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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.
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.
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.
Mostly merge changes from HEAD upto 20200411
Merge changes from current as of 20200406
---------------------------------------- 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.)
----------------------------------------
13 December 2019. Summary of changes for version 20191213:
1) ACPICA kernel-resident subsystem:
Return a Buffer object for all fields created via the CreateField operator. Previously, an Integer would be returned if the size of the field was less than or equal to the current size of an Integer. Although this goes against the ACPI specification, it provides compatibility with other ACPI implementations. Also updated the ASLTS test suite to reflect this new behavior.
2) iASL Compiler/Disassembler and ACPICA tools:
iASL: Implemented detection of (and throw an error for) duplicate values for Case statements within a single Switch statement. Duplicate Integers, Strings, and Buffers are supported.
iASL: Fix error logging issue during multiple file compilation -- Switch to the correct input file during error node creation.
iASL: For duplicate named object creation, now emit an error instead of a warning - since this will cause a runtime error.
AcpiSrc: Add unix line-ending support for non-Windows builds.
iASL: Add an error condition for an attempt to create a NameString with > 255 NameSegs (the max allowable via the AML definition).
----------------------------------------
18 October 2019. Summary of changes for version 20191018:
1) ACPICA kernel-resident subsystem:
Debugger: added a new command: ?Fields [address space ID]?. This command
dumps the contents of all field units that are defined within the
namespace with a particular address space ID.
Modified the external interface AcpiLoadTable() to return a table index.
This table index can be used for unloading a table for debugging.
ACPI_STATUS
AcpiLoadTable (
ACPI_TABLE_HEADER *Table,
UINT32 *TableIndex))
Implemented a new external interface: AcpiUnloadTable() This new function
takes a table index as an argument and unloads the table. Useful for
debugging only.
ACPI_STATUS
AcpiUnloadTable (
UINT32 TableIndex))
Ported the AcpiNames utility to use the new table initialization
sequence. The utility was broken before this change. Also, it was
required to include most of the AML interpreter into the utility in order
to process table initialization (module-level code execution.)
Update for results from running Clang V8.0.1. This fixes all "dead
assignment" warnings. There are still several "Dereference of NULL
pointer" warnings, but these have been found to be false positive
warnings.
2) iASL Compiler/Disassembler and ACPICA tools:
iASL: numerous table compiler changes to ensure that the usage of
yacc/bison syntax is POSIX-compliant.
iASL/disassembler: several simple bug fixes in the data table
disassembler.
Acpiexec: expanded the initialization file (the -fi option) to initialize
strings, buffers, packages, and field units.
---------------------------------------- 16 August 2019. Summary of changes for version 20190816: This release is available at https://acpica.org/downloads 1) ACPICA kernel-resident subsystem: Modified the OwnerId mechanism to allow for more Owner Ids. The previous limit was 256 Ids, now it is 4096 Ids. This prevents OWNER_ID_LIMIT exceptions on machines with a large number of initialization threads, many CPU cores and nested initialization control methods. Introduced acpi_dispatch_gpe() as a wrapper around AcpiEvDetectGpe() for checking if the given GPE (as represented by a GPE device handle and a GPE number) is currently active and dispatching it (if that's the case) outside of interrupt context. Table load: exit the interpreter before initializing objects within the new table This prevents re-acquiring the interpreter lock when loading tables Added the "Windows 2019" string to the _OSI support (version 1903). Jung- uk Kim Macros: removed pointer math on a null pointer. Causes warnings on some compilers and/or tools. Changed ACPI_TO_POINTER to use ACPI_CAST_PTR instead of using arithmetic. Fully deployed the ACPI_PRINTF_LIKE macro. This macro was not being used across all "printf-like" internal functions. Also, cleanup all calls to such functions (both in 32-bit mode and 64-bit mode) now that they are analyzed by the gcc compiler via ACPI_PRINTF_LIKE. 2) iASL Compiler/Disassembler and ACPICA tools: iASL: implemented a new data table compiler flex/bison front-end. This change is internal and is not intended to result in changes to the compiled code. This new compiler front-end can be invoked using the -tp option for now, until the old mechanism is removed. ASLTS: Implemented a new data table compiler test suite. This test suite generates all table templates and compile/disassemble/re-compile/binary- compare each file. iASL: return -1 if AML files were not generated due to compiler errors iASL: added a warning on use of the now-legacy ASL Processor () keyword. iASL: added an error on _UID object declaration that returns a String within a Processor () declaration. A _UID for a processor must be an Integer. iASL: added a null terminator to name strings that consist only of multiple parent prefixes (^) iASL: added support to compile both ASL and data table files in a single command. Updated the tool generation project files that were recently migrated to MSVC 2017 to eliminate all new warnings. The new project files appear in the directory \acpica\generate\msvc2017. This change effectively deprecates the older project files in \acpica\generate\msvc9.
