diff options
Diffstat (limited to 'ReferenceCode/Chipset/LynxPoint/Reset/Pei/PchReset.c')
| -rw-r--r-- | ReferenceCode/Chipset/LynxPoint/Reset/Pei/PchReset.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/LynxPoint/Reset/Pei/PchReset.c b/ReferenceCode/Chipset/LynxPoint/Reset/Pei/PchReset.c new file mode 100644 index 0000000..5993d67 --- /dev/null +++ b/ReferenceCode/Chipset/LynxPoint/Reset/Pei/PchReset.c @@ -0,0 +1,134 @@ +/** @file + PCH RESET PEIM DRIVER. + +@copyright + Copyright (c) 2011 - 2012 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 "PchReset.h" + +/** + Installs PCH RESET PPI + + @param[in] FfsHeader Not used. + @param[in] PeiServices General purpose services available to every PEIM. + + @retval EFI_SUCCESS PCH SPI PPI is installed successfully + @retval EFI_OUT_OF_RESOURCES Can't allocate pool +**/ +EFI_STATUS +InstallPchReset ( + IN EFI_FFS_FILE_HEADER *FfsHeader, + IN EFI_PEI_SERVICES **PeiServices + ) +{ + EFI_STATUS Status; + PEI_PCH_RESET_INSTANCE *PeiPchResetInstance; + PCH_RESET_INSTANCE *PchResetInstance; + + DEBUG ((EFI_D_INFO, "InstallPchReset() Start\n")); + + PeiPchResetInstance = (PEI_PCH_RESET_INSTANCE *) AllocateZeroPool (sizeof (PEI_PCH_RESET_INSTANCE)); + if (NULL == PeiPchResetInstance) { + return EFI_OUT_OF_RESOURCES; + } + + PchResetInstance = &(PeiPchResetInstance->PchResetInstance); + PchResetProtocolConstructor (PchResetInstance); + + PeiPchResetInstance->PpiDescriptor.Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST; + PeiPchResetInstance->PpiDescriptor.Guid = &gPchResetPpiGuid; + PeiPchResetInstance->PpiDescriptor.Ppi = &(PchResetInstance->PchResetProtocol); + + /// + /// Install the PCH RESET PPI + /// + Status = (**PeiServices).InstallPpi (PeiServices, &PeiPchResetInstance->PpiDescriptor); + ASSERT_EFI_ERROR (Status); + + DEBUG ((EFI_D_INFO, "PCH RESET PPI Installed\n")); + + DEBUG ((EFI_D_INFO, "InstallPchReset() End\n")); + + return Status; +} + +/** + Execute call back function for Pch Reset. + + @param[in] PchResetType Pch Reset Types which includes PowerCycle, Globalreset. + + @retval EFI_SUCCESS The callback function has been done successfully + @exception EFI_UNSUPPORTED Do not do any reset from PCH +**/ +EFI_STATUS +PchResetCallback ( + IN PCH_RESET_TYPE PchResetType + ) +{ + EFI_STATUS Status; + UINTN Instance; + PCH_RESET_CALLBACK_PPI *PchResetCallbackPpi; + + if ((PchResetType == GlobalReset) || (PchResetType == GlobalResetWithEc)) { + /// + /// After MRC is done, DRAM Init Done message will be sent to ME FW. + /// + Status = PeiServicesLocatePpi ( + &gEfiPeiMemoryDiscoveredPpiGuid, + 0, + NULL, + NULL + ); + + if (Status == EFI_SUCCESS) { + /// + /// After sending DRAM Init Done to ME FW, please do the global reset through HECI. + /// + DEBUG ((EFI_D_ERROR, "Please do the global reset through HECI \n")); + return EFI_UNSUPPORTED; + } + } + + Instance = 0; + + do { + /// + /// Those drivers that need to install Pch Reset Callback Ppi have the responsibility + /// to make sure themselves execute before Pch Reset PEI driver. + /// + Status = PeiServicesLocatePpi ( + &gPchResetCallbackPpiGuid, + Instance, + NULL, + (VOID**) &PchResetCallbackPpi + ); + + if (Status == EFI_SUCCESS) { + PchResetCallbackPpi->ResetCallback (PchResetType); + } else { + if ((Instance == 0) && (Status == EFI_NOT_FOUND)) { + DEBUG ((EFI_D_ERROR | EFI_D_INFO, "None of Pch Reset Callback Ppi is found .\n")); + } else { + DEBUG ((EFI_D_INFO, "Failed to locate Pch Reset Callback Ppi.\n")); + } + } + + Instance++; + } while (Status != EFI_NOT_FOUND); + + return EFI_SUCCESS; +}
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