Vlv2DeviceRefCodePkg: Fixed thermal issue.

[mirror_edk2.git] / Vlv2DeviceRefCodePkg / AcpiTablesPCAT / THERMAL.ASL

/**************************************************************************;\r
;*                                                                        *;\r
;*                                                                        *;\r
;*    Intel Corporation - ACPI Reference Code for the Baytrail            *;\r
;*    Family of Customer Reference Boards.                                *;\r
;*                                                                        *;\r
;*                                                                        *;\r
;*    Copyright (c)  1999  - 2017, Intel Corporation. All rights reserved   *;\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
;*                                                                        *;\r
;**************************************************************************/\r
\r
\r
// THERMAL.ASL represents a Thermal Zone to be used for testing on the\r
// Customer Reference Boards.\r
\r
External(\_SB.DPTF.CTOK, MethodObj)\r
\r
Scope(\_TZ)\r
{\r
\r
  // Thermal Zone 1 = DTS Thermal Zone.\r
\r
  ThermalZone(TZ01)\r
  {\r
    // Return the temperature at which the OS must perform a Critcal\r
    // Shutdown.\r
\r
    Method(_CRT,0,Serialized)\r
    {\r
      Return(Add(2732,Multiply(CRTT,10)))\r
    }\r
\r
    // Notifies ASL Code the current cooling mode.\r
    //      0 - Active cooling\r
    //      1 - Passive cooling\r
\r
    Method(_SCP,1,Serialized)\r
    {\r
      Store(Arg0,CTYP)\r
    }\r
\r
    // _TMP (Temperature)\r
    //\r
    // Return the highest of the CPU temperatures to the OS.\r
    //\r
    // Arguments: (0)\r
    //   None\r
    // Return Value:\r
    //   An Integer containing the current temperature of the thermal zone (in tenths of degrees Kelvin)\r
    //\r
    Method(_TMP,0,Serialized)\r
    {\r
      If(DTSE)\r
      {\r
        If(LGreater(DTS2, DTS1))\r
        {\r
          Store(DTS2,Local0)\r
        } else\r
        {\r
          Store(DTS1,Local0)\r
        }\r
        If (LEqual(And(Local0, 0x80), 0)) {\r
          Return(Add(2732,Multiply(Local0,10)))\r
        } else {\r
          Add(Subtract(255, Local0), 1, Local0)\r
          Return(Subtract(2732,Multiply(Local0,10)))\r
        }\r
        //\r
        // Else return a static value if both EC and DTS are unavailable.\r
        //\r
      } Else\r
      {\r
        Return(3000) // (3000-2732)/10 = 26.8 degree C\r
      }\r
    }\r
\r
    // Return the Processor(s) used for Passive Cooling.\r
\r
    Method(_PSL,0,Serialized)\r
    {\r
      If(LEqual(MPEN, 4))\r
      {\r
        //  CMP - Throttling controls all four logical CPUs.\r
        Return(Package() {\_PR.CPU0,\_PR.CPU1,\_PR.CPU2,\_PR.CPU3})\r
      }\r
\r
      If(MPEN)\r
      {\r
        //  CMP - Throttling controls both CPUs.\r
\r
        Return(Package() {\_PR.CPU0,\_PR.CPU1})\r
      }\r
\r
      Return(Package() {\_PR.CPU0})\r
    }\r
\r
    // Returns the temperature at which the OS initiates CPU throttling.\r
\r
    Method(_PSV,0,Serialized)\r
    {\r
      Return(Add(2732,Multiply(PSVT,10)))\r
    }\r
\r
    // Returns TC1 value used in the passive cooling formula.\r
\r
    Method(_TC1,0,Serialized)\r
    {\r
      Return(TC1V)\r
    }\r
\r
    // Returns TC2 value used in the passive cooling formula.\r
\r
    Method(_TC2,0,Serialized)\r
    {\r
      Return(TC2V)\r
    }\r
\r
    // Returns the sampling period used in the passive cooling formula.\r
\r
    Method(_TSP,0,Serialized)\r
    {\r
      Return(TSPV)\r
    }\r
\r
    // Returns Hot Temperature\r
\r
    Method(_HOT,0,Serialized)\r
    {\r
      Subtract(CRTT, 5, Local0)\r
      Return(Add(2732,Multiply(Local0,10)))\r
    }\r
  }\r
}\r