--- /dev/null
+/*-----------------------------------------------------------------------------\r
+-------------------------------------------------------------------------------\r
+\r
+\r
+ Intel Silvermont Processor Power Management BIOS Reference Code\r
+\r
+ Copyright (c) 2006 - 2014, Intel Corporation\r
+\r
+ This program and the accompanying materials are licensed and made available under\r
+ the terms and conditions of the BSD License that accompanies this distribution.\r
+ The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php.\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+\r
+ Filename: CPU0TST.ASL\r
+\r
+ Revision: Refer to Readme\r
+\r
+ Date: Refer to Readme\r
+\r
+--------------------------------------------------------------------------------\r
+-------------------------------------------------------------------------------\r
+\r
+ This Processor Power Management BIOS Source Code is furnished under license\r
+ and may only be used or copied in accordance with the terms of the license.\r
+ The information in this document is furnished for informational use only, is\r
+ subject to change without notice, and should not be construed as a commitment\r
+ by Intel Corporation. Intel Corporation assumes no responsibility or liability\r
+ for any errors or inaccuracies that may appear in this document or any\r
+ software that may be provided in association with this document.\r
+\r
+ Except as permitted by such license, no part of this document may be\r
+ reproduced, stored in a retrieval system, or transmitted in any form or by\r
+ any means without the express written consent of Intel Corporation.\r
+\r
+ WARNING: You are authorized and licensed to install and use this BIOS code\r
+ ONLY on an IST PC. This utility may damage any system that does not\r
+ meet these requirements.\r
+\r
+ An IST PC is a computer which\r
+ (1) Is capable of seamlessly and automatically transitioning among\r
+ multiple performance states (potentially operating at different\r
+ efficiency ratings) based upon power source changes, end user\r
+ preference, processor performance demand, and thermal conditions; and\r
+ (2) Includes an Intel Pentium II processors, Intel Pentium III\r
+ processor, Mobile Intel Pentium III Processor-M, Mobile Intel Pentium 4\r
+ Processor-M, Intel Pentium M Processor, or any other future Intel\r
+ processors that incorporates the capability to transition between\r
+ different performance states by altering some, or any combination of,\r
+ the following processor attributes: core voltage, core frequency, bus\r
+ frequency, number of processor cores available, or any other attribute\r
+ that changes the efficiency (instructions/unit time-power) at which the\r
+ processor operates.\r
+\r
+-------------------------------------------------------------------------------\r
+-------------------------------------------------------------------------------\r
+\r
+NOTES:\r
+ (1) <TODO> - IF the trap range and port definitions do not match those\r
+ specified by this reference code, this file must be modified IAW the\r
+ individual implmentation.\r
+\r
+--------------------------------------------------------------------------------\r
+------------------------------------------------------------------------------*/\r
+\r
+DefinitionBlock(\r
+ "CPU0TST.aml",\r
+ "SSDT",\r
+ 0x01,\r
+ "PmRef",\r
+ "Cpu0Tst",\r
+ 0x3000\r
+ )\r
+{\r
+ External(\_PR.CPU0, DeviceObj)\r
+ External(PDC0)\r
+ External(CFGD)\r
+ External(_PSS)\r
+\r
+ Scope(\_PR.CPU0)\r
+ {\r
+ Name(_TPC, 0) // All T-States are available\r
+\r
+ //\r
+ // T-State Control/Status interface\r
+ //\r
+ Method(_PTC, 0)\r
+ {\r
+ //\r
+ // IF OSPM is capable of direct access to MSR\r
+ // Report MSR interface\r
+ // ELSE\r
+ // Report I/O interface\r
