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

Remove /^\s*\*+\s*\$FreeBSD\$.*$\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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arm: clean up empty lines in .c and .h files

sys/arm: 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

sys/arm: 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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MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320573 through r320970.

Add external PLATFORM access on arm, and use it in the pl310 driver.

This allows multiple instances of SoCs that use the pl310 driver to be
built within the same kernel:

* Add access to the platfo

Add external PLATFORM access on arm, and use it in the pl310 driver.

This allows multiple instances of SoCs that use the pl310 driver to be
built within the same kernel:

* Add access to the platform_t object from outside platform.c
* Use this with the pl310 driver

There is a new platform_pl310 interface to replace the existing code. SoCs
need to implement the init method, and if they have special requirements to
write to the two registers we care about will also need to implement the
write_ctrl and write_debug methods.

Differential Revision: https://reviews.freebsd.org/D11546

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Merge ^/head r320042 through r320397.

Disable PL310 outer cache sync for IO coherent platforms

When a PL310 cache is used on a system that provides hardware
coherency, the outer cache sync operation is useless, and can be
skipped. Moreo

Disable PL310 outer cache sync for IO coherent platforms

When a PL310 cache is used on a system that provides hardware
coherency, the outer cache sync operation is useless, and can be
skipped. Moreover, on some systems, it is harmful as it causes
deadlocks between the Marvell coherency mechanism, the Marvell PCIe
or Crypto controllers and the Cortex-A9.

To avoid this, this commit introduces a new Device Tree property
'arm,io-coherent' for the L2 cache controller node, valid only for the
PL310 cache. It identifies the usage of the PL310 cache in an I/O
coherent configuration. Internally, it makes the driver disable the
outer cache sync operation.

Note, that other outer-cache operations are not removed, as they may
be needed for certain situations, such as booting secondary CPUs.
Moreover, in order to enable IO coherent operation, the decision
whether to use L2 cache maintenance callbacks is done in busdma
layer, which was enabled in one of the previous commits.

Submitted by: Michal Mazur <mkm@semihalf.com>
Marcin Wojtas <mw@semihalf.com>
Reviewed by: mmel
Obtained from: Semihalf
Differential revision: https://reviews.freebsd.org/D11245

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Merge ^/head r316992 through r317215.

Fix bit assignment in PL310_POWER_CTRL

Align to ARM specification:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0246f/BEIEHICF.html

Submitted by: Marcin Wojtas <mw@semihalf.com>
O

Fix bit assignment in PL310_POWER_CTRL

Align to ARM specification:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0246f/BEIEHICF.html

Submitted by: Marcin Wojtas <mw@semihalf.com>
Obtained from: Semihalf
Sponsored by: Stormshield
Reviewed by: meloun-miracle-cz
Differential revision: https://reviews.freebsd.org/D10223

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MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

Catch up with head (r291075).

Make pl310_print_config static, it's not called out of pl310.c

Sponsored by: ABT Systems Ltd

ARM: Remove trailing whitespace from sys/arm/include
No functional changes.

Approved by: kib (mentor)

Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from HEAD

Correct PL310_POWER_CTRL offset

Offet for the power control register was specified incorrectly (it had
the same value as the prefetch control register.) This change corrects
the offset value to 0xF8

Correct PL310_POWER_CTRL offset

Offet for the power control register was specified incorrectly (it had
the same value as the prefetch control register.) This change corrects
the offset value to 0xF80, per the ARM PL310 documentation.

Submitted by: Steve Kiernan <stevek@juniper.net>
Obtained from: Juniper Networks, Inc.

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Merge from head@274682

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)

Sync to HEAD@r269943.

Set the pl310 L2 cache driver to attach during the middle of BUS_PASS_CPU.
Because that's earlier than interrupts are available, set up deferred
configuration of interrupts (which are used only for d

Set the pl310 L2 cache driver to attach during the middle of BUS_PASS_CPU.
Because that's earlier than interrupts are available, set up deferred
configuration of interrupts (which are used only for debugging).

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MFC @ r266724

An SVM update will follow this.