MIPS: Alchemy: debug output for compressed kernels

Hook up the compressed debug output for all Alchemy systems supported
by current kernel codebase.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/879/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 8 insertions, 0 deletions

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index b798830b7730..76d69303b833 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -36,6 +36,7 @@ KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
 obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
 
 obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
+obj-$(CONFIG_MACH_ALCHEMY)                 += $(obj)/uart-alchemy.o
 
 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
 $(obj)/vmlinux.bin: $(KBUILD_IMAGE)
diff --git a/arch/mips/boot/compressed/uart-alchemy.c b/arch/mips/boot/compressed/uart-alchemy.c
new file mode 100644
index 000000000000..1bff22fa089b
--- /dev/null
+++ b/arch/mips/boot/compressed/uart-alchemy.c
@@ -0,0 +1,7 @@
+#include <asm/mach-au1x00/au1000.h>
+
+void putc(char c)
+{
+        /* all current (Jan. 2010) in-kernel boards */
+        alchemy_uart_putchar(UART0_PHYS_ADDR, c);
+}