TbtDxe.c 8.3 KB

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  1. /** @file
  2. Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
  3. SPDX-License-Identifier: BSD-2-Clause-Patent
  4. **/
  5. #include <Uefi.h>
  6. #include <Library/BaseMemoryLib.h>
  7. #include <Library/TbtCommonLib.h>
  8. #include <Library/DxeTbtPolicyLib.h>
  9. #include <TbtBoardInfo.h>
  10. #include <Protocol/DxeTbtPolicy.h>
  11. #include <Protocol/TbtNvsArea.h>
  12. #include <Library/DebugLib.h>
  13. #include <Library/HobLib.h>
  14. #include <Library/UefiBootServicesTableLib.h>
  15. #include <Library/UefiRuntimeServicesTableLib.h>
  16. #include <Library/UefiLib.h>
  17. #include <Uefi/UefiSpec.h>
  18. #include <Library/PcdLib.h>
  19. #include <Library/AslUpdateLib.h>
  20. GLOBAL_REMOVE_IF_UNREFERENCED TBT_NVS_AREA_PROTOCOL mTbtNvsAreaProtocol;
  21. GLOBAL_REMOVE_IF_UNREFERENCED TBT_INFO_HOB *gTbtInfoHob = NULL;
  22. /**
  23. TBT NVS Area Initialize
  24. **/
  25. VOID
  26. TbtNvsAreaInit (
  27. IN VOID **mTbtNvsAreaPtr
  28. )
  29. {
  30. UINTN Pages;
  31. EFI_PHYSICAL_ADDRESS Address;
  32. EFI_STATUS Status;
  33. TBT_NVS_AREA_PROTOCOL *TbtNvsAreaProtocol;
  34. DXE_TBT_POLICY_PROTOCOL *DxeTbtConfig;
  35. DEBUG ((DEBUG_INFO, "TbtNvsAreaInit Start\n"));
  36. Status = gBS->LocateProtocol (
  37. &gDxeTbtPolicyProtocolGuid,
  38. NULL,
  39. (VOID **) &DxeTbtConfig
  40. );
  41. ASSERT_EFI_ERROR (Status);
  42. Pages = EFI_SIZE_TO_PAGES (sizeof (TBT_NVS_AREA));
  43. Address = 0xffffffff; // allocate address below 4G.
  44. Status = gBS->AllocatePages (
  45. AllocateMaxAddress,
  46. EfiACPIMemoryNVS,
  47. Pages,
  48. &Address
  49. );
  50. ASSERT_EFI_ERROR (Status);
  51. *mTbtNvsAreaPtr = (VOID *) (UINTN) Address;
  52. SetMem (*mTbtNvsAreaPtr, sizeof (TBT_NVS_AREA), 0);
  53. //
  54. // TBTNvsAreaProtocol default value init here
  55. //
  56. TbtNvsAreaProtocol = (TBT_NVS_AREA_PROTOCOL *) &Address;
  57. //
  58. // Initialize default values
  59. //
  60. TbtNvsAreaProtocol->Area->WAKFinished = 0;
  61. TbtNvsAreaProtocol->Area->DiscreteTbtSupport = ((gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn == 1 ) ? TRUE : FALSE);
  62. TbtNvsAreaProtocol->Area->TbtAcpiRemovalSupport = 0;
  63. TbtNvsAreaProtocol->Area->TbtGpioFilter = (UINT8) DxeTbtConfig->TbtCommonConfig.Gpio5Filter;
  64. // TbtNvsAreaProtocol->Area->TrOsup = (UINT8) DxeTbtConfig->TbtCommonConfig.TrA0OsupWa;
  65. TbtNvsAreaProtocol->Area->TbtFrcPwrEn = gTbtInfoHob->DTbtCommonConfig.Gpio3ForcePwr;
  66. TbtNvsAreaProtocol->Area->TbtAspm = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtAspm;
  67. // TbtNvsAreaProtocol->Area->TbtL1SubStates = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtL1SubStates;
  68. TbtNvsAreaProtocol->Area->TbtSetClkReq = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtSetClkReq;
  69. TbtNvsAreaProtocol->Area->TbtLtr = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtLtr;
  70. // TbtNvsAreaProtocol->Area->TbtPtm = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtPtm;
  71. TbtNvsAreaProtocol->Area->TbtWakeupSupport = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtWakeupSupport;
  72. TbtNvsAreaProtocol->Area->TbtAcDcSwitch = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtAcDcSwitch;
  73. TbtNvsAreaProtocol->Area->Rtd3TbtSupport = (UINT8) DxeTbtConfig->TbtCommonConfig.Rtd3Tbt; // TBT RTD3 Enable.
  74. TbtNvsAreaProtocol->Area->Rtd3TbtOffDelay = (UINT16) DxeTbtConfig->TbtCommonConfig.Rtd3TbtOffDelay; // TBT RTD3 Off delay in ms.
  75. TbtNvsAreaProtocol->Area->Rtd3TbtClkReq = (UINT8) DxeTbtConfig->TbtCommonConfig.Rtd3TbtClkReq; // TBT RTD3 ClkReq Mask Enable.
  76. TbtNvsAreaProtocol->Area->Rtd3TbtClkReqDelay = (UINT16) DxeTbtConfig->TbtCommonConfig.Rtd3TbtClkReqDelay; // TBT RTD3 ClkReq mask delay in ms.
