diskimage-builder/diskimage_builder/elements/bootloader
Steve Baker a2cc17ad75 Fixes for centos-9-stream efi behaviour
This change removes the uninstall grub2-efi which was required for
prerelease rhel-9 images but now breaks current centos-9-stream
images. A different approach may be required for rhel-9 if the base
image remains different to centos-9-stream (such as populating the
empty /boot/efi partition from the base image)

This change also fixes the detection of whether this is an efi build
to check the block device instead of checking for whether a grub efi
package is installed. This fixes building a centos-9-stream whole-disk
image when package grub2-efi-x64 is installed but a legacy fallback
grub also needs to be installed.

Change-Id: I24baf553e1acd15a66737fc0b2a79d5335e28aa5
Partial-Bug: #1957789
2022-01-18 09:22:33 +13:00
..
environment.d update grub cmdline to current kernel parameters 2020-06-14 00:39:42 -05:00
finalise.d Fixes for centos-9-stream efi behaviour 2022-01-18 09:22:33 +13:00
pkg-map RHEL/Centos 9 does not have package grub2-efi-x64-modules 2021-09-13 09:32:53 +12:00
README.rst bootloader: remove extlinux/syslinux path 2021-05-13 10:33:06 +10:00

==========
bootloader
==========

Installs ``grub[2]`` on boot partition on the system.

Arguments
=========

* ``DIB_GRUB_TIMEOUT`` sets the ``grub`` menu timeout.  It defaults to
  5 seconds.  Set this to 0 (no timeout) for fast boot times.

* ``DIB_BOOTLOADER_DEFAULT_CMDLINE`` sets parameters that are appended
  to the ``GRUB_CMDLINE_LINUX_DEFAULT`` values in ``grub.cfg``
  configuration. It defaults to ``nofb nomodeset gfxpayload=text``.

* ``DIB_BOOTLOADER_SERIAL_CONSOLE`` sets the serial device to be
  used as a console. It defaults to ``hvc0`` for PowerPC, 
  ``ttyAMA0,115200`` for ARM64, otherwise ``ttyS0,115200``.