[POWERPC] Uartlite: Flush RX fifo in bootwrapper
Flush the uartlite RX fifo so that characters typed before entry into
the zImage wrapper do not muck up the kernel command line.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/ppc/boot/simple/misc-embedded.c b/arch/ppc/boot/simple/misc-embedded.c
index 8a08ad3..d5a00eb 100644
--- a/arch/ppc/boot/simple/misc-embedded.c
+++ b/arch/ppc/boot/simple/misc-embedded.c
@@ -89,7 +89,9 @@
* initialize the serial console port.
*/
embed_config(&bp);
-#if defined(CONFIG_SERIAL_CPM_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE)
+#if defined(CONFIG_SERIAL_CPM_CONSOLE) || \
+ defined(CONFIG_SERIAL_8250_CONSOLE) || \
+ defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
com_port = serial_init(0, bp);
#endif
diff --git a/arch/ppc/boot/simple/uartlite_tty.c b/arch/ppc/boot/simple/uartlite_tty.c
index 0eae1ea..ca1743e 100644
--- a/arch/ppc/boot/simple/uartlite_tty.c
+++ b/arch/ppc/boot/simple/uartlite_tty.c
@@ -16,6 +16,14 @@
#define UARTLITE_BASEADDR ((void*)(XPAR_UARTLITE_0_BASEADDR))
+unsigned long
+serial_init(int chan, void *ignored)
+{
+ /* Clear the RX FIFO */
+ out_be32(UARTLITE_BASEADDR + 0x0C, 0x2);
+ return 0;
+}
+
void
serial_putc(unsigned long com_port, unsigned char c)
{
