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audk/Vlv2DeviceRefCodePkg/ValleyView2Soc/CPU/PowerManagement/AcpiTables/Ssdt/ApTst.asl

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Upload BSD-licensed Vlv2TbltDevicePkg and Vlv2DeviceRefCodePkg to https://svn.code.sf.net/p/edk2/code/trunk/edk2/, which are for MinnowBoard MAX open source project. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Wei <david.wei@intel.com> Reviewed-by: Mike Wu <mike.wu@intel.com> Reviewed-by: Hot Tian <hot.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16599 6f19259b-4bc3-4df7-8a09-765794883524
2015-01-12 10:37:20 +01:00
/*-----------------------------------------------------------------------------
-------------------------------------------------------------------------------
Intel Platform Processor Power Management BIOS Reference Code
Copyright (c) 2007 - 2014, Intel Corporation
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Filename: APTST.ASL
Revision: Refer to Readme
Date: Refer to Readme
--------------------------------------------------------------------------------
-------------------------------------------------------------------------------
This Processor Power Management BIOS Source Code is furnished under license
and may only be used or copied in accordance with the terms of the license.
The information in this document is furnished for informational use only, is
subject to change without notice, and should not be construed as a commitment
by Intel Corporation. Intel Corporation assumes no responsibility or liability
for any errors or inaccuracies that may appear in this document or any
software that may be provided in association with this document.
Except as permitted by such license, no part of this document may be
reproduced, stored in a retrieval system, or transmitted in any form or by
any means without the express written consent of Intel Corporation.
WARNING: You are authorized and licensed to install and use this BIOS code
ONLY on an IST PC. This utility may damage any system that does not
meet these requirements.
An IST PC is a computer which
(1) Is capable of seamlessly and automatically transitioning among
multiple performance states (potentially operating at different
efficiency ratings) based upon power source changes, END user
preference, processor performance demand, and thermal conditions; and
(2) Includes an Intel Pentium II processors, Intel Pentium III
processor, Mobile Intel Pentium III Processor-M, Mobile Intel Pentium 4
Processor-M, Intel Pentium M Processor, or any other future Intel
processors that incorporates the capability to transition between
different performance states by altering some, or any combination of,
the following processor attributes: core voltage, core frequency, bus
frequency, number of processor cores available, or any other attribute
that changes the efficiency (instructions/unit time-power) at which the
processor operates.
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
NOTES:
(1) <TODO> - IF the trap range and port definitions do not match those
specified by this reference code, this file must be modified IAW the
individual implmentation.
--------------------------------------------------------------------------------
------------------------------------------------------------------------------*/
DefinitionBlock(
"APTST.aml",
"SSDT",
0x01,
"PmRef",
"ApTst",
0x3000
)
{
External(\_PR.CPU1, DeviceObj)
External(\_PR.CPU2, DeviceObj)
External(\_PR.CPU3, DeviceObj)
External(\_PR.CPU0._PTC)
External(\_PR.CPU0._TSS)
External(PDC0)
External(CFGD)
External(MPEN)
Scope(\_PR.CPU1)
{
Name(_TPC, 0) // All T-States are available
//
// T-State Control/Status interface
//
Method(_PTC, 0)
{
Return(\_PR.CPU0._PTC)
}
Method(_TSS, 0)
{
Return(\_PR.CPU0._TSS)
}
//
// T-State Dependency
//
Method(_TSD, 0)
{
//
// IF four cores are supported/enabled && !(direct access to MSR)
// Report 4 processors and SW_ANY as the coordination
// IF two cores are supported/enabled && !(direct access to MSR)
// Report 2 processors and SW_ANY as the coordination type
// ELSE
// Report 1 processor and SW_ALL as the coordination type (domain 1)
//
// CFGD[23] = Four cores enabled
// CFGD[24] = Two or more cores enabled
// PDCx[2] = OSPM is capable of direct access to On
// Demand throttling MSR
//
If(LNot(And(PDC0,4)))
{
Return(Package(){ // SW_ANY
Package(){
5, // # entries.
0, // Revision.
0, // Domain #.
0xFD, // Coord Type- SW_ANY
MPEN // # processors.
}
})
}
Return(Package(){ // SW_ALL
Package(){
5, // # entries.
0, // Revision.
1, // Domain #.
0xFC, // Coord Type- SW_ALL
1 // # processors.
}
})
}
} // End of CPU1
Scope(\_PR.CPU2)
{
Name(_TPC, 0) // All T-States are available
//
// T-State Control/Status interface
//
Method(_PTC, 0)
{
Return(\_PR.CPU0._PTC)
}
Method(_TSS, 0)
{
Return(\_PR.CPU0._TSS)
}
//
// T-State Dependency
//
Method(_TSD, 0)
{
//
// IF four cores are supported/enabled && !(direct access to MSR)
// Report 4 processors and SW_ANY as the coordination
// IF two cores are supported/enabled && !(direct access to MSR)
// Report 2 processors and SW_ANY as the coordination type
// ELSE
// Report 1 processor and SW_ALL as the coordination type (domain 1)
//
// CFGD[23] = Four cores enabled
// CFGD[24] = Two or more cores enabled
// PDCx[2] = OSPM is capable of direct access to On
// Demand throttling MSR
//
If(LNot(And(PDC0,4)))
{
Return(Package(){ // SW_ANY
Package(){
5, // # entries.
0, // Revision.
0, // Domain #.
0xFD, // Coord Type- SW_ANY
MPEN // # processors.
}
})
}
Return(Package(){ // SW_ALL
Package(){
5, // # entries.
0, // Revision.
1, // Domain #.
0xFC, // Coord Type- SW_ALL
1 // # processors.
}
})
}
} // End of CPU2
Scope(\_PR.CPU3)
{
Name(_TPC, 0) // All T-States are available
//
// T-State Control/Status interface
//
Method(_PTC, 0)
{
Return(\_PR.CPU0._PTC)
}
Method(_TSS, 0)
{
Return(\_PR.CPU0._TSS)
}
//
// T-State Dependency
//
Method(_TSD, 0)
{
//
// IF four cores are supported/enabled && !(direct access to MSR)
// Report 4 processors and SW_ANY as the coordination
// IF two cores are supported/enabled && !(direct access to MSR)
// Report 2 processors and SW_ANY as the coordination type
// ELSE
// Report 1 processor and SW_ALL as the coordination type (domain 1)
//
// CFGD[23] = Four cores enabled
// CFGD[24] = Two or more cores enabled
// PDCx[2] = OSPM is capable of direct access to On
// Demand throttling MSR
//
If(LNot(And(PDC0,4)))
{
Return(Package(){ // SW_ANY
Package(){
5, // # entries.
0, // Revision.
0, // Domain #.
0xFD, // Coord Type- SW_ANY
MPEN // # processors.
}
})
}
Return(Package(){ // SW_ALL
Package(){
5, // # entries.
0, // Revision.
1, // Domain #.
0xFC, // Coord Type- SW_ALL
1 // # processors.
}
})
}
} // End of CPU3
} // End of Definition Block