Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Almost all copies of platform_mp_init_secondary just called
intr_pic_init_secondary. Replace them with a direct call. On BCM2836
and ARMADA XP we need to add this function, but it can be empty.

Reviewed by: ian, imp
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D5460

Remove platform_mp_probe as it's almost identical on most ARM SoCs, and
slightly wrong on the others. We should just check if mp_ncpus is set to
more than one CPU as we may wish to run on a single core even when SMP is
available.

Reviewed by: ian
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D5458

Remove platform_ipi_send, it's an unneeded as all implementations are
identical.

Sponsored by: ABT Systems Ltd

ARM: Use new ARMv6 naming conventions for cache and TLB functions
in all but ARMv4 specific files.
Expand ARMv6 compatibility stubs in cpu-v4.h. Use physical address
in L2 cache functions if ARM_L2_PIPT is defined.

ARM: Rename remaining instances of cpufunc_id() to cpu_ident(),
forgotten in r295096.
Remove tlb_flushI/tlb_flushI_SE functions forgotten in r295122.

Since r289279 bufinit() uses mp_ncpus, but some architectures set this
variable during mp_start() which is too late. Move this to mp_setmaxid()
where other architectures set it and move x86 assertions to MI code.

Reviewed by: kib (x86 part)

Include vm/pmap.h for pmap_kextract.

Use pmap_mapdev()/unmapdev() to temporarily map on-chip sram while copying
the startup trampoline code. The old code allocated a kva page, mapped it
using using pmap_kenter_nocache(), then freed the kva without destroying
the mapping. This is the only use of pmap_kenter_nocache() in the system,
so redoing this one use of allows it to be garbage collected in the
near future.

Avoid using hard-coded SoC's register address in mptramp code for Armada XP

SoC's registers base address may differ between boards
(0xf1000000 or 0xd0000000). Therefore, in order to use
the proper CPU Boot Address Redirect register during SMP
initialization in mptramp the real, physical address has
to be passed to mptramp based on the value from DT.

Reviewed by: gber

Fix broken SMP startup on Armada XP after r265694

During Armada's platform_mp_start_ap(), mptramp code
is being copied to the specific physical location (0xffff0000).
Before r265694 the address to which the code should be copied
was equal to the address of mpentry routine that followed the
mptramp in locore.S. Now the mptramp end address should be
exported and used as a copy limit.

Reviewed by: gber

Move the declaration for mpentry() into a header file instead of pasting
it into a bunch of different .c files. Remove declarations for the unused
mptramp() function from everywhere except AramadaXP (and I think it's
really not used there either, because the code that references it appears
to be insanely does-nothing in nature).

Replace kernel virtual address space allocation with vmem. This provides
transparent layering and better fragmentation.

- Normalize functions that allocate memory to use kmem_*
- Those that allocate address space are named kva_*
- Those that operate on maps are named kmap_*
- Implement recursive allocation handling for kmem_arena in vmem.

Reviewed by: alc
Tested by: pho
Sponsored by: EMC / Isilon Storage Division

Properly initialize Armada XP MP subsystem.

- correct setting of Auxiliary Control Register for MP mode
- correct setting of Auxiliarty Debug registers
- cleanup management of memory contains bootup code
- early initialization of Coherency Fabric (MP and not-MP mode)
- enable Snoop Filtering

Obtained from: Semihalf

Fix build for SMP.

Submitted by: Giovanni Trematerra <gianni at freebsd DOT org>

Merging of projects/armv6, part 7

Add Marvell ARMADA XP support

Obtained from: Marvell, Semihalf