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merge conflicts between 20230628 and 20221020
Import acpica-20230628 (last was 20221020) ---------------------------------------- 28 June 2023. Summary of changes for version 20230628: 0) Global changes: Fixed a problem with the ASL/AML Timer() operator. Discovered by UBSAN: ?array-index-out-of-bounds in acpica/dswexec.c:401:12 index -1 is out of range for type 'acpi_operand_object?. Added AML_NO_OPERAND_RESOLVE flag to Timer (since there are no runtime arguments). Reported by: Abhishek Mainkar abmainkar@nvidia.com. Added a define for size of acpi_srat_generic_affinity DeviceHandle. Replaced a magic number with a define. The Linux kernel code will utilize this. Reported by Dave Jiang dave.jiang@intel.com. Added support for _DSC (Deepest State for Configuration) as per ACPI 6.5. 1) ACPICA kernel-resident subsystem: Added port definitions for CDAT SSLBIS. Add upstream port and any port definitions for SSLBIS. Reported by: Dave Jiang dave.jiang@intel.com. Fixed misspelled CDAT DSMAS define: ACPI_CEDT_DSMAS_NON_VOLATILE -> ACPI_CDAT_DSMAS_NON_VOLATILE. Reported by: Dave Jiang dave.jiang@intel.com. 1) ACPICA kernel-resident subsystem: Fix GCC 12 dangling-pointer warning. We're storing a persistent pointer to an ephemeral local variable which technically is a dangling pointer and the compiler is correct. However, since we never indirect the pointer, this is a safe operation and we can suppress the warning. Also, some C run-times (like MUSL) aren't including <stdint.h> indirectly so we must include it explicitly or we won't have the type definition for uintptr_t. 2) iASL Compiler/Disassembler and ACPICA tools:. IASL/RHCT: Enable dumping and compiling newly added nodes. The RHCT table is updated with new nodes. Add compile and dump functionality for these new structures. AcpiExec: Added a new command, ?interrupt?. The Interrupt command simulates an interrupt with a IntID (GSIV) equal to the first argument of the call/invocation. The acpiexec code simulates the behavior by OSPM: execute the _EVT method of the GED device associated with that IntID. Submitted by: Jose Marinho jose.marinho@arm.com. AcpiExec: Detect GED device and keep track of _EVT. The GED device is described by a _HID of ACPI0013. This code traverses the namespace identifying all GED devices. For each GED device in the namespace we record the Interrupt object and the _EVT method. This information is used when an interrupt is simulated via the ?interrupt? command. Submitted by: Jose Marinho jose.marinho@arm.com. ---------------------------------------- 31 March 2023. Summary of changes for version 20230331: This release is available at https://acpica.org/downloads 0) Global changes: Update all copyright notices to the year 2023. This effects all source modules, as well as utility signons. Add OS-specific support for Zephyr RTOS. Fix miscellaneous code that accesses various objects. Remove some dead code. Add C ?Flexible Array? support. Add support for 64 bit LoongArch compilation. Add first batch of RISC-V related definitions. Performed a global automated update to remove tabs, fix indentation issues, etc. 1) ACPICA kernel-resident subsystem: hwvalid: Drop port I/O validation. 2) ACPICA tools and utilities: iASL: Added full macro support in the preprocessor. Example: #define ABCD(a,b,c,d) a+b+c-d Known macro support limitations (at this time): No support for multi-line #define macros (backslash continuation lines) No support for the C-style ternary operator No support for the stringizing operator (#) No support for the concatenation (token pasting) operator (##) No support for variable number of macro arguments Add support for AMD Secure Processor Table (ASPT) version 1. Add support for Arm's MPAM ACPI table version 2. ACPI 6.5: MADT: add support for trace buffer extension in GICC. Headers: Delete bogus NodeArray array of pointers from AEST table. PHAT table support is still ongoing.
merge conflicts between acpica-20211217 and acpica-20220331
Import acpica-2022-03-31
----------------------------------------
31 March 2022. Summary of changes for version 20220331:
0) Global changes:
Update all copyright notices to the year 2022. This effects all source
modules, as well as utility signons.
1) ACPICA kernel-resident subsystem:
For the ASL Sleep() operator, issue a warning if the sleep value is
greater than 10 Milliseconds. Quick boottime is important, so warn about
sleeps greater than 10 ms. Distribution Linux kernels reach initrd in 350
ms, so excessive delays should be called out. 10 ms is chosen randomly,
but three of such delays would already make up ten percent of the
boottime.
Namespace: Avoid attempting to walk the Namespace if the Namespace does
not exist.
AML interpreter/iASL compiler: Add new Acpi 6.4 semantics for the
LoadTable and Load operators. DDB_HANDLE is gone, now loadtable returns a
pass/fail integer. Now load returns a pass/fail integer, as well as
storing the return value in an optional 2nd argument.
Headers: Use uintptr_t and offsetof() in Linux kernel builds. To avoid
"performing pointer subtraction with a null pointer has undefined
behavior" compiler warnings, use uintptr_t and offsetof() that are always
available during Linux kernel builds to define ACPI_UINTPTR_T and the
ACPI_TO_INTEGER() and ACPI_OFFSET() macros when building the ACPICA code
in the Linux kernel.
Added support for the Windows 11 _OSI string ("Windows 2021"). Submitted
by superm1.
executer/exsystem: Inform users about ACPI spec violation for the Stall()
operator. Values greater than 100 microseconds violate the ACPI
specification, so warn users about it. From the ACPI Specification
version 6.2 Errata A, 19.6.128 *Stall (Stall for a Short Time)*:
> The implementation of Stall is OS-specific, but must not relinquish
> control of the processor. Because of this, delays longer than 100
> microseconds must use Sleep instead of Stall.
2) iASL Compiler/Disassembler and ACPICA tools:
Data Table Compiler/Disassembler: Add support for the APMT table - ARM
Performance Monitoring Unit table. Submitted by @bwicaksononv.
Data Table Compiler/Disassembler: For MADT, add support for the OEM-
defined subtables (Types 0x80-0x7F).
Data Table Compiler: Fixed a problem with support for the SDEV table,
where a subtable Length was not computed correctly.
Data Table Compiler/Disassembler: Add/fix the CFMWS subtable to the CEDT
Acpi table support.
Data Table Compiler/Disassembler: Fix a compile issue with the CEDT and
add template. Submitted by MasterDrogo.
Data Table Compiler/Disassembler: NHLT Changes provided by Piotr Maziarz:
iASL/NHLT: Rename linux specific structures to DeviceInfo to improve
readability of the code.
iASL/NHLT: Fix parsing undocumented bytes at the end of Endpoint.
Undocumented bytes at the end of Endpoint Descriptor can be present
independently of Linux-specific structures. Their size can also vary.
iASL/NHLT: Treat TableTerminator as SpecificConfig. SpecificConfig has 4
bytes of size and then an amount of bytes specified by size. All of the
terminators that I've seen had a size equal to 4, but theoretically it
can vary.
iASL/AcpiExec: Use _exit instead of exit in signal handers (ctrl-C).
iASL: Remove a remark due to excessive output. Removed a remark for
duplicate Offset() operators, due to a user complaint.
Sync with HEAD.
Sync with HEAD.
Merge local changes with acpica-20210331
31 March 2021. Summary of changes for version 20210331: This release is available at https://acpica.org/downloads, and includes all ACPI 6.4 support 1) ACPICA kernel-resident subsystem: ACPI 6.4: iASL: deprecate DDBHandleObj keyword Always create namespace nodes using AcpiNsCreateNode(). ACPICA is allocating an object using kmalloc(), but then frees it using kmem_cache_free(<"Acpi-Namespace" kmem_cache>). This is wrong. Fixed a race condition in generic serial bus operation region handler. Fixed by Hans de Goede. 2) iASL Compiler/Disassembler and ACPICA tools: ACPI 6.4: NFIT: add Location Cookie field ACPI 6.4: HMAT: add new fields/flags ACPI 6.4: Add new flags in SRAT ACPI 6.4: add SDEV secure access components ACPI 6.4: add Csi2Bus resource template ACPI 6.4: add support for PHAT table ACPI 6.4: add support for PMTT table Add disassembly support for the IVRS table. Compilation of the table is not yet complete. Fixed a potential infinite loop due to type mismatch. The for-loop is using a UINT8 counter and comparing the upper limit against a UINT32 AslGbl_ExpectedMessagesIndex maximum. In the case where AslGbl_ExpectedMessagesIndex is > 255 the counter i will wrap around to zero and the loop will never exit. I suspect the AslGbl_ExpectedMessagesIndex is never that high, but fixing this does future proof the code and cleans up static analysis warnings.Colin King. iASL/TableCompiler: update it with IORT table E.b revision changes. From shamiali2008. iASL/TableCompiler: Add compilation support for the VIOT table. Signed-off-by: Jean-Philippe Brucker. iASL/TableCompiler: Add compilation support for CEDT table. Also, update the CEDT template.
