TbtDxe.c 8.4 KB

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  1. /** @file
  2. Thunderbolt initialization in DXE.
  3. Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
  4. SPDX-License-Identifier: BSD-2-Clause-Patent
  5. **/
  6. #include <Uefi.h>
  7. #include <Library/BaseMemoryLib.h>
  8. #include <Library/TbtCommonLib.h>
  9. #include <Library/DxeTbtPolicyLib.h>
  10. #include <TbtBoardInfo.h>
  11. #include <Protocol/DxeTbtPolicy.h>
  12. #include <Protocol/TbtNvsArea.h>
  13. #include <Library/DebugLib.h>
  14. #include <Library/HobLib.h>
  15. #include <Library/UefiBootServicesTableLib.h>
  16. #include <Library/UefiRuntimeServicesTableLib.h>
  17. #include <Library/UefiLib.h>
  18. #include <Uefi/UefiSpec.h>
  19. #include <Library/PcdLib.h>
  20. #include <Library/AslUpdateLib.h>
  21. GLOBAL_REMOVE_IF_UNREFERENCED TBT_NVS_AREA_PROTOCOL mTbtNvsAreaProtocol;
  22. GLOBAL_REMOVE_IF_UNREFERENCED TBT_INFO_HOB *gTbtInfoHob = NULL;
  23. /**
  24. TBT NVS Area Initialize
  25. **/
  26. VOID
  27. TbtNvsAreaInit (
  28. IN VOID **mTbtNvsAreaPtr
  29. )
  30. {
  31. UINTN Pages;
  32. EFI_PHYSICAL_ADDRESS Address;
  33. EFI_STATUS Status;
  34. TBT_NVS_AREA_PROTOCOL *TbtNvsAreaProtocol;
  35. DXE_TBT_POLICY_PROTOCOL *DxeTbtConfig;
  36. DEBUG ((DEBUG_INFO, "TbtNvsAreaInit Start\n"));
  37. Status = gBS->LocateProtocol (
  38. &gDxeTbtPolicyProtocolGuid,
  39. NULL,
  40. (VOID **) &DxeTbtConfig
  41. );
  42. ASSERT_EFI_ERROR (Status);
  43. Pages = EFI_SIZE_TO_PAGES (sizeof (TBT_NVS_AREA));
  44. Address = 0xffffffff; // allocate address below 4G.
  45. Status = gBS->AllocatePages (
  46. AllocateMaxAddress,
  47. EfiACPIMemoryNVS,
  48. Pages,
  49. &Address
  50. );
  51. ASSERT_EFI_ERROR (Status);
  52. *mTbtNvsAreaPtr = (VOID *) (UINTN) Address;
  53. SetMem (*mTbtNvsAreaPtr, sizeof (TBT_NVS_AREA), 0);
  54. //
  55. // TBTNvsAreaProtocol default value init here
  56. //
  57. TbtNvsAreaProtocol = (TBT_NVS_AREA_PROTOCOL *) &Address;
  58. //
  59. // Initialize default values
  60. //
  61. TbtNvsAreaProtocol->Area->WAKFinished = 0;
  62. TbtNvsAreaProtocol->Area->DiscreteTbtSupport = ((gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn == 1 ) ? TRUE : FALSE);
  63. TbtNvsAreaProtocol->Area->TbtAcpiRemovalSupport = 0;
  64. TbtNvsAreaProtocol->Area->TbtGpioFilter = (UINT8) DxeTbtConfig->TbtCommonConfig.Gpio5Filter;
  65. // TbtNvsAreaProtocol->Area->TrOsup = (UINT8) DxeTbtConfig->TbtCommonConfig.TrA0OsupWa;
  66. TbtNvsAreaProtocol->Area->TbtFrcPwrEn = gTbtInfoHob->DTbtCommonConfig.Gpio3ForcePwr;
  67. TbtNvsAreaProtocol->Area->TbtAspm = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtAspm;
  68. // TbtNvsAreaProtocol->Area->TbtL1SubStates = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtL1SubStates;
  69. TbtNvsAreaProtocol->Area->TbtSetClkReq = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtSetClkReq;
  70. TbtNvsAreaProtocol->Area->TbtLtr = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtLtr;
  71. // TbtNvsAreaProtocol->Area->TbtPtm = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtPtm;
