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Diffstat (limited to 'ReferenceCode/ME/SampleCode/PlatformReset/RuntimeDxe/PlatformReset.c')
| -rw-r--r-- | ReferenceCode/ME/SampleCode/PlatformReset/RuntimeDxe/PlatformReset.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/ReferenceCode/ME/SampleCode/PlatformReset/RuntimeDxe/PlatformReset.c b/ReferenceCode/ME/SampleCode/PlatformReset/RuntimeDxe/PlatformReset.c new file mode 100644 index 0000000..55cdf11 --- /dev/null +++ b/ReferenceCode/ME/SampleCode/PlatformReset/RuntimeDxe/PlatformReset.c @@ -0,0 +1,168 @@ +/** @file + Provide the ResetSystem AP + +@copyright + Copyright (c) 2011 - 2013 Intel Corporation. All rights reserved + This software and associated documentation (if any) is furnished + under a license and may only be used or copied in accordance + with the terms of the license. Except as permitted by such + license, no part of this software or documentation may be + reproduced, stored in a retrieval system, or transmitted in any + form or by any means without the express written consent of + Intel Corporation. + + This file contains an 'Intel Peripheral Driver' and uniquely + identified as "Intel Reference Module" and is + licensed for Intel CPUs and chipsets under the terms of your + license agreement with Intel or your vendor. This file may + be modified by the user, subject to additional terms of the + license agreement +**/ +#include "PlatformReset.h" +#include "MeLib.h" +PCH_RESET_PROTOCOL *mPchReset; + +/** + Reset the system + + @param[in] ResetType Warm or cold + @param[in] ResetStatus Possible cause of reset + @param[in] DataSize Size of ResetData in bytes + @param[in] ResetData Optional Unicode string + + @retval Does not return if the reset takes place. +**/ +VOID +EFIAPI +PlatformResetSystem ( + IN EFI_RESET_TYPE ResetType, + IN EFI_STATUS ResetStatus, + IN UINTN DataSize, + IN CHAR16 *ResetData OPTIONAL + ) +{ + EFI_STATUS Status; + ME_PLATFORM_GET_RESET_TYPE_PROTOCOL *MePlatformGetResetType; + PCH_RESET_TYPE OverridePchResetType; + PCH_RESET_TYPE PchResetType; + UINTN NumberMePlatformGetResetHandles; + EFI_HANDLE *MePlatformGetResetHandles; + UINTN Index; + + PchResetType = ResetType; + OverridePchResetType = ResetType; + + if (!EfiAtRuntime ()) { + Status = gBS->LocateHandleBuffer ( + ByProtocol, + &gMePlatformGetResetTypeGuid, + NULL, + &NumberMePlatformGetResetHandles, + &MePlatformGetResetHandles + ); + if (!EFI_ERROR (Status)) { + for (Index = 0; Index < NumberMePlatformGetResetHandles; Index++) { + Status = gBS->HandleProtocol ( + MePlatformGetResetHandles[Index], + &gMePlatformGetResetTypeGuid, + (VOID **) &MePlatformGetResetType + ); + if (!EFI_ERROR (Status)) { + PchResetType = MePlatformGetResetType->GetResetType (ResetType); + DEBUG ((EFI_D_INFO, "Returned Pch ResetType is: %x\n", PchResetType)); + if (PchResetType >= MaxRestReq) { + DEBUG ((EFI_D_ERROR, "Platform Reset failed, invalid parameter\n")); + ASSERT (FALSE); + } + if (OverridePchResetType < PchResetType) { + DEBUG ((EFI_D_INFO, "Previous Pch ResetType is: %x\n", OverridePchResetType)); + OverridePchResetType = PchResetType; + } + DEBUG ((EFI_D_INFO, "Current Pch ResetType is: %x\n", OverridePchResetType)); + } + } + } + PchResetType = OverridePchResetType; + if ((PchResetType == GlobalReset) || (PchResetType == GlobalResetWithEc)) { + /// + /// Let ME do global reset if Me Fw is available + /// + Status = HeciSendCbmResetRequest (CBM_RR_REQ_ORIGIN_BIOS_POST, CBM_HRR_GLOBAL_RESET); + if (!EFI_ERROR (Status)) { + /// + /// ME Global Reset should fail after EOP is sent. + /// Go to use PCH Reset + /// + gBS->Stall (1000000); + } + } + } + + mPchReset->Reset (mPchReset, PchResetType); + + ASSERT (FALSE); +} + +/** + Entry point of Platform Reset driver. + + @param[in] ImageHandle Standard entry point parameter + @param[in] SystemTable Standard entry point parameter + + @retval EFI_SUCCESS Reset RT protocol installed + @retval All other error conditions encountered result in an ASSERT +**/ +EFI_STATUS +InitializePlatformReset ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_HANDLE Handle; + EFI_STATUS Status; + + Status = gBS->LocateProtocol (&gPchResetProtocolGuid, NULL, (VOID **) &mPchReset); + ASSERT_EFI_ERROR (Status); + + /// + /// Make sure the Reset Architectural Protocol is not already installed in the system + /// + ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiResetArchProtocolGuid); + + /// + /// Hook the runtime service table + /// + SystemTable->RuntimeServices->ResetSystem = PlatformResetSystem; + + /// + /// Now install the Reset RT AP on a new handle + /// + Handle = NULL; + Status = gBS->InstallMultipleProtocolInterfaces ( + &Handle, + &gEfiResetArchProtocolGuid, + NULL, + NULL + ); + ASSERT_EFI_ERROR (Status); + + return Status; +} + +/** + Fixup internal data pointers so that the services can be called in virtual mode. + + @param[in] Event The event registered. + @param[in] Context Event context. Not used in this event handler. + + @retval None +**/ +EFI_RUNTIMESERVICE +VOID +PchResetVirtualddressChangeEvent ( + IN EFI_EVENT Event, + IN VOID *Context + ) +{ + gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &mPchReset); +} |