sh: Add Renesas rsk7264 board

The rsk7264 (also know as rsk2+sh7264) is an SH2A based board
with 64MB NAND flash and 64MB SDRAM. It is very similar to the
rsk7203 board.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

arch/sh/cpu/sh2/cpu.c

@@ -33,6 +33,9 @@
 #define scif0_enable() do {\
 		writeb(readb(STBCR4) & ~0x80, STBCR4);\
 	} while (0)
+#define scif3_enable() do {\
+		writeb(readb(STBCR4) & ~0x10, STBCR4);\
+	} while (0)
 
 int checkcpu(void)
 {
@@ -47,7 +50,11 @@ int checkcpu(void)
 int cpu_init(void)
 {
 	/* SCIF enable */
+#if defined(CONFIG_CONS_SCIF3)
+	scif3_enable();
+#else
 	scif0_enable();
+#endif
 	/* CMT clock enable */
 	cmt_clock_enable() ;
 	return 0;

arch/sh/include/asm/cpu_sh2.h

@@ -33,6 +33,8 @@
 
 #if defined(CONFIG_CPU_SH7203)
 # include <asm/cpu_sh7203.h>
+#elif defined(CONFIG_CPU_SH7264)
+# include <asm/cpu_sh7264.h>
 #else
 # error "Unknown SH2 variant"
 #endif

arch/sh/include/asm/cpu_sh7264.h

@@ -0,0 +1,41 @@
+#ifndef _ASM_CPU_SH7264_H_
+#define _ASM_CPU_SH7264_H_
+
+/* Cache */
+#define CCR1		0xFFFC1000
+#define CCR		CCR1
+
+/* PFC */
+#define PACR		0xA4050100
+#define PBCR		0xA4050102
+#define PCCR		0xA4050104
+#define PETCR		0xA4050106
+
+/* Port Data Registers */
+#define PADR		0xA4050120
+#define PBDR		0xA4050122
+#define PCDR		0xA4050124
+
+/* BSC */
+
+/* SDRAM controller */
+
+/* SCIF */
+#define SCSMR_3		0xFFFE9800
+#define SCIF3_BASE	SCSMR_3
+
+/* Timer(CMT) */
+#define CMSTR		0xFFFEC000
+#define CMCSR_0 	0xFFFEC002
+#define CMCNT_0 	0xFFFEC004
+#define CMCOR_0 	0xFFFEC006
+#define CMCSR_1 	0xFFFEC008
+#define CMCNT_1 	0xFFFEC00A
+#define CMCOR_1		0xFFFEC00C
+
+/* On chip oscillator circuits */
+#define FRQCR		0xA415FF80
+#define WTCNT		0xA415FF84
+#define WTCSR		0xA415FF86
+
+#endif	/* _ASM_CPU_SH7264_H_ */