Merge changes from current as of 20200406
merge conflicts
---------------------------------------- 26 March 2020. Summary of changes for version 20200326: 1) ACPICA kernel-resident subsystem: Performed a code clean-up to prevent build errors on early versions of GCC-10. Added the NHLT table signature. iASL data table compiler/disassembler support for this table is coming soon. 2) iASL Compiler/Disassembler and ACPICA tools: AcpiExec: Fixed several problems with the namespace initialization file (-fi<filename> option). Includes fixes to prevent AE_ALREADY_EXISTS errors, several seg faults, and enhancements to line parsing within the init file. In addition, each object found in the init file and it's new value is displayed, as well as any such entries that do not have a corresponding name in the namespace. For reference, the syntax for the various supported data types are presented below: PCHG 0x777788889999BBBB // Integer \DEV1.STR1 "XYZ" // String BUF1 (88 99 AA) // Buffer PKG1 [0x1111 0x2222] // Package \BF1 0x7980 // BufferField RCRV 0x0123456789ABCDEF // Field Unit iASL: Added a custom iASL macro __EXPECT__(iASL-Error-Code). This macro can be used anywhere in a given ASL file to configure iASL to expect an iASL compiler error code on the line where this macro was placed. If the error code does not exist, an error is generated. This is intended to be used for ACPICA's ASL test suite, but can be used by ASL developers as well. iASL: table compiler: Implemented IVRS IVHD type 11h parsing. The AMD IVRS table parsing supported only IVHD type 10h structures. Parsing an IVHD type 11h caused the iasl to report unknown subtable type. Add necessary structure definition for IVHD type 11h and apply correct parsing method based on subtable type. Micha? ?ygowski. iASL: table compiler: Fixed IVRS table IVHD type 10h reserved field name According to AMD IOMMU Specification Revision 3.05 the reserved field should be IOMMU Feature Reporting. Change the name of the field to the correct one. Micha? ?ygowski. acpiexec: removed redeclaration of AcpiGbl_DbOpt_NoRegionSupport. Patch based on suggestions by David Seifert and Benjamin Berg. iASL: table compiler: removed an unused variable (DtCompilerParserResult) causing linking errors. Patch based on suggestions by David Seifert and Benjamin Berg. iASL: table compiler: make LexBuffer static to avoid linking errors in newer compilers. Patch based on suggestions by David Seifert and Benjamin Berg. iASL: fixed type matching between External and Named objects. External object types can only be expressed with ACPI object type values that are defined in the ACPI spec. However, iASL uses ACPI object type values that are local to ACPICA in addition to the values defined in the ACPI spec. This change implements type matching to map some object type values specific to ACPICA to ones that are defined in the ACPI spec. iASL: Dropped the type mismatch compiler error that can arise from External declarations to a warning. This warning can occur when there is a type difference between the external declaration and the actual object declaration (when compiling multiple files/modules simultaneously). iASL: removed an incorrect error message regarding externals. This change removes an incorrect error that is emitted when a duplicate external declaration does not contain a type that opens a scope. This is incorrect because the duplicate external with conflicting types are already caught by iASL and it doesn't make any sense to enforce what this conflicting type should be. AcpiXtract: fix AX_IS_TABLE_BLOCK_HEADER macro. This macro needs to be surrounded by parens. Otherwise, a logical statement that applies a logical not operator to this macro could result in a computation that applies the operator to the left side of the logical and but not the right. Reported-by: John Levon <john.levon@joyent.com> Fixed a problem with the local version of sprint(): On 32-bit, the provided sprintf() is non-functional: with a size of ACPI_UINT32_MAX, String + Size will wrap, meaning End < Start, and AcpiUtBoundStringOutput() will never output anything as a result. The symptom seen of this was acpixtract failing to output anything -- with a custom build that included utprint.c. Signed-off-by: John Levon <john.levon@joyent.com> iASL: Changed the "PlatformCommChannel" ASL keyword to "PCC", as per the ACPI specification. ---------------------------------------- 14 February 2020. Summary of changes for version 20200214: 1) ACPICA kernel-resident subsystem: Enable sleep button on ACPI legacy wake: Hibernation (S4) is triggered in a guest when it receives a sleep trigger from the hypervisor. When the guest resumes from this power state, it does not see the SleepEnabled bit. In other words, the sleepHibernation (S4) is triggered in a guest when it receives a sleep trigger from the hypervisor. When the guest resumes from this power state, it does not see the SleepEnabled bit. In other words, the sleep button is not enabled on waking from an S4 state. This causes subsequent invocation of sleep state to fail since the guest.button is not enabled on waking from an S4 state. This causes subsequent invocation of sleep state to fail in the guest. Fix this problem by enabling the sleep button in ACPI legacy wake. From Anchal Agarwal <anchalag@amazon.com>. Implemented a new external interface, AcpiAnyGpeStatusSet (). To be used for checking the status bits of all enabled GPEs in one go. It is needed to distinguish spurious SCIs from genuine ones when deciding whether or not to wake up the system from suspend-to-idle. Generic Makefiles: replace HOST name with ACPI_HOST: Some machines may be using HOST in their environment to represent the host name for their machines. Avoid this problem by renaming this variable from HOST to ACPI_HOST. MSVC 2017 project files: Enable multiprocessor generation to improve build performance. Added a macro to get the byte width of a Generic Address structure. New ACPI_ACCESS_BYTE_WIDTH is in addition to the existing ACPI_ACCESS_BIT_WIDTH. From Mika Westerberg. 2) iASL Compiler/Disassembler and ACPICA tools: iASL: Implemented full support for the (optional, rarely used) ReturnType and ParameterTypesList for the Method, Function, and External operators. For Method declarations, the number of individual ParameterTypes must match the declaration of the number of arguments (NumArgs). This also Fixes a problem with the External operator where extra/extraneous bytes were emitted in the AML code if the optional ReturnType/ParameterTypes were specified for a MethodObj declaration. New error message: 1) Method NumArgs count does not match length of ParameterTypes list iASL: Implemented detection of type mismatches between External declarations and named object declarations. Also, detect type mismatches between multiple External declarations of the same Name. New error messages: 1) Type mismatch between external declaration and actual object declaration detected 2) Type mismatch between multiple external declarations detected iASL: Implemented new error messages for External operators that specify a ReturnType and/or ParameterTypesList for any object type other than control methods (MethodObj). New error messages: 1) Return type is only allowed for Externals declared as MethodObj 2) Parameter type is only allowed for Externals declared as MethodObj iASL: Implemented two new remark/warning messages for ASL code that creates named objects from within a control method. This is very inefficient since the named object must be created and deleted each time the method is executed. New messages: 1) Creation of named objects within a method is highly inefficient, use globals or method local variables instead (remark) 2) Static OperationRegion should be declared outside control method (warning) iASL: Improved illegal forward reference detection by adding support to detect forward-reference method invocations. iASL: Detect and issue an error message for NameStrings that contain too many individual NameSegs (>255). This is an AML limitation that is defined in the ACPI specification. New message: 1) NameString contains too many NameSegs (>255) acpidump: windows: use GetSystemFirmwareTable API for all tables except SSDT. By using this API, acpidump is able to get all tables in the XSDT iASL: Removed unused parser file and updated msvc2017 project files. Removed the obsolete AslCompiler.y from the repository. iASL: msvc2017: Fixed macros in the file dependency list to prevent unnecessary rebuilds. Replace %(Directory) with %(RelativeDir). Disassembler: Prevent spilling error messages to the output file. All errors are directed to the console instead. These error messages prevented re-compilation of the resulting disassembled ASL output file (.DSL). ---------------------------------------- 10 January 2020. Summary of changes for version 20200110: 1) ACPICA kernel-resident subsystem: Updated all copyrights to 2020. This affects all ACPICA source code modules. 2) iASL Compiler/Disassembler and ACPICA tools: ASL test suite (ASLTS): Updated all copyrights to 2020. Tools and utilities: Updated all signon copyrights to 2020. iASL: fix forward reference analysis for field declarations. Fixes forward reference analysis for field declarations by searching the parent scope for the named object when the object is not present in the current scope. iASL: Improved the error output for ALREADY_EXISTS errors. Now, the full pathname of the name that already exists is printed. iASL: Enhance duplicate Case() detection for buffers. Add check for buffers with no initializer list (these buffers will be filled with zeros at runtime.)
