[PATCH] powerpc: Add CONFIG_DEFAULT_UIMAGE for embedded boards

Embedded boards that u-boot require a kernel image in the uImage format.
This allows a given board to specify it wants a uImage built by default.

This also fixes a warning at config time, as this symbol is referred
to in arch/powerpc/platforms/83xx/Kconfig.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 7 insertions, 0 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index df338c5cc910..80d114a3a837 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -83,6 +83,12 @@ config GENERIC_TBSYNC
         default y if PPC32 && SMP
         default n
 
+config DEFAULT_UIMAGE
+        bool
+        help
+          Used to allow a board to specify it wants a uImage built by default
+        default n
+
 menu "Processor support"
 choice
         prompt "Processor Type"
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 44dd82b791d1..15fc3e98ac5c 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -142,6 +142,7 @@ drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/
 # Default to zImage, override when needed
 defaultimage-y                  := zImage
 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
+defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
 KBUILD_IMAGE := $(defaultimage-y)
 all: $(KBUILD_IMAGE)