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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.
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31 March 2021. Summary of changes for version 20210331: This release is available at https://acpica.org/downloads, and includes all ACPI 6.4 support 1) ACPICA kernel-resident subsystem: ACPI 6.4: iASL: deprecate DDBHandleObj keyword Always create namespace nodes using AcpiNsCreateNode(). ACPICA is allocating an object using kmalloc(), but then frees it using kmem_cache_free(<"Acpi-Namespace" kmem_cache>). This is wrong. Fixed a race condition in generic serial bus operation region handler. Fixed by Hans de Goede. 2) iASL Compiler/Disassembler and ACPICA tools: ACPI 6.4: NFIT: add Location Cookie field ACPI 6.4: HMAT: add new fields/flags ACPI 6.4: Add new flags in SRAT ACPI 6.4: add SDEV secure access components ACPI 6.4: add Csi2Bus resource template ACPI 6.4: add support for PHAT table ACPI 6.4: add support for PMTT table Add disassembly support for the IVRS table. Compilation of the table is not yet complete. Fixed a potential infinite loop due to type mismatch. The for-loop is using a UINT8 counter and comparing the upper limit against a UINT32 AslGbl_ExpectedMessagesIndex maximum. In the case where AslGbl_ExpectedMessagesIndex is > 255 the counter i will wrap around to zero and the loop will never exit. I suspect the AslGbl_ExpectedMessagesIndex is never that high, but fixing this does future proof the code and cleans up static analysis warnings.Colin King. iASL/TableCompiler: update it with IORT table E.b revision changes. From shamiali2008. iASL/TableCompiler: Add compilation support for the VIOT table. Signed-off-by: Jean-Philippe Brucker. iASL/TableCompiler: Add compilation support for CEDT table. Also, update the CEDT template.
Merge changes from current as of 20200406
---------------------------------------- 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.)
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---------------------------------------- 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)
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13 December 2018. Summary of changes for version 20181213: 1) ACPICA Kernel-resident Subsystem: Fixed some buffer length issues with the GenericSerialBus, related to two of the bidirectional protocols: AttribRawProcessBytes and AttribRawBytes, which are rarely seen in the field. For these, the LEN field of the ASL buffer is now ignored. Hans de Goede Implemented a new object evaluation trace mechanism for control methods and data objects. This includes nested control methods. It is particularly useful for examining the ACPI execution during system initialization since the output is relatively terse. The flag below enables the output of the trace via the ACPI_DEBUG_PRINT_RAW interface: #define ACPI_LV_EVALUATION 0x00080000 Examples: Enter evaluation : _SB.PCI0._INI (Method) Exit evaluation : _SB.PCI0._INI Enter evaluation : _OSI (Method) Exit evaluation : _OSI Enter evaluation : _SB.PCI0.TEST (Method) Nested method call : _SB.PCI0.NST1 Exit nested method : _SB.PCI0.NST1 Exit evaluation : _SB.PCI0.TEST Added two recently-defined _OSI strings. See https://docs.microsoft.com/en-us/windows-hardware/drivers/acpi/winacpi- osi. "Windows 2018" "Windows 2018.2" Update for buffer-to-string conversions via the ToHexString ASL operator. A "0x" is now prepended to each of the hex values in the output string. This provides compatibility with other ACPI implementations. The ACPI specification is somewhat vague on this issue. Example output string after conversion: "0x01,0x02,0x03,0x04,0x05,0x06" Return a run-time error for TermArg expressions within individual package elements. Although this is technically supported by the ASL grammar, other ACPI implementations do not support this either. Also, this fixes a fault if this type of construct is ever encountered (it never has been). 2) iASL Compiler/Disassembler and Tools: iASL: Implemented a new compile option (-ww) that will promote individual warnings and remarks to errors. This is intended to enhance the firmware build process. AcpiExec: Implemented a new command-line option (-eo) to support the new object evaluation trace mechanism described above. Disassembler: Added support to disassemble OEMx tables as AML/ASL tables instead of a "unknown table" message. AcpiHelp: Improved support for the "special" predefined names such as _Lxx, _Exx, _EJx, _T_x, etc. For these, any legal hex value can now be used for "xx" and "x". ---------------------------------------- 31 October 2018. Summary of changes for version 20181031: An Operation Region regression was fixed by properly adding address ranges to a global list during initialization. This allows OS to accurately check for overlapping regions between native devices (such as PCI) and Operation regions as well as checking for region conflicts between two Operation Regions. Added support for the 2-byte extended opcodes in the code/feature that attempts to continue parsing during the table load phase. Skip parsing Device declarations (and other extended opcodes) when an error occurs during parsing. Previously, only single-byte opcodes were supported. Cleanup: Simplified the module-level code support by eliminating a useless global variable (AcpiGbl_GroupModuleLeveCode). 2) iASL Compiler/Disassembler and Tools: iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE could cause a fault in the preprocessor. This was an inadvertent side- effect from moving more allocations/frees to the local cache/memory mechanism. iASL: Enhanced error detection by validating that all NameSeg elements within a NamePatch actually exist. The previous behavior was spotty at best, and such errors could be improperly ignored at compiler time (never at runtime, however. There are two new error messages, as shown in the examples below: dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1) Error 6161 - ^ One or more objects within the Pathname do not exist (TTTT.BXXX) dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1) Error 6160 - One or more prefix Scopes do not exist ^ (BBBB.CBF1) iASL: Disassembler/table-compiler: Added support for the static data table TPM2 revision 3 (an older version of TPM2). The support has been added for the compiler and the disassembler. Fixed compilation of DOS format data table file on Unix/Linux systems. iASL now properly detects line continuations (\) for DOS format data table definition language files on when executing on Unix/Linux. ---------------------------------------- 03 October 2018. Summary of changes for version 20181003: 2) iASL Compiler/Disassembler and Tools: Fixed a regression introduced in version 20180927 that could cause the compiler to fault, especially with NamePaths containing one or more carats (^). Such as: ^^_SB_PCI0 