kboot: Centralize ldscript addition

Make the pattern for ldscripts always be
arch/$MACHINE_ARCH/$MACHINE_ARCH.ldscript so we can add it from a
central Makefile. This also moves from ldscript.arch to

kboot: Centralize ldscript addition

Make the pattern for ldscripts always be
arch/$MACHINE_ARCH/$MACHINE_ARCH.ldscript so we can add it from a
central Makefile. This also moves from ldscript.arch to arch.ldscript to
match the loader's new convention.

Sponsored by: Netflix
Reviewed by: tsoome, kevans
Differential Revision: https://reviews.freebsd.org/D44057

(cherry picked from commit acb474c084b8e3b7bb738a286f9218f926a15823)

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kboot: Add our own lua bindings

Create a small wrapper around the new flua hash module so we can use it
here too. There's no 4th bindings, nor will they be created.

Sponsored by: Netflix
Different

kboot: Add our own lua bindings

Create a small wrapper around the new flua hash module so we can use it
here too. There's no 4th bindings, nor will they be created.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D43874

(cherry picked from commit e34fd722cafe8639214c72997f08b5f5faa9c21f)

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loader: Remove gfx_fb_stub.c, it's no longer needed

Now that we draw in the gfx bindings for all our interpreters only when
graphics support is compiled in, we can eliminate this from all the
loader

loader: Remove gfx_fb_stub.c, it's no longer needed

Now that we draw in the gfx bindings for all our interpreters only when
graphics support is compiled in, we can eliminate this from all the
loaders that don't have graphics support.

Sponsored by: Netflix
Reviewed by: kevans, jhb
Differential Revision: https://reviews.freebsd.org/D43905

(cherry picked from commit 23d9b5c9febf4b02957d01bc46ee75530b0dcb4a)

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kboot: Move termios to libkboot

Sponsored by: Netflix

(cherry picked from commit 36ef238cb604c827c696e975281f63d90641005f)

kboot: Move system calls to libkboot

Sponsored by: Netflix

(cherry picked from commit 2e3f49888ec8851bafb22011533217487764fdb0)

kboot: Cleanup libkern reference

For aarch64 and amd64, we don't pull in anything from libkern, so we
don't need it in our path. However, powerpc needs ucmpdi2 from libkern,
so bring it into libkbo

kboot: Cleanup libkern reference

For aarch64 and amd64, we don't pull in anything from libkern, so we
don't need it in our path. However, powerpc needs ucmpdi2 from libkern,
so bring it into libkboot's build and omit it from loader.kboot.

Sponsored by: Netflix

(cherry picked from commit 4aabaa1890e927ed3dd34ccc4642268ea6a505ce)

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kboot: Move _start out of kboot and into libkboot

Move the startup code from kboot/kboot to kboot/libkboot and add the
necessary infrastructure for it to build. move start_arch.h, a private
header f

kboot: Move _start out of kboot and into libkboot

Move the startup code from kboot/kboot to kboot/libkboot and add the
necessary infrastructure for it to build. move start_arch.h, a private
header for libkboot, over as well.

Sponsored by: Netflix

(cherry picked from commit a03411e84728e9b267056fd31c7d1d9d1dc1b01e)

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kboot: Move to kboot/kboot

In anticipation of separating the library elements from the kboot
prorgam elements, move kboot down a level into a subdirectory. There
will be libkboot and include directo

kboot: Move to kboot/kboot

In anticipation of separating the library elements from the kboot
prorgam elements, move kboot down a level into a subdirectory. There
will be libkboot and include directories in subsequent commits,
mirroring other subsystems like i386 and efi.

Sponsored by: Netflix

(cherry picked from commit 091c255b5b279fddf445a42dd7d0bad0e7c213fd)

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