bbuboot.c

优龙YLP270开发板 光盘自带的BIOS和实验例程源码 强烈推荐

/******************************************************************************
**
**  COPYRIGHT (C) 2002 Intel Corporation.
**
**  This software as well as the software described in it is furnished under
**  license and may only be used or copied in accordance with the terms of the
**  license. The information in this file is furnished for informational use
**  only, is subject to change without notice, and should not be construed as
**  a commitment by Intel Corporation. Intel Corporation assumes no
**  responsibility or liability for any errors or inaccuracies that may appear
**  in this document or any software that may be provided in association with
**  this document.
**  Except as permitted by such license, no part of this document may be
**  reproduced, stored in a retrieval system, or transmitted in any form or by
**  any means without the express written consent of Intel Corporation.
**
**  FILENAME:       BBUBoot.c
**
**  PURPOSE:        This file contains the Bulverde Keypad POST code for 
**                  the Intel(r) XScale(tm) Microarchitecture.
**
**  LAST MODIFIED:  $Modtime: 7/17/03 1:01p $
******************************************************************************/

/*
*******************************************************************************
*   HEADER FILES
*******************************************************************************
*/

#include "string.h"
#include "stdio.h"
#include <stdlib.h>
#include <ctype.h>

#include "systypes.h"
#include "timedelays.h"
#include "dm_errors.h"
#include "xsuart.h"
#include "xsffuart.h"
#include "xsbtuart.h"
#include "xsstuart.h"
#include "uarts.h"
#include "DM_SerialInOut.h"

#include "dm_debug.h"
#include "platform.h"
#include "XsMemCtrl.h"
#include "boardcontrol.h"
#include "xsClkMgr.h"


/*
*******************************************************************************
*   GLOBAL DEFINITIONS
*******************************************************************************
*/


/*
*******************************************************************************
*   LOCAL DEFINITIONS
*******************************************************************************
*/


/*
*******************************************************************************
*    Mainstone Platform Registers for the Keypad
*******************************************************************************
*/

#define	MISC_WRITE1	    	(*(volatile UINT32 *) 0x08000080)


/*
*******************************************************************************
*
* FUNCTION:
*    PostBBU
*
* DESCRIPTION:
*    Reboot the system - which will bring up the BBU program as long as the platform
*    switches are set to boot the BBU code!
*
* INPUT PARAMETERS:
*    None.
*
* RETURNS:
*    None
*
* GLOBAL EFFECTS:
*    None.
*
* ASSUMPTIONS:
*    None.
*
* CALLS:
*    None.
*
* CALLED BY: 
*    Post main function.
*
* PROTOTYPE:
*    int PostBBU(void);
*
*******************************************************************************
*/
int PostBBU(void)
{
    printf(" Be sure platform switches are set for BBU boot!\r\n");
    printf(" ......Booting BBU\r\n");

	MISC_WRITE1 = 1; 	// Set the platform reset bit
	
	return (0);			// The code should never get here.... but just in case - do a return
}

void KPostBBU(PVOID arg, PCHAR param)
{
    PostBBU();
}

		
// end of PostKeypadTest()