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authorSimon Glass <sjg@chromium.org>2011-10-03 19:26:46 +0000
committerWolfgang Denk <wd@denx.de>2011-10-17 23:56:58 +0200
commit7accb6ea56738adb538eedbe19d5089624cf8860 (patch)
tree4be538163cc8285e9592ac4fa014e7caf94fb8e1 /drivers/serial/sandbox.c
parentbace3d00f28040f061e0e21126bc70cfb9d20930 (diff)
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sandbox: Add serial uart
This uart simply writes to stdout and reads from stdin. We might imagine instead buffering the data so that a test interface can check output and inject input. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial/sandbox.c')
-rw-r--r--drivers/serial/sandbox.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/serial/sandbox.c b/drivers/serial/sandbox.c
new file mode 100644
index 0000000..0d65587
--- /dev/null
+++ b/drivers/serial/sandbox.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * 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
+ */
+
+/*
+ * This provide a test serial port. It provides an emulated serial port where
+ * a test program and read out the serial output and inject serial input for
+ * U-Boot.
+ */
+
+#include <common.h>
+#include <os.h>
+
+int serial_init(void)
+{
+ return 0;
+}
+
+void serial_setbrg(void)
+{
+}
+
+void serial_putc(const char ch)
+{
+ os_write(1, &ch, 1);
+}
+
+void serial_puts(const char *str)
+{
+ while (*str)
+ serial_putc(*str++);
+}
+
+int serial_getc(void)
+{
+ char buf;
+ int count;
+
+ count = os_read(0, &buf, 1);
+ return count == 1 ? buf : 0;
+}
+
+int serial_tstc(void)
+{
+ return 0;
+}