Sync with HEAD
merge conflicts
----------------------------------------
05 April 2019. Summary of changes for version 20190405:
1) ACPICA kernel-resident subsystem:
Event Manager: History: Commit 18996f2db918 ("ACPICA: Events: Stop
unconditionally clearing ACPI IRQs during suspend/resume") was added
earlier to stop clearing of event status bits unconditionally on suspend
and resume paths. Though this change fixed an issue on suspend path, it
introduced regressions on several resume paths. In the case of S0ix,
events are enabled as part of device suspend path. If status bits for the
events are set when they are enabled, it could result in premature wake
from S0ix. If status is cleared for any event that is being enabled so
that any stale events are cleared out. In case of S0ix, events are
enabled as part of device suspend path. If status bits for the events are
set when they are enabled, it could result in premature wake from S0ix.
This change ensures that status is cleared for any event that is being
enabled so that any stale events are cleared out.
2) iASL Compiler/Disassembler and ACPICA tools:
iASL: Implemented an enhanced multiple file compilation that combines
named objects from all input files to a single namespace. With this
feature, any unresolved external declarations as well as duplicate named
object declarations can be detected during compilation rather than
generating errors much later at runtime. The following commands are
examples that utilize this feature:
iasl dsdt.asl ssdt.asl
iasl dsdt.asl ssdt1.asl ssdt2.asl
iasl dsdt.asl ssdt*.asl
----------------------------------------
29 March 2019. Summary of changes for version 20190329:
1) ACPICA kernel-resident subsystem:
Namespace support: Remove the address nodes from global list after method
termination. The global address list contains pointers to namespace nodes
that represent Operation Regions. This change properly removes Operation
Region namespace nodes that are declared dynamically during method
execution.
Linux: Use a different debug default than ACPICA. There was a divergence
between Linux and the ACPICA codebases. In order to resolve this
divergence, Linux now declares its own debug default in aclinux.h
Renamed some internal macros to improve code understanding and
maintenance. The macros below all operate on single 4-character ACPI
NameSegs, not generic strings (old -> new):
ACPI_NAME_SIZE -> ACPI_NAMESEG_SIZE
ACPI_COMPARE_NAME -> ACPI_COMPARE_NAMESEG
ACPI_MOVE_NAME -> ACPI_COPY_NAMESEG
Fix for missing comma in array declaration for the AcpiGbl_GenericNotify
table.
Test suite: Update makefiles, add PCC operation region support
2) iASL Compiler/Disassembler and Tools:
iASL: Implemented additional illegal forward reference detection. Now
detect and emit an error upon detection of a forward reference from a
Field to an Operation Region. This will fail at runtime if allowed to
pass the compiler.
AcpiExec: Add an address list check for dynamic Operation Regions. This
feature performs a sanity test for each node the global address list.
This is done in order to ensure that all dynamic operation regions are
properly removed from the global address list and no dangling pointers
are left behind.
Disassembler: Improved generation of resource pathnames. This change
improves the code that generates resource descriptor and resource tag
pathnames. The original code used a bunch of str* C library functions
that caused warnings on some compilers.
iASL: Removed some uses of strncpy and replaced with memmove. The strncpy
function can overwrite buffers if the calling code is not very careful.
In the case of generating a module/table header, use of memmove is a
better implementation.
3) Status of new features that have not been completed at this time:
iASL: Implementing an enhanced multiple file compilation into a single
namespace feature (Status): This feature will be released soon, and
allows multiple ASL files to be compiled into the same single namespace.
By doing so, any unresolved external declarations as well as duplicate
named object declarations can be detected during compilation (rather than
later during runtime). The following commands are examples that utilize
this feature:
iasl dsdt.asl ssdt.asl
iasl dsdt.asl ssdt1.asl ssdt2.asl
iasl dsdt.asl ssdt*.asl
ASL tutorial status: Feedback is being gathered internally and the
current plan is to publish this tutorial on the ACPICA website after a
final review by a tech writer.
----------------------------------------
15 February 2019. Summary of changes for version 20190215:
0) Support for ACPI specification version 6.3:
Add PCC operation region support for the AML interpreter. This adds PCC
operation region support in the AML interpreter and a default handler for
acpiexec. The change also renames the PCC region address space keyword to
PlatformCommChannel.
Support for new predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG.
These methods provide OSPM with health information and device boot
status.
PDTT: Add TriggerOrder to the PCC Identifier structure. The field value
defines if the trigger needs to be invoked by OSPM before or at the end
of kernel crash dump processing/handling operation.
SRAT: Add Generic Affinity Structure subtable. This subtable in the SRAT
is used for describing devices such as heterogeneous processors,
accelerators, GPUs, and IO devices with integrated compute or DMA
engines.
MADT: Add support for statistical profiling in GICC. Statistical
profiling extension (SPE) is an architecture-specific feature for ARM.
MADT: Add online capable flag. If this bit is set, system hardware
supports enabling this processor during OS runtime.
New Error Disconnect Recover Notification value. There are a number of
scenarios where system Firmware in collaboration with hardware may
disconnect one or more devices from the rest of the system for purposes
of error containment. Firmware can use this new notification value to
alert OSPM of such a removal.
PPTT: New additional fields in Processor Structure Flags. These flags
provide more information about processor topology.
NFIT/Disassembler: Change a field name from "Address Range" to "Region
Type".
HMAT updates: make several existing fields to be reserved as well as
rename subtable 0 to "memory proximity domain attributes".
GTDT: Add support for new GTDT Revision 3. This revision adds information
for the EL2 timer.
iASL: Update the HMAT example template for new fields.
iASL: Add support for the new revision of the GTDT (Rev 3).
1) ACPICA kernel-resident subsystem:
AML Parser: fix the main AML parse loop to correctly skip erroneous
extended opcodes. AML opcodes come in two lengths: 1-byte opcodes and 2-
byte extended opcodes. If an error occurs during an AML table load, the
AML parser will continue loading the table by skipping the offending
opcode. This implements a "load table at any cost" philosophy.
2) iASL Compiler/Disassembler and Tools:
iASL: Add checks for illegal object references, such as a reference
outside of method to an object within a method. Such an object is only
temporary.
iASL: Emit error for creation of a zero-length operation region. Such a
region is rather pointless. If encountered, a runtime error is also
implemented in the interpeter.
Debugger: Fix a possible fault with the "test objects" command.
iASL: Makefile: support parent directory filenames containing embedded
spaces.
iASL: Update the TPM2 template to revision 4.
iASL: Add the ability to report specific warnings or remarks as errors.
Disassembler: Disassemble OEMx tables as actual AML byte code.
Previously, these tables were treated as "unknown table".
iASL: Add definition and disassembly for TPM2 revision 3.
iASL: Add support for TPM2 rev 3 compilation.
----------------------------------------
08 January 2019. Summary of changes for version 20190108:
1) ACPICA kernel-resident subsystem:
Updated all copyrights to 2019. This affects all source code modules.
2) iASL Compiler/Disassembler and Tools:
ASL test suite (ASLTS): Updated all copyrights to 2019.
Tools: Updated all signon copyrights to 2019.
AcpiExec: Added a new option to dump extra information concerning any
memory leaks detected by the internal object/cache tracking mechanism. -
va
iASL: Updated the table template for the TPM2 table to the newest version
of the table (Revision 4)
Sync with HEAD, resolve some conflicts
Merge conflicts; STA methods and fields are not present anymore.
----------------------------------------
13 March 2018. Summary of changes for version 20180313:
1) ACPICA kernel-resident subsystem:
Implemented various improvements to the GPE support:
1) Dispatch all active GPEs at initialization time so that no GPEs are
lost.
2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled
before devices are enumerated.
3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that
IRQs are not lost.
4) Add parallel GPE handling to eliminate the possibility of dispatching
the same GPE twice.
5) Dispatch any pending GPEs after enabling for the first time.
AcpiGetObjectInfo - removed support for the _STA method. This was causing
problems on some platforms.
Added a new _OSI string, "Windows 2017.2".
Cleaned up and simplified the module-level code support. These changes
are in preparation for the eventual removal of the legacy MLC support
(deferred execution), replaced by the new MLC architecture which executes
the MLC as a table is loaded (DSDT/SSDTs).
Changed a compile-time option to a runtime option. Changes the option to
ignore ACPI table load-time package resolution errors into a runtime
option. Used only for platforms that generate many AE_NOT_FOUND errors
during boot. AcpiGbl_IgnorePackageResolutionErrors.
Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some
ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid
compilation errors from unused variables (seen with some compilers).
2) iASL Compiler/Disassembler and Tools:
ASLTS: parallelized execution in order to achieve an (approximately) 2X
performance increase.
ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves
error reporting.
