MFC r326276:

various: general 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.

No functional change intended.

MFC r302788, r303026, r305471

r302788:
Fix the type used to hold the value returned from getopt. On arm64 char is
unsigned so will never be -1.

r303026:
Add missing flags from acpidump. These are defined in the header, but not
printed. The HW_REDUCED flag is useful as it should be set on arm64 to
comply with the ARM Server Base Boot Requirements.

r305471:
Teach acpidump how to parse ACPI 5.1 tables found on the development
ThunderX units in the netperf cluster.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Use the headers from ACPI-CA to define various constants and structures
for table layouts, etc. rather than homerolling our own structures and
constants in acpidump.h.
- Verify the extended checksum on the RSDP.
- Handle new ACPI 3.0 fields in MADT including X2APIC entries and
UIDs for local SAPICs.
- Add handling for new ACPI 3.0 flags in the FADT.

Reviewed by: jkim
MFC after: 1 month

Document exact command preferred for sending ASL as part of bug reports.

Back out the -s flag and go back to dumping the SSDTs by default.

Add the -s flag to make dumping SSDTs optional (disabled by default).
Since we can only override the DSDT, a custom ASL dumped previously that
contained SSDTs would result in lots of multiple definition errors.

A longer-term fix involves adding the ability to override SSDTs to ACPI-CA.

MFC after: 3 days

Add support for SSDT tables. Dumping or disassembling the DSDT will
now include the contents if any SSDT table as well. This makes use
of the property that one can concatenate the body of SSDT tables to
the DSDT, updating the DSDT header (length and checksum) and end up
with a larger and valid DSDT table. Hence, this also works with -f.

Reviewed by: njl@

Rename FACP to FADT throughout.
Update FADT for new fields including pm_profile, pstate_cnt, and cst_cnt.
Add acpi_print_gas() for printing various address formats.
Print FACS contents.
Remove unused code.

Modify acpidump to use iasl(8) as the backend for disassembling AML.
Also clean up the output of dumped tables. Update the man page for the
new usage. Make WARNS=6 clean.

o Use sysctl machdep.acpi_root to get the physical address of the
RSDP. Scan the first 1MB on i386 if the sysctl fails,
o Extend struct ACPIrsdp with the ACPI 2.0 fields which involves
changing a prior reserved field into the ACPI revision,
o Only calculate the RSDP checksum on the first 20 bytes to remain
compatible with ACPI 1.0 tables; we don't check the extended
checksum covering the whole table,
o Use the length field in the RSDP to map the RSDP into the address
space so that we don't have to know about future extensions here.

Add support for decoding Buffer objects that contain PnP/ACPI resource
streams. Since the output is bulky, it's controlled by the '-r'
option.

Document this in the manpage, and clean up some awkward English a
little.

Fix UserTerms disassembling. Now that dumped ASL can be compiled with
ports/devel/acpitools (iasl).
- Merge AML parser to build ACPI namespace
- Comment header info. out so that ASL compiler ignore them
- Fix DSDT header size to be discarded when DSDT file is specified
for input (acpidump and amldb)
- Write DSDT header as well into DSDT file for output
- Fix some trivial typo (Concatenate and SizeOf)
- Remove DEBUG_FLAGS from Makefile (acpidump and amldb)

Remove dependence on old acpi driver from acpi userland tools.

- acpiconf Replace include files from old acpi driver to acpica driver.
New sleep type `4b' had been added (S4BIOS) for `-s' option.
Of course this has no effect because driver doesn't
support it for now :-)

- acpidump All needed structs in sys/dev/acpi/*.h had been merged
into local header file. No changes on its usage.

Update include paths for new header locations.

Submitted by: iwasaki

This commit was generated by cvs2svn to compensate for changes in r65285,
which included commits to RCS files with non-trunk default branches.

import acpidump(8) from ACPI For FreeBSD project.

Obtained from: ACPI For FreeBSD project