cinit.c

AT91所有开发板的资料 AT91所有开发板的资料

/**************************************************************************
 *
 * ARM - Strategic Support Group
 *
 ***************************************************************************/

/***************************************************************************
 *
 * Module		: cinit.c
 * Description 	: The C Initializer is designed to initialize the interrupts 
 *				  and set off task A. 
 *
 * Tool Chain	: ARM Developers Suite 1.0
 * Platform		: Evaluator7T
 * History		:
 *
 *				990929 ASloss
 *				- started working on cinit.c for AEB-1 	
 *
 *				2000-03-26 Andrew N. Sloss
 *				- ported to Evaluator7T
 *
 **************************************************************************/

/**************************************************************************
 * IMPORTS
 **************************************************************************/

#include <stdio.h>
#include <assert.h>
#include <time.h>

#include "taska.h"
#include "led.h"
#include "timer.h"
#include "irq.h"

/**************************************************************************
 * MACROS
 **************************************************************************/

#define		angel_SWI	0x123456

/**************************************************************************
 * MISC
 **************************************************************************/

// -- angle SWI Note: remove if program is for standalone mode....

__swi (angel_SWI) void _WriteC(unsigned op, const char *c);
#define WriteC(c) _WriteC (0x3,c)

/**************************************************************************
 * DATATYPES
 **************************************************************************/

// none...

/**************************************************************************
 * STATICS
 **************************************************************************/

// none...
	
/**************************************************************************
 * ROUTINUES
 **************************************************************************/

/* -- cinit_print ---------------------------------------------------------
 *
 * Description	: prints information out to the console of the debugger
 *
 * Parameters	: string - string to be printed out to the console.
 * Return		: none...
 * Notes		: 
 *
 */

void cinit_print (const char *string)
{ 
int pos = 0;

	  while (string[pos] != 0) WriteC(&string[pos++]);
}

/* -- C_Entry --------------------------------------------------------------
 *
 * Description	: entry point for switch
 * 
 * Parameters	: none...
 * Return		: Should Exit with the correct SWI...
 * Notes		: none...
 *
 */

void cinit_banner (void)
{
	// --  banner ...............................................
	
	cinit_print ("\n    -- remove the serial cable from the board \n\n");	
	cinit_print ("\n    ********************************************* \n");
	cinit_print ("    *** Remember to RESET the board after USE *** \n");
	cinit_print ("    ********************************************* \n");
}

/* -- cinit_init --------------------------------------------------------
 *
 * Description	: Initializes the LED's on the Evaluator7T board to be 
 *                OFF. Setup the internal GLOBALS to indicate that the 
 *                LED's are OFF.
 *
 * Parameters	: none...
 * Return	: none...
 * Notes	: none...
 *		  
 */

void cinit_init (void)
{
	// -- init internal ..........................................

	// <add USER initialization code here>

	// -- init hardware ..........................................
	
	cinit_banner 	();
	
	irq_init  		();
	timer_start 	();
}

/* -- C_Entry --------------------------------------------------------------
 *
 * Description	: entry point for tasker
 * 
 * Parameters	: none...
 * Return	: return 1 if successful
 * Notes	: none...
 *
 */

int C_Entry ( void )
{	
	// -- initialize all internal structures .......................

	cinit_init    	();
	
	__asm {
	MRS			r1,CPSR
	ORR			r1,r1,#0x10
	MSR 		CPSR_c,r1
	}
	
	taska_process 	();  // start with process A

	// 
	// *** Should never reach this code ***
	//

	return 0;
}

/**************************************************************************
 * End of cinit.c
 **************************************************************************/