----------------------------------------
09 February 2018. Summary of changes for version 20180209:
1) ACPICA kernel-resident subsystem:
Completed the final integration of the recent changes to Package Object
handling and the module-level AML code support. This allows forward
references from individual package elements when the package object is
declared from within module-level code blocks. Provides compatibility
with other ACPI implementations.
The new architecture for the AML module-level code has been completed and
is now the default for the ACPICA code. This new architecture executes
the module-level code in-line as the ACPI table is loaded/parsed instead
of the previous architecture which deferred this code until after the
table was fully loaded. This solves some ASL code ordering issues and
provides compatibility with other ACPI implementations. At this time,
there is an option to fallback to the earlier architecture, but this
support is deprecated and is planned to be completely removed later this
year.
Added a compile-time option to ignore AE_NOT_FOUND exceptions during
resolution of named reference elements within Package objects. Although
this is potentially a serious problem, it can generate a lot of
noise/errors on platforms whose firmware carries around a bunch of unused
Package objects. To disable these errors, define
ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All
errors are always reported for ACPICA applications such as AcpiExec.
Fixed a regression related to the explicit type-conversion AML operators
(ToXXXX). The regression was introduced early in 2017 but was not seen
until recently because these operators are not fully supported by other
ACPI implementations and are thus rarely used by firmware developers. The
operators are defined by the ACPI specification to not implement the
"implicit result object conversion". The regression incorrectly
introduced this object conversion for the following explicit conversion
operators:
ToInteger
ToString
ToBuffer
ToDecimalString
ToHexString
ToBCD
FromBCD
2) iASL Compiler/Disassembler and Tools:
iASL: Fixed a problem with the compiler constant folding feature as
related to the ToXXXX explicit conversion operators. These operators do
not support the "implicit result object conversion" by definition. Thus,
ASL expressions that use these operators cannot be folded to a simple
Store operator because Store implements the implicit conversion. This
change uses the CopyObject operator for the ToXXXX operator folding
instead. CopyObject is defined to not implement implicit result
conversions and is thus appropriate for folding the ToXXXX operators.
iASL: Changed the severity of an error condition to a simple warning for
the case where a symbol is declared both locally and as an external
symbol. This accommodates existing ASL code.
AcpiExec: The -ep option to enable the new architecture for module-level
code has been removed. It is replaced by the -dp option which instead has
the opposite effect: it disables the new architecture (the default) and
enables the legacy architecture. When the legacy code is removed in the
future, the -dp option will be removed also.
----------------------------------------
05 January 2018. Summary of changes for version 20180105:
1) ACPICA kernel-resident subsystem:
Updated all copyrights to 2018. This affects all source code modules.
Fixed a possible build error caused by an unresolved reference to the
AcpiUtSafeStrncpy function.
Removed NULL pointer arithmetic in the various pointer manipulation
macros. All "(void *) NULL" constructs are converted to "(void *) 0".
This eliminates warnings/errors in newer C compilers. Jung-uk Kim.
Added support for A32 ABI compilation, which uses the ILP32 model. Anuj
Mittal.
2) iASL Compiler/Disassembler and Tools:
ASLTS: Updated all copyrights to 2018.
Tools: Updated all signon copyrights to 2018.
AcpiXtract: Fixed a regression related to ACPI table signatures where the
signature was truncated to 3 characters (instead of 4).
AcpiExec: Restore the original terminal mode after the use of the -v and
-vd options.
ASLTS: Deployed the iASL __METHOD__ macro across the test suite.
----------------------------------------
14 December 2017. Summary of changes for version 20171214:
1) ACPICA kernel-resident subsystem:
Fixed a regression in the external (public) AcpiEvaluateObjectTyped
interface where the optional "pathname" argument had inadvertently become
a required argument returning an error if omitted (NULL pointer
argument).
Fixed two possible memory leaks related to the recently developed "late
resolution" of reference objects within ASL Package Object definitions.
Added two recently defined _OSI strings: "Windows 2016" and "Windows
2017". Mario Limonciello.
Implemented and deployed a safer version of the C library function
strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
creation of unterminated strings as a possible result of a standard
strncpy.
Cleaned up and restructured the global variable file (acglobal.h). There
are many changes, but no functional changes.
2) iASL Compiler/Disassembler and Tools:
iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
optional OemData field at the end of the table was incorrectly required
for proper compilation. It is now correctly an optional field.
ASLTS: The entire suite was converted from standard ASL to the ASL+
language, using the ASL-to-ASL+ converter which is integrated into the
iASL compiler. A binary compare of all output files has verified the
correctness of the conversion.
iASL: Fixed the source code build for platforms where "char" is unsigned.
This affected the iASL lexer only. Jung-uk Kim.
update from HEAD
Sync with HEAD
Sync with HEAD
Sync with HEAD
file utnonansi.c was added on branch tls-maxphys on 2017-12-03 11:37:45 +0000
One more time in the right place...
----------------------------------------
19 January 2017. Summary of changes for version 20170119:
This release is available at https://acpica.org/downloads
1) General ACPICA software:
Entire source code base: Added the 2017 copyright to all source code
legal/licensing module headers and utility/tool signons. This includes
the standard Linux dual-license header. This affects virtually every file
in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
the ACPICA test suite.
2) iASL Compiler/Disassembler and Tools:
iASL: Removed/fixed an inadvertent remark when a method argument
containing a reference is used as a target operand within the method (and
never used as a simple argument), as in the example below. Jeffrey Hugo.
dsdt.asl 1507: Store(0x1, Arg0)
Remark 2146 - ^ Method Argument is never used (Arg0)
All tools: Removed the bit width of the compiler that generated the tool
from the common signon for all user space tools. This proved to be
confusing and unnecessary. This includes similar removal of HARDWARE_NAME
from the generic makefiles (Thomas Petazzoni). Example below.
Old:
ASL+ Optimizing Compiler version 20170119-32
ASL+ Optimizing Compiler version 20170119-64
New:
ASL+ Optimizing Compiler version 20170119
----------------------------------------
22 December 2016. Summary of changes for version 20161222:
1) ACPICA kernel-resident subsystem:
AML Debugger: Implemented a new mechanism to simplify and enhance
debugger integration into all environments, including kernel debuggers
and user-space utilities, as well as remote debug services. This
mechanism essentially consists of new OSL interfaces to support debugger
initialization/termination, as well as wait/notify interfaces to perform
the debugger handshake with the host. Lv Zheng.
New OSL interfaces:
AcpiOsInitializeDebugger (void)
AcpiOsTerminateDebugger (void)
AcpiOsWaitCommandReady (void)
AcpiOsNotifyCommandComplete (void)
New OS services layer:
osgendbg.c -- Example implementation, and used for AcpiExec
Update for Generic Address Space (GAS) support: Although the AccessWidth
and/or BitOffset fields of the GAS are not often used, this change now
fully supports these fields. This affects the internal support for FADT
registers, registers in other ACPI data tables, and the AcpiRead and
AcpiWrite public interfaces. Lv Zheng.
Sleep support: In order to simplify integration of ACPI sleep for the
various host operating systems, a new OSL interface has been introduced.
AcpiOsEnterSleep allows the host to perform any required operations
before the final write to the sleep control register(s) is performed by
ACPICA. Lv Zheng.
New OSL interface:
AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
Called from these internal interfaces:
AcpiHwLegacySleep
AcpiHwExtendedSleep
EFI support: Added a very small EFI/ACPICA example application. Provides
a simple demo for EFI integration, as well as assisting with resolution
of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
source/tools/efihello/efihello.c
Local C library: Implemented several new functions to enhance ACPICA
portability, for environments where these clib functions are not
available (such as EFI). Lv Zheng:
putchar
getchar
strpbrk
strtok
memmove
Fixed a regression where occasionally a valid resource descriptor was
incorrectly detected as invalid at runtime, and a
AE_AML_NO_RESOURCE_END_TAG was returned.
Fixed a problem with the recently implemented support that enables
control method invocations as Target operands to many ASL operators.
Warnings of this form: "Needed type [Reference], found [Processor]" were
seen at runtime for some method invocations.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
Previous Release:
Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Enhanced output by adding the capability to detect and
disassemble ASL Switch/Case statements back to the original ASL source
code instead of if/else blocks. David Box.
AcpiHelp: Split a large file into separate files based upon
functionality/purpose. New files are:
ahaml.c
ahasl.c
----------------------------------------
17 November 2016. Summary of changes for version 20161117:
1) ACPICA kernel-resident subsystem:
Table Manager: Fixed a regression introduced in 20160729, "FADT support
cleanup". This was an attempt to remove all references in the source to
the FADT version 2, which never was a legal version number. It was
skipped because it was an early version of 64-bit support that was
eventually abandoned for the current 64-bit support.