Sync with HEAD
----------------------------------------
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 a couple of conflicts (result of the uimin/uimax changes)
----------------------------------------
10 August 2018. Summary of changes for version 20180810:
1) ACPICA kernel-resident subsystem:
Initial ACPI table loading: Attempt to continue loading ACPI tables
regardless of malformed AML. Since migrating table initialization to the
new module-level code support, the AML interpreter rejected tables upon
any ACPI error encountered during table load. This is a problem because
non-serious ACPI errors during table load do not necessarily mean that
the entire definition block (DSDT or SSDT) is invalid. This change
improves the table loading by ignoring some types of errors that can be
generated by incorrect AML. This can range from object type errors, scope
errors, and index errors.
Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs
during suspend/resume. The status of ACPI events is no longer cleared
when entering the ACPI S5 system state (power off) which caused some
systems to power up immediately after turning off power in certain
situations. This was a functional regression. It was fixed by clearing
the status of all ACPI events again when entering S5 (for system-wide
suspend or hibernation the clearing of the status of all events is not
desirable, as it might cause the kernel to miss wakeup events sometimes).
Rafael Wysocki.
2) iASL Compiler/Disassembler and Tools:
AcpiExec: Enhanced the -fi option (Namespace initialization file). Field
elements listed in the initialization file were previously initialized
after the table load and before executing module-level code blocks.
Recent changes in the module-level code support means that the table load
becomes a large control method execution. If fields are used within
module-level code and we are executing with the -fi option, the
initialization values were used to initialize the namespace object(s)
only after the table was finished loading. This change Provides an early
initialization of objects specified in the initialization file so that
field unit values are populated during the table load (not after the
load).
AcpiExec: Fixed a small memory leak regression that could result in
warnings during exit of the utility. These warnings were similar to
these:
0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small]
0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001
----------------------------------------
29 June 2018. Summary of changes for version 20180629:
1) iASL Compiler/Disassembler and Tools:
iASL: Fixed a regression related to the use of the ASL External
statement. Error checking for the use of the External() statement has
been relaxed. Previously, a restriction on the use of External meant that
the referenced named object was required to be defined in a different
table (an SSDT). Thus it would be an error to declare an object as an
external and then define the same named object in the same table. For
example:
DefinitionBlock (...)
{
External (DEV1)
Device (DEV1){...} // This was an error
}
However, this behavior has caused regressions in some existing ASL code,
because there is code that depends on named objects and externals (with
the same name) being declared in the same table. This change will allow
the ASL code above to compile without errors or warnings.
iASL: Implemented ASL language extensions for four operators to make some
of their arguments optional instead of required:
1) Field (RegionName, AccessType, LockRule, UpdateRule)
2) BankField (RegionName, BankName, BankValue,
AccessType, LockRule, UpdateRule)
3) IndexField (IndexName, DataName,
AccessType, LockRule, UpdateRule)
For the Field operators above, the AccessType, LockRule, and UpdateRule
are now optional arguments. The default values are:
AccessType: AnyAcc
LockRule: NoLock
UpdateRule: Preserve
4) Mutex (MutexName, SyncLevel)
For this operator, the SyncLevel argument is now optional. This argument
is rarely used in any meaningful way by ASL code, and thus it makes sense
to make it optional. The default value is:
SyncLevel: 0
iASL: Attempted use of the ASL Unload() operator now results in the
following warning:
"Unload is not supported by all operating systems"
This is in fact very true, and the Unload operator may be completely
deprecated in the near future.
