sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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sys: Remove $FreeBSD$: one-line .c pattern

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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powerpc mpc85xx: Remove unused devclass arguments to DRIVER_MODULE.

powerpc: clean up empty lines in .c and .h files

Add support for building Book-E kernels with clang/lld.

This involved several changes:

* Since lld does not like text relocations, replace SMP boot page text relocs
in booke/locore.S with position-

Add support for building Book-E kernels with clang/lld.

This involved several changes:

* Since lld does not like text relocations, replace SMP boot page text relocs
in booke/locore.S with position-independent math, and track the virtual base
in the SMP boot page header.

* As some SPRs are interpreted differently on clang due to the way it handles
platform-specific SPRs, switch m*dear and m*esr mnemonics out for regular
m*spr. Add both forms of SPR_DEAR to spr.h so the correct encoding is selected.

* Change some hardcoded 32 bit things in the boot page to be pointer-sized, and
fix alignment.

* Fix 64-bit build of booke/pmap.c when enabling pmap debugging.

Additionally, I took the opportunity to document how the SMP boot page works.

Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D21999

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MFHead @348740

Sponsored by: The FreeBSD Foundation

powerpc/mpc85xx: Use the proper (EREF) form of writing to DBCR0

DBCR0, according to the Freescale EREF, is guaranteed to be updated, and
changes take effect, after an isync plus change of MSR[DE] fr

powerpc/mpc85xx: Use the proper (EREF) form of writing to DBCR0

DBCR0, according to the Freescale EREF, is guaranteed to be updated, and
changes take effect, after an isync plus change of MSR[DE] from 0 to 1.
Otherwise it's guaranteed to be updated "eventually". Use the expected
synchronization sequence to write it for resetting.

This prevents "Reset failed" from being printed immediately before the CPU
resets.

MFC after: 2 weeks

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MFHead@r345275

MFhead@r344786

Merge ^/head r344549 through r344775.

powerpc/mpc85xx: Synchronize timebase the platform correct way

Summary:
To safely synchronize timebase we need to disable the timebase on all
cores, set timebase, and resynchronize. This adds two n

powerpc/mpc85xx: Synchronize timebase the platform correct way

Summary:
To safely synchronize timebase we need to disable the timebase on all
cores, set timebase, and resynchronize. This adds two new devices, mutually
exclusive, which attach on the SoC simplebus, to freeze and unfreeze the
timebase. The devices are singletons, and platform-specific, so no reason
to make them optional and in separate files.

This was found to be necessary for top(1) to work correctly on an AmigaOne
X5000 (P5020 SoC). It also fixes bufdaemon and bufspacedaemon hangs at
shutdown.

Test Plan: Regression test on various Book-E hardware.

Reviewed by: nwhitehorn
Tested by: Brandon Bergren (git_bdragon.rtk0.net)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19208

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Merge ^/head r341764 through r341812.

powerpc/booke: Replace a logical equivalent of pmap_kextract() with a real call

No sense in reinventing the wheel here. AP bringup is not a time-critical
point.

Merge ^/head r340918 through r341763.

powerpc: Prepare Book-E kernels for KERNBASE != run base

Book-E kernels really run at VM_MIN_KERNEL_ADDRESS, which currently happens to
be the same as KERNBASE. KERNBASE is the linked address, whic

powerpc: Prepare Book-E kernels for KERNBASE != run base

Book-E kernels really run at VM_MIN_KERNEL_ADDRESS, which currently happens to
be the same as KERNBASE. KERNBASE is the linked address, which the loader also
takes to be the physical load address. Treat KERNBASE as a physical address,
not a virtual, and change virtual address references for KERNBASE to use
something more appropriate.

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Remove dead errata fixup code

This code caused more problems than it should have fixed (boot failures) on
the machines I tested, so has been commented out for a while now. Remove
it, and assume the

Remove dead errata fixup code

This code caused more problems than it should have fixed (boot failures) on
the machines I tested, so has been commented out for a while now. Remove
it, and assume the errata fixups were done by the bootloader where they
belong.

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Remove platform_cpu_idle() and platform_cpu_idle_wakeup() interfaces

These interfaces were put in place to let QorIQ SoCs dictate CPU idling
semantics, in order to support capabilities such as NAP m

Remove platform_cpu_idle() and platform_cpu_idle_wakeup() interfaces

These interfaces were put in place to let QorIQ SoCs dictate CPU idling
semantics, in order to support capabilities such as NAP mode and deep sleep.
However, this never stabilized, and the idling support reverted back to
CPU-level rather than SoC level. Move this code back to cpu.c instead. If
at a later date the lower power modes do come to fruition, it should be done
by overriding the cpu_idle_hook instead of this platform hook.

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sys/powerpc: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - e

sys/powerpc: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

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Whether you can use mttb() or not is more complicated than whether PSL_HV
is set and the right thing to do may be platform-dependent (it requires
firmware on PowerNV, for instance). Make it a new pla

Whether you can use mttb() or not is more complicated than whether PSL_HV
is set and the right thing to do may be platform-dependent (it requires
firmware on PowerNV, for instance). Make it a new platform method called
platform_smp_timebase_sync().

MFC after: 3 weeks

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Merge ^/head r308491 through r308841.

Simplify the page tracking for VA<->PA translations.

Drop the tracking down to the pmap layer, with optimizations to only track
necessary pages. This should give a (slight) performance improvement,

Simplify the page tracking for VA<->PA translations.

Drop the tracking down to the pmap layer, with optimizations to only track
necessary pages. This should give a (slight) performance improvement, as well
as a stability improvement, as the tracking is already mostly handled by the
pmap layer.

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Merge ^/head r306412 through r306905.

Fix e500mc/derivatives cpu idle

Setting the doze registers wasn't actually working, and was being masked by a
bad #ifdef. Since the #ifdef was fixed, now e500mc-based SoCs hang at idle.
Fix this by

Fix e500mc/derivatives cpu idle

Setting the doze registers wasn't actually working, and was being masked by a
bad #ifdef. Since the #ifdef was fixed, now e500mc-based SoCs hang at idle.
Fix this by using the intended wait.

MFC after: 1 week

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Merge ^/head r305431 through r305622.