libsa: Remove redundant sys/cdefs.h

Sponsored by: Netflix

loader: Retire CTASSERT

The project is moving away from CTASSERT in favor of
_Static_assert. Cleanup the few instances in the loader proactively.

Sponsored by: Netflix
Reviewed by: manu, tsoome
Differential Revision: https://reviews.freebsd.org/D44006

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

stand: create common set_currdev

Pull together the nearly identical copies of set_currdev in i386,
userboot and efi. Other boot loaders have variances that might be fine
to use the common routine, or not. Since they are harder to test for me,
and ofw and uboot do handle these setting differently, leave them be for
now.

Sponsored by: Netflix
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D38005

stand: Create common gen_setcurrdev and replace code

Replace 4 identical copies of *_setcurrdev with gen_setcurrdev to avoid
having to create a 5th copy. uboot_setcurrdev is actually different and
needs to remain separate (even though it's quite similar).

Sponsored by: Netflix
Reviewed by: fuz@fuz.su, kevans
Differential Revision: https://reviews.freebsd.org/D38003

stand/zfs: Add a third argument to zfs_probe_dev: part_too

Pass in 'true' if you'd like to search this device's partitions or
'false' if you should just search the device. EFI and (in the future)
kboot have discrete partitions that aren't accessed via the full disk
device. Weird things happen if you try to search in these cases.

Sponsored by: Netflix

stand: create devinit

devinit() marches through all the devices, calling the inint routines if
any exist. Replace all the identical copies of this code.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D37349

stand: Remove i386-only support fire firewire

Remove support for booting off of firewire, and for having dcons via
firewire in the loader. Kernel support for these things is unchanged.
Discussed on arch@ and the current state is not working (and the build
was wrong to boot).

Sponsored by: Netflix
Discussed: https://lists.freebsd.org/archives/freebsd-arch/2022-November/000267.html
Reviewed by: kevans, melifaro, emaste
Differential Revision: https://reviews.freebsd.org/D37334

stand: i386_fmtdev can be reduced to devformat

devformat produces the same output as i386_fmtdev, so just use it to
reduce on the dependencies.

Sponsored by: Netflix
Reviewed by: tsoome
Differential Revision: https://reviews.freebsd.org/D35927

stand: Replace zfs_fmtdev with generic devformat()

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D35973

stand: Change zfs_fmtdev to take a struct devdesc *

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D35974

stand: Move i386_devdesc to a union

Rather than have the magic, hand-crafted fields that have to align with
fields in other structures at the end of i386_devdesc, make it into
anonymous union and adjust the code accordingly. This is safer and
similar to what CAM does.

Sponsored by: Netflix
Reviewed by: kevans, tsoome (prior version)
Differential Revision: https://reviews.freebsd.org/D35965

loader: implement mount/unmount rootfs

We want to keep our root file system open to preserve bcache segment
between file accesses, thus reducing physical disk IO.

Reviewed by: imp, allanjude, kevans (previous version)
Differential Revision: https://reviews.freebsd.org/D30848
MFC after: 1 month

i386/loader: Call tslog_init

This allows the i386 loader to start recording timestamps.

Reviewed by: kevans

loader: implement framebuffer console

Draw console on efi.
Add vbe framebuffer for BIOS loader (vbe off, vbe on, vbe list,
vbe set xxx).
autoload font (/boot/fonts) based on resolution and font size.
Add command loadfont (set font by file) and
variable screen.font (set font by size). Pass loaded font to kernel.

Export variables:
screen.height
screen.width
screen.depth

Add gfx primitives to draw the screen and put png image on the screen.
Rework menu draw to iterate list of consoles to enamble device specific
output.

Probably something else I forgot...

Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27420

loader: fix non-zfs build

We can not include zfs headers while building without zfs.

Reported by: Oscar Holmlund

loader: zfs should support bootonce an nextboot

bootonce feature is temporary, one time boot, activated by
"bectl activate -t BE", "bectl activate -T BE" will reset the bootonce flag.

By default, the bootonce setting is reset on attempt to boot and the next
boot will use previously active BE.

By setting zfs_bootonce_activate="YES" in rc.conf, the bootonce BE will
be set permanently active.

bootonce dataset name is recorded in boot pool labels, bootenv area.

in case of nextboot, the nextboot_enable boolean variable is recorded in
freebsd:nvstore nvlist, also stored in boot pool label bootenv area.
On boot, the loader will process /boot/nextboot.conf if nextboot_enable
is "YES", and will set nextboot_enable to "NO", preventing /boot/nextboot.conf
processing on next boot.

bootonce and nextboot features are usable in both UEFI and BIOS boot.