AcpiExec: Fixed a regression for the -fi option (Namespace initialization
file. Recent changes in the ACPICA module-level code support altered the
table load/initialization sequence . This means that the table load has
become a large method execution of the table itself. If Operation Region
Fields are used within any module-level code and the -fi option was
specified, the initialization values were populated only after the table
had completely finished loading (and thus the module-level code had
already been executed). This change moves the initialization of objects
listed in the initialization file to before the table is executed as a
method. Field unit values are now initialized before the table execution
is performed.
----------------------------------------
31 May 2018. Summary of changes for version 20180531:
1) ACPICA kernel-resident Subsystem:
Implemented additional support to help ensure that a DSDT or SSDT is
fully loaded even if errors are incurred during the load. The majority of
the problems that are seen is the failure of individual AML operators
that occur during execution of any module-level code (MLC) existing in
the table. This support adds a mechanism to abort the current ASL
statement (AML opcode), emit an error message, and to simply move on to
the next opcode -- instead of aborting the entire table load. This is
different than the execution of a control method where the entire method
is aborted upon any error. The goal is to perform a very "best effort" to
load the ACPI tables. The most common MLC errors that have been seen in
the field are direct references to unresolved ASL/AML symbols (referenced
directly without the use of the CondRefOf operator to validate the
symbol). This new ACPICA behavior is now compatible with other ACPI
implementations.
Interpreter: The Unload AML operator is no longer supported for the
reasons below. An AE_NOT_IMPLEMENTED exception is returned.
1) A correct implementation on at least some hosts may not be possible.
2) Other ACPI implementations do not correctly/fully support it.
3) It requires host device driver support which is not known to exist.
(To properly support namespace unload out from underneath.)
4) This AML operator has never been seen in the field.
Parser: Added a debug option to dump AML parse sub-trees as they are
being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is
ACPI_DB_PARSE_TREES.
Debugger: Reduced the verbosity for errors incurred during table load and
module-level code execution.
Completed an investigation into adding a namespace node "owner list"
instead of the current "owner ID" associated with namespace nodes. This
list would link together all nodes that are owned by an individual
control method. The purpose would be to enhance control method execution
by speeding up cleanup during method exit (all namespace nodes created by
a method are deleted upon method termination.) Currently, the entire
namespace must be searched for matching owner IDs if (and only if) the
method creates named objects outside of the local scope. However, by far
the most common case is that methods create objects locally, not outside
the method scope. There is already an ACPICA optimization in place that
only searches the entire namespace in the rare case of a method creating
objects elsewhere in the namespace. Therefore, it is felt that the
overhead of adding an additional pointer to each namespace node to
implement the owner list makes this feature unnecessary.
2) iASL Compiler/Disassembler and Tools:
iASL, Disassembler, and Template generator: Implemented support for
Revision D of the IORT table. Adds a new subtable that is used to specify
SMMUv3 PMCGs. rmurphy-arm.
Disassembler: Restored correct table header validation for the "special"
ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI
table header and must be special-cased. This was a regression that has
been present for apparently a long time.
AcpiExec: Reduced verbosity of the local exception handler implemented
within acpiexec. This handler is invoked by ACPICA upon any exceptions
generated during control method execution. A new option was added: -vh
restores the original verbosity level if desired.
AcpiExec: Changed the default base from decimal to hex for the -x option
(set debug level). This simplifies the use of this option and matches the
behavior of the corresponding iASL -x option.
AcpiExec: Restored a force-exit on multiple control-c (sigint)
interrupts. This allows program termination even if other issues cause
the control-c to fail.
