/** @file
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This is the FSP driver that initializes the Intel PCH.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "PchInit.h"
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EFI_STATUS
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EFIAPI
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PchOnPciEnumCompleteFsp (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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);
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STATIC
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EFI_PEI_NOTIFY_DESCRIPTOR mPchOnPciEnumCompleteNotifyList[] = {
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{
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(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiPciEnumerationCompleteProtocolGuid,
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PchOnPciEnumCompleteFsp
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}
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};
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EFI_STATUS
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EFIAPI
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PchReadyToBootEventFsp (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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);
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STATIC EFI_PEI_NOTIFY_DESCRIPTOR mReadyToBootNotifyList[] = {
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{
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(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiEventReadyToBootGuid,
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PchReadyToBootEventFsp
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}
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};
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/**
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<b>FSP PchInit Module Entry Point for FSP</b>\n
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@param[in] FileHandle PEIM's file handle
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@param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver
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**/
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EFI_STATUS
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EFIAPI
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PchInitEntryPointFsp (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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DEBUG ((DEBUG_INFO, "PchInitEntryPointFsp() Start\n"));
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PchInitEntryPointCommon ();
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Status = PeiServicesNotifyPpi (mPchOnPciEnumCompleteNotifyList);
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ASSERT_EFI_ERROR (Status);
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Status = PeiServicesNotifyPpi (mReadyToBootNotifyList);
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ASSERT_EFI_ERROR (Status);
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DEBUG ((DEBUG_INFO, "PchInitEntryPointFsp() End\n"));
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return Status;
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}
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/**
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Fsp PCH initialization on PCI enumeration complete
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@param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
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@param[in] NotifyDescriptor Address of the notification descriptor data structure.
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@param[in] Ppi Address of the PPI that was installed.
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver
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**/
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EFI_STATUS
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EFIAPI
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PchOnPciEnumCompleteFsp (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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)
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{
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DEBUG ((DEBUG_INFO, "PchOnPciEnumCompleteFsp() Start\n"));
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PchOnPciEnumCompleteCommon ();
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DEBUG ((DEBUG_INFO, "PchOnPciEnumCompleteFsp() End\n"));
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return EFI_SUCCESS;
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}
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/**
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FSP PCH Ready to boot event handler
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@param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
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@param[in] NotifyDescriptor Address of the notification descriptor data structure.
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@param[in] Ppi Address of the PPI that was installed.
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver
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**/
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EFI_STATUS
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EFIAPI
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PchReadyToBootEventFsp (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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)
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{
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UINTN XhciMmioBase;
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UINTN XhciPciMmBase;
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UINT16 XhciPciCommand;
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BOOLEAN XhciPdoRestartNeeded;
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DEBUG ((DEBUG_INFO, "PchReadyToBootEventFsp() Start\n"));
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// Check if USB PDO programming was skipped during PEI phase
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if (mPchConfigHob->Usb.DelayPdoProgramming == TRUE) {
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XhciPciMmBase = MmPciBase (
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DEFAULT_PCI_BUS_NUMBER_PCH,
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PCI_DEVICE_NUMBER_PCH_XHCI,
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PCI_FUNCTION_NUMBER_PCH_XHCI
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);
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// Check if xHCI has memory access
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XhciPciCommand = MmioRead16 (XhciPciMmBase + PCI_COMMAND_OFFSET);
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if ((XhciPciCommand & EFI_PCI_COMMAND_MEMORY_SPACE) == 0x0) {
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DEBUG ((DEBUG_ERROR, "xHCI Controller isn't configured properly\n"));
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} else {
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// Getting base MMIO address for xHCI
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XhciMmioBase = MmioRead32 (XhciPciMmBase + R_PCH_XHCI_MEM_BASE) & (B_PCH_XHCI_MEM_ALIGN_MASK << N_PCH_XHCI_MEM_ALIGN);
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XhciPdoRestartNeeded = UsbPdoProgramming (
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XhciMmioBase,
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mPchConfigHob->Usb.Usb2DisabledPorts,
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mPchConfigHob->Usb.Usb3DisabledPorts
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);
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// If PDO registers are locked, reset platform to unlock them
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if (XhciPdoRestartNeeded) {
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(*PeiServices)->ResetSystem2 (EfiResetWarm, EFI_SUCCESS, 0, NULL);
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}
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}
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} else {
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DEBUG ((DEBUG_INFO, "PDO register already programmed\n"));
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}
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DEBUG ((DEBUG_INFO, "PchReadyToBootEventFsp() End\n"));
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return EFI_SUCCESS;
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}
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