+ //\r
+ // PDCx[2] = OSPM is capable of direct access to On\r
+ // Demand throttling MSR\r
+ //\r
+ If(And(PDC0, 0x0004)) {\r
+ Return(Package() {\r
+ ResourceTemplate(){Register(FFixedHW, 0, 0, 0)},\r
+ ResourceTemplate(){Register(FFixedHW, 0, 0, 0)}\r
+ })\r
+ }\r
+\r
+ }\r
+\r
+ // _TSS package for I/O port based T-State control\r
+ // "Power" fields are replaced with real values by the first\r
+ // call of _TSS method.\r
+ //\r
+ Name(TSSI, Package() {\r
+ Package(){100, 1000, 0, 0x00, 0},\r
+ Package(){ 88, 875, 0, 0x0F, 0},\r
+ Package(){ 75, 750, 0, 0x0E, 0},\r
+ Package(){ 63, 625, 0, 0x0D, 0},\r
+ Package(){ 50, 500, 0, 0x0C, 0},\r
+ Package(){ 38, 375, 0, 0x0B, 0},\r
+ Package(){ 25, 250, 0, 0x0A, 0},\r
+ Package(){ 13, 125, 0, 0x09, 0}\r
+ })\r
+\r
+ // _TSS package for MSR based T-State control\r
+ // "Power" fields are replaced with real values by the first\r
+ // call of _TSS method.\r
+ //\r
+ Name(TSSM, Package() {\r
+ Package(){100, 1000, 0, 0x00, 0},\r
+ Package(){ 88, 875, 0, 0x1E, 0},\r
+ Package(){ 75, 750, 0, 0x1C, 0},\r
+ Package(){ 63, 625, 0, 0x1A, 0},\r
+ Package(){ 50, 500, 0, 0x18, 0},\r
+ Package(){ 38, 375, 0, 0x16, 0},\r
+ Package(){ 25, 250, 0, 0x14, 0},\r
+ Package(){ 13, 125, 0, 0x12, 0}\r
+ })\r
+\r
+ Name(TSSF, 0) // Flag for TSSI/TSSM initialization\r
+\r
+ Method(_TSS, 0)\r
+ {\r
+ // Update "Power" fields of TSSI/TSSM with the LFM\r
+ // power data IF _PSS is available\r
+ //\r
+ IF (LAnd(LNot(TSSF),CondRefOf(_PSS)))\r
+ {\r
+ Store(_PSS, Local0)\r
+ Store(SizeOf(Local0), Local1) // _PSS size\r
+ Decrement(Local1) // Index of LFM\r
+ Store(DerefOf(Index(DerefOf(Index(Local0,Local1)),1)), Local2) // LFM Power\r
+\r
+ Store(0, Local3)\r
+ While(LLess(Local3, SizeOf(TSSI)))\r
+ {\r
+ Store(Divide(Multiply(Local2, Subtract(8, Local3)), 8),\r
+ Local4) // Power for this TSSI/TSSM entry\r
+ Store(Local4,Index(DerefOf(Index(TSSI,Local3)),1))\r
+ Store(Local4,Index(DerefOf(Index(TSSM,Local3)),1))\r
+ Increment(Local3)\r
+ }\r
+ Store(Ones, TSSF) // TSSI/TSSM are updated\r
+ }\r
+ //\r
+ // IF OSPM is capable of direct access to MSR\r
+ // Report TSSM\r
+ // ELSE\r
+ // Report TSSI\r
+ //\r
+ If(And(PDC0, 0x0004))\r
+ {\r
+ Return(TSSM)\r
+ }\r
+ Return(TSSI)\r
+ }\r
+\r
+ Method(_TDL, 0)\r
+ {\r
+ Store ("Cpu0: _TDL Called", Debug)\r
+ Name ( LFMI, 0)\r
+ Store (SizeOf(TSSM), LFMI)\r
+ Decrement(LFMI) // Index of LFM entry in TSSM\r
+ Return(LFMI)\r
+ }\r
+\r
+ //\r
+ // T-State Dependency\r
+ //\r
+ Method(_TSD, 0)\r
+ {\r
+ //\r
+ // IF four cores are supported/enabled && !(direct access to MSR)\r
+ // Report 4 processors and SW_ANY as the coordination type\r
+ // ELSE IF two cores are supported/enabled && !(direct access to MSR)\r
+ // Report 2 processors and SW_ANY as the coordination type\r
+ // ELSE\r
+ // Report 1 processor and SW_ALL as the coordination type\r
+ //\r
+ // CFGD[23] = Four cores enabled\r
+ // CFGD[24] = Two or more cores enabled\r
+ // PDCx[2] = OSPM is capable of direct access to On\r
+ // Demand throttling MSR\r
+ //\r
+ If(LAnd(And(CFGD,0x0800000),LNot(And(PDC0,4))))\r
+ {\r
+ Return(Package(){ // SW_ANY\r
+ Package(){\r
+ 5, // # entries.\r
+ 0, // Revision.\r
+ 0, // Domain #.\r
+ 0xFD, // Coord Type- SW_ANY\r
+ 4 // # processors.\r
+ }\r
+ })\r
+ }\r
+ If(LAnd(And(CFGD,0x1000000),LNot(And(PDC0,4))))\r
+ {\r
+ Return(Package(){ // SW_ANY\r
+ Package(){\r
+ 5, // # entries.\r
+ 0, // Revision.\r
+ 0, // Domain #.\r
+ 0xFD, // Coord Type- SW_ANY\r
+ 2 // # processors.\r
+ }\r
+ })\r
+ }\r
+ Return(Package(){ // SW_ALL\r
+ Package(){\r
+ 5, // # entries.\r
+ 0, // Revision.\r
+ 0, // Domain #.\r
+ 0xFC, // Coord Type- SW_ALL\r
+ 1 // # processors.\r
+ }\r
+ })\r
+ }\r
+ }\r
+} // End of Definition Block\r
+\r
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