  77. TbtNvsAreaProtocol->Area->TbtWin10Support = (UINT8) DxeTbtConfig->TbtCommonConfig.Win10Support; // TBT FW Execution Mode
  78. //
  79. // DTBT Controller 1
  80. //
  81. TbtNvsAreaProtocol->Area->DTbtControllerEn0 = gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn;
  82. TbtNvsAreaProtocol->Area->RootportSelected0 = gTbtInfoHob-> DTbtControllerConfig.PcieRpNumber;
  83. TbtNvsAreaProtocol->Area->RootportSelected0Type = gTbtInfoHob-> DTbtControllerConfig.Type;
  84. TbtNvsAreaProtocol->Area->RootportEnabled0 = gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn;
  85. TbtNvsAreaProtocol->Area->TbtFrcPwrGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.ForcePwrGpio.GpioPad;
  86. TbtNvsAreaProtocol->Area->TbtFrcPwrGpioLevel0 = gTbtInfoHob-> DTbtControllerConfig.ForcePwrGpio.GpioLevel;
  87. TbtNvsAreaProtocol->Area->TbtCioPlugEventGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.GpioPad;
  88. TbtNvsAreaProtocol->Area->TbtPcieRstGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.PcieRstGpio.GpioPad;
  89. TbtNvsAreaProtocol->Area->TbtPcieRstGpioLevel0 = gTbtInfoHob-> DTbtControllerConfig.PcieRstGpio.GpioLevel;
  90. TbtNvsAreaProtocol->Area->TBtCommonGpioSupport = gTbtInfoHob->DTbtCommonConfig.DTbtSharedGpioConfiguration;
  91. DEBUG ((DEBUG_INFO, "TbtNvsAreaInit End\n"));
  92. }
  93. /**
  94. This function gets registered as a callback to patch TBT ASL code
  95. @param[in] Event - A pointer to the Event that triggered the callback.
  96. @param[in] Context - A pointer to private data registered with the callback function.
  97. can we put this also in read me
  98. **/
  99. VOID
  100. EFIAPI
  101. TbtAcpiEndOfDxeCallback (
  102. IN EFI_EVENT Event,
  103. IN VOID *Context
  104. )
  105. {
  106. EFI_STATUS Status;
  107. UINT32 Address;
  108. UINT16 Length;
  109. UINT32 Signature;
  110. Status = InitializeAslUpdateLib ();
  111. ASSERT_EFI_ERROR (Status);
  112. Address = (UINT32) (UINTN) mTbtNvsAreaProtocol.Area;
  113. Length = (UINT16) sizeof (TBT_NVS_AREA);
  114. DEBUG ((DEBUG_INFO, "Patch TBT NvsAreaAddress: TBT NVS Address %x Length %x\n", Address, Length));
  115. Status = UpdateNameAslCode (SIGNATURE_32 ('T','N','V','B'), &Address, sizeof (Address));
  116. ASSERT_EFI_ERROR (Status);
  117. Status = UpdateNameAslCode (SIGNATURE_32 ('T','N','V','L'), &Length, sizeof (Length));
  118. ASSERT_EFI_ERROR (Status);
  119. if (gTbtInfoHob != NULL) {
  120. if (gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn == 1) {
  121. if (gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.AcpiGpeSignaturePorting == TRUE) {
  122. DEBUG ((DEBUG_INFO, "Patch ATBT Method Name\n"));
  123. Signature = gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.AcpiGpeSignature;
  124. Status = UpdateNameAslCode (SIGNATURE_32 ('A','T','B','T'), &Signature, sizeof (Signature));
  125. ASSERT_EFI_ERROR (Status);
  126. }
  127. }
  128. }
  129. return;
  130. }
  131. /**
  132. Initialize Thunderbolt(TM) SSDT ACPI tables
  133. @retval EFI_SUCCESS ACPI tables are initialized successfully
  134. @retval EFI_NOT_FOUND ACPI tables not found
  135. **/
  136. EFI_STATUS
  137. EFIAPI
  138. TbtDxeEntryPoint (
  139. IN EFI_HANDLE ImageHandle,
  140. IN EFI_SYSTEM_TABLE *SystemTable
  141. )
  142. {
  143. EFI_STATUS Status;
  144. EFI_HANDLE Handle;
  145. // EFI_EVENT EndOfDxeEvent;
  146. DEBUG ((DEBUG_INFO, "TbtDxeEntryPoint \n"));
  147. //
  148. // Get TBT INFO HOB
  149. //
  150. gTbtInfoHob = (TBT_INFO_HOB *) GetFirstGuidHob (&gTbtInfoHobGuid);
  151. if (gTbtInfoHob == NULL) {
  152. return EFI_NOT_FOUND;
  153. }
  154. InstallTbtPolicy (ImageHandle);
  155. //
  156. // Update DXE TBT Policy
  157. //
  158. UpdateTbtPolicyCallback ();
  159. //
  160. // Print DXE TBT Policy
  161. //
  162. TbtPrintDxePolicyConfig ();
  163. //
  164. // Initialize Tbt Nvs Area
  165. //
  166. TbtNvsAreaInit ((VOID **) &mTbtNvsAreaProtocol.Area);
  167. //
  168. // [ACPI] Thunderbolt ACPI table
  169. //
  170. Handle = NULL;
  171. Status = gBS->InstallMultipleProtocolInterfaces (
  172. &Handle,
  173. &gTbtNvsAreaProtocolGuid,
  174. &mTbtNvsAreaProtocol,
  175. NULL
  176. );
  177. ASSERT_EFI_ERROR (Status);
  178. //
  179. // Register an end of DXE event for TBT ACPI to do some patch can be put as description
  180. //
  181. /**
  182. Status = gBS->CreateEventEx (
  183. EVT_NOTIFY_SIGNAL,
  184. TPL_CALLBACK,
  185. TbtAcpiEndOfDxeCallback,
  186. NULL,
  187. &gEfiEndOfDxeEventGroupGuid,
  188. &EndOfDxeEvent
  189. );
  190. ASSERT_EFI_ERROR (Status);
  191. **/
  192. return EFI_SUCCESS;
  193. }