X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/92bb2596b1eda2324da82825b882df5dce9dfbbb..41506fc5c8cf80c1f1891e1d77f372b9bf5a9ba3:/lib/serial.c?ds=sidebyside

diff --git a/lib/serial.c b/lib/serial.c
index 5318c95..95d8300 100644
--- a/lib/serial.c
+++ b/lib/serial.c
@@ -1,3 +1,13 @@
+/* serial.c
+ * Serial output routines.
+ * NetWatch system management mode administration console
+ *
+ * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
+ * This program is free software; you can redistribute and/or modify it under
+ * the terms found in the file LICENSE in the root of this source tree.
+ *
+ */
+
 #include <minilib.h>
 #include <io.h>
 
@@ -33,10 +43,10 @@ unsigned char _inb(unsigned short port)
 void serial_init()
 {
 	unsigned short baud = SER_BAUD_REQ / SER_BAUD_BASE;
-	_outb(SER_LCR, inb(SER_LCR) | SER_LCR_DLAB);
+	_outb(SER_LCR, _inb(SER_LCR) | SER_LCR_DLAB);
 	_outb(SER_DLL, baud & 0xFF);
 	_outb(SER_DLM, baud >> 8);
-	_outb(SER_LCR, inb(SER_LCR) & ~SER_LCR_DLAB);
+	_outb(SER_LCR, _inb(SER_LCR) & ~SER_LCR_DLAB);
 	_outb(SER_IER, 0x0);
 	_outb(SER_FCR, 0x0);	/* FIFOs off */
 	_outb(SER_LCR, 0x03);	/* 8 data bits, one stop bit, no parity */
@@ -44,7 +54,9 @@ void serial_init()
 
 void serial_tx(unsigned char c)
 {
-	while (!(_inb(SER_LSR) & SER_LSR_THR_EMPTY))
+	int i = 100000;
+	
+	while (!(_inb(SER_LSR) & SER_LSR_THR_EMPTY) && (i--))
 		;
 	_outb(SER_THR, c);
 }