Added a new remark for the Sleep() operator when the sleep time operand is larger than one second. This is a very long time for the ASL/BIOS code and may not be what was intended by the ASL writer. ---------------------------------------- 27 September 2018. Summary of changes for version 20180927: 1) ACPICA kernel-resident subsystem: Updated the GPE support to clear the status of all ACPI events when entering any/all sleep states in order to avoid premature wakeups. In theory, this may cause some wakeup events to be missed, but the likelihood of this is small. This change restores the original behavior of the ACPICA code in order to fix a regression seen from the previous "Stop unconditionally clearing ACPI IRQs during suspend/resume" change. This regression could cause some systems to incorrectly wake immediately. Updated the execution of the _REG methods during initialization and namespace loading to bring the behavior into closer conformance to the ACPI specification and other ACPI implementations: From the ACPI specification 6.2A, section 6.5.4 "_REG (Region): "Control methods must assume all operation regions are inaccessible until the _REG(RegionSpace, 1) method is executed" "The exceptions to this rule are: 1. OSPM must guarantee that the following operation regions are always accessible: SystemIO operation regions. SystemMemory operation regions when accessing memory returned by the System Address Map reporting interfaces." Since the state of both the SystemIO and SystemMemory address spaces are defined by the specification to never change, this ACPICA change ensures that now _REG is never called on them. This solves some problems seen in the field and provides compatibility with other ACPI implementations. An update to the upcoming new version of the ACPI specification will help clarify this behavior. Updated the implementation of support for the Generic Serial Bus. For the "bidirectional" protocols, the internal implementation now automatically creates a return data buffer of the maximum size (255). This handles the worst-case for data that is returned from the serial bus handler, and fixes some problems seen in the field. This new buffer is directly returned to the ASL. As such, there is no true "bidirectional" buffer, which matches the ACPI specification. This is the reason for the "double store" seen in the example ASL code in the specification, shown below: Word Process Call (AttribProcessCall): OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100) Field(TOP1, BufferAcc, NoLock, Preserve) { FLD1, 8, // Virtual register at command value 1. } Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer // as BUFF CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word) Store(0x5416, DATA) // Save 0x5416 into the data buffer Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call transaction // This is the "double store". The write to // FLD1 returns a new buffer, which is stored // back into BUFF with the second Store. 2) iASL Compiler/Disassembler and Tools: iASL: Implemented detection of extraneous/redundant uses of the Offset() operator within a Field Unit list. A remark is now issued for these. For example, the first two of the Offset() operators below are extraneous. Because both the compiler and the interpreter track the offsets automatically, these Offsets simply refer to the current offset and are unnecessary. Note, when optimization is enabled, the iASL compiler will in fact remove the redundant Offset operators and will not emit any AML code for them. OperationRegion (OPR1, SystemMemory, 0x100, 0x100) Field (OPR1) { Offset (0), // Never needed FLD1, 32, Offset (4), // Redundant, offset is already 4 (bytes) FLD2, 8, Offset (64), // OK use of Offset. FLD3, 16, } dsdt.asl 14: Offset (0), Remark 2158 - ^ Unnecessary/redundant use of Offset operator dsdt.asl 16: Offset (4), Remark 2158 - ^ Unnecessary/redundant use of Offset operator
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---------------------------------------- 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.
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---------------------------------------- 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.
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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
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22 April 2016. Summary of changes for version 20160422: 1) ACPICA kernel-resident subsystem: Fixed a regression in the GAS (generic address structure) arbitrary bit support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior and incorrect return values. Lv Zheng. ACPICA BZ 1270. ACPI 6.0: Added support for new/renamed resource macros. One new argument was added to each of these macros, and the original name has been deprecated. The AML disassembler will always disassemble to the new names. Support for the new macros was added to iASL, disassembler, resource manager, and the acpihelp utility. ACPICA BZ 1274. I2cSerialBus -> I2cSerialBusV2 SpiSerialBus -> SpiSerialBusV2 UartSerialBus -> UartSerialBusV2 ACPI 6.0: Added support for a new integer field that was appended to the package object returned by the _BIX method. This adds iASL compile-time and AML runtime error checking. ACPICA BZ 1273. ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm Subspace Type2" (Headers, Disassembler, and data table compiler). Example Code and Data Size: These are the sizes for the OS-independent acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code includes the debug output trace mechanism and has a much larger code and data size. Current Release: Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total Debug Version: 201.5K Code, 82.2K Data, 283.7K Total Previous Release: Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 2) iASL Compiler/Disassembler and Tools: iASL: Implemented an ASL grammar extension to allow/enable executable "module-level code" to be created and executed under the various operators that create new scopes. This type of AML code is already supported in all known AML interpreters, and the grammar change will appear in the next version of the ACPI specification. Simplifies the conditional runtime creation of named objects under these object types: Device PowerResource Processor Scope ThermalZone iASL: Implemented a new ASL extension, a "For" loop macro to add greater ease-of-use to the ASL language. The syntax is similar to the corresponding C operator, and is implemented with the existing AML While opcode -- thus requiring no changes to existing AML interpreters. For (Initialize, Predicate, Update) {TermList} Grammar: ForTerm := For ( Initializer // Nothing | TermArg => ComputationalData Predicate // Nothing | TermArg => ComputationalData Update // Nothing | TermArg => ComputationalData ) {TermList} iASL: The _HID/_ADR detection and validation has been enhanced to search under conditionals in order to allow these objects to be conditionally created at runtime. iASL: Fixed several issues with the constant folding feature. The improvement allows better detection and resolution of statements that can be folded at compile time. ACPICA BZ 1266. iASL/Disassembler: Fixed a couple issues with the Else{If{}...