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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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arm/arm64 freescale: Remove unused devclass arguments to DRIVER_MODULE.

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

S

Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights

These ones were unambiguous cases where the Foundation was the only
listed copyright holder (in the associated license block).

Sponsored by: The FreeBSD Foundation

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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.

Move the simple armv6 only timer drivers to require MULTIDELAY to help
move all armv6 configs it.

Add support for the imx6ul SoC.

Port the IMX6 kernel configuration to use MULTIDELAY. This will help adding
the i.MX series of SoCs to the armv6 GENERIC kernel.

This uses updated times from ian@.

Reviewed by: ian
Sponsored by: AB

Port the IMX6 kernel configuration to use MULTIDELAY. This will help adding
the i.MX series of SoCs to the armv6 GENERIC kernel.

This uses updated times from ian@.

Reviewed by: ian
Sponsored by: ABT Systems Ltd

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Use tc_priv to find the softc in the i.MX timer driver.

Sponsored by: ABT Systems Ltd

Replace the hard-coded way-too-small minimum event timer period with a value
calculated at runtime based on how long it takes to set up an event in
hardware. This fixes the intermittant 1-minute han

Replace the hard-coded way-too-small minimum event timer period with a value
calculated at runtime based on how long it takes to set up an event in
hardware. This fixes the intermittant 1-minute hang at boot on imx5
systems, and also the occasional oversleeping while running. It doesn't
affect imx6 systems, which use different hardware for eventtimers.

It turns out that it usually takes about 30 timer ticks to set up the timer
compare register, and the old hard-coded minimum period was 10 ticks. On
the rare occasions when a timeout event that short was set up, we'd miss
the event and have to wait about 64 seconds for counter rollover before
the compare interrupt would fire.

Instead of just hardcoding a new bigger value, the code now measures the
time it takes to do the register read/write sequence to set up the compare
register, scales it up by 1.5x to be safe, and calculates the minimum event
period from the result. In the real world, the minimum period works out to
about 750 nanoseconds on imx5 hardware.

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Eliminate unnecessary read/modify/write sequences during eventtimer setup.

It turns out to be surprisingly expensive to access the gpt hardware (on the
order of 150ns per read/write). To cut down o

Eliminate unnecessary read/modify/write sequences during eventtimer setup.

It turns out to be surprisingly expensive to access the gpt hardware (on the
order of 150ns per read/write). To cut down on the overhead of setting up
each eventtimer event, eliminate read-modify-write sequences to manage the
compare interrupt enable, by keeping a shadow copy of the hardware register
and only writing to the hardware when the enable bits really change.

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Remove unreferenced global function imx_gpt_get_timerfreq() and do some
cleanups enabled by that:

- The only thing left in imx_gptvar.h was the softc, which IMO never
should have been in there a

Remove unreferenced global function imx_gpt_get_timerfreq() and do some
cleanups enabled by that:

- The only thing left in imx_gptvar.h was the softc, which IMO never
should have been in there at all. Move it into the driver, and
delete the header file.

- Remove several unneeded #includes from the driver.

- Change imx_gpt_softc from global to static (it's used by DELAY()), and
don't redundantly static-initialize it to NULL.

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Merge ^/head r309817 through r310168.

[iMX6] Add compatibility string for GPT timer on i.MX6 Dual

Up until r295436 GPT timer in i.MX6 Dual dts used the same compatiblity
string as i.MX6 Quad. After the sync up with Linux in r295436, GPT

[iMX6] Add compatibility string for GPT timer on i.MX6 Dual

Up until r295436 GPT timer in i.MX6 Dual dts used the same compatiblity
string as i.MX6 Quad. After the sync up with Linux in r295436, GPT timer
stopped getting attached on the i.MX6 Dual

MFC after: 3 days

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Merge ^/head r308491 through r308841.

Stop including fdt_common.h from the arm code when it's unneeded.

Sponsored by: ABT Systems Ltd

Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

Stop using machine/fdt.h in the arm kernel code when we don't need it.