[PATCH V3] kernel bbclass: Recreate uImage only when KEEPUIMAGE != "yes"

[Khem Raj <raj.khem@gmail.com>]

From: Koen Kooi <koen@dominion.thruhere.net>

The intent of the uImage code in this class includes the following

1) be able to specify custom load addresses without needing to patch the kernel
2) add better information to the uImage description field

The current state is a NOP anyway, the kernel will always build a uImage when you tell it to 'make uImage'.

weakly Set KEEPUIMAGE to 'yes' in default-distrovars.inc which preserve the
current OE-Core behavior. Machines which are being ported from oe.dev and need to
regenerate uImage can set this to be empty

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/classes/kernel.bbclass                     |    2 +-
 meta/conf/distro/include/default-distrovars.inc |    1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index ce4d7de..ab984e3 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -507,7 +507,7 @@ KERNEL_IMAGE_SYMLINK_NAME ?= "${KERNEL_IMAGETYPE}-${MACHINE}"
 
 do_uboot_mkimage() {
 	if test "x${KERNEL_IMAGETYPE}" = "xuImage" ; then 
-		if test ! -e arch/${ARCH}/boot/uImage ; then
+		if test "x${KEEPUIMAGE}" != "xyes" ; then
 			ENTRYPOINT=${UBOOT_ENTRYPOINT}
 			if test -n "${UBOOT_ENTRYSYMBOL}"; then
 				ENTRYPOINT=`${HOST_PREFIX}nm ${S}/vmlinux | \
diff --git a/meta/conf/distro/include/default-distrovars.inc b/meta/conf/distro/include/default-distrovars.inc
index f770919..ef8232d 100644
--- a/meta/conf/distro/include/default-distrovars.inc
+++ b/meta/conf/distro/include/default-distrovars.inc
@@ -2,6 +2,7 @@ QA_LOGFILE = "${TMPDIR}/qa.log"
 
 OEINCLUDELOGS ?= "yes"
 KERNEL_CONSOLE ?= "ttyS0"
+KEEPUIMAGE ??= "yes"
 
 PCMCIA_MANAGER ?= "pcmciautils"
 
-- 
1.7.9.5