--- linux-2.6.19.2/include/asm-mips/byteorder.h	2007-01-10 20:10:37.000000000 +0100
+++ linux-2.6.19.2.new/include/asm-mips/byteorder.h	2007-05-16 21:14:47.000000000 +0200
@@ -58,6 +58,35 @@
 
 #endif /* CONFIG_CPU_MIPSR2 */
 
+#ifdef CONFIG_ADM5120_HARDWARE_SWAB
+
+static __inline__ __attribute_const__ __u16 ___adm5120__swab16(__u16 x)
+{
+	__asm__ (
+	"	sh	%2, 0xCA(%1)			\n"
+	"	lhu	%0, 0xCC(%1)			\n"
+	: "=r" (x)
+	: "r" (0xB2000000), "r" (x));
+
+	return x;
+}
+
+static __inline__ __attribute_const__ __u32 ___adm5120__swab32(__u32 x)
+{
+	__asm__ (
+	"	sw	%2, 0xC8(%1)			\n"
+	"	lw	%0, 0xCC(%1)			\n"
+	: "=r" (x)
+	: "r" (0xB2000000), "r" (x));
+
+	return x;
+}
+
+#define __arch__swab16(x)	___adm5120__swab16(x)
+#define __arch__swab32(x)	___adm5120__swab32(x)
+
+#endif /* CONFIG_ADM5120_HARDWARE_SWAB */
+
 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
 #  define __BYTEORDER_HAS_U64__
 #  define __SWAB_64_THRU_32__