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authorJason Wessel <jason.wessel@windriver.com>2013-08-22 18:04:27 -0500
committerRichard Purdie <richard.purdie@linuxfoundation.org>2013-09-06 23:01:50 +0100
commit609d5a9ab9e58bb1c2bcc2145399fbc8b701b85a (patch)
treeafe2974a64cbd58c430213d0751171396dd70c56 /meta/conf/local.conf.sample
parent8a726d14a345ef35c6d8d8e369bf3691cee879bf (diff)
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kernel.bbclass, image.bbclass: Implement kernel INITRAMFS dependency and bundling
This patch aims to fix the following two cases for the INITRAMFS generation. 1) Allow an image recipe to specify a paired INITRAMFS recipe such as core-image-minimal-initramfs. This allows building a base image which always generates the needed initramfs image in one step 2) Allow building a single binary which contains a kernel and the initramfs. A key requirement of the initramfs is to be able to add kernel modules. The current implementation of the INITRAMFS_IMAGE variable has a circular dependency when using kernel modules in the initramfs image.bb file that is caused by kernel.bbclass trying to build the initramfs before the kernel's do_install rule. The solution for this problem is to have the kernel's do_bundle_initramfs_image task depend on the do_rootfs from the INITRAMFS_IMAGE and not some intermediate point. The image.bbclass will also sets up dependencies to make the initramfs creation task run last. The code to bundle the kernel and initramfs together has been added. At a high level, all it is doing is invoking a second compilation of the kernel but changing the value of CONFIG_INITRAMFS_SOURCE to point to the generated initramfs from the image recipe. [YOCTO #4072] Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>
Diffstat (limited to 'meta/conf/local.conf.sample')
-rw-r--r--meta/conf/local.conf.sample1
1 files changed, 1 insertions, 0 deletions
diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample
index 2b078d081e..4030492c89 100644
--- a/meta/conf/local.conf.sample
+++ b/meta/conf/local.conf.sample
@@ -145,6 +145,7 @@ EXTRA_IMAGE_FEATURES = "debug-tweaks"
# NOTE: mklibs also needs to be explicitly enabled for a given image, see local.conf.extended
USER_CLASSES ?= "buildstats image-mklibs image-prelink"
+
#
# Runtime testing of images
#