[POWERPC] Add udbg support for RTAS console

Add udbg hooks for the RTAS console, based on the RTAS put-term-char
and get-term-char calls. Along with my previous patches, this should
enable debugging as soon as early_init_dt_scan_rtas() is called.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index c69006ae8246..e29ef77d3b00 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -134,12 +134,19 @@ config PPC_EARLY_DEBUG_G5
         help
           Select this to enable early debugging for Apple G5 machines.
 
-config PPC_EARLY_DEBUG_RTAS
+config PPC_EARLY_DEBUG_RTAS_PANEL
         bool "RTAS Panel"
         depends on PPC_RTAS
         help
           Select this to enable early debugging via the RTAS panel.
 
+config PPC_EARLY_DEBUG_RTAS_CONSOLE
+        bool "RTAS Console"
+        depends on PPC_RTAS
+        select UDBG_RTAS_CONSOLE
+        help
+          Select this to enable early debugging via the RTAS console.
+
 config PPC_EARLY_DEBUG_MAPLE
         bool "Maple real mode"
         depends on PPC_MAPLE