QuarkPlatformPkg/Acpi/AcpiTables/CpuPm/CpuPm.asl

   1 /** @file
   2 CPU power management control methods
   3
   4 Copyright (c) 2013-2015 Intel Corporation.
   5
   6 SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 DefinitionBlock (
  11     "CPUPM.aml",
  12     "SSDT",
  13     0x01,
  14     "SsgPmm",
  15     "CpuPm",
  16     0x0010
  17     )
  18 {
  19     External(\_PR.CPU0, DeviceObj)
  20     External(CFGD, FieldUnitObj)
  21
  22     Scope(\)
  23     {
  24         // Config DWord, modified during POST
  25         // Bit definitions are the same as PPMFlags:
  26         //     CFGD[0] = PPM_GV3     = GV3
  27         //     CFGD[1] = PPM_TURBO   = Turbo Mode
  28         //     CFGD[2] = PPM_SUPER_LFM = N/2 Ratio
  29         //     CFGD[4] = PPM_C1      = C1 Capable, Enabled
  30         //     CFGD[5] = PPM_C2      = C2 Capable, Enabled
  31         //     CFGD[6] = PPM_C3      = C3 Capable, Enabled
  32         //     CFGD[7] = PPM_C4      = C4 Capable, Enabled
  33         //     CFGD[8] = PPM_C5      = C5/Deep C4 Capable, Enabled
  34         //     CFGD[9] = PPM_C6      = C6 Capable, Enabled
  35         //     CFGD[10] = PPM_C1E    = C1E Enabled
  36         //     CFGD[11] = PPM_C2E    = C2E Enabled
  37         //     CFGD[12] = PPM_C3E    = C3E Enabled
  38         //     CFGD[13] = PPM_C4E    = C4E Enabled
  39         //     CFGD[14] = PPM_HARD_C4E = Hard C4E Capable, Enabled
  40         //     CFGD[16] = PPM_TM1    = Thermal Monitor 1
  41         //     CFGD[17] = PPM_TM2    = Thermal Monitor 2
  42         //     CFGD[19] = PPM_PHOT   = Bi-directional ProcHot
  43         //     CFGD[21] = PPM_MWAIT_EXT = MWAIT extensions supported
  44         //     CFGD[24] = PPM_CMP    = CMP supported, Enabled
  45         //     CFGD[28] = PPM_TSTATE = CPU T states supported
  46         //
  47         // Name(CFGD, 0x80000000)
  48         // External Defined in GNVS
  49
  50         Name(PDC0,0x80000000)   // CPU0 _PDC Flags.
  51
  52         // We load it in AcpiPlatform
  53         //Name(SSDT,Package()
  54         //{
  55         //    "CPU0IST ", 0x80000000, 0x80000000,
  56         //    "CPU1IST ", 0x80000000, 0x80000000,
  57         //    "CPU0CST ", 0x80000000, 0x80000000,
  58         //    "CPU1CST ", 0x80000000, 0x80000000,
  59         //})
  60     }
  61     Scope(\_PR.CPU0)
  62     {
  63         Method(_PDC, 1)
  64         {
  65           //
  66           // Store result of PDC.
  67           //
  68           CreateDWordField(Arg0,8,CAP0)   // Point to 3rd DWORD.
  69           Store(CAP0,PDC0)                // Store It in PDC0.
  70         }
  71     }
  72
  73 }