} conversion to the ASL ElseIf operator where incorrect ASL code could be generated. iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where sometimes an extra (and extraneous) set of parentheses were emitted for some combinations of operators. Although this did not cause any problems with recompilation of the disassembled code, it made the code more difficult to read. David Box. ACPICA BZ 1231. iASL: Changed to ignore the unreferenced detection for predefined names of resource descriptor elements, when the resource descriptor is created/defined within a control method. iASL: Disassembler: Fix a possible fault with externally declared Buffer objects. ---------------------------------------- 18 March 2016. Summary of changes for version 20160318: 1) ACPICA kernel-resident subsystem: Added support for arbitrary bit lengths and bit offsets for registers defined by the Generic Address Structure. Previously, only aligned bit lengths of 8/16/32/64 were supported. This was sufficient for many years, but recently some machines have been seen that require arbitrary bit- level support. ACPICA BZ 1240. Lv Zheng. Fixed an issue where the \_SB._INI method sometimes must be evaluated before any _REG methods are evaluated. Lv Zheng. Implemented several changes related to ACPI table support (Headers/Disassembler/TableCompiler): NFIT: For ACPI 6.1, updated to add some additional new fields and constants. FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 6). DMAR: Added new constants per the 10/2014 DMAR spec. IORT: Added new subtable per the 10/2015 IORT spec. HEST: For ACPI 6.1, added new constants and new subtable. DBG2: Added new constants per the 12/2015 DBG2 spec. FPDT: Fixed several incorrect fields, add the FPDT boot record structure. ACPICA BZ 1249. ERST/EINJ: Updated disassembler with new "Execute Timings" actions. Updated header support for the DMAR table to match the current version of the related spec. Added extensions to the ASL Concatenate operator to allow any ACPI object to be passed as an operand. Any object other than Integer/String/Buffer simply returns a string containing the object type. This extends the usefulness of the Printf macros. Previously, Concatenate would abort the control method if a non-data object was encountered. ACPICA source code: Deployed the C "const" keyword across the source code where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). Example Code and Data Size: These are the sizes for the OS-independent acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code includes the debug output trace mechanism and has a much larger code and data size. Current Release: Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total Debug Version: 201.0K Code, 82.0K Data, 283.0K Total Previous Release: Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 2) iASL Compiler/Disassembler and Tools: iASL/Disassembler: Improved the heuristic used to determine the number of arguments for an externally defined control method (a method in another table). Although this is an improvement, there is no deterministic way to "guess" the number of method arguments. Only the ACPI 6.0 External opcode will completely solve this problem as it is deployed (automatically) in newer BIOS code. iASL/Disassembler: Fixed an ordering issue for emitted External() ASL statements that could cause errors when the disassembled file is compiled. ACPICA BZ 1243. David Box. iASL: Fixed a regression caused by the merger of the two versions of the local strtoul64. Because of a dependency on a global variable, strtoul64 could return an error for integers greater than a 32-bit value. ACPICA BZ 1260. iASL: Fixed a regression where a fault could occur for an ASL Return statement if it invokes a control method that is not resolved. ACPICA BZ 1264. AcpiXtract: Improved input file validation: detection of binary files and non-acpidump text files. ---------------------------------------- 12 February 2016. Summary of changes for version 20160212: 1) ACPICA kernel-resident subsystem: Implemented full support for the ACPI 6.1 specification (released in January). This version of the specification is available at: http://www.uefi.org/specifications Only a relatively small number of changes were required in ACPICA to support ACPI 6.1, in these areas: - New predefined names - New _HID values - A new subtable for HEST - A few other header changes for new values Ensure \_SB_._INI is executed before any _REG methods are executed. There appears to be existing BIOS code that relies on this behavior. Lv Zheng. Reverted a change made in version 20151218 which enabled method invocations to be targets of various ASL operators (SuperName and Target grammar elements). While the new behavior is supported by the ACPI specification, other AML interpreters do not support this behavior and never will. The ACPI specification will be updated for ACPI 6.2 to remove this support. Therefore, the change was reverted to the original ACPICA behavior. ACPICA now supports the GCC 6 compiler. Current Release: (Note: build changes increased sizes) Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total Debug Version: 200.4K Code, 82.0K Data, 282.4K Total Previous Release: Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 2) iASL Compiler/Disassembler and Tools: Completed full support for the ACPI 6.0 External() AML opcode. The compiler emits an external AML opcode for each ASL External statement. This opcode is used by the disassembler to assist with the disassembly of external control methods by specifying the required number of arguments for the method. AML interpreters do not use this opcode. To ensure that interpreters do not even see the opcode, a block of one or more external opcodes is surrounded by an "If(0)" construct. As this feature becomes commonly deployed in BIOS code, the ability of disassemblers to correctly disassemble AML code will be greatly improved. David Box. iASL: Implemented support for an optional cross-reference output file. The -lx option will create a the cross-reference file with the suffix "xrf". Three different types of cross-reference are created in this file: - List of object references made from within each control method - Invocation (caller) list for each user-defined control method - List of references to each non-method object in the namespace iASL: Method invocations as ASL Target operands are now disallowed and flagged as errors in preparation for ACPI 6.2 (see the description of the problem above).
