[ARM PATCH] 1792/1: S3C2410 - arch/arm/boot [ fix for 1789/1 ]

Patch from Ben Dooks

arch/arm/boot support for S3C2410

support for boot (and debug) messages via EmbeddedICE (CP14)
comms registers.

fixed typos from 1789/1

arch/arm/boot/Makefile

@@ -55,6 +55,10 @@ params_phys-$(CONFIG_ARCH_ADIFCC)	:= 0xc0000100
 params_phys-$(CONFIG_ARCH_OMAP)		:= 0x10000100
 initrd_phys-$(CONFIG_ARCH_OMAP)		:= 0x10800000
 
+   zreladdr-$(CONFIG_ARCH_S3C2410)      := 0x30008000
+params_phys-$(CONFIG_ARCH_S3C2410)      := 0x30000100
+
+
 ZRELADDR    := $(zreladdr-y)
 ZTEXTADDR   := $(ztextaddr-y)
 PARAMS_PHYS := $(params_phys-y)

arch/arm/boot/compressed/Makefile

@@ -55,6 +55,10 @@ ifeq ($(CONFIG_CPU_XSCALE),y)
 OBJS		+= head-xscale.o
 endif
 
+ifeq ($(CONFIG_DEBUG_ICEDCC),y)
+OBJS            += ice-dcc.o
+endif
+
 SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/LOAD_ADDR/$(ZRELADDR)/;s/BSS_START/$(ZBSSADDR)/
 
 targets       := vmlinux vmlinux.lds piggy piggy.gz piggy.o \

arch/arm/boot/compressed/head.S

@@ -25,6 +25,12 @@
 		.macro	writeb, rb
 		str	\rb, [r3, #0x160]
 		.endm
+#elif defined(CONFIG_DEBUG_ICEDCC)
+		.macro	loadsp, rb
+		.endm
+		.macro writeb, rb
+		mcr	p14, 0, \rb, c0, c1, 0
+		.endm
 #elif defined(CONFIG_FOOTBRIDGE)
 		.macro	loadsp,	rb
 		mov	\rb, #0x7c000000

arch/arm/boot/compressed/ice-dcc.S

+
+
+	.text
+
+	.global	icedcc_putc
+
+icedcc_putc:
+	mov	r2, #0x4000000
+1:
+	subs	r2, r2, #1
+	movlt	pc, r14
+	mrc	p14, 0, r1, c0, c0, 0
+	tst	r1, #2
+	bne	1b
+
+	mcr	p14, 0, r0, c1, c0, 0
+	mov	pc, r14

arch/arm/boot/compressed/misc.c

@@ -27,6 +27,22 @@ unsigned int __machine_arch_type;
 #define puts printf
 #endif
 
+#ifdef CONFIG_DEBUG_ICEDCC
+#define puts icedcc_puts
+#define putc icedcc_putc
+
+extern void idedcc_putc(int ch);
+
+static void
+icedcc_puts(const char *ptr)
+{
+	for (; *ptr != '\0'; ptr++) {
+		icedcc_putc(*ptr);
+	}
+}
+
+#endif
+
 #define __ptr_t void *
 
 /*