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Diffstat (limited to 'ReferenceCode/Chipset/LynxPoint/SmmControl/Pei/SmmControlDriver.c')
| -rw-r--r-- | ReferenceCode/Chipset/LynxPoint/SmmControl/Pei/SmmControlDriver.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/LynxPoint/SmmControl/Pei/SmmControlDriver.c b/ReferenceCode/Chipset/LynxPoint/SmmControl/Pei/SmmControlDriver.c new file mode 100644 index 0000000..a4638e8 --- /dev/null +++ b/ReferenceCode/Chipset/LynxPoint/SmmControl/Pei/SmmControlDriver.c @@ -0,0 +1,282 @@ +/** @file + This is the driver that publishes the SMM Control Ppi. + +@copyright + Copyright (c) 1999 - 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 "SmmControlDriver.h" + +EFI_GUID mPeiSmmControlPpiGuid = PEI_SMM_CONTROL_PPI_GUID; + +STATIC PEI_SMM_CONTROL_PPI mSmmControlPpi = { + PeiActivate, + PeiDeactivate +}; + +STATIC EFI_PEI_PPI_DESCRIPTOR mPpiList = { + (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), + &mPeiSmmControlPpiGuid, + &mSmmControlPpi +}; + +EFI_PEIM_ENTRY_POINT (SmmControlPeiDriverEntryInit) + +/** + This is the constructor for the SMM Control ppi + + @param[in] FfsHeader FfsHeader. + @param[in] PeiServices General purpose services available to every PEIM. + + @retval EFI_STATUS Results of the installation of the SMM Control Ppi +**/ +EFI_STATUS +EFIAPI +SmmControlPeiDriverEntryInit ( + IN EFI_FFS_FILE_HEADER *FfsHeader, + IN EFI_PEI_SERVICES **PeiServices + ) +{ + EFI_STATUS Status; + + Status = (**PeiServices).InstallPpi (PeiServices, &mPpiList); + ASSERT_EFI_ERROR (Status); + + return Status; +} + +/** + Trigger the software SMI + + @param[in] Data The value to be set on the software SMI data port + + @retval EFI_SUCCESS Function completes successfully +**/ +EFI_STATUS +EFIAPI +SmmTrigger ( + IN UINT8 Data + ) +{ + UINT32 OutputData; + UINT32 OutputPort; + UINT32 PmBase; + + PmBase = MmioRead32 ( + MmPciAddress (0, + DEFAULT_PCI_BUS_NUMBER_PCH, + PCI_DEVICE_NUMBER_PCH_LPC, + PCI_FUNCTION_NUMBER_PCH_LPC, + R_PCH_LPC_ACPI_BASE) + ) & B_PCH_LPC_ACPI_BASE_BAR; + + /// + /// Enable the APMC SMI + /// + OutputPort = PmBase + R_PCH_SMI_EN; + OutputData = IoRead32 ((UINTN) OutputPort); + OutputData |= (B_PCH_SMI_EN_APMC | B_PCH_SMI_EN_GBL_SMI); + DEBUG ( + (EFI_D_INFO, + "The SMI Control Port at address %x will be written to %x.\n", + OutputPort, + OutputData) + ); + IoWrite32 ( + (UINTN) OutputPort, + (UINT32) (OutputData) + ); + + OutputPort = R_PCH_APM_CNT; + OutputData = Data; + + /// + /// Generate the APMC SMI + /// + IoWrite8 ( + (UINTN) OutputPort, + (UINT8) (OutputData) + ); + + return EFI_SUCCESS; +} + +/** + Clear the SMI status + + @param[in] None + + @retval EFI_SUCCESS The function completes successfully + @retval EFI_DEVICE_ERROR Something error occurred +**/ +EFI_STATUS +EFIAPI +SmmClear ( + VOID + ) +{ + UINT32 OutputData; + UINT32 OutputPort; + UINT32 PmBase; + + PmBase = MmioRead32 ( + MmPciAddress (0, + DEFAULT_PCI_BUS_NUMBER_PCH, + PCI_DEVICE_NUMBER_PCH_LPC, + PCI_FUNCTION_NUMBER_PCH_LPC, + R_PCH_LPC_ACPI_BASE) + ) & B_PCH_LPC_ACPI_BASE_BAR; + + /// + /// Clear the Power Button Override Status Bit, it gates EOS from being set. + /// + OutputPort = PmBase + R_PCH_ACPI_PM1_STS; + OutputData = B_PCH_ACPI_PM1_STS_PRBTNOR; + DEBUG ( + (EFI_D_INFO, + "The PM1 Status Port at address %x will be written to %x.