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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. ----------------------------------------
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---------------------------------------- 10 April 2015. Summary of changes for version 20150410: Reverted a change introduced in version 20150408 that caused a regression in the disassembler where incorrect operator symbols could be emitted. ---------------------------------------- 08 April 2015. Summary of changes for version 20150408: 1) ACPICA kernel-resident subsystem: Permanently set the return value for the _REV predefined name. It now returns 2 (was 5). This matches other ACPI implementations. _REV will be deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 for ACPI 2.0 and later. It should never be used to differentiate or identify operating systems. Added the "Windows 2015" string to the _OSI support. ACPICA will now return TRUE to a query with this string. Fixed several issues with the local version of the printf function. Added the C99 compiler option (-std=c99) to the Unix makefiles. Current Release: Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total Debug Version: 195.2K Code, 80.7K Data, 275.9K Total Previous Release: Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2) iASL Compiler/Disassembler and Tools: iASL: Implemented an enhancement to the constant folding feature to transform the parse tree to a simple Store operation whenever possible: Add (2, 3, X) ==> is converted to: Store (5, X) X = 2 + 3 ==> is converted to: Store (5, X) Updated support for the SLIC table (Software Licensing Description Table) in both the Data Table compiler and the disassembler. The SLIC table support now conforms to "Microsoft Software Licensing Tables (SLIC and MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data following the ACPI header is now defined to be "Proprietary Data", and as such, can only be entered or displayed as a hex data block. Implemented full support for the MSDM table as described in the document above. Note: The format of MSDM is similar to SLIC. Any MSDM data following the ACPI header is defined to be "Proprietary Data", and can only be entered or displayed as a hex data block. Implemented the -Pn option for the iASL Table Compiler (was only implemented for the ASL compiler). This option disables the iASL preprocessor. Disassembler: For disassembly of Data Tables, added a comment field around the Ascii equivalent data that is emitted as part of the "Raw Table Data" block. This prevents the iASL Preprocessor from possible confusion if/when the table is compiled. Disassembler: Added an option (-df) to force the disassembler to assume that the table being disassembled contains valid AML. This feature is useful for disassembling AML files that contain ACPI signatures other than DSDT or SSDT (such as OEMx or other signatures). Changes for the EFI version of the tools: 1) Fixed a build error/issue 2) Fixed a cast warning iASL: Fixed a path issue with the __FILE__ operator by making the directory prefix optional within the internal SplitInputFilename function. Debugger: Removed some unused global variables. Tests: Updated the makefile for proper generation of the AAPITS suite. ---------------------------------------- 04 February 2015. Summary of changes for version 20150204: ACPICA kernel-resident subsystem: Updated all ACPICA copyrights and signons to 2014. Added the 2014 copyright to all module headers and signons, including the standard Linux header. This affects virtually every file in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and the test suites. Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. A raw gpe handling mechanism was created to allow better handling of GPE storms that aren't easily managed by the normal handler. The raw handler allows disabling/renabling of the the GPE so that interrupt storms can be avoided in cases where events cannot be timely serviced. In this scenario, handlers should use the AcpiSetGpe() API to disable/enable the GPE. This API will leave the reference counts undisturbed, thereby preventing unintentional clearing of the GPE when the intent in only to temporarily disable it. Raw handlers allow enabling and disabling of a GPE by removing GPE register locking. As such, raw handlers much provide their own locks while using GPE API's to protect access to GPE data structures. Lv Zheng Events: Always modify GPE registers under the GPE lock. Applies GPE lock around AcpiFinishGpe() to protect access to GPE register values. Reported as bug by joe.liu@apple.com. Unix makefiles: Separate option to disable optimizations and _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the NOOPT disable option and creates a separate flag (NOFORTIFY) for this purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined errors when building ACPICA. This allows disabling the option without also having to disable optimazations. David Box Current Release: Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total Debug Version: 199.2K Code, 82.4K Data, 281.6K Total ---------------------------------------- 07 November 2014. Summary of changes for version 20141107: This release is available at https://acpica.org/downloads This release introduces and implements language extensions to ASL that provide support for symbolic ("C-style") operators and expressions. These language extensions are known collectively as ASL+. 1) iASL Compiler/Disassembler and Tools: Disassembler: Fixed a problem with disassembly of the UartSerialBus macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. Box. Disassembler: Fixed the Unicode macro support to add escape sequences. All non-printable ASCII values are emitted as escape sequences, as well as the standard escapes for quote and backslash. Ensures that the disassembled macro can be correctly recompiled. iASL: Added Printf/Fprintf macros for formatted output. These macros are translated to existing AML Concatenate and Store operations. Printf writes to the ASL Debug object. Fprintf allows the specification of an ASL name as the target. Only a single format specifier is required, %o, since the AML interpreter dynamically converts objects to the required type. David E. Box. (old) Store (Concatenate (Concatenate (Concatenate (Concatenate (Concatenate (Concatenate (Concatenate ("", Arg0), ": Unexpected value for "), Arg1), ", "), Arg2), " at line "), Arg3), Debug) (new) Printf ("%o: Unexpected value for %o, %o at line %o", Arg0, Arg1, Arg2, Arg3) (old) Store (Concatenate (Concatenate (Concatenate (Concatenate ("", Arg1), ": "), Arg0), " Successful"), STR1) (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) iASL: Added debug options (-bp, -bt) to dynamically prune levels of the ASL parse tree before the AML code is generated. This allows blocks of ASL code to be removed in order to help locate and identify problem devices and/or code. David E. Box. AcpiExec: Added support (-fi) for an optional namespace object initialization file. This file specifies initial values for namespace objects as necessary for debugging and testing different ASL code paths that may be taken as a result of BIOS options. 