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diff --git a/documents/changes.txt b/documents/changes.txt index c08745aa2..e3ecef022 100755 --- a/documents/changes.txt +++ b/documents/changes.txt @@ -1,4 +1,113 @@ ---------------------------------------- +16 June 2015. Summary of changes for version 20150616: + + +1) ACPICA kernel-resident subsystem: + +Across the entire ACPICA source code base, the various macros for the C +library functions (such as ACPI_STRLEN, etc.) have been removed and +replaced by the standard C library names (strlen, etc.) The original +purpose for these macros is no longer applicable. This simplification +reduces the number of macros used in the ACPICA source code +significantly, improving readability and maintainability. + +Implemented support for a new ACPI table, the OSDT. This table, the +"override" SDT, can be loaded directly by the host OS at boot time. It +enables the replacement of existing namespace objects that were installed +via the DSDT and/or SSDTs. The primary purpose for this is to replace +buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated +for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob +Moore. + +Added support for systems with (improperly) two FACS tables -- a "32-bit" +table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit +X field). This change will support both automatically. There continues to +be systems found with this issue. This support requires a change to the +AcpiSetFirmwareWakingVector interface. Also, a public global variable has +been added to allow the host to select which FACS is desired +(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more +details Lv Zheng. + +Added a new feature to allow for systems that do not contain an FACS. +Although this is already supported on hardware-reduced platforms, the +feature has been extended for all platforms. The reasoning is that we do +not want to abort the entire ACPICA initialization just because the +system is seriously buggy and has no FACS. + +Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were +not correctly transcribed from the ACPI specification in ACPICA version +20150515. + +Implemented support for the _CLS object in the AcpiGetObjectInfo external +interface. + +Updated the definitions of the TCPA and TPM2 ACPI tables to the more +recent TCG ACPI Specification, December 14, 2014. Table disassembler and +compiler also updated. Note: The TCPA "server" table is not supported by +the disassembler/table-compiler at this time. + +ACPI 6.0: Added definitions for the new GIC version field in the MADT. + +Example Code and Data Size: These are the sizes for the OS-independent +acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The +debug version of the code includes the debug output trace mechanism and +has a much larger code and data size. + + Current Release: + Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total + Debug Version: 196.2K Code, 81.0K Data, 277.2K Total + Previous Release: + Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total + Debug Version: 195.2K Code, 80.8K Data, 276.0K Total + + +2) iASL Compiler/Disassembler and Tools: + +Disassembler: Fixed a problem with the new symbolic operator disassembler +where incorrect ASL code could be emitted in some cases for the "non- +commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and +ShiftRight. The actual problem cases seem to be rather unusual in common +ASL code, however. David Box. + +Modified the linux version of acpidump to obtain ACPI tables from not +just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv +Zheng. + +iASL: Fixed a problem where the user preprocessor output file (.i) +contained extra data that was not expected. The compiler was using this +file as a temporary file and passed through #line directives in order to +keep compiler error messages in sync with the input file and line number +across multiple include files. The (.i) is no longer a temporary file as +the compiler uses a new, different file for the original purpose. + +iASL: Fixed a problem where comments within the original ASL source code +file were not passed through to the preprocessor output file, nor any +listing files. + +iASL: Fixed some issues for the handling of the "#include" preprocessor +directive and the similar (but not the same) "Include" ASL operator. + +iASL: Add support for the new OSDT in both the disassembler and compiler. + +iASL: Fixed a problem with the constant folding support where a Buffer +object could be incorrectly generated (incorrectly formed) during a +conversion to a Store() operator. + +AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new +description text for the _REV predefined name. _REV now permanently +returns 2, as per the ACPI 6.0 specification. + +Debugger: Enhanced the output of the Debug ASL object for references +produced by the Index operator. For Buffers and strings, only output the +actual byte pointed to by the index. For packages, only print the single +package element decoded by the index. Previously, the entire +buffer/string/package was emitted. + +iASL/Table-compiler: Fixed a regression where the "generic" data types +were no longer recognized, causing errors. + + +---------------------------------------- 15 May 2015. Summary of changes for version 20150515: This release implements most of ACPI 6.0 as described below. |