QuarkPlatformPkg/Acpi/AcpiTables/Dsdt/Tpm.asi

   1 /** @file
   2
   3 The Infineon SLB9645 TPM ACPI definition block.
   4 Provides TPM device info. and TPM presence check only.
   5
   6 Copyright (c) 2013-2015 Intel Corporation.
   7
   8 SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 Device (TPM)
  13 {
  14   //
  15   // Define _HID as Infineon TPM Device, _CID as "PNP0C31" (defined in
  16   // "Secure Startup-FVE and TPM Admin BIOS and Platform Requirements").
  17   //
  18   Name(_HID ,EISAID("INT3493"))
  19   Name(_CID, EISAID("PNP0C31"))
  20
  21   //
  22   // Readable name of this device.
  23   //
  24   Name (_STR, Unicode ("Infineon TPM 1.2 Device (SLB9645TT1.2)"))
  25
  26   //
  27   // Return the resource consumed by TPM device.
  28   //
  29   Name (_CRS, ResourceTemplate () {
  30     I2cSerialBus (0x20, ControllerInitiated, 0x00061A80, AddressingMode7Bit, "\\_SB.PCI0.GIP0.I2C_", 0, ResourceConsumer,,)
  31   })
  32
  33   //
  34   // Check if TPM present.
  35   //
  36   Method (_STA, 0)
  37   {
  38     if (LEqual (TPMP, 0))
  39     {
  40       return (0)
  41     }
  42     Return (0x0f)
  43   }
  44
  45 }