
+	temp = ((half_word & 0x00FFU) << 8) | ((half_word & 0xFF00U) >> 8);
+
+	return (__u16) temp;
+}
+
+#define __arch__swab16(x) ___arch__swab16(x)
+
+/* Microblaze has no arch-specific endian conversion insns */
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#  define __BYTEORDER_HAS_U64__
+#  define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#include <linux/byteorder/big_endian.h>
+
+#endif /* __MICROBLAZE_BYTEORDER_H__ */