\n", + OutputPort, + OutputData) + ); + IoWrite16 ( + (UINTN) OutputPort, + (UINT16) (OutputData) + ); + + /// + /// Clear the APM SMI Status Bit + /// + OutputPort = PmBase + R_PCH_SMI_STS; + OutputData = B_PCH_SMI_STS_APM; + DEBUG ( + (EFI_D_INFO, + "The SMI Status Port at address %x will be written to %x.\n", + OutputPort, + OutputData) + ); + IoWrite32 ( + (UINTN) OutputPort, + (UINT32) (OutputData) + ); + + /// + /// Set the EOS Bit + /// + OutputPort = PmBase + R_PCH_SMI_EN; + OutputData = IoRead32 ((UINTN) OutputPort); + OutputData |= B_PCH_SMI_EN_EOS; + DEBUG ( + (EFI_D_INFO, + "The SMI Control Port at address %x will be written to %x.\n", + OutputPort, + OutputData) + ); + IoWrite32 ( + (UINTN) OutputPort, + (UINT32) (OutputData) + ); + + /// + /// If the EOS bit did not get set, then we've got a problem. + /// + DEBUG_CODE ( + OutputData = IoRead32 ((UINTN) OutputPort); + if ((OutputData & B_PCH_SMI_EN_EOS) != B_PCH_SMI_EN_EOS) { + DEBUG ((EFI_D_ERROR, "Bugger, EOS did not get set!\n")); + return EFI_DEVICE_ERROR; + } + ); + + return EFI_SUCCESS; +} + +/** + This routine generates an SMI + + @param[in] PeiServices General purpose services available to every PEIM. + @param[in] This The EFI SMM Control ppi instance + @param[in, out] ArgumentBuffer The buffer of argument + @param[in, out] ArgumentBufferSize The size of the argument buffer + @param[in] Periodic Periodic or not + @param[in] ActivationInterval Interval of periodic SMI + + @retval EFI Status Describing the result of the operation + @retval EFI_INVALID_PARAMETER Some parameter value passed is not supported +**/ +EFI_STATUS +EFIAPI +PeiActivate ( + IN EFI_PEI_SERVICES **PeiServices, + IN PEI_SMM_CONTROL_PPI *This, + IN OUT INT8 *ArgumentBuffer OPTIONAL, + IN OUT UINTN *ArgumentBufferSize OPTIONAL, + IN BOOLEAN Periodic OPTIONAL, + IN UINTN ActivationInterval OPTIONAL + ) +{ + EFI_STATUS Status; + UINT8 Data; + + if (Periodic) { + DEBUG ((EFI_D_WARN, "Invalid parameter\n")); + return EFI_INVALID_PARAMETER; + } + + if (ArgumentBuffer == NULL) { + Data = 0xFF; + } else { + if (ArgumentBufferSize == NULL || *ArgumentBufferSize != 1) { + return EFI_INVALID_PARAMETER; + } + + Data = *ArgumentBuffer; + } + /// + /// Clear any pending the APM SMI + /// + Status = SmmClear (); + if (EFI_ERROR (Status)) { + return Status; + } + + return SmmTrigger (Data); +} + +/** + This routine clears an SMI + + @param[in] PeiServices General purpose services available to every PEIM. + @param[in] This The EFI SMM Control ppi instance + @param[in] Periodic Periodic or not + + @retval EFI Status Describing the result of the operation + @retval EFI_INVALID_PARAMETER Some parameter value passed is not supported +**/ +EFI_STATUS +EFIAPI +PeiDeactivate ( + IN EFI_PEI_SERVICES **PeiServices, + IN PEI_SMM_CONTROL_PPI *This, + IN BOOLEAN Periodic OPTIONAL + ) +{ + if (Periodic) { + return EFI_INVALID_PARAMETER; + } + + return SmmClear (); +} + |