2) Overview of symbolic operator support for ASL (ASL+) ------------------------------------------------------- As an extension to the ASL language, iASL implements support for symbolic (C-style) operators for math and logical expressions. This can greatly simplify ASL code as well as improve both readability and maintainability. These language extensions can exist concurrently with all legacy ASL code and expressions. The symbolic extensions are 100% compatible with existing AML interpreters, since no new AML opcodes are created. To implement the extensions, the iASL compiler transforms the symbolic expressions into the legacy ASL/AML equivalents at compile time. Full symbolic expressions are supported, along with the standard C precedence and associativity rules. Full disassembler support for the symbolic expressions is provided, and creates an automatic migration path for existing ASL code to ASL+ code via the disassembly process. By default, the disassembler now emits ASL+ code with symbolic expressions. An option (-dl) is provided to force the disassembler to emit legacy ASL code if desired. Below is the complete list of the currently supported symbolic operators with examples. See the iASL User Guide for additional information. ASL+ Syntax Legacy ASL Equivalent ----------- --------------------- // Math operators Z = X + Y Add (X, Y, Z) Z = X - Y Subtract (X, Y, Z) Z = X * Y Multiply (X, Y, Z) Z = X / Y Divide (X, Y, , Z) Z = X % Y Mod (X, Y, Z) Z = X << Y ShiftLeft (X, Y, Z) Z = X >> Y ShiftRight (X, Y, Z) Z = X & Y And (X, Y, Z) Z = X | Y Or (X, Y, Z) Z = X ^ Y Xor (X, Y, Z) Z = ~X Not (X, Z) X++ Increment (X) X-- Decrement (X) // Logical operators (X == Y) LEqual (X, Y) (X != Y) LNotEqual (X, Y) (X < Y) LLess (X, Y) (X > Y) LGreater (X, Y) (X <= Y) LLessEqual (X, Y) (X >= Y) LGreaterEqual (X, Y) (X && Y) LAnd (X, Y) (X || Y) LOr (X, Y) (!X) LNot (X) // Assignment and compound assignment operations X = Y Store (Y, X) X += Y Add (X, Y, X) X -= Y Subtract (X, Y, X) X *= Y Multiply (X, Y, X) X /= Y Divide (X, Y, , X) X %= Y Mod (X, Y, X) X <<= Y ShiftLeft (X, Y, X) X >>= Y ShiftRight (X, Y, X) X &= Y And (X, Y, X) X |= Y Or (X, Y, X) X ^= Y Xor (X, Y, X) 3) ASL+ Examples: ----------------- Legacy ASL: If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 0x03FB), 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) { And (MEMB, 0xFFFFFFF0, SRMB) Store (MEMB, Local2) Store (PDBM, Local1) And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) Store (SRMB, MEMB) Or (PDBM, 0x02, PDBM) } ASL+ version: If (((R510 & 0x03FB) == 0x02E0) || ((R520 & 0x03FB) == 0x02E0) || ((R530 & 0x03FB) == 0x02E0) || ((R540 & 0x03FB) == 0x02E0)) { SRMB = (MEMB & 0xFFFFFFF0) Local2 = MEMB Local1 = PDBM PDBM &= 0xFFFFFFFFFFFFFFF9 MEMB = SRMB PDBM |= 0x02 } Legacy ASL: Store (0x1234, Local1) Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) Store (Index (PKG1, 0x03), Local6) Store (Add (Local3, Local2), Debug) Add (Local1, 0x0F, Local2) Add (Local1, Multiply (Local2, Local3), Local2) Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) ASL+ version: Local1 = 0x1234 Local3 = (((Local1 + TEST) + 0x20) * Local2) Local3 = (Local2 * ((Local1 + TEST) + 0x20)) Local3 = (Local1 + (TEST + (0x20 * Local2))) Local6 = Index (PKG1, 0x03) Debug = (Local3 + Local2) Local2 = (Local1 + 0x0F) Local2 = (Local1 + (Local2 * Local3)) Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
---------------------------------------- 26 September 2014. Summary of changes for version 20140926: 1) ACPICA kernel-resident subsystem: Updated the GPIO operation region handler interface (GeneralPurposeIo). In order to support GPIO Connection objects with multiple pins, along with the related Field objects, the following changes to the interface have been made: The Address is now defined to be the offset in bits of the field unit from the previous invocation of a Connection. It can be viewed as a "Pin Number Index" into the connection resource descriptor. The BitWidth is the exact bit width of the field. It is usually one bit, but not always. See the ACPICA reference guide (section 8.8.6.2.1) for additional information and examples. GPE support: During ACPICA/GPE initialization, ensure that all GPEs with corresponding _Lxx/_Exx methods are disabled (they may have been enabled by the firmware), so that they cannot fire until they are enabled via AcpiUpdateAllGpes. Rafael J. Wysocki. Added a new return flag for the Event/GPE status interfaces -- AcpiGetEventStatus and AcpiGetGpeStatus. The new ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or GPE currently has a handler associated with it, and can thus actually affect the system. 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: 99.1K Code, 27.3K Data, 126.4K Total Debug Version: 192.8K Code, 79.9K Data, 272.7K Total Previous Release: Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2) iASL Compiler/Disassembler and Tools: iASL: Fixed a memory allocation/free regression introduced in 20140828 that could cause the compiler to crash. This was introduced inadvertently during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 1113. iASL: Removed two error messages that have been found to create false positives, until they can be fixed and fully validated (ACPICA BZ 1112): 1) Illegal forward reference within a method 2) Illegal reference across two methods iASL: Implemented a new option (-lm) to create a hardware mapping file that summarizes all GPIO, I2C, SPI, and UART connections. This option works for both the compiler and disassembler. See the iASL compiler user guide for additional information and examples (section 6.4.6). AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to version 2. This corrects the AE_BAD_HEADER exception seen on systems with a version 1 RSDP. Lv Zheng ACPICA BZ 1097. AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode unless STDIN is actually a terminal. Assists with batch-mode processing. ACPICA BZ 1114. Disassembler/AcpiHelp: Added another large group of recognized _HID values. ---------------------------------------- 28 August 2014. Summary of changes for version 20140828: 1) ACPICA kernel-resident subsystem: Fixed a problem related to the internal use of the Timer() operator where a 64-bit divide could cause an attempted link to a double-precision math library. This divide is not actually necessary, so the code was restructured to eliminate it. Lv Zheng. ACPI 5.1: Added support for the runtime validation of the _DSD package (similar to the iASL support). ACPI 5.1/Headers: Added support for the GICC affinity subtable to the SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 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: 98.8K Code, 27.3K Data, 126.1K Total Debug Version: 192.1K Code, 79.8K Data, 271.9K Total Previous Release: Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2) iASL Compiler/Disassembler and Tools: AcpiExec: Fixed a problem on unix systems where the original terminal state was not always properly restored upon exit. Seen when using the -v option. ACPICA BZ 1104. iASL: Fixed a problem with the validation of the ranges/length within the Memory24 resource descriptor. There was a boundary condition when the range was equal to the (length -1) caused by the fact that these values are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 Disassembler: Fixed a problem with the GpioInt descriptor interrupt polarity flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword is now supported properly. ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported in the disassembler, data table compiler, and table template generator. iASL: Added a requirement for Device() objects that one of either a _HID or _ADR must exist within the scope of a Device, as per the ACPI specification. Remove a similar requirement that was incorrectly in place for the _DSD object. iASL: Added error detection for illegal named references within control methods that would cause runtime failures. Now trapped as errors are: 1) References to objects within a non-parent control method. 2) Forward references (within a method) -- for control methods, AML interpreters use a one-pass parse of control methods. ACPICA BZ 1008. iASL: Added error checking for dependencies related to the _PSx power methods. ACPICA BZ 1029. 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, _PS3. 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same scope. iASL and table compiler: Cleanup miscellaneous memory leaks by fully deploying the existing object and string caches and adding new caches for the table compiler. iASL: Split the huge parser source file into multiple subfiles to improve manageability. Generation now requires the M4 macro preprocessor, which is part of the Bison distribution on both unix and windows platforms. AcpiSrc: Fixed and removed all extraneous warnings generated during entire ACPICA source code scan and/or conversion. ---------------------------------------- 24 July 2014. Summary of changes for version 20140724: The ACPI 5.1 specification has been released and is available at: http://uefi.org/specs/access 0) ACPI 5.1 support in ACPICA: ACPI 5.1 is fully supported in ACPICA as of this release. New predefined names. Support includes iASL and runtime ACPICA validation. _CCA (Cache Coherency Attribute). _DSD (Device-Specific Data). David Box. Modifications to existing ACPI tables. Support includes headers, iASL Data Table compiler, disassembler, and the template generator. FADT - New fields and flags. Graeme Gregory. GTDT - One new subtable and new fields. Tomasz Nowicki. MADT - Two new subtables. Tomasz Nowicki. PCCT - One new subtable. Miscellaneous. New notification type for System Resource Affinity change events. 1) ACPICA kernel-resident subsystem: Fixed a regression introduced in 20140627 where a fault can happen during the deletion of Alias AML namespace objects. The problem affected both the core ACPICA and the ACPICA tools including iASL and AcpiExec. Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a simple mechanism to enable wake GPEs that have no associated handler or control method. Rafael Wysocki. Updated the AcpiEnableGpe interface to disallow the enable if there is no handler or control method associated with the particular GPE. This will help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. Updated GPE handling and dispatch by disabling the GPE before clearing the status bit for edge-triggered GPEs. Lv Zheng. Added Timer() support to the AML Debug object. The current timer value is now displayed with each invocation of (Store to) the debug object to enable simple generation of execution times for AML code (method execution for example.) ACPICA BZ 1093. 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: 98.7K Code, 27.3K Data, 126.0K Total Debug Version: 192.0K Code, 79.7K Data, 271.7K Total Previous Release: Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2) iASL Compiler/Disassembler and Tools: Fixed an issue with the recently added local printf implementation, concerning width/precision specifiers that could cause incorrect output. Lv Zheng. ACPICA BZ 1094. Disassembler: Added support to detect buffers that contain UUIDs and disassemble them to an invocation of the ToUUID operator. Also emit commented descriptions of known ACPI-related UUIDs. AcpiHelp: Added support to display known ACPI-related UUIDs. New option, -u. Adds three new files. iASL: Update table compiler and disassembler for DMAR table changes that were introduced in September 2013. With assistance by David Woodhouse. ---------------------------------------- 27 June 2014. Summary of changes for version 20140627: 1) ACPICA kernel-resident subsystem: Formatted Output: Implemented local versions of standard formatted output utilities such as printf, etc. Over time, it has been discovered that there are in fact many portability issues with printf, and the addition of this feature will fix/prevent these issues once and for all. Some known issues are summarized below: 1) Output of 64-bit values is not portable. For example, UINT64 is %ull for the Linux kernel and is %uI64 for some MSVC versions. 2) Invoking printf consistently in a manner that is portable across both 32-bit and 64-bit platforms is difficult at best in many situations. 3) The output format for pointers varies from system to system (leading zeros especially), and leads to inconsistent output from ACPICA across platforms. 4) Certain platform-specific printf formats may conflict with ACPICA use. 5) If there is no local C library available, ACPICA now has local support for printf. -- To address these printf issues in a complete manner, ACPICA now directly implements a small subset of printf format specifiers, only those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. Implemented support for ACPICA generation within the EFI environment. Initially, the AcpiDump utility is supported in the UEFI shell environment. Lv Zheng. Added a new external interface, AcpiLogError, to improve ACPICA portability. This allows the host to redirect error messages from the ACPICA utilities. Lv Zheng. Added and deployed new OSL file I/O interfaces to improve ACPICA portability: AcpiOsOpenFile AcpiOsCloseFile AcpiOsReadFile AcpiOsWriteFile AcpiOsGetFileOffset AcpiOsSetFileOffset There are C library implementations of these functions in the new file service_layers/oslibcfs.c -- however, the functions can be implemented by the local host in any way necessary. Lv Zheng. Implemented a mechanism to disable/enable ACPI table checksum validation at runtime. This can be useful when loading tables very early during OS initialization when it may not be possible to map the entire table in order to compute the checksum. Lv Zheng. Fixed a buffer allocation issue for the Generic Serial Bus support. Originally, a fixed buffer length was used. This change allows for variable-length buffers based upon the protocol indicated by the field access attributes. Reported by Lan Tianyu. Lv Zheng. Fixed a problem where an object detached from a namespace node was not properly terminated/cleared and could cause a circular list problem if reattached. ACPICA BZ 1063. David Box. Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. Fixed a possible memory leak in an error return path within the function AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 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: 98.7K Code, 27.2K Data, 125.9K Total Debug Version: 191.7K Code, 79.6K Data, 271.3K Total Previous Release: Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2) iASL Compiler/Disassembler and Tools: Disassembler: Add dump of ASCII equivalent text within a comment at the end of each line of the output for the Buffer() ASL operator. AcpiDump: Miscellaneous changes: Fixed repetitive table dump in -n mode. For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if the ACPI 2.0 GUID fails. iASL: Fixed a problem where the compiler could fault if incorrectly given an acpidump output file as input. ACPICA BZ 1088. David Box. AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if they are invoked without any arguments. Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 1086. Colin Ian King. Disassembler: Cleaned up a block of code that extracts a parent Op object. Added a comment that explains that the parent is guaranteed to be valid in this case. ACPICA BZ 1069. ---------------------------------------- 24 April 2014. Summary of changes for version 20140424: 1) ACPICA kernel-resident subsystem: Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. Some of these tables are known to contain a trailing NULL entry. Lv Zheng. Removed an extraneous error message for the case where there are a large number of system GPEs (> 124). This was the "32-bit FADT register is too long to convert to GAS struct" message, which is irrelevant for GPEs since the GPEx_BLK_LEN fields of the FADT are always used instead of the (limited capacity) GAS bit length. Also, several changes to ensure proper support for GPE numbers > 255, where some "GPE number" fields were 8-bits internally. Implemented and deployed additional configuration support for the public ACPICA external interfaces. Entire classes of interfaces can now be easily modified or configured out, replaced by stubbed inline functions by default. Lv Zheng. Moved all public ACPICA runtime configuration globals to the public ACPICA external interface file for convenience. Also, removed some obsolete/unused globals. See the file acpixf.h. Lv Zheng. Documentation: Added a new section to the ACPICA reference describing the maximum number of GPEs that can be supported by the FADT-defined GPEs in block zero and one. About 1200 total. See section 4.4.1 of the ACPICA reference. 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: 96.8K Code, 27.2K Data, 124.0K Total Debug Version: 189.5K Code, 79.7K Data, 269.2K Total Previous Release: Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2) iASL Compiler/Disassembler and Tools: iASL and disassembler: Add full support for the LPIT table (Low Power Idle Table). Includes support in the disassembler, data table compiler, and template generator. AcpiDump utility: 1) Add option to force the use of the RSDT (over the XSDT). 2) Improve validation of the RSDP signature (use 8 chars instead of 4). iASL: Add check for predefined packages that are too large. For predefined names that contain subpackages, check if each subpackage is too large. (Check for too small already exists.) Debugger: Updated the GPE command (which simulates a GPE by executing the GPE code paths in ACPICA). The GPE device is now optional, and defaults to the GPE 0/1 FADT-defined blocks. Unix application OSL: Update line-editing support. Add additional error checking and take care not to reset terminal attributes on exit if they were never set. This should help guarantee that the terminal is always left in the previous state on program exit. ---------------------------------------- 25 March 2014. Summary of changes for version 20140325: 1) ACPICA kernel-resident subsystem: Updated the auto-serialize feature for control methods. This feature automatically serializes all methods that create named objects in order to prevent runtime errors. The update adds support to ignore the currently executing AML SyncLevel when invoking such a method, in order to prevent disruption of any existing SyncLevel priorities that may exist in the AML code. Although the use of SyncLevels is relatively rare, this change fixes a regression where an AE_AML_MUTEX_ORDER exception can appear on some machines starting with the 20140214 release. Added a new external interface to allow the host to install ACPI tables very early, before the namespace is even created. AcpiInstallTable gives the host additional flexibility for ACPI table management. Tables can be installed directly by the host as if they had originally appeared in the XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables (anything except the DSDT and FACS). Adds a new file, tbdata.c, along with additional internal restructuring and cleanup. See the ACPICA Reference for interface details. Lv Zheng. Added validation of the checksum for all incoming dynamically loaded tables (via external interfaces or via AML Load/LoadTable operators). Lv Zheng. Updated the use of the AcpiOsWaitEventsComplete interface during Notify and GPE handler removal. Restructured calls to eliminate possible race conditions. Lv Zheng. Added a warning for the use/execution of the ASL/AML Unload (table) operator. This will help detect and identify machines that use this operator if and when it is ever used. This operator has never been seen in the field and the usage model and possible side-effects of the drastic runtime action of a full table removal are unknown. Reverted the use of #pragma push/pop which was introduced in the 20140214 release. It appears that push and pop are not implemented by enough compilers to make the use of this feature feasible for ACPICA at this time. However, these operators may be deployed in a future ACPICA release. Added the missing EXPORT_SYMBOL macros for the install and remove SCI handler interfaces. Source code generation: 1) Disabled the use of the "strchr" macro for the gcc-specific generation. For some versions of gcc, this macro can periodically expose a compiler bug which in turn causes compile-time error(s). 2) Added support for PPC64 compilation. Colin Ian King. 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: 97.0K Code, 27.2K Data, 124.2K Total Debug Version: 189.7K Code, 79.5K Data, 269.2K Total Previous Release: Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2) iASL Compiler/Disassembler and Tools: Disassembler: Added several new features to improve the readability of the resulting ASL code. Extra information is emitted within comment fields in the ASL code: 1) Known _HID/_CID values are decoded to descriptive text. 2) Standard values for the Notify() operator are decoded to descriptive text. 3) Target operands are expanded to full pathnames (in a comment) when possible. Disassembler: Miscellaneous updates for extern() handling: 1) Abort compiler if file specified by -fe option does not exist. 2) Silence unnecessary warnings about argument count mismatches. 3) Update warning messages concerning unresolved method externals. 