aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/mips-boards/sim/sim_console.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mips-boards/sim/sim_console.c')
-rw-r--r--arch/mips/mips-boards/sim/sim_console.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/sim/sim_console.c b/arch/mips/mips-boards/sim/sim_console.c
new file mode 100644
index 00000000000..de595a9ccb2
--- /dev/null
+++ b/arch/mips/mips-boards/sim/sim_console.c
@@ -0,0 +1,40 @@
+/*
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
+ * Copyright (C) 2007 MIPS Technologies, Inc.
+ * written by Ralf Baechle
+ */
+#include <linux/init.h>
+#include <linux/serial_reg.h>
+#include <asm/io.h>
+
+static inline unsigned int serial_in(int offset)
+{
+ return inb(0x3f8 + offset);
+}
+
+static inline void serial_out(int offset, int value)
+{
+ outb(value, 0x3f8 + offset);
+}
+
+void __init prom_putchar(char c)
+{
+ while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0)
+ ;
+
+ serial_out(UART_TX, c);
+}