1 files changed, 131 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8s/edosk2674/crt0_ram.S b/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
new file mode 100644
index 000000000000..8105dc17d735
--- /dev/null
+++ b/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
@@ -0,0 +1,131 @@
+/*
+ *  linux/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
+ *
+ *  Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ *  Platform depend startup
+ *  Target Archtecture:	EDOSK-2674
+ *  Memory Layout     :	RAM
+ */
+
+#define ASSEMBLY
+
+#include <linux/config.h>
+#include <asm/linkage.h>
+#include <asm/regs267x.h>
+			
+#if !defined(CONFIG_BLKDEV_RESERVE)
+#if defined(CONFIG_GDB_DEBUG)
+#define RAMEND (__ramend - 0xc000)
+#else
+#define RAMEND __ramend
+#endif
+#else
+#define RAMEND CONFIG_BLKDEV_RESERVE_ADDRESS
+#endif
+	
+	.global SYMBOL_NAME(_start)
+	.global SYMBOL_NAME(_command_line)
+	.global SYMBOL_NAME(_platform_gpio_table)
+	.global SYMBOL_NAME(_target_name)
+	
+	.h8300s
+
+	.section .text
+	.file	"crt0_ram.S"
+
+	/* CPU Reset entry */
+SYMBOL_NAME_LABEL(_start)
+	mov.l	#RAMEND,sp
+	ldc	#0x80,ccr
+	ldc	#0x00,exr
+
+	/* Peripheral Setup */
+	bclr	#4,@INTCR:8	/* interrupt mode 2 */
+	bset	#5,@INTCR:8
+	bclr	#0,@IER+1:16
+	bset	#1,@ISCRL+1:16	/* IRQ0 Positive Edge */
+	bclr	#0,@ISCRL+1:16
+
+#if defined(CONFIG_MTD_UCLINUX)
+	/* move romfs image */
+	jsr	@__move_romfs	
+#endif
+	
+	/* .bss clear */
+	mov.l	#__sbss,er5
+	mov.l	er5,er6
+	mov.l	#__ebss,er4
+	sub.l	er5,er4
+	shlr	#2,er4
+	sub.l	er0,er0
+1:	
+	mov.l	er0,@er5
+	adds	#4,er5
+	dec.l	#1,er4
+	bne	1b
+
+	/* copy kernel commandline */
+	mov.l	#COMMAND_START,er5
+	mov.l	#SYMBOL_NAME(command_line),er6
+	mov.w	#512,r4
+	eepmov.w
+
+	/* uClinux kernel start */
+	ldc	#0x90,ccr	/* running kernel */
+	mov.l	#SYMBOL_NAME(init_thread_union),sp
+	add.l	#0x2000,sp
+	jsr	@_start_kernel
+_exit:
+
+	jmp	_exit
+
+	rts
+
+	/* I/O port assign information */
+__platform_gpio_table:	
+	mov.l	#gpio_table,er0
+	rts
+
+gpio_table:
+	;; P1DDR
+	;;      used,ddr
+	.byte	0x00,0x00
+	;; P2DDR
+	.byte	0x00,0x00
+	;; P3DDR
+	.byte	0x3f,0x3a
+	;; dummy
+	.byte	0x00,0x00
+	;; P5DDR
+	.byte	0x00,0x00
+	;; P6DDR
+	.byte	0x00,0x00
+	;; P7DDR
+	.byte	0x00,0x00
+	;; P8DDR
+	.byte	0x00,0x00
+	;; dummy
+	.byte	0x00,0x00
+	;; PADDR
+	.byte	0xff,0xff
+	;; PBDDR
+	.byte	0xff,0x00
+	;; PCDDR
+	.byte	0xff,0x00
+	;; PDDDR
+	.byte	0xff,0x00
+	;; PEDDR
+	.byte	0xff,0x00
+	;; PFDDR
+	.byte	0xff,0xff
+	;; PGDDR
+	.byte	0x0f,0x0f
+	;; PHDDR
+	.byte	0x0f,0x0f
+
+__target_name:	
+	.asciz	"EDOSK-2674"
+	
+	.section .bootvec,"ax"
+	jmp	@SYMBOL_NAME(_start)