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      1 /**************************************************************************;
      2 ;*                                                                        *;
      3 ;*                                                                        *;
      4 ;*    Intel Corporation - ACPI Reference Code for the Baytrail            *;
      5 ;*    Family of Customer Reference Boards.                                *;
      6 ;*                                                                        *;
      7 ;*                                                                        *;
      8 ;*    Copyright (c)  1999  - 2014, Intel Corporation. All rights reserved   *;
      9 ;
     10 ; This program and the accompanying materials are licensed and made available under
     11 ; the terms and conditions of the BSD License that accompanies this distribution.
     12 ; The full text of the license may be found at
     13 ; http://opensource.org/licenses/bsd-license.php.
     14 ;
     15 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     16 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     17 ;
     18 ;*                                                                        *;
     19 ;*                                                                        *;
     20 ;**************************************************************************/
     21 
     22 
     23 // THERMAL.ASL represents a Thermal Zone to be used for testing on the
     24 // Customer Reference Boards.
     25 
     26 External(\_SB.DPTF.CTOK, MethodObj)
     27 
     28 Scope(\_TZ)
     29 {
     30 
     31   // Thermal Zone 1 = DTS Thermal Zone.
     32 
     33   ThermalZone(TZ01)
     34   {
     35     // Return the temperature at which the OS must perform a Critcal
     36     // Shutdown.
     37 
     38     Method(_CRT,0,Serialized)
     39     {
     40       Return(Add(2732,Multiply(CRTT,10)))
     41     }
     42 
     43     // Notifies ASL Code the current cooling mode.
     44     //      0 - Active cooling
     45     //      1 - Passive cooling
     46 
     47     Method(_SCP,1,Serialized)
     48     {
     49       Store(Arg0,CTYP)
     50     }
     51 
     52     // _TMP (Temperature)
     53     //
     54     // Return the highest of the CPU temperatures to the OS.
     55     //
     56     // Arguments: (0)
     57     //   None
     58     // Return Value:
     59     //   An Integer containing the current temperature of the thermal zone (in tenths of degrees Kelvin)
     60     //
     61     Method(_TMP,0,Serialized)
     62     {
     63       If(DTSE)
     64       {
     65         If(LGreater(DTS2, DTS1))
     66         {
     67           Store(DTS2,Local0)
     68         } else
     69         {
     70           Store(DTS1,Local0)
     71         }
     72         Return(Add(2732,Multiply(Local0,10)))
     73         //
     74         // Else return a static value if both EC and DTS are unavailable.
     75         //
     76       } Else
     77       {
     78         Return(3000) // (3000-2732)/10 = 26.8 degree C
     79       }
     80     }
     81 
     82     // Return the Processor(s) used for Passive Cooling.
     83 
     84     Method(_PSL,0,Serialized)
     85     {
     86       If(LEqual(MPEN, 4))
     87       {
     88         //  CMP - Throttling controls all four logical CPUs.
     89         Return(Package() {\_PR.CPU0,\_PR.CPU1,\_PR.CPU2,\_PR.CPU3})
     90       }
     91 
     92       If(MPEN)
     93       {
     94         //  CMP - Throttling controls both CPUs.
     95 
     96         Return(Package() {\_PR.CPU0,\_PR.CPU1})
     97       }
     98 
     99       Return(Package() {\_PR.CPU0})
    100     }
    101 
    102     // Returns the temperature at which the OS initiates CPU throttling.
    103 
    104     Method(_PSV,0,Serialized)
    105     {
    106       Return(Add(2732,Multiply(PSVT,10)))
    107     }
    108 
    109     // Returns TC1 value used in the passive cooling formula.
    110 
    111     Method(_TC1,0,Serialized)
    112     {
    113       Return(TC1V)
    114     }
    115 
    116     // Returns TC2 value used in the passive cooling formula.
    117 
    118     Method(_TC2,0,Serialized)
    119     {
    120       Return(TC2V)
    121     }
    122 
    123     // Returns the sampling period used in the passive cooling formula.
    124 
    125     Method(_TSP,0,Serialized)
    126     {
    127       Return(TSPV)
    128     }
    129 
    130     // Returns Hot Temperature
    131 
    132     Method(_HOT,0,Serialized)
    133     {
    134       Subtract(CRTT, 5, Local0)
    135       Return(Add(2732,Multiply(Local0,10)))
    136     }
    137   }
    138 }
    139