1 files changed, 77 insertions, 0 deletions
diff --git a/u-boot/drivers/serial/serial_xuartlite.c b/u-boot/drivers/serial/serial_xuartlite.c
new file mode 100644
index 0000000..00d0eaa
--- /dev/null
+++ b/u-boot/drivers/serial/serial_xuartlite.c
@@ -0,0 +1,77 @@
+/*
+ * (C) Copyright 2008 Michal Simek <monstr@monstr.eu>
+ * Clean driver and add xilinx constant from header file
+ *
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ * Yasushi SHOJI <yashi@atmark-techno.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 <config.h>
+#include <asm/io.h>
+
+#define RX_FIFO_OFFSET		0 /* receive FIFO, read only */
+#define TX_FIFO_OFFSET		4 /* transmit FIFO, write only */
+#define STATUS_REG_OFFSET	8 /* status register, read only */
+
+#define SR_TX_FIFO_FULL		0x08 /* transmit FIFO full */
+#define SR_RX_FIFO_VALID_DATA	0x01 /* data in receive FIFO */
+#define SR_RX_FIFO_FULL		0x02 /* receive FIFO full */
+
+#define UARTLITE_STATUS		(CONFIG_SERIAL_BASE + STATUS_REG_OFFSET)
+#define UARTLITE_TX_FIFO	(CONFIG_SERIAL_BASE + TX_FIFO_OFFSET)
+#define UARTLITE_RX_FIFO	(CONFIG_SERIAL_BASE + RX_FIFO_OFFSET)
+
+int serial_init(void)
+{
+	/* FIXME: Nothing for now. We should initialize fifo, etc */
+	return 0;
+}
+
+void serial_setbrg(void)
+{
+	/* FIXME: what's this for? */
+}
+
+void serial_putc(const char c)
+{
+	if (c == '\n')
+		serial_putc('\r');
+	while (in_be32((u32 *) UARTLITE_STATUS) & SR_TX_FIFO_FULL);
+	out_be32((u32 *) UARTLITE_TX_FIFO, (unsigned char) (c & 0xff));
+}
+
+void serial_puts(const char * s)
+{
+	while (*s) {
+		serial_putc(*s++);
+	}
+}
+
+int serial_getc(void)
+{
+	while (!(in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA));
+	return in_be32((u32 *) UARTLITE_RX_FIFO) & 0xff;
+}
+
+int serial_tstc(void)
+{
+	return (in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA);
+}