/* * (C) Copyright 2002 * Lineo, Inc <www.lineo.com> * Bernhard Kuhn <bkuhn@lineo.com> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Alex Zuepke <azu@sysgo.de> * * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * 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 * */#include <common.h>#include <asm/io.h>#include <asm/arch/hardware.h>#if !defined(CONFIG_DBGU) && !defined(CONFIG_USART0) && !defined(CONFIG_USART1)#error must define one of CONFIG_DBGU or CONFIG_USART0 or CONFIG_USART1#endif/* ggi thunder */#ifdef CONFIG_DBGUAT91PS_USART us = (AT91PS_USART) AT91C_BASE_DBGU;#endif#ifdef CONFIG_USART0AT91PS_USART us = (AT91PS_USART) AT91C_BASE_US0;#endif#ifdef CONFIG_USART1AT91PS_USART us = (AT91PS_USART) AT91C_BASE_US1;#endifvoid serial_setbrg (void){	DECLARE_GLOBAL_DATA_PTR;	int baudrate;	if ((baudrate = gd->baudrate) <= 0)		baudrate = CONFIG_BAUDRATE;	/* MASTER_CLOCK/(16 * baudrate) */	us->US_BRGR = (AT91C_MASTER_CLOCK >> 4) / (unsigned)baudrate;}int serial_init (void){	/* make any port initializations specific to this port */#ifdef CONFIG_DBGU	*AT91C_PIOA_PDR = AT91C_PA31_DTXD | AT91C_PA30_DRXD;	/* PA 31 & 30 */	*AT91C_PMC_PCER = 1 << AT91C_ID_SYS;	/* enable clock */#endif#ifdef CONFIG_USART0	*AT91C_PIOA_PDR = AT91C_PA17_TXD0 | AT91C_PA18_RXD0;	*AT91C_PMC_PCER |= 1 << AT91C_ID_USART0;	/* enable clock */#endif#ifdef CONFIG_USART1	*AT91C_PIOB_PDR = AT91C_PB21_TXD1 | AT91C_PB20_RXD1;	*AT91C_PMC_PCER |= 1 << AT91C_ID_USART1;	/* enable clock */#endif	serial_setbrg ();	us->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX;	us->US_CR = AT91C_US_RXEN | AT91C_US_TXEN;	us->US_MR =		(AT91C_US_CLKS_CLOCK | AT91C_US_CHRL_8_BITS |		 AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT);	us->US_IMR = ~0ul;	return (0);}void serial_putc (const char c){	if (c == '\n')		serial_putc ('\r');	while ((us->US_CSR & AT91C_US_TXRDY) == 0);	us->US_THR = c;}void serial_puts (const char *s){	while (*s) {		serial_putc (*s++);	}}int serial_getc (void){	while ((us->US_CSR & AT91C_US_RXRDY) == 0);	return us->US_RHR;}int serial_tstc (void){	return ((us->US_CSR & AT91C_US_RXRDY) == AT91C_US_RXRDY);}