QuarkPlatformPkg/Acpi/AcpiTables/CpuPm/CpuPm.asl

   1 /** @file
   2 CPU power management control methods
   3
   4 Copyright (c) 2013-2015 Intel Corporation.
   5
   6 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 DefinitionBlock (
  17     "CPUPM.aml",
  18     "SSDT",
  19     0x01,
  20     "SsgPmm",
  21     "CpuPm",
  22     0x0010
  23     )
  24 {
  25     External(\_PR.CPU0, DeviceObj)
  26     External(CFGD, FieldUnitObj)
  27
  28     Scope(\)
  29     {
  30         // Config DWord, modified during POST
  31         // Bit definitions are the same as PPMFlags:
  32         //     CFGD[0] = PPM_GV3     = GV3
  33         //     CFGD[1] = PPM_TURBO   = Turbo Mode
  34         //     CFGD[2] = PPM_SUPER_LFM = N/2 Ratio
  35         //     CFGD[4] = PPM_C1      = C1 Capable, Enabled
  36         //     CFGD[5] = PPM_C2      = C2 Capable, Enabled
  37         //     CFGD[6] = PPM_C3      = C3 Capable, Enabled
  38         //     CFGD[7] = PPM_C4      = C4 Capable, Enabled
  39         //     CFGD[8] = PPM_C5      = C5/Deep C4 Capable, Enabled
  40         //     CFGD[9] = PPM_C6      = C6 Capable, Enabled
  41         //     CFGD[10] = PPM_C1E    = C1E Enabled
  42         //     CFGD[11] = PPM_C2E    = C2E Enabled
  43         //     CFGD[12] = PPM_C3E    = C3E Enabled
  44         //     CFGD[13] = PPM_C4E    = C4E Enabled
  45         //     CFGD[14] = PPM_HARD_C4E = Hard C4E Capable, Enabled
  46         //     CFGD[16] = PPM_TM1    = Thermal Monitor 1
  47         //     CFGD[17] = PPM_TM2    = Thermal Monitor 2
  48         //     CFGD[19] = PPM_PHOT   = Bi-directional ProcHot
  49         //     CFGD[21] = PPM_MWAIT_EXT = MWAIT extensions supported
  50         //     CFGD[24] = PPM_CMP    = CMP supported, Enabled
  51         //     CFGD[28] = PPM_TSTATE = CPU T states supported
  52         //
  53         // Name(CFGD, 0x80000000)
  54         // External Defined in GNVS
  55
  56         Name(PDC0,0x80000000)   // CPU0 _PDC Flags.
  57
  58         // We load it in AcpiPlatform
  59         //Name(SSDT,Package()
  60         //{
  61         //    "CPU0IST ", 0x80000000, 0x80000000,
  62         //    "CPU1IST ", 0x80000000, 0x80000000,
  63         //    "CPU0CST ", 0x80000000, 0x80000000,
  64         //    "CPU1CST ", 0x80000000, 0x80000000,
  65         //})
  66     }
  67     Scope(\_PR.CPU0)
  68     {
  69         Method(_PDC, 1)
  70         {
  71           //
  72           // Store result of PDC.
  73           //
  74           CreateDWordField(Arg0,8,CAP0)   // Point to 3rd DWORD.
  75           Store(CAP0,PDC0)                // Store It in PDC0.
  76         }
  77     }
  78
  79 }