Unconditionally support the AMD64 GART HW.

AMD64 on-CPU GART support.
This also applies to AMD64 HW running 'i386' OS.

Submitted by: Jung-uk Kim <jkim@niksun.com>
Integration by: obrien

Add an "options MP_WATCHDOG" to i386. This option allows one of the
logical CPUs on a system to be used as a dedicated watchdog to cause a
drop to the debugger and/or generate an NMI to the boot pro

Add an "options MP_WATCHDOG" to i386. This option allows one of the
logical CPUs on a system to be used as a dedicated watchdog to cause a
drop to the debugger and/or generate an NMI to the boot processor if
the kernel ceases to respond. A sysctl enables the watchdog running
out of the processor's idle thread; a callout is launched to reset a
timer in the watchdog. If the callout fails to reset the timer for ten
seconds, the watchdog will fire. The sysctl allows you to select which
CPU will run the watchdog.

A sample "debug.leak_schedlock" is included, which causes a sysctl to
spin holding sched_lock in order to trigger the watchdog. On my Xeons,
the watchdog is able to detect this failure mode and break into the
debugger, which cannot otherwise be done without an NMI button.

This option does not currently work with sched_ule due to ule's push
notion of scheduling, similar to machdep.hlt_logical_cpus failing to
work with that scheduler.

On face value, this might seem somewhat inefficient, but there are a
lot of dual-processor Xeons with HTT around, so using one as a watchdog
for testing is not as inefficient as one might fear.

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Remove isa compat stuff.

Only cy, bs and wd in the tree still use it. I have a replacement for
cy that I need to test on ISA and PCI cards. bs and wd are pc98 only
drivers that appear to no longer

Remove isa compat stuff.

Only cy, bs and wd in the tree still use it. I have a replacement for
cy that I need to test on ISA and PCI cards. bs and wd are pc98 only
drivers that appear to no longer be necessary. I'll be removing them
when I hear back from the pc98 people.

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Fixed some style bugs (insertion sort errors, tab lossage, and ornation
of EOF).

Move LongRun support out of identcpu.c, where it hardly belongs, into its
own file and make it opt-in, not mandatory, depending on CPU_ENABLE_LONGRUN
config(8) option.

PR:
Submitted by:
Reviewed by:

Move LongRun support out of identcpu.c, where it hardly belongs, into its
own file and make it opt-in, not mandatory, depending on CPU_ENABLE_LONGRUN
config(8) option.

PR:
Submitted by:
Reviewed by:
Approved by:
Obtained from:
Discussed with: nate
MFC after: 2 weeks

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Add missing options from pcvt_conf.h to options.i386. This
allows the kernel build to survive config when these options
are specified in the config file.

Reviewed by: hm
Approved by: njl (mentor)

Add new CPU_ENABLE_TCC option, from NOTES:

CPU_ENABLE_TCC enables Thermal Control Circuitry (TCC) found in some
Pentium(tm) 4 and (possibly) later CPUs. When enabled and detected,
TCC allows to rest

Add new CPU_ENABLE_TCC option, from NOTES:

CPU_ENABLE_TCC enables Thermal Control Circuitry (TCC) found in some
Pentium(tm) 4 and (possibly) later CPUs. When enabled and detected,
TCC allows to restrict power consumption by using machdep.cpuperf*
sysctls. This operates independently of SpeedStep and is useful on
systems where other mechanisms such as apm(4) or acpi(4) don't work.

Given the fact that many, even modern, notebooks don't work properly
with Intel ACPI, this is indeed very useful option for notebook owners.

Obtained from: OpenBSD
MFC after: 2 weeks

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Add the NDISAPI option.

Garbage-collected CLK_USE_TSC_CALIBRATION.

i386/conf/NOTES, pc98/conf/NOTES:
Fixed the descriptions of the other CLK_* options.

The DEV_ACPI option is no longer used, so g/c it.

Connect the cx driver to its new location in the tree.
Update notes to reflect that cx is no longer a counted device
Update options for new cx option
# commented out ELAN_PPS and ELAN_XTAL since they

Connect the cx driver to its new location in the tree.
Update notes to reflect that cx is no longer a counted device
Update options for new cx option
# commented out ELAN_PPS and ELAN_XTAL since they produced errors

Submitted by: rik@cronyx.ru
Approved by: re@ <scottl>

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Rename the ELAN_* options to CPU_ELAN_* according the the brucification.

This commit was forgotten a few days ago.

Approved by: re@

Disable probing of HTT CPUs by default for the MP Table case. HTT CPUs
should only be used if they are enabled in the BIOS. Now that we support
enumerating CPUs using the ACPI MADT, any HTT machine

Disable probing of HTT CPUs by default for the MP Table case. HTT CPUs
should only be used if they are enabled in the BIOS. Now that we support
enumerating CPUs using the ACPI MADT, any HTT machine using ACPI should
respect the BIOS setting. For HTT machines with ACPI disabled in the
kernel, the MPTABLE_FORCE_HTT kernel option can be used to try to probe HTT
CPUs like have done in the past for the MP Table case. This option should
only be enabled if HTT is enabled in the BIOS.

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Fixed insertion sort errors in the opt_cpu.h section.

Removed banal comments about ELAN*. Complain about ELAN* being misnamed
instead (so that these options are not obviously related to a CPU and
d

Fixed insertion sort errors in the opt_cpu.h section.

Removed banal comments about ELAN*. Complain about ELAN* being misnamed
instead (so that these options are not obviously related to a CPU and
don't sort with CPU_ELAN).

Complain about CPU_DISABLE_CMPXCHG being in the wrong namespace.

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- Remove APIC_IO option.
- Add NO_MIXED_MODE, DEV_ACPI, and DEV_APIC options.

Introduce new CPU_SOEKRIS option to tell soekris hardware from other
hardware based on similar chipsets.

Fixup the sorting of some of the options. DISABLE_P* are still out of
order to keep all of the opt_pmap.h options together.

Detect Geode CPUs and initialize the 27MHz timecounter "Geode".

This timecounter is 2usec faster than the i8254 and has 22 times
better resolution.

EISA_SLOTS is mandantory to get opt_eisa.h
Put it into MI files.

Initiate de-orbit burn for fpu-less operation. 386+387 is still
theoretically supportable, but you'd really be happier with FreeBSD 2.1.8
on it.

unifdef -DLAZY_SWITCH and start to tidy up the associated glue.

Tidy up leftover lazy_switch instrumentation that is no longer needed.
This cleans up some #ifdef hell.

Moved the syscons options, kbd options and DEV_SPLASH to the MI options
file.

Options that go into homonymous headers shouldn't specify the header name.

Submitted by: Hiten Pandya <hiten@unixdaemons.com>