powerpc: gamecube/wii: early debugging using usbgecko

Add support for using the USB Gecko adapter as an early debugging
console on the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 3b1005185390..11e385bd2b3d 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -254,6 +254,14 @@ config PPC_EARLY_DEBUG_CPM
           using a CPM-based serial port.  This assumes that the bootwrapper
           has run, and set up the CPM in a particular way.
 
+config PPC_EARLY_DEBUG_USBGECKO
+        bool "Early debugging through the USB Gecko adapter"
+        depends on GAMECUBE_COMMON
+        select USBGECKO_UDBG
+        help
+          Select this to enable early debugging for Nintendo GameCube/Wii
+          consoles via an external USB Gecko adapter.
+
 endchoice
 
 config PPC_EARLY_DEBUG_44x_PHYSLOW