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/*
* (C) Copyright 2004 Atmark Techno, Inc.
*
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <config.h>
#ifdef XILINX_UARTLITE
#include <asm/serial_xuartlite.h>
/* FIXME: we should convert these to in32 and out32 */
#define IO_WORD(offset) (*(volatile unsigned long *)(offset))
#define IO_SERIAL(offset) IO_WORD(CONFIG_SERIAL_BASE + (offset))
#define IO_SERIAL_RX_FIFO IO_SERIAL(XUL_RX_FIFO_OFFSET)
#define IO_SERIAL_TX_FIFO IO_SERIAL(XUL_TX_FIFO_OFFSET)
#define IO_SERIAL_STATUS IO_SERIAL(XUL_STATUS_REG_OFFSET)
#define IO_SERIAL_CONTROL IO_SERIAL(XUL_CONTROL_REG_OFFSET)
int serial_init(void)
{
/* FIXME: Nothing for now. We should initialize fifo, etc */
return 0;
}
void serial_setbrg(void)
{
/* FIXME: what's this for? */
}
void serial_putc(const char c)
{
if (c == '\n') serial_putc('\r');
while (IO_SERIAL_STATUS & XUL_SR_TX_FIFO_FULL);
IO_SERIAL_TX_FIFO = (unsigned char) (c & 0xff);
}
void serial_puts(const char * s)
{
while (*s) {
serial_putc(*s++);
}
}
int serial_getc(void)
{
while (!(IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA));
return IO_SERIAL_RX_FIFO & 0xff;
}
int serial_tstc(void)
{
return (IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA);
}
#endif /* CONFIG_MICROBLZE */
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