To use bootonce/nextboot features, the boot loader needs to be updated on disk;
if loader.efi is stored on ESP, then ESP needs to be updated and
for BIOS boot, stage2 (zfsboot or gptzfsboot) needs to be updated
(gpart or other tools).

At this time, only lua loader is updated.

Sponsored by: Netflix, Klara Inc.
Differential Revision: https://reviews.freebsd.org/D25512

zfs: add an option to the bootloader to rewind the ZFS checkpoint

The checkpoints are another way of keeping the state of ZFS.
During the rewind, the pool has to be exported.
This makes checkpoints unusable when using ZFS as root.
Add the option to rewind the ZFS checkpoint at the boot time.
If checkpoint exists, a new option for rewinding a checkpoint will appear in
the bootloader menu.
We fully support boot environments.
If the rewind option is selected, the boot loader will show a list of
boot environments that existed before the checkpoint.

Reviewed by: tsoome, allanjude, kevans (ok with high-level overview)
Differential Revision: https://reviews.freebsd.org/D24920

loader: cstyle cleanup

No functional changes intended.

Sponsored by: Netflix, Klara Inc.

Move smbios.c to libsa.

smbios used to be an i386 only kinda weird quirk to the x86
architecture. But UEFI picked it up, dusted it off and now it's many
other locations. Make it base technology by moving it to libsa and
fixing up the compliation. The code has issues with unaligned access
still, but that will be addressed in a followup commit.

Differential Revision: https://reviews.freebsd.org/D23660

Create ptov() function.

Create a ptov() function. It's basically the same as the btx PTOV
macro, but works everywhere. smbios needs this to translate addresses,
but the translation differs between BIOS booting and EFI booting. Make
it a function so one smbios.o can be used everywhere. Provide
definitions for it in the two loaders affected.

Differential Revision: https://reviews.freebsd.org/D23660

Add support for hypervisor check on x86

Add ficl words for isvirtualized
and move ficl inb and outb words to ficl/x86/sysdep.c
so can be shared by i386 and amd64

Reviewed by: imp bdrewery
MFC after: 1 week
Sponsored by: Juniper Networks
Differential Revision: https://reviews.freebsd.org/D22069

loader: vidconsole should set LINES and COLUMNS

Set LINES and COLUMNS based on terminal dimensions.

Don't reference zfs-specific variables if LOADER_ZFS_SUPPORT is undefined
because the variables will be undefined too.

Reported by: sjg@
Pointy hat: ian@

Fix args cross-threading between gptboot(8) and loader(8) with zfs support.

When loader(8) is built with zfs support enabled, it assumes that any extarg
data present is a zfs_boot_args struct, but if the first-stage loader was
gptboot(8) the extarg data is actually a geli_boot_args struct. Luckily,
zfsboot(8) and gptzfsboot(8) have always passed KARGS_FLAGS_ZFS along with
KARGS_FLAGS_EXTARG, so we can use KARGS_FLAGS_ZFS to decide whether the
extarg data is a zfs_boot_args struct.

To avoid similar problems in the future, gptboot(8) now passes a new
KARGS_FLAGS_GELI to indicate that extarg data is geli_boot_args. In
loader(8), if the neither KARGS_FLAGS_ZFS nor KARGS_FLAGS_GELI is set but
extarg data is present (which will be the case for gptboot compiled before
this change), we now check for the known size of the geli_boot_args struct
passed by the older versions of gptboot as a way of confirming what type of
extarg data is present.

In a semi-related tidying up, since loader's main() has already decided
what type of extarg data is present and set the global 'zargs' var
accordingly, don't repeat the check in extract_currdev, just check whether
zargs is NULL or not.

X-MFC after: a few days, along with prior related changes.

Eliminate duplicated code and struct member definitions in the handoff
of args data between gptboot/zfsboot and loader(8).

Despite what seems like a lot of changes here, there are no actual
changes in behavior, or in the data layout in the structures involved.
This is just eliminating identical code pasted into multiple locations.

In detail, the changes are...

- Move struct zfs_boot_args definition from libsa/zfs/libzfs.h to
i386/common/bootargs.h because it is specific to x86 booting and the
handoff between zfsboot and loader, and has no relation to the zfs
library code in general.

