startup.s

S3C4510的LCD測試程式(含源碼,可以順利修改自己的功能)

;/*
; *	startup.s  --   startup file for C_Entry
; *	
; *	Author: 	lumit-admin <[e-mail]>
; *	Date:		2004-8-26
; *	Copyright:	http://www.lumit.org
; */
;
; *********************************************************************
; *
; * ARM Strategic Support Group
; *
; *********************************************************************

; *********************************************************************
; *
; * Module		: startup.s
; * Description : used to initialize the embedded C library
; * Tool Chain	: ARM Developer Suite v1.0
; * Platform	: Evaluator7T
; * History	:
; *
; *		  	980416 ASloss
; *			- alter stack to point to 0x200000 (128k)
; *			- added headers
; *
; *			2000-04-04 Andrew N. Sloss
; *			- ported to the Evaluator7T
; *
; *
; *********************************************************************
	
	AREA asm_code, CODE

; *********************************************************************	
; * If assembled with TASM the variable {CONFIG} will be set to 16
; * If assembled with ARMASM the variable {CONFIG} will be set to 32
; * Set the variable THUMB to TRUE or false depending on whether the
; * file is being assembled with TASM or ARMASM.
; *********************************************************************	

	GBLL THUMB
	[ {CONFIG} = 16

THUMB SETL {TRUE}
	
; *********************************************************************
; * If assembling with TASM go into 32 bit mode as the Armulator will
; * start up the program in ARM state.
; *********************************************************************

	CODE32
	|
THUMB SETL {FALSE}
	]
	
	IMPORT C_Entry
	
	ENTRY
|__init|

; **********************************************************************
; * Set up the stack pointer to point to the 512K (Evaluator7T top of 
; * memory).
; **********************************************************************

	MOV sp, #0x80000

; **********************************************************************
; * Get the address of the C entry point.
; **********************************************************************

	LDR lr, =C_Entry
	[ THUMB

; **********************************************************************
; * If building a Thumb version pass control to C_entry using the BX
; * instruction so the processor will switch to THUMB state.
; **********************************************************************

	BX lr
	|

; **********************************************************************
; * Otherwise just pass control to C_Entry in ARM state.
; **********************************************************************

	MOV pc, lr
	]

 	ldr		 r0, =0x01805390	; BootStrap Loader entry address
 	mov		 pc, r0
	 
	END

; **********************************************************************
; * End OF startup.s
; **********************************************************************