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diff --git a/changes.txt b/changes.txt index f328ad1..69dcdf7 100644 --- a/changes.txt +++ b/changes.txt @@ -1,4 +1,96 @@ ---------------------------------------- +20 March 2012. Summary of changes for version 20120320: + +This release is available at www.acpica.org/downloads. +The ACPI 5.0 specification is available at www.acpi.info. + +1) ACPICA Core Subsystem: + +Enhanced the sleep/wake interfaces to optionally execute the _GTS method +(Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently +does not execute these methods, and therefore these methods are often +untested. It has been seen on some systems where the execution of these +methods causes errors and also prevents the machine from entering S5. It is +therefore suggested that host operating systems do not execute these methods +by default. In the future, perhaps these methods can be optionally executed +based on the age of the system and/or what is the newest version of Windows +that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState and +AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin +Ming. + +Fixed a problem where the length of the local/common FADT was set too early. +The local FADT table length cannot be set to the common length until the +original length has been examined. There is code that checks the table length +and sets various fields appropriately. This can affect older machines with +early FADT versions. For example, this can cause inadvertent writes to the +CST_CNT register. Julian Anastasov. + +Fixed a mapping issue related to a physical table override. Use the deferred +mapping mechanism for tables loaded via the physical override OSL interface. +This allows for early mapping before the virtual memory manager is available. +Thomas Renninger, Bob Moore. + +Enhanced the automatic return-object repair code: Repair a common problem with +predefined methods that are defined to return a variable-length Package of +sub-objects. If there is only one sub-object, some BIOS ASL code mistakenly +simply returns the single object instead of a Package with one sub-object. +This new support will repair this error by wrapping a Package object around +the original object, creating the correct and expected Package with one sub- +object. Names that can be repaired in this manner include: _ALR, _CSD, _HPX, +_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 939. + +Changed the exception code returned for invalid ACPI paths passed as +parameters to external interfaces such as AcpiEvaluateObject. Was +AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. + +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. + + Previous Release: + Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total + Debug Version: 172.5K Code, 73.2K Data, 245.7K Total + Current Release: + Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total + Debug Version: 172.5K Code, 73.2K Data, 245.7K Total + + +2) iASL Compiler/Disassembler and Tools: + +iASL: Added the infrastructure and initial implementation of a integrated C- +like preprocessor. This will simplify BIOS development process by eliminating +the need for a separate preprocessing step during builds. On Windows, it also +eliminates the need to install a separate C compiler. ACPICA BZ 761. Some +features including full #define() macro support are still under development. +These preprocessor directives are supported: + #define + #elif + #else + #endif + #error + #if + #ifdef + #ifndef + #include + #pragma message + #undef + #warning +In addition, these new command line options are supported: + -D <symbol> Define symbol for preprocessor use + -li Create preprocessed output file (*.i) + -P Preprocess only and create preprocessor output file (*.i) + +Table Compiler: Fixed a problem where the equals operator within an expression +did not work properly. + +Updated iASL to use the current versions of Bison/Flex. Updated the Windows +project file to invoke these tools from the standard location. ACPICA BZ 904. +Versions supported: + Flex for Windows: V2.5.4 + Bison for Windows: V2.4.1 + +---------------------------------------- 15 February 2012. Summary of changes for version 20120215: This release is available at www.acpica.org/downloads. |