Interpreter: Fixed a problem where runtime implicit conversion was
incorrectly disabled for the ASL operators below. This brings the
behavior into compliance with the ACPI specification:
FromBCD
ToBCD
ToDecimalString
ToHexString
ToInteger
ToBuffer
Table Manager: Added a new public interface, AcpiPutTable, used to
release and free an ACPI table returned by AcpiGetTable and related
interfaces. Lv Zheng.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
Previous Release:
Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Fixed a regression for disassembly of Resource Template.
Detection of templates in the AML stream missed some types of templates.
iASL: Fixed a problem where an Access Size error was returned for the PCC
address space when the AccessSize of the GAS register is greater than a
DWORD. Hoan Tran.
iASL: Implemented several grammar changes for the operators below. These
changes are slated for the next version of the ACPI specification:
RefOf - Disallow method invocation as an operand
CondRefOf - Disallow method invocation as an operand
DerefOf - Disallow operands that use the result from operators
that
do not return a reference (Changed TermArg to
SuperName).
iASL: Control method invocations are now allowed for Target operands, as
per the ACPI specification. Removed error for using a control method
invocation as a Target operand.
Disassembler: Improved detection of Resource Templates, Unicode, and
Strings within Buffer objects. These subtypes do not contain a specific
opcode to indicate the originating ASL code, and they must be detected by
other means within the disassembler.
iASL: Implemented an optimization improvement for 32-bit ACPI tables
(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
only after 64-bit to 32-bit truncation. A truncation warning message is
still emitted, however.
AcpiXtract: Implemented handling for both types of line terminators (LF
or CR/LF) so that it can accept AcpiDump output files from any system.
Peter Wu.
AcpiBin: Added two new options for comparing AML files:
-a: compare and display ALL mismatches
-o: start compare at this offset into the second file
Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
Sync with HEAD
Import acpica-20160930:
----------------------------------------
30 September 2016. Summary of changes for version 20160930:
1) ACPICA kernel-resident subsystem:
Fixed a regression in the internal AcpiTbFindTable function where a non
AE_OK exception could inadvertently be returned even if the function did
not fail. This problem affects the following operators:
DataTableRegion
LoadTable
Fixed a regression in the LoadTable operator where a load to any
namespace location other than the root no longer worked properly.
Increased the maximum loop count value that will result in the
AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
prevent infinite loops within the AML interpreter and thus the host OS
kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
1,048,575).
Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
acpixf.h file. This allows hosts to easily configure the maximum loop
count at runtime.
Removed an illegal character in the strtoul64.c file. This character
caused errors with some C compilers.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
Previous Release:
Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
the simpler ASL ElseIf keyword. During the conversion, a trailing If
block could be lost and missing from the disassembled output.
iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
the missing rule caused a parse error when using the Index operator as an
operand to ObjectType. This construct now compiles properly. Example:
ObjectType(PKG1[4]).
iASL: Correctly handle unresolved symbols in the hardware map file (-lm
option). Previously, unresolved symbols could cause a protection fault.
Such symbols are now marked as unresolved in the map file.
iASL: Implemented support to allow control method invocations as an
operand to the ASL DeRefOf operator. Example:
DeRefOf(MTH1(Local0))
Disassembler: Improved support for the ToPLD ASL macro. Detection of a
possible _PLD buffer now includes examination of both the normal buffer
length (16 or 20) as well as the surrounding AML package length.
Disassembler: Fixed a problem with the decoding of complex expressions
within the Divide operator for ASL+. For the case where both the quotient
and remainder targets are specified, the entire statement cannot be
disassembled. Previously, the output incorrectly contained a mix of ASL-
and ASL+ operators. This mixed statement causes a syntax error when
compiled. Example:
Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
disassembled to:
Divide (INT1 + 6, 128, RSLT, QUOT)
iASL/Tools: Added support to process AML and non-AML ACPI tables
consistently. For the disassembler and AcpiExec, allow all types of ACPI
tables (AML and data tables). For the iASL -e option, allow only AML
tables (DSDT/SSDT).
----------------------------------------
31 August 2016. Summary of changes for version 20160831:
1) ACPICA kernel-resident subsystem:
Improve support for the so-called "module-level code", which is defined
to be math, logical and control AML opcodes that appear outside of any
control method. This change improves the support by adding more opcodes
that can be executed in the manner. Some other issues have been solved,
and the ASL grammar changes to support such code under all scope
operators (Device, etc.) are complete. Lv Zheng.
UEFI support: these OSL functions have been implemented. This is an
additional step toward supporting the AcpiExec utility natively (with
full hardware access) under UEFI. Marcelo Ferreira.
AcpiOsReadPciConfiguration
AcpiOsWritePciConfiguration
Fixed a possible mutex error during control method auto-serialization. Lv
Zheng.
Updated support for the Generic Address Structure by fully implementing
all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
Zheng.
Updated the return value for the internal _OSI method. Instead of
0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
implementations, and will be reflected and clarified in the next version
of the ACPI specification.
Implemented two new table events that can be passed to an ACPICA table
handler. These events are used to indicate a table installation or
uninstallation. These events are used in addition to existed table load
and unload events. Lv Zheng.
Implemented a cleanup for all internal string-to-integer conversions.
Consolidate multiple versions of this functionality and limit possible
bases to either 10 or 16 to simplify the code. Adds a new file,
utstrtoul64.
Cleanup the inclusion order of the various compiler-specific headers.
This simplifies build configuration management. The compiler-specific
headers are now split out from the host-specific headers. Lv Zheng.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
2) iASL Compiler/Disassembler and Tools:
iASL/AcpiExec: Added a command line option to display the build date/time
of the tool (-vd). This can be useful to verify that the correct version
of the tools are being used.
AML Debugger: Implemented a new subcommand ("execute predef") to execute
all predefined control methods and names within the current namespace.
This can be useful for debugging problems with ACPI tables and the ACPI
namespace.
----------------------------------------
29 July 2016. Summary of changes for version 20160729:
1) ACPICA kernel-resident subsystem:
Implemented basic UEFI support for the various ACPICA tools. This
includes:
1) An OSL to implement the various AcpiOs* interfaces on UEFI.
2) Support to obtain the ACPI tables on UEFI.
3) Local implementation of required C library functions not available on
UEFI.
4) A front-end (main) function for the tools for UEFI-related
initialization.
The initial deployment of this support is the AcpiDump utility executing
as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
Current environments supported are Linux/Unix. MSVC generation is not
supported at this time. See the generate/efi/README file for build
instructions. Lv Zheng.
Future plans include porting the AcpiExec utility to execute natively on
the platform with I/O and memory access. This will allow viewing/dump of
the platform namespace and native execution of ACPI control methods that
access the actual hardware. To fully implement this support, the OSL
functions below must be implemented with UEFI interfaces. Any community
help in the implementation of these functions would be appreciated:
AcpiOsReadPort
AcpiOsWritePort
AcpiOsReadMemory
AcpiOsWriteMemory
AcpiOsReadPciConfiguration
AcpiOsWritePciConfiguration
Restructured and standardized the C library configuration for ACPICA,
resulting in the various configuration options below. This includes a
global restructuring of the compiler-dependent and platform-dependent
include files. These changes may affect the existing platform-dependent
configuration files on some hosts. Lv Zheng.
The current C library configuration options appear below. For any issues,
it may be helpful to examine the existing compiler-dependent and
platform-dependent files as examples. Lv Zheng.
1) Linux kernel:
ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
library.
ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
2) Unix/Windows/BSD applications:
ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
library.
ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
3) UEFI applications:
ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
library.
ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
4) UEFI applications (EDK2/StdLib):
ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
AML interpreter: "module-level code" support. Allows for execution of so-
called "executable" AML code (math/logical operations, etc.) outside of
control methods not just at the module level (top level) but also within
any scope declared outside of a control method - Scope{}, Device{},
Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
Simplified the configuration of the "maximum AML loops" global option by
adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
modified at runtime.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Add full support for the RASF ACPI table (RAS Features Table).
Includes disassembler, data table compiler, and header support.
iASL Expand "module-level code" support. Allows for
compilation/disassembly of so-called "executable" AML code (math/logical
operations, etc.) outside of control methods not just at the module level
(top level) but also within any scope declared outside of a control
method - Scope{}, Device{}, Processor{}, PowerResource{}, and
ThermalZone{}.
AcpiDump: Added support for dumping all SSDTs on newer versions of
Windows. These tables are now easily available -- SSDTs are not available
through the registry on older versions.
Sync with HEAD
22 April 2016. Summary of changes for version 20160422:
1) ACPICA kernel-resident subsystem:
Fixed a regression in the GAS (generic address structure) arbitrary bit
support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
and incorrect return values. Lv Zheng. ACPICA BZ 1270.