  72. TbtNvsAreaProtocol->Area->TbtWakeupSupport = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtWakeupSupport;
  73. TbtNvsAreaProtocol->Area->TbtAcDcSwitch = (UINT8) DxeTbtConfig->TbtCommonConfig.TbtAcDcSwitch;
  74. TbtNvsAreaProtocol->Area->Rtd3TbtSupport = (UINT8) DxeTbtConfig->TbtCommonConfig.Rtd3Tbt; // TBT RTD3 Enable.
  75. TbtNvsAreaProtocol->Area->Rtd3TbtOffDelay = (UINT16) DxeTbtConfig->TbtCommonConfig.Rtd3TbtOffDelay; // TBT RTD3 Off delay in ms.
  76. TbtNvsAreaProtocol->Area->Rtd3TbtClkReq = (UINT8) DxeTbtConfig->TbtCommonConfig.Rtd3TbtClkReq; // TBT RTD3 ClkReq Mask Enable.
  77. TbtNvsAreaProtocol->Area->Rtd3TbtClkReqDelay = (UINT16) DxeTbtConfig->TbtCommonConfig.Rtd3TbtClkReqDelay; // TBT RTD3 ClkReq mask delay in ms.
  78. TbtNvsAreaProtocol->Area->TbtWin10Support = (UINT8) DxeTbtConfig->TbtCommonConfig.Win10Support; // TBT FW Execution Mode
  79. //
  80. // DTBT Controller 1
  81. //
  82. TbtNvsAreaProtocol->Area->DTbtControllerEn0 = gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn;
  83. TbtNvsAreaProtocol->Area->RootportSelected0 = gTbtInfoHob-> DTbtControllerConfig.PcieRpNumber;
  84. TbtNvsAreaProtocol->Area->RootportSelected0Type = gTbtInfoHob-> DTbtControllerConfig.Type;
  85. TbtNvsAreaProtocol->Area->RootportEnabled0 = gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn;
  86. TbtNvsAreaProtocol->Area->TbtFrcPwrGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.ForcePwrGpio.GpioPad;
  87. TbtNvsAreaProtocol->Area->TbtFrcPwrGpioLevel0 = gTbtInfoHob-> DTbtControllerConfig.ForcePwrGpio.GpioLevel;
  88. TbtNvsAreaProtocol->Area->TbtCioPlugEventGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.GpioPad;
  89. TbtNvsAreaProtocol->Area->TbtPcieRstGpioNo0 = gTbtInfoHob-> DTbtControllerConfig.PcieRstGpio.GpioPad;
  90. TbtNvsAreaProtocol->Area->TbtPcieRstGpioLevel0 = gTbtInfoHob-> DTbtControllerConfig.PcieRstGpio.GpioLevel;
  91. TbtNvsAreaProtocol->Area->TBtCommonGpioSupport = gTbtInfoHob->DTbtCommonConfig.DTbtSharedGpioConfiguration;
  92. DEBUG ((DEBUG_INFO, "TbtNvsAreaInit End\n"));
  93. }
  94. /**
  95. This function gets registered as a callback to patch TBT ASL code
  96. @param[in] Event - A pointer to the Event that triggered the callback.
  97. @param[in] Context - A pointer to private data registered with the callback function.