ASL test suite (ASLTS): Added tests for the recently implemented package
element resolution mechanism that allows forward references to named
objects from individual package elements (this mechanism provides
compatibility with other ACPI implementations.)
----------------------------------------
8 May 2018. Summary of changes for version 20180508:
1) ACPICA kernel-resident subsystem:
Completed the new (recently deployed) package resolution mechanism for
the Load and LoadTable ASL/AML operators. This fixes a regression that
was introduced in version 20180209 that could result in an
AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table
(SSDT) that contains package objects.
2) iASL Compiler/Disassembler and Tools:
AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than
1 MB. This change allows for table offsets within the acpidump file to be
up to 8 characters. These changes are backwards compatible with existing
acpidump files.
Sync with HEAD, resolve some conflicts
----------------------------------------
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
file dbobject.c was added on branch tls-maxphys on 2017-12-03 11:37:39 +0000
----------------------------------------
31 August 2017. Summary of changes for version 20170831:
1) ACPICA kernel-resident subsystem:
Implemented internal support for full 64-bit addresses that appear in all
Generic Address Structure (GAS) structures. Previously, only the lower 32
bits were used. Affects the use of GAS structures in the FADT and other
tables, as well as the GAS structures passed to the AcpiRead and
AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
Added header support for the PDTT ACPI table (Processor Debug Trigger
Table). Full support in the iASL Data Table Compiler and disassembler is
forthcoming.
2) iASL Compiler/Disassembler and Tools:
iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
Properties Topology Table) where a flag bit was specified in the wrong
bit position ("Line Size Valid", bit 6).
iASL: Implemented support for Octal integer constants as defined by the
ASL language grammar, per the ACPI specification. Any integer constant
that starts with a zero is an octal constant. For example,
Store (037777, Local0) /* Octal constant */
Store (0x3FFF, Local0) /* Hex equivalent */
Store (16383, Local0) /* Decimal equivalent */
iASL: Improved overflow detection for 64-bit string conversions during
compilation of integer constants. "Overflow" in this case means a string
that represents an integer that is too large to fit into a 64-bit value.
Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
the low-order 32 bits with a warning, as previously implemented. Several
new exceptions are defined that indicate a 64-bit overflow, as well as
the base (radix) that was used during the attempted conversion. Examples:
Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
iASL: Added a warning for the case where a ResourceTemplate is declared
with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
this case, the resulting template is created with a single END_TAG
descriptor, which is essentially useless.
iASL: Expanded the -vw option (ignore specific warnings/remarks) to
include compilation error codes as well.
----------------------------------------
28 July 2017. Summary of changes for version 20170728:
1) ACPICA kernel-resident subsystem:
Fixed a regression seen with small resource descriptors that could cause
an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
AML interpreter: Implemented a new feature that allows forward references
from individual named references within package objects that are
contained within blocks of "module-level code". This provides
compatibility with other ACPI implementations and supports existing
firmware that depends on this feature. Example:
Name (ABCD, 1)
If (ABCD) /* An If() at module-level */
{
Name (PKG1, Package()
{
INT1 /* Forward reference to object INT1
*/
})
Name (INT1, 0x1234)
}
AML Interpreter: Fixed a problem with the Alias() operator where aliases
to some ASL objects were not handled properly. Objects affected are:
Mutex, Event, and OperationRegion.
AML Debugger: Enhanced to properly handle AML Alias objects. These
objects have one level of indirection which was not fully supported by
the debugger.
Table Manager: Added support to detect and ignore duplicate SSDTs within
the XSDT/RSDT. This error in the XSDT has been seen in the field.
EFI and EDK2 support:
Enabled /WX flag for MSVC builds
Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
Added local support for 64-bit multiply and shift operations
Added support to compile acpidump.efi on Windows
Added OSL function stubs for interfaces not used under EFI
Added additional support for the _DMA predefined name. _DMA returns a
buffer containing a resource template. This change add support within the
resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2) iASL Compiler/Disassembler and Tools:
iASL: Fixed a problem where the internal input line buffer(s) could
overflow if there are very long lines in the input ASL source code file.
