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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | /* * (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" DECLARE_GLOBAL_DATA_PTR; #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) { #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) { galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate); } #else /* ! CONFIG_MPSC */ int serial_init (void) { 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) { 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 defined(CONFIG_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 |