From 4166ba3b2351aa72c372f66a54e9fb92cffbd230 Mon Sep 17 00:00:00 2001
From: Michal Simek <michal.simek@xilinx.com>
Date: Mon, 14 Dec 2015 16:55:10 +0100
Subject: serial: uartlite: Add support for debug console

Add support for debug console.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
---
 drivers/serial/serial_xuartlite.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'drivers/serial/serial_xuartlite.c')

diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index 157e14dedc..a2e9303925 100644
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -114,3 +114,29 @@ U_BOOT_DRIVER(serial_uartlite) = {
 	.ops	= &uartlite_serial_ops,
 	.flags = DM_FLAG_PRE_RELOC,
 };
+
+#ifdef CONFIG_DEBUG_UART_UARTLITE
+
+#include <debug_uart.h>
+
+static inline void _debug_uart_init(void)
+{
+	struct uartlite *regs = (struct uartlite *)CONFIG_DEBUG_UART_BASE;
+
+	out_be32(&regs->control, 0);
+	out_be32(&regs->control, ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
+	in_be32(&regs->control);
+}
+
+static inline void _debug_uart_putc(int ch)
+{
+	struct uartlite *regs = (struct uartlite *)CONFIG_DEBUG_UART_BASE;
+
+	while (in_be32(&regs->status) & SR_TX_FIFO_FULL)
+		;
+
+	out_be32(&regs->tx_fifo, ch & 0xff);
+}
+
+DEBUG_UART_FUNCS
+#endif
-- 
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