- The geli_boot_args and zfs_boot_args structs both contain an identical
set of member variables containing geli information. Extract this out
to a new geli_boot_data struct, and embed it in the arg-passing structs.

- Provide new routines geli_import_boot_data() and geli_export_boot_data()
that can be shared between gptboot, zfsboot, and loader instead of
pasting identical code into several different .c files.

- Remove some checks for a NULL pointer that can never be true because the
pointer being tested was set using pointer math (kargs + 1) and that can
never result in NULL in this code.

loader: create separate lists for fd, cd and hd, merge bioscd with biosdisk

Create unified block IO implementation in BIOS version, like it is done in UEFI
side. Implement fd, disk and cd device lists, this will split floppy devices
from disks and will allow us to have consistent, predictable device naming
(modulo BIOS issues).

Differential Revision: https://reviews.freebsd.org/D17888

loader: do not probe floppy devices for zfs

The subject is telling it all.

Extend loader(8) geli support to all architectures and all disk-like devices.

This moves the bulk of the geli support from lib386/biosdisk.c into a new
geli/gelidev.c which implements a devsw-type device whose dv_strategy()
function handles geli decryption. Support for all arches comes from moving
the taste-and-attach code to the devopen() function in libsa.

After opening any DEVT_DISK device, devopen() calls the new function
geli_probe_and_attach(), which will "attach" the geli code to the open_file
struct by creating a geli_devdesc instance to replace the disk_devdesc
instance in the open_file. That routes all IO for the device through the
geli code.

A new public geli_add_key() function is added, to allow arch/vendor-specific
code to add keys obtained from custom hardware or other sources.

With these changes, geli support will be compiled into all variations of
loader(8) on all arches because the default is WITH_LOADER_GELI.

Relnotes: yes
Sponsored by: Microchip Technology Inc
Differential Revision: https://reviews.freebsd.org/D15743

Stop using ../zfs/libzfs.h but instead use libzfs.h.

While ../zfs/libzfs.h mostly works, there are a few situations where
it does not. Eliminate the problem by using plain libzfs.h, like we do
for ufs support. This fixes the weird cases, and is easier to
understand. It also follows the general style convetion of avoiding
../ in #includes.

bootprog_info is generated in vers.c. Move it's definition to
bootstrap.h and remove all the redundant copies.

Sponsored by: Netflix

Prefer uintXX_t to u_intXX_t

A foolish consistency is the hobgoblin of little minds, adored by
little statesmen and philosophers and divines. With consistency a
great soul has simply nothing to do. -- Ralph Waldo Emerson

Remove d_type from devdesc. It's not needed as we can fetch it from
d_dev->dv_type when we need it.

Use the actual struct devdesc at the start of all *_devdesc structs

The current system is fragile and requires very careful layout of all
*_devdesc structures. It also makes it hard to change the base
devdesc. Take a page from CAM and put the 'header' in all the derived
classes and adjust the code to match.

For OFW, move the iHandle h_handle out of a slot conflicting with
d_opendata. Due to quirks in the alignment rules, this worked.
However changing the code to use d_opendata storage now that it's a
pointer is hard, so just have a separate field for it.

All other cleanups were to make the *_devdesc structures match where
they'd taken some liberties that were none-the-less compatible enough
to work.

Consolidate three copies of ZFS commands into a central location.

There's no reason to have multiple copies of lszfs and
reloadbe. Consolidate them into one location. Also ldi_get_size is the
same everywhere (except sparc64). Make it the same everywhere as the
common definition is more general and will work on spar64.

Interact is always called with NULL. Simplify code a little by
removing this argument, and expanding when rc is NULL. This
effectively completes the back out of custom scripts for tftp booted
loaders from r269153 that was started in r292344 with the new path
tricks that obsoleted it.

Submitted by: Netflix

Revert r326792, r326784, r326772, r326712

Something subtle is creating problems for disk access on ubldr. Back
it out unti that can be sorted out.

Sponsored by: Netflix

Fix regression with lua import

Don't print when we can't find a file. Copy it instead to the error
buffer. Higher level routines determine if it's appropriate to print
the error message.

Also, remove dead code (labeled bogusly lost functionality) since we
never used that functionality. Remove unused arg from interact() too.

Sponsored by: Netflix

Move sys/boot to stand. Fix all references to new location

Sponsored by: Netflix