libsa: Remove redundant sys/cdefs.h

Sponsored by: Netflix

Remove $FreeBSD$: one-line .c pattern

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

stand: fix mismerge

Remove stray line from mismerge of 5d1531d9d4e7. This is no longer
needed.

Fixes: 5d1531d9d4e7
Sponsored by: Netflix

stand: collapse all copies of *copyenv into md_copyenv

Use the efi's bi_copyenv to md_copyenv and place it in modinfo.c. Remove
all other nearly identical and efi's has the best error handling.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D36574

stand: Move md_copymodules into modinfo.c and reduce copies

md_copymodules, bi_copymdoules, bi_copymodules32 (x2) and
bi_copymodules64 (x2) are all the same routine... Replace them all with
md_copymodules. This saves about 800 bytes on i386 BIOS loader, which is
a nice bonus.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D36572

stand: Create common/modinfo.h

Move all the MOD_xxx macros to this header. Each user of this interface
is currently required to define MOD_ALIGNMENT(l). modinfo was selected
because it sits inbetween modules and metadata and will make it easier
to migrate to new, shared intefaces.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D36571

stand: Create MOD_ALIGN macro and use it everywhere

To further reduce the differences between the different MOD_xxx macros,
use MOD_ALIGN to do the proper alignment for the given use.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D36570

stand: remove mips support

As part of decommissioning mips support, remove the boot loader
support. Do this in advance of other boot loader work to limit the
amount of work that will be thrown away.

Sponsored by: Netflix
Reviewed by: jrtc27
Differential Revision: https://reviews.freebsd.org/D33377

Remove sparc64 support from the boot loader.

Remove all the sparc64 specific bits, both files and ifdefs.

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

Transition to boot_env_to_howto and boot_howto_to_env in the boot
loader.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16205

Eliminate boot loader copies of boot arg parsing.

Eliminate 4 of the copies of the arg parsing in /boot/laoder
by using boot_parse_cmdline.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16205

stand: Fix build after r334882

Not sure how this was not caught in Universe.

stand: Consolidate checking for boot flags driven by environment vars

e.g. boot_mute, boot_single, boot_verbose, and friends; we checked for these
in multiple places, consolidate into common/ and allow a setting of "NO" for
any of these to turn them off. This allows systems with multiple
loader.conf(5) or loader.conf(5) overlay systems to easily turn off
variables in later processed files by setting it to NO.

Reported by: Nick Wolff @ iXsystems
Reviewed by: imp

- Unbreak booting sparc64 kernels after the metadata unification in
r329190; sparc64 kernels are always 64-bit but with that revision
in place, the loader was treating them as 32-bit ones.
- In order to reduce the likelihood of this kind of breakage in the
future, #ifdef out md_load() on sparc64 and make md_load_dual() -
which is currently local to metadata.c anyway - static.
- Make md_getboothowto() - also local to metadata.c - static.
- Get rid of the unused DTB pointer on sparc64.

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

Fix module loading on arm after the metadata.c unification in r329190.
Arm modules need an additional address fixup not needed by other platforms.

stand: Fix ubldr after r329190

metadata load files were consolidated in r329190, and these relocation fixup
bits were inadvertently dropped in the process. Re-add them to fix boot with
ubldr.

Glanced over by: jhibbits
X-MFC-With: r329190

Unify metadata load files for arm, mips, powerpc, sparc64

Summary:
All metadata.c files are very similar, with only trivial changes. Unify them
into a single common file, with minor special-casing where needed.

Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D13978