Implemented buffer management that automatically increases the size of
the buffers as necessary.
iASL: Added an option (-vx) to "expect" particular remarks, warnings and
errors. If the specified exception is not raised during compilation, the
compiler emits an error. This is intended to support the ASL test suite,
but may be useful in other contexts.
iASL: Implemented a new predefined macro, __METHOD__, which returns a
string containing the name of the current control method that is being
compiled.
iASL: Implemented debugger and table compiler support for the SDEI ACPI
table (Software Delegated Exception Interface). James Morse
<james.morse@arm.com>
Unix/Linux makefiles: Added an option to disable compile optimizations.
The disable occurs when the NOOPT flag is set to TRUE.
theracermaster@gmail.com
Acpidump: Added support for multiple DSDT and FACS tables. This can occur
when there are different tables for 32-bit versus 64-bit.
Enhanced error reporting for the ASL test suite (ASLTS) by removing
unnecessary/verbose text, and emit the actual line number where an error
has occurred. These changes are intended to improve the usefulness of the
test suite.
----------------------------------------
29 June 2017. Summary of changes for version 20170629:
1) ACPICA kernel-resident subsystem:
Tables: Implemented a deferred ACPI table verification. This is useful
for operating systems where the tables cannot be verified in the early
initialization stage due to early memory mapping limitations on some
architectures. Lv Zheng.
Tables: Removed the signature validation for dynamically loaded tables.
Provides compatibility with other ACPI implementations. Previously, only
SSDT tables were allowed, as per the ACPI specification. Now, any table
signature can be used via the Load() operator. Lv Zheng.
Tables: Fixed several mutex issues that could cause errors during table
acquisition. Lv Zheng.
Tables: Fixed a problem where an ACPI warning could be generated if a
null pointer was passed to the AcpiPutTable interface. Lv Zheng.
Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
AcpiPutTable interfaces. This applies to the "late stage" table loading
when the use of AcpiPutTable is no longer required (since the system
memory manager is fully running and available). Lv Zheng.
Fixed/Reverted a regression during processing of resource descriptors
that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
exception in this case.
Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
Interpreter: Fixed a possible fault if an Alias operator with an invalid
or duplicate target is encountered during Alias creation in
AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
Added an option to use designated initializers for function pointers.
Kees Cook <keescook@google.com>
2) iASL Compiler/Disassembler and Tools:
iASL: Allow compilation of External declarations with target pathnames
that refer to existing named objects within the table. Erik Schmauss.
iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
FieldUnit name also is declared via External in the same table. Erik
Schmauss.
iASL: Allow existing scope names within pathnames used in External
statements. For example:
External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
Device (ABCD)
iASL: IORT ACPI table: Implemented changes required to decode the new
Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
Disassembler: Don't abort disassembly on errors from External()
statements. Erik Schmauss.
Disassembler: fixed a possible fault when one of the Create*Field
operators references a Resource Template. ACPICA Bugzilla 1396.
iASL: In the source code, resolved some naming inconsistences across the
parsing support. Fixes confusion between "Parse Op" and "Parse Node".
Adds a new file, aslparseop.c
----------------------------------------
31 May 2017. Summary of changes for version 20170531:
0) ACPI 6.2 support:
The ACPI specification version 6.2 has been released and is available at
http://uefi.org/specifications
This version of ACPICA fully supports the ACPI 6.2 specification. Changes
are summarized below.
