board.c

这是ARM在Vxworks的驱动源代码

/***********************************************************************/
/*                                                                     */
/*   MODULE:  bsps/5000/src/board.c                                    */
/*   DATE:    99/05/27                                                 */
/*   PURPOSE: Board specific routines for board initialization         */
/*                                                                     */
/***********************************************************************/
#include "vxWorks.h"
#include "bsp.h"
#include <pub/bsps.h>
#include <bspfuncs.h>
#include "board.h"
#include "pci/pcihdr.h"
#include <libsys/misc.h>
#include <disi.h>

#include "ixp425Gpio.h"


/*---------------------------------------------------------------------*/
/* DEBUG                                                               */
/*---------------------------------------------------------------------*/
/* #define DEBUG_PRINT 1 */
extern int rawprint();
extern void BspRawPrint(char * format,...);
/*---------------------------------------------------------------------*/
/* Bsp Specific Function Declarations                                  */
/*---------------------------------------------------------------------*/
extern ULONG FreeMemStart;
extern char * SysInit(char * freemem_p);



/************************************************************************/
/*			Board information functions									*/
/************************************************************************/
ULONG BoardInfoEpromBase(void)
{
    return BD_EPROM_BASE_ADDR;
}


USHORT BoardInfoPasswordJump(void)
{
	return gBoardInfo.PasswordJump;
}

USHORT BoardInfoReserveJump(void)
{
	return gBoardInfo.ReserveJump;
}


ULONG BoardInfoDecClkRateHz(void)
{
	return gBoardInfo.DecClkRateHz;
}

void SetBoardInfoBoardType( USHORT type )
{
	gBoardInfo.BoardType = type;
}

ULONG BoardInfoFlashOnBoardBaseaddr(void)
{

	return FLASH_TYPE_ON_BOARD_BASEADDR_IXP425;
}


/************************************************************************/
/*	The following functions are provided for compatibility				*/
/************************************************************************/
ULONG BspCpuClkRate(void)
{
	return BoardInfoCpuClkRate();
}

/***********************************************************************/
/*                                                                     */
/* GetIMMR: Return the IMMR register contents, for now this is         */
/*          hardcoded because the IMMR has to be set before the actual */
/*          IMMR register can be read.                                 */
/*                                                                     */
/*      INPUTS: None                                                   */
/*                                                                     */
/*     RETURNS: None                                                   */
/*     OUTPUTS: None                                                   */
/*     NOTE(S):                                                        */
/*                                                                     */
/***********************************************************************/ 
ULONG GetIMMR(void)
{
    return(0);
}

/************************************************************************/
/*	probe the dram size                            				*/
/************************************************************************/
static ULONG ProbeDramSize(void)
{
	ULONG	size;

	size = 0x08000000;
	return size;

}

void SetupBoardInfo(void)
{
	ULONG	*addr1, *addr2;
	ULONG cpuClkRate_Hz;                     /* External CPU bus freq Hz   */

	gBoardInfo.RouterType = BspInitEpromInfo();


	#if 0
	gBoardInfo.CpuBusClkRate = sysClkFreqGet();
	cpuClkRate_Hz = sysCoreFreqGet();

	/*---------------------------------------------------------------------*/
	/* Calculate the time constant. The decrementer decrements once every  */
	/* four external bus clocks. 1000000 / 4 = 250000.                     */
	/*---------------------------------------------------------------------*/
	gBoardInfo.DecClkRateHz = (gBoardInfo.CpuBusClkRate / 8);

	/*---------------------------------------------------------------------*/
	/* Setup the clock rate variables for the board                        */
	/*---------------------------------------------------------------------*/
	gBoardInfo.CpuClkRate = cpuClkRate_Hz/1000000;
	#endif
	/*---------------------------------------------------------------------*/
	/* Setup dram attributes						                        */
	/*---------------------------------------------------------------------*/
	gBoardInfo.DramBase = 0;
	gBoardInfo.DramSize = ProbeDramSize();
	/*---------------------------------------------------------------------*/
	/* 8560 kernel supports PCI						                       */
	/*---------------------------------------------------------------------*/
	gBoardInfo.PciSupport = PCI_SUPPORT_NONE;

	gBoardInfo.FlashType = FLASH_TYPE_INTEL;
	gBoardInfo.FlashBase = FLASH_TYPE_ON_BOARD_BASEADDR_IXP425;

	#if 0
	gBoardInfo.FlashSize = FLASH_TYPE_ON_BOARD_SIZE;
	gBoardInfo.FlashType = FLASH_TYPE_INTEL;
	#endif
		

}


/***********************************************************************/
/*                                                                     */
/*   InitBoard: Initialize the Yellowknife/Sandpoint hardware          */
/*                                                                     */
/***********************************************************************/
char * InitBoard(char * FreeMemPtr)
{
		int cpu;
		
		*((volatile unsigned int *)0xc8004004)=0x2080; /*initialize gpio*/
		*((volatile unsigned int *)0xc8004000)=0x0c00;

		*((volatile unsigned char *)0xc8004003)=0x01;

		

#if (BSP_USE_SERIAL_MUX == YES)
		{
		/*-----------------------------------------------------------------*/
		/* Initialize Serial Multiplexer								   */
		/*-----------------------------------------------------------------*/
		InitSerialMux();
		
		SetupPc16x50Driver();
		}
#endif
	/*---------------------------------------------------------------------*/
	/* Initialize the Realtime Clock									   */
	/*---------------------------------------------------------------------*/
		RtcDS1338Init();

		/*EnableMachineCheck();*/
		return SysInit(FreeMemPtr);
	}


/***********************************************************************/
/* SysInitFail: Report a system initalization failure                  */
/*                                                                     */
/* INPUTS:  string = pointer to text of message                        */
/* OUTPUTS: None                                                       */
/*                                                                     */
/* NOTE: Doesn't return.  Just continually prints the error message on */
/*       the serial channel once per second.                           */
/*                                                                     */
/***********************************************************************/
void SysInitFail(const char *string)
{
Print("\n\n\nsys init fail!\n\n\n");
while(1){}
}

void 	Init_Pci()
{

}