Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 84 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/byteorder.h b/arch/powerpc/include/asm/byteorder.h
new file mode 100644
index 0000000000..3f5bcf63a1
--- /dev/null
+++ b/arch/powerpc/include/asm/byteorder.h
@@ -0,0 +1,84 @@
+#ifndef _PPC_BYTEORDER_H
+#define _PPC_BYTEORDER_H
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+extern __inline__ unsigned ld_le16(const volatile unsigned short *addr)
+{
+	unsigned val;
+
+	__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
+	return val;
+}
+
+extern __inline__ void st_le16(volatile unsigned short *addr, const unsigned val)
+{
+	__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
+}
+
+extern __inline__ unsigned ld_le32(const volatile unsigned *addr)
+{
+	unsigned val;
+
+	__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
+	return val;
+}
+
+extern __inline__ void st_le32(volatile unsigned *addr, const unsigned val)
+{
+	__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
+}
+
+/* alas, egcs sounds like it has a bug in this code that doesn't use the
+   inline asm correctly, and can cause file corruption. Until I hear that
+   it's fixed, I can live without the extra speed. I hope. */
+#if !(__GNUC__ >= 2 && __GNUC_MINOR__ >= 90)
+#if 0
+#  define __arch_swab16(x) ld_le16(&x)
+#  define __arch_swab32(x) ld_le32(&x)
+#else
+static __inline__ __attribute__((const)) __u16 ___arch__swab16(__u16 value)
+{
+	__u16 result;
+
+	__asm__("rlwimi %0,%1,8,16,23"
+	    : "=r" (result)
+	    : "r" (value), "0" (value >> 8));
+	return result;
+}
+
+static __inline__ __attribute__((const)) __u32 ___arch__swab32(__u32 value)
+{
+	__u32 result;
+
+	__asm__("rlwimi %0,%1,24,16,23\n\t"
+	    "rlwimi %0,%1,8,8,15\n\t"
+	    "rlwimi %0,%1,24,0,7"
+	    : "=r" (result)
+	    : "r" (value), "0" (value >> 24));
+	return result;
+}
+#define __arch__swab32(x) ___arch__swab32(x)
+#define __arch__swab16(x) ___arch__swab16(x)
+#endif /* 0 */
+
+#endif
+
+/* The same, but returns converted value from the location pointer by addr. */
+#define __arch__swab16p(addr) ld_le16(addr)
+#define __arch__swab32p(addr) ld_le32(addr)
+
+/* The same, but do the conversion in situ, ie. put the value back to addr. */
+#define __arch__swab16s(addr) st_le16(addr,*addr)
+#define __arch__swab32s(addr) st_le32(addr,*addr)
+
+#endif /* __GNUC__ */
+
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
+#define __BYTEORDER_HAS_U64__
+#endif
+#include <linux/byteorder/big_endian.h>
+
+#endif /* _PPC_BYTEORDER_H */