ppc4xx: Add initial 460SX reference board (redwood) config file and defines.

Signed-off-by: Feng Kan <fkan@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/asm-ppc/ppc4xx-sdram.h b/include/asm-ppc/ppc4xx-sdram.h
index e151f0c..cdccd8f 100644
--- a/include/asm-ppc/ppc4xx-sdram.h
+++ b/include/asm-ppc/ppc4xx-sdram.h
@@ -282,7 +282,8 @@
  * Memory Bank 0-7 configuration
  */
 #if defined(CONFIG_440SPE) || \
-    defined(CONFIG_460EX) || defined(CONFIG_460GT)
+    defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
+    defined(CONFIG_460SX)
 #define SDRAM_RXBAS_SDBA_MASK		0xFFE00000	/* Base address	*/
 #define SDRAM_RXBAS_SDBA_ENCODE(n)	((u32)(((phys_size_t)(n) >> 2) & 0xFFE00000))
 #define SDRAM_RXBAS_SDBA_DECODE(n)	((((phys_size_t)(n)) & 0xFFE00000) << 2)
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index 10fd478..6e134c3 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -810,6 +810,10 @@
 #define PVR_460EX_RA	0x130218A3 /* 460EX rev A without Security Engine */
 #define PVR_460GT_SE_RA	0x130218A0 /* 460GT rev A with Security Engine	  */
 #define PVR_460GT_RA	0x130218A1 /* 460GT rev A without Security Engine */
+#define PVR_460SX_RA    0x13541800 /* 460SX rev A                   */
+#define PVR_460SX_RA_V1 0x13541801 /* 460SX rev A Variant 1 Security disabled */
+#define PVR_460GX_RA    0x13541802 /* 460GX rev A                   */
+#define PVR_460GX_RA_V1 0x13541803 /* 460GX rev A Variant 1 Security disabled */
 #define PVR_601		0x00010000
 #define PVR_602		0x00050000
 #define PVR_603		0x00030000