diskimage-builder/diskimage_builder/elements/bootloader
Matthew Thode 52a8b2fa01
update grub cmdline to current kernel parameters
vga=normal is depreciated, use gfxpayload=text instead

Change-Id: I2e5be3b07acce14a9f3d47e24938d9da3c5b6c48
2020-06-14 00:39:42 -05:00
..
cleanup.d update grub cmdline to current kernel parameters 2020-06-14 00:39:42 -05:00
environment.d update grub cmdline to current kernel parameters 2020-06-14 00:39:42 -05:00
finalise.d bootloader: make serial console configurable 2019-10-03 21:49:53 +00:00
pkg-map Add grub-efi-x86_64 pkg-map 2019-11-16 21:15:28 -05:00
README.rst update grub cmdline to current kernel parameters 2020-06-14 00:39:42 -05:00

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

Installs ``grub[2]`` on boot partition on the system. In case GRUB2 is
not available in the system, a fallback to Extlinux will happen. It's
also possible to enforce the use of Extlinux by exporting a
``DIB_EXTLINUX`` variable to the environment.

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``.