1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/serial.c b/drivers/serial.c
new file mode 100644
index 0000000..026acf9
--- /dev/null
+++ b/drivers/serial.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2000
+ * Rob Taylor, Flying Pig Systems. robt@flyingpig.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 <common.h>
+
+#ifdef CFG_PRINTF
+#ifdef CFG_NS16550_SERIAL
+
+#include <ns16550.h>
+#ifdef CFG_NS87308
+#include <ns87308.h>
+#endif
+
+#if CONFIG_CONS_INDEX == 1
+static NS16550_t console = (NS16550_t) CFG_NS16550_COM1;
+#elif CONFIG_CONS_INDEX == 2
+static NS16550_t console = (NS16550_t) CFG_NS16550_COM2;
+#elif CONFIG_CONS_INDEX == 3
+static NS16550_t console = (NS16550_t) CFG_NS16550_COM3;
+#elif CONFIG_CONS_INDEX == 4
+static NS16550_t console = (NS16550_t) CFG_NS16550_COM4;
+#else
+#error no valid console defined
+#endif
+
+static int calc_divisor (void)
+{
+	return (CFG_NS16550_CLK / 16 / CONFIG_BAUDRATE);
+}
+
+int serial_init (void)
+{
+	int clock_divisor = calc_divisor();
+
+#ifdef CFG_NS87308
+	initialise_ns87308();
+#endif
+
+	NS16550_init(console, clock_divisor);
+
+	return (0);
+}
+
+void
+serial_putc(const char c)
+{
+	if (c == '\n')
+		NS16550_putc(console, '\r');
+
+	NS16550_putc(console, c);
+}
+
+void
+serial_puts (const char *s)
+{
+	while (*s) {
+		serial_putc (*s++);
+	}
+}
+
+
+int
+serial_getc(void)
+{
+	return NS16550_getc(console);
+}
+
+int
+serial_tstc(void)
+{
+	return NS16550_tstc(console);
+}
+
+void
+serial_setbrg (void)
+{
+	int clock_divisor;
+
+    clock_divisor = calc_divisor();
+	NS16550_reinit(console, clock_divisor);
+}
+
+#endif
+#endif