ACPI 6.0: Added support for new/renamed resource macros. One new argument
was added to each of these macros, and the original name has been
deprecated. The AML disassembler will always disassemble to the new
names. Support for the new macros was added to iASL, disassembler,
resource manager, and the acpihelp utility. ACPICA BZ 1274.
I2cSerialBus -> I2cSerialBusV2
SpiSerialBus -> SpiSerialBusV2
UartSerialBus -> UartSerialBusV2
ACPI 6.0: Added support for a new integer field that was appended to the
package object returned by the _BIX method. This adds iASL compile-time
and AML runtime error checking. ACPICA BZ 1273.
ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
Subspace Type2" (Headers, Disassembler, and data table compiler).
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
Previous Release:
Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Implemented an ASL grammar extension to allow/enable executable
"module-level code" to be created and executed under the various
operators that create new scopes. This type of AML code is already
supported in all known AML interpreters, and the grammar change will
appear in the next version of the ACPI specification. Simplifies the
conditional runtime creation of named objects under these object types:
Device
PowerResource
Processor
Scope
ThermalZone
iASL: Implemented a new ASL extension, a "For" loop macro to add greater
ease-of-use to the ASL language. The syntax is similar to the
corresponding C operator, and is implemented with the existing AML While
opcode -- thus requiring no changes to existing AML interpreters.
For (Initialize, Predicate, Update) {TermList}
Grammar:
ForTerm :=
For (
Initializer // Nothing | TermArg => ComputationalData
Predicate // Nothing | TermArg => ComputationalData
Update // Nothing | TermArg => ComputationalData
) {TermList}
iASL: The _HID/_ADR detection and validation has been enhanced to search
under conditionals in order to allow these objects to be conditionally
created at runtime.
iASL: Fixed several issues with the constant folding feature. The
improvement allows better detection and resolution of statements that can
be folded at compile time. ACPICA BZ 1266.
iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
conversion to the ASL ElseIf operator where incorrect ASL code could be
generated.
iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
sometimes an extra (and extraneous) set of parentheses were emitted for
some combinations of operators. Although this did not cause any problems
with recompilation of the disassembled code, it made the code more
difficult to read. David Box. ACPICA BZ 1231.
iASL: Changed to ignore the unreferenced detection for predefined names
of resource descriptor elements, when the resource descriptor is
created/defined within a control method.
iASL: Disassembler: Fix a possible fault with externally declared Buffer
objects.
----------------------------------------
18 March 2016. Summary of changes for version 20160318:
1) ACPICA kernel-resident subsystem:
Added support for arbitrary bit lengths and bit offsets for registers
defined by the Generic Address Structure. Previously, only aligned bit
lengths of 8/16/32/64 were supported. This was sufficient for many years,
but recently some machines have been seen that require arbitrary bit-
level support. ACPICA BZ 1240. Lv Zheng.
Fixed an issue where the \_SB._INI method sometimes must be evaluated
before any _REG methods are evaluated. Lv Zheng.
Implemented several changes related to ACPI table support
(Headers/Disassembler/TableCompiler):
NFIT: For ACPI 6.1, updated to add some additional new fields and
constants.
FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
6).
DMAR: Added new constants per the 10/2014 DMAR spec.
IORT: Added new subtable per the 10/2015 IORT spec.
HEST: For ACPI 6.1, added new constants and new subtable.
DBG2: Added new constants per the 12/2015 DBG2 spec.
FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
ACPICA BZ 1249.
ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
Updated header support for the DMAR table to match the current version of
the related spec.
Added extensions to the ASL Concatenate operator to allow any ACPI object
to be passed as an operand. Any object other than Integer/String/Buffer
simply returns a string containing the object type. This extends the
usefulness of the Printf macros. Previously, Concatenate would abort the
control method if a non-data object was encountered.
ACPICA source code: Deployed the C "const" keyword across the source code
where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
Previous Release:
Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
2) iASL Compiler/Disassembler and Tools:
iASL/Disassembler: Improved the heuristic used to determine the number of
arguments for an externally defined control method (a method in another
table). Although this is an improvement, there is no deterministic way to
"guess" the number of method arguments. Only the ACPI 6.0 External opcode
will completely solve this problem as it is deployed (automatically) in
newer BIOS code.
iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
statements that could cause errors when the disassembled file is
compiled. ACPICA BZ 1243. David Box.
iASL: Fixed a regression caused by the merger of the two versions of the
local strtoul64. Because of a dependency on a global variable, strtoul64
could return an error for integers greater than a 32-bit value. ACPICA BZ
1260.
iASL: Fixed a regression where a fault could occur for an ASL Return
statement if it invokes a control method that is not resolved. ACPICA BZ
1264.
AcpiXtract: Improved input file validation: detection of binary files and
non-acpidump text files.
----------------------------------------
12 February 2016. Summary of changes for version 20160212:
1) ACPICA kernel-resident subsystem:
Implemented full support for the ACPI 6.1 specification (released in
January). This version of the specification is available at:
http://www.uefi.org/specifications
Only a relatively small number of changes were required in ACPICA to
support ACPI 6.1, in these areas:
- New predefined names
- New _HID values
- A new subtable for HEST
- A few other header changes for new values
Ensure \_SB_._INI is executed before any _REG methods are executed. There
appears to be existing BIOS code that relies on this behavior. Lv Zheng.
Reverted a change made in version 20151218 which enabled method
invocations to be targets of various ASL operators (SuperName and Target
grammar elements). While the new behavior is supported by the ACPI
specification, other AML interpreters do not support this behavior and
never will. The ACPI specification will be updated for ACPI 6.2 to remove
this support. Therefore, the change was reverted to the original ACPICA
behavior.
ACPICA now supports the GCC 6 compiler.
Current Release: (Note: build changes increased sizes)
Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
Previous Release:
Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
2) iASL Compiler/Disassembler and Tools:
Completed full support for the ACPI 6.0 External() AML opcode. The
compiler emits an external AML opcode for each ASL External statement.
This opcode is used by the disassembler to assist with the disassembly of
external control methods by specifying the required number of arguments
for the method. AML interpreters do not use this opcode. To ensure that
interpreters do not even see the opcode, a block of one or more external
opcodes is surrounded by an "If(0)" construct. As this feature becomes
commonly deployed in BIOS code, the ability of disassemblers to correctly
disassemble AML code will be greatly improved. David Box.
iASL: Implemented support for an optional cross-reference output file.
The -lx option will create a the cross-reference file with the suffix
"xrf". Three different types of cross-reference are created in this file:
- List of object references made from within each control method
- Invocation (caller) list for each user-defined control method
- List of references to each non-method object in the namespace
iASL: Method invocations as ASL Target operands are now disallowed and
flagged as errors in preparation for ACPI 6.2 (see the description of the
problem above).
Sync with HEAD
import new acpica:
----------------------------------------
8 January 2016. Summary of changes for version 20160108:
1) ACPICA kernel-resident subsystem:
Updated all ACPICA copyrights and signons to 2016: Added the 2016
copyright to all source code module headers and utility/tool signons.
This includes the standard Linux dual-license header. This affects
virtually every file in the ACPICA core subsystem, iASL compiler, all
ACPICA utilities, and the ACPICA test suite.
Fixed a regression introduced in version 20151218 concerning the
execution of so-called module-level ASL/AML code. Namespace objects
created under a module-level If() construct were not properly/fully
entered into the namespace and could cause an interpreter fault when
accessed.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
Previous Release:
Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
2) iASL Compiler/Disassembler and Tools:
Fixed a problem with the compilation of the GpioIo and GpioInt resource
descriptors. The _PIN field name was incorrectly defined to be an array
of 32-bit values, but the _PIN values are in fact 16 bits each. This
would cause incorrect bit width warnings when using Word (16-bit) fields
to access the descriptors.
----------------------------------------
18 December 2015. Summary of changes for version 20151218:
1) ACPICA kernel-resident subsystem:
Implemented per-AML-table execution of "module-level code" as individual
ACPI tables are loaded into the namespace during ACPICA initialization.
In other words, any module-level code within an AML table is executed
immediately after the table is loaded, instead of batched and executed
after all of the tables have been loaded. This provides compatibility
with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
David Box.
To fully support the feature above, the default operation region handlers
for the SystemMemory, SystemIO, and PCI_Config address spaces are now
installed before any ACPI tables are loaded. This enables module-level
code to access these address spaces during the table load and module-
level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
Box.
