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ref #7524

- move extlinux_raidopt to setup_syslinux and pass bootdev instead
- pass kernel_opts to grub config too
- make sure to quote the args to setup_grub/syslinux

Roberto Oliveira authored Jun 07, 2017 and Natanael Copa committed Jun 08, 2017

This patch allows to install Alpine in the disk on ppc64le.
It installs grub and also configure the 'PowerPC PReP boot'
partition correctly.

For now the installation is enabled by selecting 'sys' option (same
option used for syslinux) in the setup options.

udhcpc will print info to stderr and it confuses the password prompt

fixes #7260

Some users may know exactly which variant they want, and instead of
asking them two questions, we accept if users types in the variant at
the first question.

if the variant does not exist, then user is prompted.

- use "alpine" as hostname
- use first repo in the mirror list (normally cdn)
- don't ask about proxy

first in the list is normally a cdn

also try figure out a good video driver from lspci outout

needed for zfs

pv-grub does not support 64bit in ext4. We will likely never need a 16T
boot partition so let us just disable 64bit for /boot.

ref #6962

udhcpc will print to stdout the ip addr it got. This gets in the way for
the root password prompt so we redirect udhcpc to /dev/null

the wget -s option was removed in busybox 1.26
https://git.busybox.net/busybox/commit/?id=2972e2c4acb9c46a8cc05c857acac2b3d439bf69

ref #6683

fixes #2876

fixes #6517

The output format of util-linux losetup is different, and there's
no easy way to get uniform output from these two implementations.

The fakeroot fake-env feature requires that the filesystem if unmodified between the
reloads of the fake-env. We dont comply with this so we re-exec the
entire script in fakeroot instead.

mksquashfs will ignore errors and continue by default by design. This is
definitively not the behavior we want so we tell it to explicitly exit
on error.

it is likely needed if it is set.

ref #6219

This is a way to inject the users pubkey to initramfs

To create boot media, otherwise it is assumed to be updating
live system and /boot is mounted.