powerpc: Add a configuration option for early BootX/OpenFirmware debug

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 8 insertions, 1 deletions

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 863d877e0b5f..d86875f3e17e 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -147,6 +147,13 @@ choice
           enable debugging for the wrong type of machine your kernel
           _will not boot_.
 
+config PPC_EARLY_DEBUG_BOOTX
+        bool "BootX or OpenFirmware"
+        depends on BOOTX_TEXT
+        help
+          Select this to enable early debugging for a machine using BootX
+          or OpenFirmware.
+
 config PPC_EARLY_DEBUG_LPAR
         bool "LPAR HV Console"
         depends on PPC_PSERIES
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index 9d3fdcd66290..a15837519dca 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -50,7 +50,7 @@ void __init udbg_early_init(void)
         udbg_init_debug_beat();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_PAS_REALMODE)
         udbg_init_pas_realmode();
-#elif defined(CONFIG_BOOTX_TEXT)
+#elif defined(CONFIG_PPC_EARLY_DEBUG_BOOTX)
         udbg_init_btext();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_44x)
         /* PPC44x debug */