/* * (C) Copyright 2001 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. * * 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 */ /* * serial.c - serial support for the gal ev board */ /* supports both the 16650 duart and the MPSC */ #include <common.h> #include <command.h> #include <galileo/memory.h> #if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2) #include <ns16550.h> #endif #include "serial.h" #include "mpsc.h" #if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2) const NS16550_t COM_PORTS[] = { (NS16550_t) CFG_NS16550_COM1, (NS16550_t) CFG_NS16550_COM2 }; #endif #ifdef CONFIG_MPSC int serial_init (void) { DECLARE_GLOBAL_DATA_PTR; #if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2) int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate; #endif mpsc_init(gd->baudrate); /* init the DUART chans so that KGDB in the kernel can use them */ #ifdef CFG_INIT_CHAN1 NS16550_reinit(COM_PORTS[0], clock_divisor); #endif #ifdef CFG_INIT_CHAN2 NS16550_reinit(COM_PORTS[1], clock_divisor); #endif return (0); } void serial_putc(const char c) { if (c == '\n') mpsc_putchar('\r'); mpsc_putchar(c); } int serial_getc(void) { return mpsc_getchar(); } int serial_tstc(void) { return mpsc_test_char(); } void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate); } #else /* ! CONFIG_MPSC */ int serial_init (void) { DECLARE_GLOBAL_DATA_PTR; int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate; #ifdef CFG_INIT_CHAN1 (void)NS16550_init(COM_PORTS[0], clock_divisor); #endif #ifdef CFG_INIT_CHAN2 (void)NS16550_init(COM_PORTS[1], clock_divisor); #endif return (0); } void serial_putc(const char c) { if (c == '\n') NS16550_putc(COM_PORTS[CFG_DUART_CHAN], '\r'); NS16550_putc(COM_PORTS[CFG_DUART_CHAN], c); } int serial_getc(void) { return NS16550_getc(COM_PORTS[CFG_DUART_CHAN]); } int serial_tstc(void) { return NS16550_tstc(COM_PORTS[CFG_DUART_CHAN]); } void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate; #ifdef CFG_INIT_CHAN1 NS16550_reinit(COM_PORTS[0], clock_divisor); #endif #ifdef CFG_INIT_CHAN2 NS16550_reinit(COM_PORTS[1], clock_divisor); #endif } #endif /* CONFIG_MPSC */ void serial_puts (const char *s) { while (*s) { serial_putc (*s++); } } #if (CONFIG_COMMANDS & CFG_CMD_KGDB) void kgdb_serial_init(void) { } void putDebugChar (int c) { serial_putc (c); } void putDebugStr (const char *str) { serial_puts (str); } int getDebugChar (void) { return serial_getc(); } void kgdb_interruptible (int yes) { return; } #endif /* CFG_CMD_KGDB */