Implemented several changes to the internal _REG support in conjunction
with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
utilities for the changes above. Although these tools were changed, host
operating systems that simply use the default handlers for SystemMemory,
SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
For example, in the code below, DEV1 is conditionally added to the
namespace by the DSDT via module-level code that accesses an operation
region. The SSDT references DEV1 via the Scope operator. DEV1 must be
created immediately after the DSDT is loaded in order for the SSDT to
successfully reference DEV1. Previously, this code would cause an
AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
fully supported by ACPICA.
DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
{
OperationRegion (OPR1, SystemMemory, 0x400, 32)
Field (OPR1, AnyAcc, NoLock, Preserve)
{
FLD1, 1
}
If (FLD1)
{
Device (\DEV1)
{
}
}
}
DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
{
External (\DEV1, DeviceObj)
Scope (\DEV1)
{
}
}
Fixed an AML interpreter problem where control method invocations were
not handled correctly when the invocation was itself a SuperName argument
to another ASL operator. In these cases, the method was not invoked.
ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
argument:
Store
Acquire, Wait
CondRefOf, RefOf
Decrement, Increment
Load, Unload
Notify
Signal, Release, Reset
SizeOf
Implemented automatic String-to-ObjectReference conversion support for
packages returned by predefined names (such as _DEP). A common BIOS error
is to add double quotes around an ObjectReference namepath, which turns
the reference into an unexpected string object. This support detects the
problem and corrects it before the package is returned to the caller that
invoked the method. Lv Zheng.
Implemented extensions to the Concatenate operator. Concatenate now
accepts any type of object, it is not restricted to simply
Integer/String/Buffer. For objects other than these 3 basic data types,
the argument is treated as a string containing the name of the object
type. This expands the utility of Concatenate and the Printf/Fprintf
macros. ACPICA BZ 1222.
Cleaned up the output of the ASL Debug object. The timer() value is now
optional and no longer emitted by default. Also, the basic data types of
Integer/String/Buffer are simply emitted as their values, without a data
type string -- since the data type is obvious from the output. ACPICA BZ
1221.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
Previous Release:
Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Fixed some issues with the ASL Include() operator. This operator
was incorrectly defined in the iASL parser rules, causing a new scope to
be opened for the code within the include file. This could lead to
several issues, including allowing ASL code that is technically illegal
and not supported by AML interpreters. Note, this does not affect the
related #include preprocessor operator. ACPICA BZ 1212.
iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
operator is essentially an ASL macro since there is no AML opcode
associated with it. The code emitted by the iASL compiler for ElseIf is
an Else opcode followed immediately by an If opcode. The disassembler
will now emit an ElseIf if it finds an Else immediately followed by an
If. This simplifies the decoded ASL, especially for deeply nested
If..Else and large Switch constructs. Thus, the disassembled code more
closely follows the original source ASL. ACPICA BZ 1211. Example:
Old disassembly:
Else
{
If (Arg0 == 0x02)
{
Local0 = 0x05
}
}
New disassembly:
ElseIf (Arg0 == 0x02)
{
Local0 = 0x05
}
AcpiExec: Added support for the new module level code behavior and the
early region installation. This required a small change to the
initialization, since AcpiExec must install its own operation region
handlers.
AcpiExec: Added support to make the debug object timer optional. Default
is timer disabled. This cleans up the debug object output -- the timer
data is rarely used.
AcpiExec: Multiple ACPI tables are now loaded in the order that they
appear on the command line. This can be important when there are
interdependencies/references between the tables.
iASL/Templates. Add support to generate template files with multiple
SSDTs within a single output file. Also added ommand line support to
specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1223, 1225.
----------------------------------------
24 November 2015. Summary of changes for version 20151124:
1) ACPICA kernel-resident subsystem:
Fixed a possible regression for a previous update to FADT handling. The
FADT no longer has a fixed table ID, causing some issues with code that
was hardwired to a specific ID. Lv Zheng.
Fixed a problem where the method auto-serialization could interfere with
the current SyncLevel. This change makes the auto-serialization support
transparent to the SyncLevel support and management.
Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
interface is intended for early access to the namespace during the
initial namespace device discovery walk. The _SUB method has been seen to
access operation regions in some cases, causing errors because the
operation regions are not fully initialized.
AML Debugger: Fixed some issues with the terminate/quit/exit commands
that can cause faults. Lv Zheng.
AML Debugger: Add thread ID support so that single-step mode only applies
to the AML Debugger thread. This prevents runtime errors within some
kernels. Lv Zheng.
Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
methods that are invoked by this interface are optional, removed warnings
emitted for the case where one or more of these methods do not exist.
ACPICA BZ 1208, original change by Prarit Bhargava.
Made a major pass through the entire ACPICA source code base to
standardize formatting that has diverged a bit over time. There are no
functional changes, but this will of course cause quite a few code
differences from the previous ACPICA release.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
Previous Release:
Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
2) iASL Compiler/Disassembler and Tools:
iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
definition blocks within a single ASL file and the resulting AML file.
Support for this type of file was also added to the various tools that
use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
example code below shows two definition blocks within the same file:
DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
0x12345678)
{
}
DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
{
}
iASL: Enhanced typechecking for the Name() operator. All expressions for
the value of the named object must be reduced/folded to a single constant
at compile time, as per the ACPI specification (the AML definition of
Name()).
iASL: Fixed some code indentation issues for the -ic and -ia options (C
and assembly headers). Now all emitted code correctly begins in column 1.
iASL: Added an error message for an attempt to open a Scope() on an
object defined in an SSDT. The DSDT is always loaded into the namespace
first, so any attempt to open a Scope on an SSDT object will fail at
runtime.
----------------------------------------
30 September 2015. Summary of changes for version 20150930:
1) ACPICA kernel-resident subsystem:
Debugger: Implemented several changes and bug fixes to assist support for
the in-kernel version of the AML debugger. Lv Zheng.
- Fix the "predefined" command for in-kernel debugger.
- Do not enter debug command loop for the help and version commands.
- Disallow "execute" command during execution/single-step of a method.
Interpreter: Updated runtime typechecking for all operators that have
target operands. The operand is resolved and validated that it is legal.
For example, the target cannot be a non-data object such as a Device,
Mutex, ThermalZone, etc., as per the ACPI specification.
Debugger: Fixed the double-mutex user I/O handshake to work when local
deadlock detection is enabled.
Debugger: limited display of method locals and arguments (LocalX and
ArgX) to only those that have actually been initialized. This prevents
lines of extraneous output.
Updated the definition of the NFIT table to correct the bit polarity of
one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
Previous Release:
Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Improved the compile-time typechecking for operands of many of the
ASL operators:
-- Added an option to disable compiler operand/operator typechecking (-
ot).
-- For the following operators, the TermArg operands are now validated
when possible to be Integer data objects: BankField, OperationRegion,
DataTableRegion, Buffer, and Package.
-- Store (Source, Target): Both the source and target operands are
resolved and checked that the operands are both legal. For example,
neither operand can be a non-data object such as a Device, Mutex,
ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
operator can be used to store an object to any type of target object.
-- Store (Source, Target): If the source is a Package object, the target
must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
is a Package, the source must also be a Package.
-- Store (Source, Target): A warning is issued if the source and target
resolve to the identical named object.
-- Store (Source, <method invocation>): An error is generated for the
target method invocation, as this construct is not supported by the AML
interpreter.
-- For all ASL math and logic operators, the target operand must be a
data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
includes the function return value also.
-- External declarations are also included in the typechecking where
possible. External objects defined using the UnknownObj keyword cannot be
typechecked, however.
iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
operator:
- Legacy code: Index(PKG1, 3)
- New ASL+ code: PKG1[3]
This completes the ACPI 6.0 ASL+ support as it was the only operator not
supported.
iASL: Fixed the file suffix for the preprocessor output file (.i). Two
spaces were inadvertently appended to the filename, causing file access
and deletion problems on some systems.
ASL Test Suite (ASLTS): Updated the master makefile to generate all
possible compiler output files when building the test suite -- thus
exercising these features of the compiler. These files are automatically
deleted when the test suite exits.
----------------------------------------
18 August 2015. Summary of changes for version 20150818:
1) ACPICA kernel-resident subsystem:
Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
Zheng. ACPICA BZ 1186.
Completed development to ensure that the ACPICA Disassembler and Debugger
are fully standalone components of ACPICA. Removed cross-component
dependences. Lv Zheng.
The max-number-of-AML-loops is now runtime configurable (previously was
compile-time only). This is essentially a loop timeout to force-abort
infinite AML loops. ACPCIA BZ 1192.
Debugger: Cleanup output to dump ACPI names and namepaths without any
trailing underscores. Lv Zheng. ACPICA BZ 1135.
Removed unnecessary conditional compilations across the Debugger and
Disassembler components where entire modules could be left uncompiled.