  98. can we put this also in read me
  99. **/
  100. VOID
  101. EFIAPI
  102. TbtAcpiEndOfDxeCallback (
  103. IN EFI_EVENT Event,
  104. IN VOID *Context
  105. )
  106. {
  107. EFI_STATUS Status;
  108. UINT32 Address;
  109. UINT16 Length;
  110. UINT32 Signature;
  111. Status = InitializeAslUpdateLib ();
  112. ASSERT_EFI_ERROR (Status);
  113. Address = (UINT32) (UINTN) mTbtNvsAreaProtocol.Area;
  114. Length = (UINT16) sizeof (TBT_NVS_AREA);
  115. DEBUG ((DEBUG_INFO, "Patch TBT NvsAreaAddress: TBT NVS Address %x Length %x\n", Address, Length));
  116. Status = UpdateNameAslCode (SIGNATURE_32 ('T','N','V','B'), &Address, sizeof (Address));
  117. ASSERT_EFI_ERROR (Status);
  118. Status = UpdateNameAslCode (SIGNATURE_32 ('T','N','V','L'), &Length, sizeof (Length));
  119. ASSERT_EFI_ERROR (Status);
  120. if (gTbtInfoHob != NULL) {
  121. if (gTbtInfoHob-> DTbtControllerConfig.DTbtControllerEn == 1) {
  122. if (gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.AcpiGpeSignaturePorting == TRUE) {
  123. DEBUG ((DEBUG_INFO, "Patch ATBT Method Name\n"));
  124. Signature = gTbtInfoHob-> DTbtControllerConfig.CioPlugEventGpio.AcpiGpeSignature;
  125. Status = UpdateNameAslCode (SIGNATURE_32 ('A','T','B','T'), &Signature, sizeof (Signature));
  126. ASSERT_EFI_ERROR (Status);
  127. }
  128. }
  129. }
  130. return;
  131. }
  132. /**
  133. Initialize Thunderbolt(TM) SSDT ACPI tables
  134. @retval EFI_SUCCESS ACPI tables are initialized successfully
  135. @retval EFI_NOT_FOUND ACPI tables not found
  136. **/
  137. EFI_STATUS
  138. EFIAPI
  139. TbtDxeEntryPoint (
  140. IN EFI_HANDLE ImageHandle,
  141. IN EFI_SYSTEM_TABLE *SystemTable
  142. )
  143. {
  144. EFI_STATUS Status;
  145. EFI_HANDLE Handle;
  146. // EFI_EVENT EndOfDxeEvent;
  147. DEBUG ((DEBUG_INFO, "TbtDxeEntryPoint \n"));
  148. //
  149. // Get TBT INFO HOB
  150. //
  151. gTbtInfoHob = (TBT_INFO_HOB *) GetFirstGuidHob (&gTbtInfoHobGuid);
  152. if (gTbtInfoHob == NULL) {
  153. return EFI_NOT_FOUND;
  154. }
  155. InstallTbtPolicy (ImageHandle);
  156. //
  157. // Update DXE TBT Policy
  158. //
  159. UpdateTbtPolicyCallback ();
  160. //
  161. // Print DXE TBT Policy
  162. //
  163. TbtPrintDxePolicyConfig ();
  164. //
  165. // Initialize Tbt Nvs Area
  166. //
  167. TbtNvsAreaInit ((VOID **) &mTbtNvsAreaProtocol.Area);
  168. //
  169. // [ACPI] Thunderbolt ACPI table
  170. //
  171. Handle = NULL;
  172. Status = gBS->InstallMultipleProtocolInterfaces (
  173. &Handle,
  174. &gTbtNvsAreaProtocolGuid,
  175. &mTbtNvsAreaProtocol,
  176. NULL
  177. );
  178. ASSERT_EFI_ERROR (Status);
  179. //
  180. // Register an end of DXE event for TBT ACPI to do some patch can be put as description
  181. //
  182. /**
  183. Status = gBS->CreateEventEx (
  184. EVT_NOTIFY_SIGNAL,
  185. TPL_CALLBACK,
  186. TbtAcpiEndOfDxeCallback,
  187. NULL,
  188. &gEfiEndOfDxeEventGroupGuid,
  189. &EndOfDxeEvent
  190. );
  191. ASSERT_EFI_ERROR (Status);
  192. **/
  193. return EFI_SUCCESS;
  194. }