[Buildroot] [bug] bootwrapper runs before linking initrd
Hollis Blanchard
hollis_blanchard at mentor.com
Thu Sep 3 22:00:49 UTC 2015
I have a BR config that includes the following:
BR2_LINUX_KERNEL=y
BR2_TARGET_ROOTFS_INITRAMFS=y
BR2_TARGET_BOOT_WRAPPER_AARCH64=y
I expect that Buildroot will:
1. build the kernel
2. build rootfs.cpio
3. link rootfs.cpio into the kernel as an initrd
4. run boot-wrapper-aarch64 on the kernel+initrd
When I do a build, however, I can clearly see that step 4 happens before
step 3. In fact, "Rebuilding kernel with initramfs" is the very last
step of the build. "boot-wrapper-aarch64 Installing to images directory"
happened much earlier.
(Side note: the error is far more catastrophic than a simple "couldn't
find root filesystem" panic; it looks like big chunks of the kernel's
data section are zeroed, so that kernel messages aren't even logged, to
say nothing of no serial output. I don't know why this is.)
A workaround is to remember to manually "make
boot-wrapper-aarch64-rebuild" after a regular build has completed.
What's the real solution? Thanks!
--
Hollis Blanchard
Mentor Graphics Emulation Division
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