arm: move reset_cpu from start.S into cpu.c

CPUs arm946es and sa1100 both define the reset_cpu()
function in their start.S file. Move this cpu-specific code
into cpu.c so that start.S only contains ARM generic code.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>

arch/arm/cpu/arm946es/cpu.c

@@ -16,6 +16,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/system.h>
+#include <asm/io.h>
 
 static void cache_flush(void);
 
@@ -51,3 +52,15 @@ static void cache_flush (void)
 	asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
 	asm ("mcr p15, 0, %0, c7, c6, 0": :"r" (i));
 }
+
+#ifndef CONFIG_INTEGRATOR
+
+__attribute__((noreturn)) void reset_cpu(ulong addr __attribute__((unused)))
+{
+	writew(0x0, 0xfffece10);
+	writew(0x8, 0xfffece10);
+	for (;;)
+		;
+}
+
+#endif	/* #ifdef CONFIG_INTEGRATOR */

arch/arm/cpu/arm946es/start.S

@@ -320,26 +320,3 @@ fiq:
 	bl	do_fiq
 
 #endif
-
-# ifdef CONFIG_INTEGRATOR
-
-	/* Satisfied by general board level routine */
-
-#else
-
-	.align	5
-.globl reset_cpu
-reset_cpu:
-
-	ldr	r1, rstctl1	/* get clkm1 reset ctl */
-	mov	r3, #0x0
-	strh	r3, [r1]	/* clear it */
-	mov	r3, #0x8
-	strh	r3, [r1]	/* force dsp+arm reset */
-_loop_forever:
-	b	_loop_forever
-
-rstctl1:
-	.word	0xfffece10
-
-#endif	/* #ifdef CONFIG_INTEGRATOR */

arch/arm/cpu/sa1100/cpu.c

@@ -17,6 +17,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/system.h>
+#include <asm/io.h>
 
 #ifdef CONFIG_USE_IRQ
 DECLARE_GLOBAL_DATA_PTR;
@@ -52,3 +53,16 @@ static void cache_flush (void)
 
 	asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
 }
+
+#define RST_BASE 0x90030000
+#define RSRR	0x00
+#define RCSR	0x04
+
+__attribute__((noreturn)) void reset_cpu(ulong addr __attribute__((unused)))
+{
+	/* repeat endlessly */
+	while (1) {
+		writel(0, RST_BASE + RCSR);
+		writel(1, RST_BASE + RSRR);
+	}
+}

arch/arm/cpu/sa1100/start.S

@@ -337,13 +337,3 @@ fiq:
 	bl	do_fiq
 
 #endif
-
-	.align	5
-.globl reset_cpu
-reset_cpu:
-	ldr	r0, RST_BASE
-	mov	r1, #0x0			@ set bit 3-0 ...
-	str	r1, [r0, #RCSR]			@ ... to clear in RCSR
-	mov	r1, #0x1
-	str	r1, [r0, #RSRR]			@ and perform reset
-	b	reset_cpu			@ silly, but repeat endlessly