recovery: Replace hardcoded device-mapper major

Replace hardcoded device-mapper major to account for the new device
driver NVMe, which is now the block device driver with major 254.

BUG=chromium:676692
TEST=Recovery logs show the device mapper successfully configured.

Change-Id: Ifc4d42c59c28587057cfbf86a0969c9b17977c5e
Reviewed-on: https://chromium-review.googlesource.com/431580
Commit-Ready: Alexis Savery <asavery@chromium.org>
Tested-by: Alexis Savery <asavery@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed
tree: 7bd75a5ce3f4fa67da89c34227eb003b78ea85dc
  1. common/
  2. factory_netboot/
  3. factory_shim/
  4. loader_kernel/
  5. recovery/
  6. test/
  7. .gitignore
  8. LICENSE
  9. Makefile
  10. OWNERS
  11. README.md
README.md

Chromium OS initramfs

Build logic for creating standalone initramfs environments.

See the README files in the respective subdirs for more details.

To Use

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).

To Make

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.