New ACPI tables (Table Compiler/Disassembler/Templates):
HMAT (Heterogeneous Memory Attributes Table)
WSMT (Windows SMM Security Mitigation Table)
PPTT (Processor Properties Topology Table)
New subtables for existing ACPI tables:
HEST (New subtable, Arch-deferred machine check)
SRAT (New subtable, Arch-specific affinity structure)
PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
Simple updates for existing ACPI tables:
BGRT (two new flag bits)
HEST (New bit defined for several subtables, GHES_ASSIST)
New Resource Descriptors and Resource macros (Compiler/Disassembler):
PinConfig()
PinFunction()
PinGroup()
PinGroupConfig()
PinGroupFunction()
New type for hardware error notification (section 18.3.2.9)
New predefined names/methods (Compiler/Interpreter):
_HMA (Heterogeneous Memory Attributes)
_LSI (Label Storage Information)
_LSR (Label Storage Read)
_LSW (Label Storage Write)
ASL grammar/macro changes (Compiler):
For() ASL macro, implemented with the AML while operator
Extensions to Concatenate operator
Support for multiple definition blocks in same ASL file
Clarification for Buffer operator
Allow executable AML code underneath all scopes (Devices, etc.)
Clarification/change for the _OSI return value
ASL grammar update for reference operators
Allow a zero-length string for AML filename in DefinitionBlock
Miscellaneous:
New device object notification value
Remove a notify value (0x0C) for graceful shutdown
New UUIDs for processor/cache properties and
physical package property
New _HID, ACPI0014 (Wireless Power Calibration Device)
1) ACPICA kernel-resident subsystem:
Added support to disable ACPI events on hardware-reduced platforms.
Eliminates error messages of the form "Could not enable fixed event". Lv
Zheng
Fixed a problem using Device/Thermal objects with the ObjectType and
DerefOf ASL operators. This support had not been fully/properly
implemented.
Fixed a problem where if a Buffer object containing a resource template
was longer than the actual resource template, an error was generated --
even though the AML is legal. This case has been seen in the field.
Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
The values for DUAL_PIC and MULTIPLE_APIC were reversed.
Added header file changes for the TPM2 ACPI table. Update to new version
of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
These interfaces are intended to be used only in conjunction with the
predefined _DLM method (Device Lock Method). "This object appears in a
device scope when AML access to the device must be synchronized with the
OS environment".
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: 143.1K Code, 60.0K Data, 203.1K Total
Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
Previous Release:
Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Fixed a problem where an External() declaration could not refer to
a Field Unit. Erik Schmauss.
Disassembler: Improved support for the Switch/Case operators. This
feature will disassemble AML code back to the original Switch operators
when possible, instead of an If..Else sequence. David Box
iASL and disassembler: Improved the handling of multiple extraneous
parentheses for both ASL input and disassembled ASL output.
Improved the behavior of the iASL compiler and disassembler to detect
improper use of external declarations
Disassembler: Now aborts immediately upon detection of an unknown AML
opcode. The AML parser has no real way to recover from this, and can
result in the creation of an ill-formed parse tree that causes errors
later during the disassembly.
All tools: Fixed a problem where the Unix application OSL did not handle
control-c correctly. For example, a control-c could incorrectly wake the
debugger.
AcpiExec: Improved the Control-C handling and added a handler for
segmentation faults (SIGSEGV). Supports both Windows and Unix-like
environments.
Reduced the verbosity of the generic unix makefiles. Previously, each
compilation displayed the full set of compiler options. This has been
eliminated as the options are easily inspected within the makefiles. Each
compilation now results in a single line of output.
Sync with HEAD
Sync with HEAD
Sync with HEAD
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
Sync with HEAD
27 May 2016. Summary of changes for version 20160527:
This release is available at https://acpica.org/downloads
1) ACPICA kernel-resident subsystem:
Temporarily reverted the new arbitrary bit length/alignment support in
AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
a number of regressions with the new code that need to be fully resolved
and tested before this support can be finally integrated into ACPICA.
Apologies for any inconveniences these issues may have caused.
The ACPI message macros are not configurable (ACPI_MSG_ERROR,
ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
and ACPI_MSG_BIOS_WARNING). Lv Zheng.
Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
option. Adds a new return macro, return_STR. Junk-uk Kim.
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: 136.8K Code, 51.6K Data, 188.4K Total
Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
Previous Release:
Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
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 dbobject.c was added on branch nick-nhusb on 2015-09-22 12:06:02 +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