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.
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 vga=normal
.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
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