4) Emit "UnknownObj" keyword for externals whose type cannot be determined. AcpiHelp utility: 1) Added the -a option to display both the ASL syntax and the AML encoding for an input ASL operator. This effectively displays all known information about an ASL operator with one AcpiHelp invocation. 2) Added substring match support (similar to a wildcard) for the -i (_HID/PNP IDs) option. iASL/Disassembler: Since this tool does not yet support execution on big- endian machines, added detection of endianness and an error message if execution is attempted on big-endian. Support for big-endian within iASL is a feature that is on the ACPICA to-be-done list. AcpiBin utility: 1) Remove option to extract binary files from an acpidump; this function is made obsolete by the AcpiXtract utility. 2) General cleanup of open files and allocated buffers. ---------------------------------------- 14 February 2014. Summary of changes for version 20140214: 1) ACPICA kernel-resident subsystem: Implemented a new mechanism to proactively prevent problems with ill- behaved reentrant control methods that create named ACPI objects. This behavior is illegal as per the ACPI specification, but is nonetheless frequently seen in the field. Previously, this could lead to an AE_ALREADY_EXISTS exception if the method was actually entered by more than one thread. This new mechanism detects such methods at table load time and marks them "serialized" to prevent reentrancy. A new global option, AcpiGbl_AutoSerializeMethods, has been added to disable this feature if desired. This mechanism and global option obsoletes and supersedes the previous AcpiGbl_SerializeAllMethods option. Added the "Windows 2013" string to the _OSI support. ACPICA will now respond TRUE to _OSI queries with this string. It is the stated policy of ACPICA to add new strings to the _OSI support as soon as possible after they are defined. See the full ACPICA _OSI policy which has been added to the utilities/utosi.c file. Hardened/updated the _PRT return value auto-repair code: 1) Do not abort the repair on a single subpackage failure, continue to check all subpackages. 2) Add check for the minimum subpackage length (4). 3) Properly handle extraneous NULL package elements. Added support to avoid the possibility of infinite loops when traversing object linked lists. Never allow an infinite loop, even in the face of corrupted object lists. ACPICA headers: Deployed the use of #pragma pack(push) and #pragma pack(pop) directives to ensure that the ACPICA headers are independent of compiler settings or other host headers. 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: 96.5K Code, 27.2K Data, 123.7K Total Debug Version: 188.6K Code, 79.0K Data, 267.6K Total Previous Release: Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2) iASL Compiler/Disassembler and Tools: iASL/Table-compiler: Fixed a problem with support for the SPMI table. The first reserved field was incorrectly forced to have a value of zero. This change correctly forces the field to have a value of one. ACPICA BZ 1081. Debugger: Added missing support for the "Extra" and "Data" subobjects when displaying object data. Debugger: Added support to display entire object linked lists when displaying object data. iASL: Removed the obsolete -g option to obtain ACPI tables from the Windows registry. This feature has been superseded by the acpidump utility. ---------------------------------------- 14 January 2014. Summary of changes for version 20140114: 1) ACPICA kernel-resident subsystem: Updated all ACPICA copyrights and signons to 2014. Added the 2014 copyright to all module headers and signons, including the standard Linux header. This affects virtually every file in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and the test suites. Improved parameter validation for AcpiInstallGpeBlock. Added the following checks: 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2) There is not already a GPE block attached to the device. Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a device. Correctly support "references" in the ACPI_OBJECT. This change fixes the support to allow references (namespace nodes) to be passed as arguments to control methods via the evaluate object interface. This is probably most useful for testing purposes, however. Improved support for 32/64 bit physical addresses in printf()-like output. This change improves the support for physical addresses in printf debug statements and other output on both 32-bit and 64-bit hosts. It consistently outputs the appropriate number of bytes for each host. The %p specifier is unsatisfactory since it does not emit uniform output on all hosts/clib implementations (on some, leading zeros are not supported, leading to difficult-to-read output). 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: 96.2K Code, 27.0K Data, 123.2K Total Debug Version: 187.5K Code, 78.3K Data, 265.8K Total Previous Release: Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2) iASL Compiler/Disassembler and Tools: iASL: Fix a possible fault when using the Connection() operator. Fixes a problem if the parent Field definition for the Connection operator refers to an operation region that does not exist. ACPICA BZ 1064. AcpiExec: Load of local test tables is now optional. The utility has the capability to load some various tables to test features of ACPICA. However, there are enough of them that the output of the utility became confusing. With this change, only the required local tables are displayed (RSDP, XSDT, etc.) along with the actual tables loaded via the command line specification. This makes the default output simler and easier to understand. The -el command line option restores the original behavior for testing purposes. AcpiExec: Added support for overlapping operation regions. This change expands the simulation of operation regions by supporting regions that overlap within the given address space. Supports SystemMemory and SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. AcpiExec: Added region handler support for PCI_Config and EC spaces. This allows AcpiExec to simulate these address spaces, similar to the current support for SystemMemory and SystemIO. Debugger: Added new command to read/write/compare all namespace objects. The command "test objects" will exercise the entire namespace by writing new values to each data object, and ensuring that the write was successful. The original value is then restored and verified. Debugger: Added the "test predefined" command. This change makes this test public and puts it under the new "test" command. The test executes each and every predefined name within the current namespace.
Rebase to HEAD as of a few days ago.
sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments")
sync with head
import new acpica
Sync with HEAD.
sync with head
Sync with HEAD
file asllisting.c was added on branch jruoho-x86intr on 2011-06-06 09:08:50 +0000
file asllisting.c was added on branch rmind-uvmplock on 2011-03-05 20:54:24 +0000
file asllisting.c was added on branch bouyer-quota2 on 2011-02-17 12:00:19 +0000
Import 20110211.
Reimport ACPICA 20100528 to a new location.
Initial revision