mirror of
https://github.com/AsahiLinux/u-boot
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185 lines
3.4 KiB
C
185 lines
3.4 KiB
C
/*
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* (C) Copyright 2001
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* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* serial.c - serial support for the gal ev board
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*/
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/* supports both the 16650 duart and the MPSC */
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#include <common.h>
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#include <command.h>
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#include <galileo/memory.h>
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#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
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#include <ns16550.h>
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#endif
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#include "serial.h"
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#include "mpsc.h"
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DECLARE_GLOBAL_DATA_PTR;
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#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
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const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1,
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(NS16550_t) CONFIG_SYS_NS16550_COM2 };
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#endif
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#ifdef CONFIG_MPSC
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int serial_init (void)
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{
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#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
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int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
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#endif
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mpsc_init(gd->baudrate);
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/* init the DUART chans so that KGDB in the kernel can use them */
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#ifdef CONFIG_SYS_INIT_CHAN1
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NS16550_reinit(COM_PORTS[0], clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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NS16550_reinit(COM_PORTS[1], clock_divisor);
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#endif
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return (0);
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}
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void
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serial_putc(const char c)
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{
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if (c == '\n')
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mpsc_putchar('\r');
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mpsc_putchar(c);
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}
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int
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serial_getc(void)
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{
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return mpsc_getchar();
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}
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int
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serial_tstc(void)
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{
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return mpsc_test_char();
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}
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void
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serial_setbrg (void)
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{
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galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate);
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}
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#else /* ! CONFIG_MPSC */
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int serial_init (void)
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{
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int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
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#ifdef CONFIG_SYS_INIT_CHAN1
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(void)NS16550_init(COM_PORTS[0], clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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(void)NS16550_init(COM_PORTS[1], clock_divisor);
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#endif
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return (0);
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}
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void
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serial_putc(const char c)
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{
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if (c == '\n')
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NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
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NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
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}
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int
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serial_getc(void)
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{
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return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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int
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serial_tstc(void)
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{
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return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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void
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serial_setbrg (void)
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{
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int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
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#ifdef CONFIG_SYS_INIT_CHAN1
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NS16550_reinit(COM_PORTS[0], clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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NS16550_reinit(COM_PORTS[1], clock_divisor);
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#endif
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}
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#endif /* CONFIG_MPSC */
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void
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serial_puts (const char *s)
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{
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while (*s) {
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serial_putc (*s++);
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}
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}
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#if defined(CONFIG_CMD_KGDB)
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void
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kgdb_serial_init(void)
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{
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}
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void
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putDebugChar (int c)
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{
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serial_putc (c);
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}
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void
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putDebugStr (const char *str)
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{
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serial_puts (str);
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}
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int
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getDebugChar (void)
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{
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return serial_getc();
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}
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void
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kgdb_interruptible (int yes)
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{
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return;
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}
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#endif
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