2 * (C) Copyright 2004 Atmark Techno, Inc.
4 * Yasushi SHOJI <yashi@atmark-techno.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #ifdef CONFIG_XILINX_UARTLITE
29 #include <asm/serial_xuartlite.h>
31 /* FIXME: we should convert these to in32 and out32 */
32 #define IO_WORD(offset) (*(volatile unsigned long *)(offset))
33 #define IO_SERIAL(offset) IO_WORD(CONFIG_SERIAL_BASE + (offset))
35 #define IO_SERIAL_RX_FIFO IO_SERIAL(XUL_RX_FIFO_OFFSET)
36 #define IO_SERIAL_TX_FIFO IO_SERIAL(XUL_TX_FIFO_OFFSET)
37 #define IO_SERIAL_STATUS IO_SERIAL(XUL_STATUS_REG_OFFSET)
38 #define IO_SERIAL_CONTROL IO_SERIAL(XUL_CONTROL_REG_OFFSET)
42 /* FIXME: Nothing for now. We should initialize fifo, etc */
46 void serial_setbrg(void)
48 /* FIXME: what's this for? */
51 void serial_putc(const char c)
53 if (c == '\n') serial_putc('\r');
54 while (IO_SERIAL_STATUS & XUL_SR_TX_FIFO_FULL);
55 IO_SERIAL_TX_FIFO = (unsigned char) (c & 0xff);
58 void serial_puts(const char * s)
67 while (!(IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA));
68 return IO_SERIAL_RX_FIFO & 0xff;
73 return (IO_SERIAL_STATUS & XUL_SR_RX_FIFO_VALID_DATA);
76 #endif /* CONFIG_MICROBLZE */