sysutils/grub2: revive GRUB port

[eric_metricspace.net]

Summary

This patch updates the GRUB port to a recent release, restores functionality, and adds more build options.

This is not yet ready to be committed, but it can be reviewed/tested.

Test Plan

This has been tested with EFI. It currently does not pass in the EFI map to the kernel, but it can boot with a working frame buffer. The PC version can be tested with a legacy BIOS setup. The QEMU setup can be tested by someone who knows how. The Coreboot setup cannot presently be tested easily.

[eric_metricspace.net]

I noticed there was a recent release, so I updated

[eric_metricspace.net]

sysutils/grub2/files/patch-grub-core-osdep-unix-getroot.c

8

These are probably unnecessary

sysutils/grub2/files/patch-po-POTFILES.in

8

This can be dropped, as it seems to have been fixed in the latest version.

sysutils/grub2/files/patch-util-getroot.c

8

These are probably unnecessary

sysutils/grub2/files/patch-util-grub-install.c

21

This set of changes seems to be a noop

[lwhsu]

Will you do further testing for your comments in the patches?

sysutils/grub2/Makefile

6

PORTREVISION can be reset (removed) when PORTVERSION bumped.

18

These lines can be just deleted.

[tobik]

This still has the same issues that led to removal of it in the first place. Please see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234508 for the previous attempt. Ability to build it with newer GCC versions is sort of a prerequisite to readd it to the tree. gcc7 is EOL and has been DEPRECATED now.

[eric_metricspace.net]

Switched to gcc9, tested successfully with EFI.

[eric_metricspace.net]

Added ability to pass in EFI framebuffer info, so efifb works.

[eric_metricspace.net]

Remaining work to be done: pass in EFI map, pass in GELI keys to keybuf, try compiling with clang.