Hello,
For the last week or so I have been struggling to build a kernel image with an
embedded initramfs using the mechanisms provided by Poky Daisy. In local.conf I
have set INITRAMFS_IMAGE_BUNDLE to "1" and INITRAMFS_IMAGE to the name of my
image recipe. When I try to build virtual/kernel no errors are shown, but the
resulting kernel image does not contain an initramfs either.
I have traced this issue to the passing of the $use_alternate_initrd variable
in kernel.bbclass. The run.do_bundle_initramfs log contains the following
snippets:
Lines 103..120:
do_bundle_initramfs() {
if [ ! -z "sytxg1-bootmode-image" -a x"1" = x1 ]; then
echo "Creating a kernel image with a bundled initramfs..."
copy_initramfs
if [ -e arch/powerpc/boot/uImage ] ; then
mv -f arch/powerpc/boot/uImage
arch/powerpc/boot/uImage.bak
fi
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=/home/wouter/Source/Product/sytxg1-boot/tmp/work/sytxg1-oe-linux/linux-axon/3.10-9/linux-3.10.9/usr/sytxg1-bootmode-image-sytxg1.cpio
kernel_do_compile
mv -f arch/powerpc/boot/uImage
arch/powerpc/boot/uImage.initramfs
mv -f arch/powerpc/boot/uImage.bak arch/powerpc/boot/uImage
# Update install area
echo "There is kernel image bundled with initramfs:
/home/wouter/Source/Product/sytxg1-boot/tmp/work/sytxg1-oe-linux/linux-axon/3.10-9/linux-3.10.9/arch/powerpc/boot/uImage.initramfs"
install -m 0644
/home/wouter/Source/Product/sytxg1-boot/tmp/work/sytxg1-oe-linux/linux-axon/3.10-9/linux-3.10.9/arch/powerpc/boot/uImage.initramfs
/home/wouter/Source/Product/sytxg1-boot/tmp/work/sytxg1-oe-linux/linux-axon/3.10-9/image/boot/uImage-initramfs-sytxg1.bin
echo
"/home/wouter/Source/Product/sytxg1-boot/tmp/work/sytxg1-oe-linux/linux-axon/3.10-9/linux-3.10.9/arch/powerpc/boot/uImage.initramfs"
fi
}
Lines 164..171:
kernel_do_compile() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
oe_runmake uImage CC="powerpc-oe-linux-gcc "
LD="powerpc-oe-linux-ld.bfd "
if test "uImage.gz" = "uImage"; then
gzip -9c < "uImage" > "arch/powerpc/boot/uImage"
fi
}
So, it seems that although do_bundle_initramfs() sets the $use_alternate_initrd
to the correct value it is not passed in the oe_runmake call in
kernel_do_compile(). Judging from the contents of kernel.bbclass I would expect
it to be appended after the LD="..." statement. For now I have found a
workaround by copying the relevant oe_runmake call to do_bundle_initramfs().
The patch is included below.
I cannot imagine this is the intended way to make things work. Could anyone
please shed some light on what I am doing wrong in this matter?
Kind regards,
Wouter van Rooy
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 19b159b..224e01e 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -131,8 +131,11 @@ do_bundle_initramfs () {
if [ -e ${KERNEL_OUTPUT} ] ; then
mv -f ${KERNEL_OUTPUT} ${KERNEL_OUTPUT}.bak
fi
-
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio
- kernel_do_compile
+ unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
+ oe_runmake ${KERNEL_IMAGETYPE_FOR_MAKE} ${KERNEL_ALT_IMAGETYPE}
CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS}
CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio
+ if test "${KERNEL_IMAGETYPE_FOR_MAKE}.gz" =
"${KERNEL_IMAGETYPE}"; then
+ gzip -9c < "${KERNEL_IMAGETYPE_FOR_MAKE}" >
"${KERNEL_OUTPUT}"
+ fi
mv -f ${KERNEL_OUTPUT} ${KERNEL_OUTPUT}.initramfs
mv -f ${KERNEL_OUTPUT}.bak ${KERNEL_OUTPUT}
# Update install area
@@ -150,20 +153,7 @@ addtask bundle_initramfs after do_install before do_deploy
kernel_do_compile() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
- # The $use_alternate_initrd is only set from
- # do_bundle_initramfs() This variable is specifically for the
- # case where we are making a second pass at the kernel
- # compilation and we want to force the kernel build to use a
- # different initramfs image. The way to do that in the kernel
- # is to specify:
- # make ...args... CONFIG_INITRAMFS_SOURCE=some_other_initramfs.cpio
- if [ "$use_alternate_initrd" = "" ] && [ "${INITRAMFS_TASK}" != "" ] ;
then
- # The old style way of copying an prebuilt image and building it
- # is turned on via INTIRAMFS_TASK != ""
- copy_initramfs
-
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio
- fi
- oe_runmake ${KERNEL_IMAGETYPE_FOR_MAKE} ${KERNEL_ALT_IMAGETYPE}
CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
+ oe_runmake ${KERNEL_IMAGETYPE_FOR_MAKE} ${KERNEL_ALT_IMAGETYPE}
CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS}
if test "${KERNEL_IMAGETYPE_FOR_MAKE}.gz" = "${KERNEL_IMAGETYPE}"; then
gzip -9c < "${KERNEL_IMAGETYPE_FOR_MAKE}" > "${KERNEL_OUTPUT}"
fi
--
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