On 2015-04-16 6:23 AM, Wouter van Rooy wrote:
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'm the proud owner of the bugzilla to document this process better,
so let's work through the issues and see if there's a bug, or something
that just isn't clearly described.
We are talking about the 1.6 release here .. so at least the recent changes
in kernel.bbclass processing won't be the cause of the breakage.
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.
Correct, and this definitely used to work. I can't see anything wrong by
inspection alone, but will launch some builds to see if I can confirm the
behaviour and that variable not making it down into the function call.
Bruce
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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