Merge ^/head r344178 through r344512.

Move scterm_teken.c from 6 MD files lists to the MI files list so that it
is easier to configure. It is MI, unlike some of the other syscons files
already in the MI list.

Move scvtb.c similarly. I

Move scterm_teken.c from 6 MD files lists to the MI files list so that it
is easier to configure. It is MI, unlike some of the other syscons files
already in the MI list.

Move scvtb.c similarly. It is needed whenever sc is configured, and is
more MI than most of the files already in the MI list.

This only changes the combined list for arm64 and mips. These arches
already cannot build sc or even NOTES.

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Merge ^/head r343571 through r343711.

powerpc/powernv: Add a driver for the POWER9 XIVE interrupt controller

The XIVE (External Interrupt Virtualization Engine) is a new interrupt
controller present in IBM's POWER9 processor. It's a ve

powerpc/powernv: Add a driver for the POWER9 XIVE interrupt controller

The XIVE (External Interrupt Virtualization Engine) is a new interrupt
controller present in IBM's POWER9 processor. It's a very powerful,
very complex device using queues and shared memory to improve interrupt
dispatch performance in a virtualized environment.

This yields a ~10% performance improvment over the XICS emulation mode,
measured in both buildworld, and 'dd' from nvme to /dev/null.

Currently, this only supports native access.

MFC after: 1 month

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powerpcspe: Don't require FPU_EMU for powerpcspe IEEE emulation

Build only the necessary fpu_emu files for supporting the SPE IEEE-754
emulation exception handler.

MFC after: 1 week

MFH r338661 through r339200.

Sponsored by: The FreeBSD Foundation

Merge ^/head r338731 through r338987.

amd64: implement memcmp in assembly

Both the in-kernel C variant and libc asm variant have very poor performance.
The former compiles to a single byte comparison loop, which breaks down even
for sma

amd64: implement memcmp in assembly

Both the in-kernel C variant and libc asm variant have very poor performance.
The former compiles to a single byte comparison loop, which breaks down even
for small sizes. The latter uses rep cmpsq/b which turn out to have very poor
throughput and are slower than a hand-coded 32-byte comparison loop.

Depending on size this is about 3-4 times faster than the current routines.

Reviewed by: kib
Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D17328

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Merge ^/head r337646 through r338014.

random: Add PowerPC 'darn' instruction entropy source

Summary:
PowerISA 3.0 adds a 'darn' instruction to "deliver a random number". This
driver was modeled after (rather, copied and gutted of) the

random: Add PowerPC 'darn' instruction entropy source

Summary:
PowerISA 3.0 adds a 'darn' instruction to "deliver a random number". This
driver was modeled after (rather, copied and gutted of) the Ivy Bridge
rdrand driver.

This uses the "Conditional Random Number" behavior to remove input bias.

From the ISA reference the 'darn' instruction, and the random number
generator backing it, conforms to the NIST SP800-90B and SP800-90C
standards, compliant to the extent possible at the time the hardware was
designed, and guarantees a minimum 0.5 bits of entropy per bit returned.

Reviewed By: markm, secteam (delphij)
Approved by: secteam (delphij)
Differential Revision: https://reviews.freebsd.org/D16552

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MFH @ r337607, in preparation for boarding

Support building IPMI as a module on powerpc64

This still only supports IPMI via OPAL on powerpc64, but now it can be tested
with a GENERIC kernel.

ofw: Load initrd file

This is an OFW initrd module that would load the initrd from device tree
parameters and give the to the md driver.

With this patch, it is possible to pass a rootfs image throu

ofw: Load initrd file

This is an OFW initrd module that would load the initrd from device tree
parameters and give the to the md driver.

With this patch, it is possible to pass a rootfs image through kexec in PowerNV
mode (powerpc64). In order to user it, you should set the MD_ROOT_MEM option in
your kernel configuration.

Reviewed by: jhibbits
Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D15705

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Add the rest of the files for r335481

Missed hooking PMCR cpufreq(4) to the build, and adding the SPR to the header.

Split the PowerISA 3.0 HPT implementation from historic

PowerISA 3.0 makes several changes to not only the format of the HPT but
also the behavior surrounding it. For instance, TLBIE no longer requ

Split the PowerISA 3.0 HPT implementation from historic

PowerISA 3.0 makes several changes to not only the format of the HPT but
also the behavior surrounding it. For instance, TLBIE no longer requires
serialization. Removing this lock cuts buildworld time in half on a
18-core/72-thread POWER9 system, demonstrating that this lock is highly
contended on such a system.

