stand: efi create eficom console device.

Fix the 'renaming kludge' that we absolutely cannot do going forward
(it's cost us days of engineering time).

console=comconsole talks to the hardware direc

stand: efi create eficom console device.

Fix the 'renaming kludge' that we absolutely cannot do going forward
(it's cost us days of engineering time).

console=comconsole talks to the hardware directly. This is available
only on amd64. It is not available anywhere else (and so requires
changes for people doing comconsole on aarch64)

console=eficom talks to the console via EFI protocols. It's available
on amd64, aarch64 and riscv64. It's the first port that we find, though
it can be overriden by efi_com_port (which should be set to the UID of
the serial port, not the I/O port, despite the name). devinfo -v
will give the UID to uartX mapping.

This is an incompatible change for HYPER-V on amd64. It only works with
eficom console, so you'll need to change your configuration in
loader.conf. No compatibility hack will ever be provided for this (since
it requires renamig, which the loader cannot reliably do).

It's also an incompatible change for aarch64. comconsole will need to
change to eficom. There might be a comconsole "shim" for this.

All the interlock to keep only eficom and comconsole from both attaching
have been removed.

RelNotes: Yes
Sponsored by: Netflix
Discussed with: kevans
Differential Revision: https://reviews.freebsd.org/D39982

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loader: install help files only once

Every file should be installed exactly once by `make installworld`.
This is especially important for pkgbase.

Loader help files were being installed by each loa

loader: install help files only once

Every file should be installed exactly once by `make installworld`.
This is especially important for pkgbase.

Loader help files were being installed by each loader variant (e.g.,
the simp, lua, and 4th EFI loaders). Add a (slightly hacky) mechanism
to skip installing help files for all but one variant.

PR: 271178
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D40021

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stand/efi: Simplify code here

We have plenty of stack in the EFI case, so use it instead of the
complicated malloc / free dance.

Sponsored by: Netflix
Reviewed by: tsoome, kevans
Differential Rev

stand/efi: Simplify code here

We have plenty of stack in the EFI case, so use it instead of the
complicated malloc / free dance.

Sponsored by: Netflix
Reviewed by: tsoome, kevans
Differential Revision: https://reviews.freebsd.org/D39415

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stand/boot1.efi: Implement bootonce for ZFS

Implement ZFS bootonce protocol. We pass zfs-bootonce=t to the next boot
stage as a command line argument. Unlike zfsboot -> loader handoff in
the BIOS ca

stand/boot1.efi: Implement bootonce for ZFS

Implement ZFS bootonce protocol. We pass zfs-bootonce=t to the next boot
stage as a command line argument. Unlike zfsboot -> loader handoff in
the BIOS case, we don't use the OS_BOOTONCE_USED. This would require
modifications to loader.efi which would only server to make it more
complicated. Instead, use the command line parsing interface for the
boot1.efi -> loader.efi to pass in the zfs-bootonce kenv that will be
needed by rc.d/zfsbe to activate the BE if boot progresses that far.

Sponsored by: Netflix
Reviewed by: tsoome, kevans
Differential Revision: https://reviews.freebsd.org/D39412

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stand/boot1.efi: Allow modules to add env variables

Sometimes filesystem modules need to pass details of the state of the
filesystem to later stages of a boot. Provide a generic method to do
so. We'

stand/boot1.efi: Allow modules to add env variables

Sometimes filesystem modules need to pass details of the state of the
filesystem to later stages of a boot. Provide a generic method to do
so. We'll add them after any env variables set in our config files.

Sponsored by: Netflix
Reviewed by: tsoome, kevans
Differential Revision: https://reviews.freebsd.org/D39407

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Note that static hints no longer break loader hints

This commentary was carried over from the x86 version of the same code,
but has actually been inaccurate for a while now. As of FreeBSD 12.x,
all

Note that static hints no longer break loader hints

This commentary was carried over from the x86 version of the same code,
but has actually been inaccurate for a while now. As of FreeBSD 12.x,
all environments are used unless they disable each other. See
39d44f7f15c ("kern_environment: use any provided environments [...]")
for details.

Reviewed by: imp
Differentiala Revision: https://reviews.freebsd.org/D35695

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Update/fix Makefile.depend for userland

loader.efi: Fix some arm64 PE metadata

- Mark the file as an executable in the COFF header.
- Provide separate .text and .data sections.
- Provide sane file and section alignment values. These valu

loader.efi: Fix some arm64 PE metadata

- Mark the file as an executable in the COFF header.
- Provide separate .text and .data sections.
- Provide sane file and section alignment values. These values are the
defaults defined in the PE specification.
- Set appropriate characteristics for each of .text and .data.

This is required for the MS devkit to load our UEFI image.

Obtained from: OpenBSD via allanjude
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D37765

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gptboot.efi.8: Fix a typo