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authorGrant Likely <grant.likely@secretlab.ca>2007-10-01 07:46:55 +1000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2007-10-03 07:23:16 -0500
commitbedfc8a040378cb51f46155c980d295c2c397203 (patch)
tree1f1dfdf1c97e6ee125a91fafc25d6725b7a96afe /arch/ppc/boot
parent[POWERPC] Add treeImage to .gitignore (diff)
downloadlinux-dev-bedfc8a040378cb51f46155c980d295c2c397203.tar.xz
linux-dev-bedfc8a040378cb51f46155c980d295c2c397203.zip
[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>
Diffstat (limited to 'arch/ppc/boot')
-rw-r--r--arch/ppc/boot/simple/misc-embedded.c4
-rw-r--r--arch/ppc/boot/simple/uartlite_tty.c8
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/ppc/boot/simple/misc-embedded.c b/arch/ppc/boot/simple/misc-embedded.c
index 8a08ad397ed5..d5a00eb0e4eb 100644
--- a/arch/ppc/boot/simple/misc-embedded.c
+++ b/arch/ppc/boot/simple/misc-embedded.c
@@ -89,7 +89,9 @@ load_kernel(unsigned long load_addr, int num_words, unsigned long cksum, bd_t *b
* 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 0eae1eab38d4..ca1743e3e912 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)
{