debug-sa1110.c

PXA250上的XBOOT

/* 
 * $Id: debug-sa1110.c,v 1.1 2002/12/05 22:20:38 telka Exp $
 *
 * Copyright (C) 2001, 2002 ETC s.r.o.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * Written by Marcel Telka <[e-mail]>, 2001, 2002.
 *
 */

#include "board.h"

#if CPU == SA1110

#include <_windows.h>
#include <nkintr.h>

#include <sa11x0/gpio.h>
#include <sa11x0/uart.h>
#include <sa11x0/hssp.h>

#include "debug.h"

#define	NONE	0
#define	UART2	2
#define	UART3	3

/* select debug port */
#if (WID != EP202)
#define	DEBUG_PORT	UART3
#else /* WID == EP202 */
#define	DEBUG_PORT	UART2
#endif

/* Pointer to UART registers */
#if DEBUG_PORT == UART2
#	define	UART_pointer	UART2_pointer
#elif DEBUG_PORT == UART3
#	define	UART_pointer	UART3_pointer
#endif

/* wait for transmit all data in tx FIFO through debug serial port */
void
OEMFlushDebugSerial( void )
{
#if (DEBUG_PORT != NONE)
	while (UTSR1 & 0x1) ;
#endif /* (DEBUG_PORT != NONE) */
}

#if (DEBUG_PORT != NONE)
static uint32_t save_gpdr;
#endif /* (DEBUG_PORT != NONE) */

void
OEMInitDebugSerial( void )
{
#if (DEBUG_PORT == UART2)
	HSCR0 = 0x00000000;			/* enable UART engine */
	UTCR4 = 0x00000000;			/* functions as normal UART */
#endif /* (DEBUG_PORT == UART2) */

#if (DEBUG_PORT != NONE)
	UTSR0 = 0xFF;
	UTCR0 = 0x08;
	UTCR3 = 0x00;

	UTCR1 = 0x00;
	UTCR2 = 0x01;				/* 0x17: 9600, 0x0b: 19200, 0x05: 38400, 0x03: 57600,
						   0x01: 115200 baud */
	save_gpdr = GPDR;

#if (DEBUG_PORT == UART3)
#if (WID == EI370)
	GPDR |= GPIO_BCR_MASK | GPIO_BCR2_MASK;
	GPSR = GPIO_BCR2_MASK;
	GPCR = GPIO_BCR_MASK;
#elif (WID == EP002)
	GPDR |= GPIO_BCR_MASK;
	GPSR = GPIO_BCR_MASK;
#endif
#endif /* (DEBUG_PORT == UART3) */

#if (DEBUG_PORT == UART2) && (WID == EP202)
	GPDR |= GPIO_BCS_MASK | GPIO_ISD_MASK;
	GPSR = GPIO_ISD_MASK;
	GPCR = GPIO_BCS_MASK;
#endif

	UTCR3 = 0x03;
#endif /* (DEBUG_PORT != NONE) */
}

void
OEMDeinitDebugSerial( void )
{
#if (DEBUG_PORT != NONE)
	UTCR3 = 0x00;

	GPDR = save_gpdr;
#endif /* (DEBUG_PORT != NONE) */
}

void
OEMWriteDebugByte( BYTE ch )
{
#if (DEBUG_PORT != NONE)
	while (!(UTSR1 & 0x04)) ;
	UTDR = ch;
#endif /* (DEBUG_PORT != NONE) */
}

int
OEMReadDebugByte( void )
{
#if (DEBUG_PORT != NONE)
	int data;
	if (!(UTSR1 & 0x2))
		return OEM_DEBUG_READ_NODATA;
	data = UTDR;
	if (data & 0x700)
		return OEM_DEBUG_COM_ERROR;
	return data;
#else /* (DEBUG_PORT != NONE) */
	return OEM_DEBUG_READ_NODATA;
#endif /* (DEBUG_PORT != NONE) */
}

#endif /* CPU == SA1110 */