commit | 92111a942012a5a5b4f679ef5e5f460216de94e4 | [log] [tgz] |
---|---|---|
author | Junichi Uekawa <uekawa@google.com> | Wed May 18 07:58:47 2022 |
committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | Thu May 19 07:18:13 2022 |
tree | c5d97b701c5ca561bd76d968ae752d554fde42dd | |
parent | 081a8cf038dbc6fbe78dd0e338e6f5d85ca05d3d [diff] |
hypervisor: Simplify vvu-proxy-device path generation code. Add unit test. BUG=None TEST=make check Change-Id: I6e5729ddc2f78b15313df81114e49698a0c674b7 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/initramfs/+/3653776 Tested-by: Junichi Uekawa <uekawa@chromium.org> Commit-Queue: Junichi Uekawa <uekawa@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Build logic for creating standalone initramfs environments.
See the README files in the respective subdirs for more details.
Normally you wouldn't build in this directory directly. Instead, you would build the chromeos-initramfs package with the right USE flags. e.g.:
$ USE=recovery_ramfs emerge-$BOARD chromeos-initramfs
That will install the cpio initramfs files into the sysroot for you to build into a kernel directly. The various build scripts would then be used to make the right kernel/image using those (e.g. mod_image_for_recovery.sh).
You could build these by hand for quick testing. Inside the chroot:
$ make SYSROOT=/build/$BOARD BOARD=$BOARD <target>
That will create the cpio archives for you.
It is possible to debug few of the initramfs targets in QEMU. Read test/README.md for more information.
Also, here is a shortcut for developing/debugging graphical bits in initramfs, without having to create a full image for every iteration.
After emerge-$BOARD
, find your initramfs package from chroot /build/$BOARD/var/lib/initramfs
and copy to a running DUT, for example /tmp/recovery_ramfs.cpio.xz
, then do followings on DUT over SSH:
mkdir /usr/local/test/; cd /usr/local/test
xzcat /tmp/XXXXXX_ramfs.cpio.xz | toybox cpio -iv
stop ui; kill $(pidof frecon)
for d in dev proc sys tmp; do mount --bind /${d} /usr/local/test/${d} done
chroot /usr/local/test /init