The aapits test is deprecated and has been removed from the ACPICA git
tree. The test has never been completed and has not been maintained, thus
becoming rather useless. ACPICA BZ 1015, 794.
A batch of small changes to close bugzilla and other reports:
- Remove duplicate code for _PLD processing. ACPICA BZ 1176.
- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
- iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
- ACPI table support: general cleanup and simplification. Lv Zheng, Bob
Moore.
- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
ACPICA BZ 1184.
- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
operators.
- Debugger: Split debugger initialization/termination interfaces. Lv
Zheng.
- AcpiExec: Emit OemTableId for SSDTs during the load phase for table
identification.
- AcpiExec: Add debug message during _REG method phase during table
load/init.
- AcpiNames: Fix a regression where some output was missing and no longer
emitted.
- Debugger: General cleanup and simplification. Lv Zheng.
- Disassembler: Cleanup use of several global option variables. Lv Zheng.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
Previous Release:
Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
2) iASL Compiler/Disassembler and Tools:
AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
were not handled properly and caused load errors. Now, properly invoke
and use the ACPICA auto-reallocate mechanism for ACPI table data
structures. ACPICA BZ 1188
AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
BZ 1190.
AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
executed during initialization. ACPICA BZ 1187, 1189.
iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
that corresponds to each disassembled ASL statement, to simplify
debugging. ACPICA BZ 1191.
Debugger: Add option to the "objects" command to display a summary of the
current namespace objects (Object type and count). This is displayed if
the command is entered with no arguments.
AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
----------------------------------------
Sync with HEAD
file utnonansi.c was added on branch nick-nhusb on 2015-09-22 12:06:05 +0000
----------------------------------------
17 July 2015. Summary of changes for version 20150717:
1) ACPICA kernel-resident subsystem:
Improved the partitioning between the Debugger and Disassembler
components. This allows the Debugger to be used standalone within kernel
code without the Disassembler (which is used for single stepping also).
This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
Debugger: Implemented a new command to trace the execution of control
methods (Trace). This is especially useful for the in-kernel version of
the debugger when file I/O may not be available for method trace output.
See the ACPICA reference for more information. Lv Zheng.
Moved all C library prototypes (used for the local versions of these
functions when requested) to a new header, acclib.h
Cleaned up the use of non-ANSI C library functions. These functions are
implemented locally in ACPICA. Moved all such functions to a common
source file, utnonansi.c
Debugger: Fixed a problem with the "!!" command (get last command
executed) where the debugger could enter an infinite loop and eventually
crash.
Removed the use of local macros that were used for some of the standard C
library functions to automatically cast input parameters. This mostly
affected the is* functions where the input parameter is defined to be an
int. This required a few modifications to the main ACPICA source code to
provide casting for these functions and eliminate possible compiler
warnings for these parameters.
Across the source code, added additional status/error checking to resolve
issues discovered by static source code analysis tools such as Coverity.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
Previous Release:
Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Fixed a regression where the device map file feature no longer
worked properly when used in conjunction with the disassembler. It only
worked properly with the compiler itself.
iASL: Implemented a new warning for method LocalX variables that are set
but never used (similar to a C compiler such as gcc). This also applies
to ArgX variables that are not defined by the parent method, and are
instead (legally) used as local variables.
iASL/Preprocessor: Finished the pass-through of line numbers from the
preprocessor to the compiler. This ensures that compiler errors/warnings
have the correct original line numbers and filenames, regardless of any
#include files.
iASL/Preprocessor: Fixed a couple of issues with comment handling and the
pass-through of comments to the preprocessor output file (which becomes
the compiler input file). Also fixed a problem with // comments that
appear after a math expression.
iASL: Added support for the TCPA server table to the table compiler and
template generator. (The client table was already previously supported)
iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
identify the iASL compiler.
Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
multiple times. The new names are ACPI_SIGN_NEGATIVE and
ACPI_SIGN_POSITIVE.
AcpiHelp: Update to expand help messages for the iASL preprocessor
directives.
----------------------------------------
19 June 2015. Summary of changes for version 20150619:
Two regressions in version 20150616 have been addressed:
Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
etc.) This update changes ACPICA to only use the standard headers for
functions, or the prototypes for the local versions of the C library
functions. Across the source code, this required some additional casts
for some Clib invocations for portability. Moved all local prototypes to
a new file, acclib.h
Fixes several problems with recent changes to the handling of the FACS
table that could cause some systems not to boot.
----------------------------------------
16 June 2015. Summary of changes for version 20150616:
1) ACPICA kernel-resident subsystem:
Across the entire ACPICA source code base, the various macros for the C
library functions (such as ACPI_STRLEN, etc.) have been removed and
replaced by the standard C library names (strlen, etc.) The original
purpose for these macros is no longer applicable. This simplification
reduces the number of macros used in the ACPICA source code
significantly, improving readability and maintainability.
Implemented support for a new ACPI table, the OSDT. This table, the
"override" SDT, can be loaded directly by the host OS at boot time. It
enables the replacement of existing namespace objects that were installed
via the DSDT and/or SSDTs. The primary purpose for this is to replace
buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
Moore.
Added support for systems with (improperly) two FACS tables -- a "32-bit"
table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
X field). This change will support both automatically. There continues to
be systems found with this issue. This support requires a change to the
AcpiSetFirmwareWakingVector interface. Also, a public global variable has
been added to allow the host to select which FACS is desired
(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
details Lv Zheng.
Added a new feature to allow for systems that do not contain an FACS.
Although this is already supported on hardware-reduced platforms, the
feature has been extended for all platforms. The reasoning is that we do
not want to abort the entire ACPICA initialization just because the
system is seriously buggy and has no FACS.
Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
not correctly transcribed from the ACPI specification in ACPICA version
20150515.
Implemented support for the _CLS object in the AcpiGetObjectInfo external
interface.
Updated the definitions of the TCPA and TPM2 ACPI tables to the more
recent TCG ACPI Specification, December 14, 2014. Table disassembler and
compiler also updated. Note: The TCPA "server" table is not supported by
the disassembler/table-compiler at this time.
ACPI 6.0: Added definitions for the new GIC version field in the MADT.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
Previous Release:
Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Fixed a problem with the new symbolic operator disassembler
where incorrect ASL code could be emitted in some cases for the "non-
commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
ShiftRight. The actual problem cases seem to be rather unusual in common
ASL code, however. David Box.
Modified the linux version of acpidump to obtain ACPI tables from not
just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
Zheng.
iASL: Fixed a problem where the user preprocessor output file (.i)
contained extra data that was not expected. The compiler was using this
file as a temporary file and passed through #line directives in order to
keep compiler error messages in sync with the input file and line number
across multiple include files. The (.i) is no longer a temporary file as
the compiler uses a new, different file for the original purpose.
iASL: Fixed a problem where comments within the original ASL source code
file were not passed through to the preprocessor output file, nor any
listing files.
iASL: Fixed some issues for the handling of the "#include" preprocessor
directive and the similar (but not the same) "Include" ASL operator.
iASL: Add support for the new OSDT in both the disassembler and compiler.
iASL: Fixed a problem with the constant folding support where a Buffer
object could be incorrectly generated (incorrectly formed) during a
conversion to a Store() operator.
AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
description text for the _REV predefined name. _REV now permanently
returns 2, as per the ACPI 6.0 specification.
Debugger: Enhanced the output of the Debug ASL object for references
produced by the Index operator. For Buffers and strings, only output the
actual byte pointed to by the index. For packages, only print the single
package element decoded by the index. Previously, the entire
buffer/string/package was emitted.
iASL/Table-compiler: Fixed a regression where the "generic" data types
were no longer recognized, causing errors.
----------------------------------------
15 May 2015. Summary of changes for version 20150515:
This release implements most of ACPI 6.0 as described below.
1) ACPICA kernel-resident subsystem:
Implemented runtime argument checking and return value checking for all
new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
_MTL, _PRR, _RDI, _RST, _TFP, _TSN.
Example Code and Data Size: These are the sizes for the OS-independent
acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
debug version of the code includes the debug output trace mechanism and
has a much larger code and data size.
Current Release:
Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
Previous Release:
Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2) iASL Compiler/Disassembler and Tools:
iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
names (argument count validation and return value typechecking.)
iASL disassembler and table compiler: implemented support for all new
ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
tables: FADT, MADT.
iASL preprocessor: Added a new directive to enable inclusion of binary
blobs into ASL code. The new directive is #includebuffer. It takes a
binary file as input and emits a named ascii buffer object into the ASL
code.
AcpiHelp: Added support for all new ACPI 6.0 predefined names.
AcpiHelp: Added a new option, -d, to display all iASL preprocessor
directives.
AcpiHelp: Added a new option, -t, to display all known/supported ACPI
tables.
Initial revision