mips32.s

一个专门针对mips的bootloader程序源代码

/************************************************************************
 *
 *  mips32.S
 *
 *  Initialisation specific to MIPS32 processor
 *
 *
 * ######################################################################
 *
 * Copyright (c) 1999-2000 MIPS Technologies, Inc. All rights reserved. 
 * 
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 * America. 
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 ************************************************************************/


/************************************************************************
 *  Include files
 ************************************************************************/

#include <sysdefs.h>
#include <mips.h>
#include <init.h>
			
/************************************************************************
 *  Definitions
 ************************************************************************/

/************************************************************************
 *  Public variables
 ************************************************************************/

/************************************************************************
 *  Static variables
 ************************************************************************/

/************************************************************************
 *  Implementation : Public functions
 ************************************************************************/

/************************************************************************
 *
 *                          sys_init_mips32
 *  Description :
 *  -------------
 *
 *  MIPS32 specific cpu initialisation including determination of
 *  cache sizes.
 *
 *  Return values :
 *  ---------------
 *
 *  v0 is always set to 0
 *
 ************************************************************************/
	
LEAF(sys_init_mips32)			

	.set noreorder
	
	/* Setup STATUS and CONFIG0 registers */
	li	t0, STATUS_MIPS32
	MTC0(	t0, C0_STATUS )
	li	t0, CONFIG0_MIPS32
	MTC0(	t0, C0_CONFIG )

	jr	ra
	move	v0, zero			# No error

	
END(sys_init_mips32)
	
/************************************************************************
 *  Implementation : Static functions
 ************************************************************************/