There was odd behavior observed trying to make this change in a
backwards-compatible manner in moea64_native.c, so the best option was to
fully split it, and largely revert the original changes adding POWER9
support to the original file.

Suggested by: nwhitehorn

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Add an IPMI attachment for PowerNV systems

IPMI access on PowerNV systems is done through the OPAL firmware. This adds a
simple attachment for communicating with the FSP/BMC on these machines. Thi

Add an IPMI attachment for PowerNV systems

IPMI access on PowerNV systems is done through the OPAL firmware. This adds a
simple attachment for communicating with the FSP/BMC on these machines. This
has been tested on a Talos POWER9 workstation, only in the bootup phase, noting
the successful attachment messages:

...
ipmi0: IPMI device rev. 0, firmware rev. 2.00, version 2.0, device support mask 0
ipmi0: Number of channels 2
...

The ipmi device has not been added to GENERIC64, but may be after further
testing. It may also eventually be added to the ipmi module at that point.

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Basic OPAL sensor support for POWER9 platforms

Summary:
PowerNV architectures (in the test case POWER9) export sensors via the device
tree, which are accessed via OPAL calls. This adds sysctl nodes

Basic OPAL sensor support for POWER9 platforms

Summary:
PowerNV architectures (in the test case POWER9) export sensors via the device
tree, which are accessed via OPAL calls. This adds sysctl nodes for each
device in a generic fashion. New sysctl nodes are:

dev.opal_sensor.N.sensor
dev.opal_sensor.N.sensor_min
dev.opal_sensor.N.sensor_max
dev.opal_sensor.N.type
dev.opal_sensor.N.label

These are rooted at a parent attachment under opal, called opalsens. This does
not add support for the "sensor groups" defined in the device tree.

Reviewed by: breno.leitao_gmail.com
Differential Revision: https://reviews.freebsd.org/D15362

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Simplify things a little

Rather than include a copy for memmove to call bcopy to call memcpy
(which handles overlapping copies), make memmove a strong reference to
memcpy to save the two calls.

Dif

Simplify things a little

Rather than include a copy for memmove to call bcopy to call memcpy
(which handles overlapping copies), make memmove a strong reference to
memcpy to save the two calls.

Differential Revision: https://reviews.freebsd.org/D15374

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Move MI-ish bcopy routine to libkern

riscv and powerpc have nearly identical bcopy.c that's
supposed to be mostly MI. Move it to the MI libkern.

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

Move MI-ish bcopy routine to libkern

riscv and powerpc have nearly identical bcopy.c that's
supposed to be mostly MI. Move it to the MI libkern.

Differential Revision: https://reviews.freebsd.org/D15374

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Remove the unused fuwintr() and suiwintr() functions.

Half of implementations always failed (returned (-1)) and they were
previously used in only one place.

Reviewed by: kib, andrew
Obtained from:

Remove the unused fuwintr() and suiwintr() functions.

Half of implementations always failed (returned (-1)) and they were
previously used in only one place.

Reviewed by: kib, andrew
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15102

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Fix another optional standard. Build openpic_ofw again.

Reverting r330925 for now

Fix fat-fingering ("optional standard") and move all the OF code to
being marked "standard", which is less confusing than having it conditional
on AIM CPUs here, and then picked up through options FD

Fix fat-fingering ("optional standard") and move all the OF code to
being marked "standard", which is less confusing than having it conditional
on AIM CPUs here, and then picked up through options FDT from conf/files
on Book-E.

Request by: jhibbits

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The expression (aim | fdt) is always true on PowerPC. The last PowerPC
platform that can run without a device tree (PS3) still uses the OF_*()
functions to check if one exists and OF_* is used uncond

The expression (aim | fdt) is always true on PowerPC. The last PowerPC
platform that can run without a device tree (PS3) still uses the OF_*()
functions to check if one exists and OF_* is used unconditionally in
core parts of the system like powerpc/machdep.c. Reflect this reality
in files.powerpc, for example by changing occurrences of aim | fdt to
standard.

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PowerNV: Fix I2C to compile if FDT is disabled

Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies