2be2804b25
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1443 6f19259b-4bc3-4df7-8a09-765794883524
659 lines
19 KiB
C
659 lines
19 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Ppi.c
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Abstract:
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EFI PEI Core PPI services
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Revision History
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--*/
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#include <PeiMain.h>
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VOID
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InitializePpiServices (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_CORE_INSTANCE *OldCoreData
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)
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/*++
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Routine Description:
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Initialize PPI services.
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Arguments:
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PeiServices - The PEI core services table.
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OldCoreData - Pointer to the PEI Core data.
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NULL if being run in non-permament memory mode.
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Returns:
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Nothing
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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if (OldCoreData == NULL) {
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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PrivateData->PpiData.NotifyListEnd = MAX_PPI_DESCRIPTORS-1;
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PrivateData->PpiData.DispatchListEnd = MAX_PPI_DESCRIPTORS-1;
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PrivateData->PpiData.LastDispatchedNotify = MAX_PPI_DESCRIPTORS-1;
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}
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return;
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}
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VOID
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ConvertPpiPointers (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_HOB_HANDOFF_INFO_TABLE *OldHandOffHob,
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IN EFI_HOB_HANDOFF_INFO_TABLE *NewHandOffHob
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)
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/*++
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Routine Description:
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Migrate the Hob list from the CAR stack to PEI installed memory.
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Arguments:
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PeiServices - The PEI core services table.
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OldHandOffHob - The old handoff HOB list.
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NewHandOffHob - The new handoff HOB list.
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Returns:
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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UINT8 Index;
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PEI_PPI_LIST_POINTERS *PpiPointer;
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UINTN Fixup;
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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Fixup = (UINTN)NewHandOffHob - (UINTN)OldHandOffHob;
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for (Index = 0; Index < MAX_PPI_DESCRIPTORS; Index++) {
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if (Index < PrivateData->PpiData.PpiListEnd ||
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Index > PrivateData->PpiData.NotifyListEnd) {
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PpiPointer = &PrivateData->PpiData.PpiListPtrs[Index];
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if (((UINTN)PpiPointer->Raw < (UINTN)OldHandOffHob->EfiFreeMemoryBottom) &&
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((UINTN)PpiPointer->Raw >= (UINTN)OldHandOffHob)) {
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//
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// Convert the pointer to the PEIM descriptor from the old HOB heap
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// to the relocated HOB heap.
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//
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PpiPointer->Raw = (VOID *) ((UINTN)PpiPointer->Raw + Fixup);
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//
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// Only when the PEIM descriptor is in the old HOB should it be necessary
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// to try to convert the pointers in the PEIM descriptor
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//
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if (((UINTN)PpiPointer->Ppi->Guid < (UINTN)OldHandOffHob->EfiFreeMemoryBottom) &&
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((UINTN)PpiPointer->Ppi->Guid >= (UINTN)OldHandOffHob)) {
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//
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// Convert the pointer to the GUID in the PPI or NOTIFY descriptor
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// from the old HOB heap to the relocated HOB heap.
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//
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PpiPointer->Ppi->Guid = (VOID *) ((UINTN)PpiPointer->Ppi->Guid + Fixup);
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}
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//
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// Assume that no code is located in the temporary memory, so the pointer to
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// the notification function in the NOTIFY descriptor needs not be converted.
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//
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if (Index < PrivateData->PpiData.PpiListEnd &&
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(UINTN)PpiPointer->Ppi->Ppi < (UINTN)OldHandOffHob->EfiFreeMemoryBottom &&
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(UINTN)PpiPointer->Ppi->Ppi >= (UINTN)OldHandOffHob) {
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//
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// Convert the pointer to the PPI interface structure in the PPI descriptor
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// from the old HOB heap to the relocated HOB heap.
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//
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PpiPointer->Ppi->Ppi = (VOID *) ((UINTN)PpiPointer->Ppi->Ppi+ Fixup);
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}
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}
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}
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}
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}
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EFI_STATUS
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EFIAPI
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PeiInstallPpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PPI_DESCRIPTOR *PpiList
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)
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/*++
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Routine Description:
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Install PPI services.
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Arguments:
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PeiServices - Pointer to the PEI Service Table
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PpiList - Pointer to a list of PEI PPI Descriptors.
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Returns:
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EFI_SUCCESS - if all PPIs in PpiList are successfully installed.
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EFI_INVALID_PARAMETER - if PpiList is NULL pointer
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EFI_INVALID_PARAMETER - if any PPI in PpiList is not valid
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EFI_OUT_OF_RESOURCES - if there is no more memory resource to install PPI
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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INTN Index;
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INTN LastCallbackInstall;
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if (PpiList == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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Index = PrivateData->PpiData.PpiListEnd;
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LastCallbackInstall = Index;
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//
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// This is loop installs all PPI descriptors in the PpiList. It is terminated
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// by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last
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// EFI_PEI_PPI_DESCRIPTOR in the list.
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//
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for (;;) {
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//
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// Since PpiData is used for NotifyList and InstallList, max resource
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// is reached if the Install reaches the NotifyList
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//
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if (Index == PrivateData->PpiData.NotifyListEnd + 1) {
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Check if it is a valid PPI.
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// If not, rollback list to exclude all in this list.
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// Try to indicate which item failed.
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//
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if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {
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PrivateData->PpiData.PpiListEnd = LastCallbackInstall;
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DEBUG((EFI_D_ERROR, "ERROR -> InstallPpi: %g %x\n", PpiList->Guid, PpiList->Ppi));
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return EFI_INVALID_PARAMETER;
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}
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DEBUG((EFI_D_INFO, "Install PPI: %g\n", PpiList->Guid));
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PrivateData->PpiData.PpiListPtrs[Index].Ppi = PpiList;
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PrivateData->PpiData.PpiListEnd++;
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//
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// Continue until the end of the PPI List.
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//
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if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==
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EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {
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break;
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}
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PpiList++;
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Index++;
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}
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//
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// Dispatch any callback level notifies for newly installed PPIs.
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//
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DispatchNotify (
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PeiServices,
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EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,
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LastCallbackInstall,
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PrivateData->PpiData.PpiListEnd,
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PrivateData->PpiData.DispatchListEnd,
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PrivateData->PpiData.NotifyListEnd
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);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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PeiReInstallPpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PPI_DESCRIPTOR *OldPpi,
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IN EFI_PEI_PPI_DESCRIPTOR *NewPpi
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)
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/*++
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Routine Description:
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Re-Install PPI services.
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Arguments:
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PeiServices - Pointer to the PEI Service Table
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OldPpi - Pointer to the old PEI PPI Descriptors.
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NewPpi - Pointer to the new PEI PPI Descriptors.
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Returns:
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EFI_SUCCESS - if the operation was successful
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EFI_INVALID_PARAMETER - if OldPpi or NewPpi is NULL
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EFI_INVALID_PARAMETER - if NewPpi is not valid
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EFI_NOT_FOUND - if the PPI was not in the database
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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INTN Index;
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if ((OldPpi == NULL) || (NewPpi == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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if ((NewPpi->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {
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return EFI_INVALID_PARAMETER;
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}
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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//
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// Find the old PPI instance in the database. If we can not find it,
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// return the EFI_NOT_FOUND error.
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//
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for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {
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if (OldPpi == PrivateData->PpiData.PpiListPtrs[Index].Ppi) {
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break;
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}
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}
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if (Index == PrivateData->PpiData.PpiListEnd) {
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return EFI_NOT_FOUND;
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}
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//
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// Remove the old PPI from the database, add the new one.
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//
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DEBUG((EFI_D_INFO, "Reinstall PPI: %g\n", NewPpi->Guid));
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PrivateData->PpiData.PpiListPtrs[Index].Ppi = NewPpi;
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//
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// Dispatch any callback level notifies for the newly installed PPI.
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//
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DispatchNotify (
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PeiServices,
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EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,
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Index,
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Index+1,
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PrivateData->PpiData.DispatchListEnd,
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PrivateData->PpiData.NotifyListEnd
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);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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PeiLocatePpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_GUID *Guid,
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IN UINTN Instance,
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IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,
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IN OUT VOID **Ppi
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)
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/*++
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Routine Description:
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Locate a given named PPI.
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Arguments:
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PeiServices - Pointer to the PEI Service Table
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Guid - Pointer to GUID of the PPI.
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Instance - Instance Number to discover.
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PpiDescriptor - Pointer to reference the found descriptor. If not NULL,
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returns a pointer to the descriptor (includes flags, etc)
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Ppi - Pointer to reference the found PPI
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Returns:
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Status - EFI_SUCCESS if the PPI is in the database
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EFI_NOT_FOUND if the PPI is not in the database
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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INTN Index;
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EFI_GUID *CheckGuid;
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EFI_PEI_PPI_DESCRIPTOR *TempPtr;
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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//
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// Search the data base for the matching instance of the GUIDed PPI.
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//
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for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {
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TempPtr = PrivateData->PpiData.PpiListPtrs[Index].Ppi;
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CheckGuid = TempPtr->Guid;
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//
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// Don't use CompareGuid function here for performance reasons.
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// Instead we compare the GUID as INT32 at a time and branch
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// on the first failed comparison.
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//
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if ((((INT32 *)Guid)[0] == ((INT32 *)CheckGuid)[0]) &&
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(((INT32 *)Guid)[1] == ((INT32 *)CheckGuid)[1]) &&
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(((INT32 *)Guid)[2] == ((INT32 *)CheckGuid)[2]) &&
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(((INT32 *)Guid)[3] == ((INT32 *)CheckGuid)[3])) {
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if (Instance == 0) {
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if (PpiDescriptor != NULL) {
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*PpiDescriptor = TempPtr;
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}
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if (Ppi != NULL) {
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*Ppi = TempPtr->Ppi;
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}
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return EFI_SUCCESS;
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}
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Instance--;
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}
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}
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return EFI_NOT_FOUND;
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}
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EFI_STATUS
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EFIAPI
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PeiNotifyPpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList
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)
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/*++
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Routine Description:
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Install a notification for a given PPI.
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Arguments:
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PeiServices - Pointer to the PEI Service Table
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NotifyList - Pointer to list of Descriptors to notify upon.
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Returns:
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Status - EFI_SUCCESS if successful
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EFI_OUT_OF_RESOURCES if no space in the database
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EFI_INVALID_PARAMETER if not a good decriptor
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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INTN Index;
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INTN NotifyIndex;
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INTN LastCallbackNotify;
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EFI_PEI_NOTIFY_DESCRIPTOR *NotifyPtr;
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UINTN NotifyDispatchCount;
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NotifyDispatchCount = 0;
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if (NotifyList == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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Index = PrivateData->PpiData.NotifyListEnd;
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LastCallbackNotify = Index;
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//
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// This is loop installs all Notify descriptors in the NotifyList. It is
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// terminated by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last
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// EFI_PEI_NOTIFY_DESCRIPTOR in the list.
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//
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for (;;) {
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//
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// Since PpiData is used for NotifyList and InstallList, max resource
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// is reached if the Install reaches the PpiList
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//
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if (Index == PrivateData->PpiData.PpiListEnd - 1) {
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// If some of the PPI data is invalid restore original Notify PPI database value
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//
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if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) == 0) {
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PrivateData->PpiData.NotifyListEnd = LastCallbackNotify;
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DEBUG((EFI_D_ERROR, "ERROR -> InstallNotify: %g %x\n", NotifyList->Guid, NotifyList->Notify));
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return EFI_INVALID_PARAMETER;
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}
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if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {
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NotifyDispatchCount ++;
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}
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PrivateData->PpiData.PpiListPtrs[Index].Notify = NotifyList;
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PrivateData->PpiData.NotifyListEnd--;
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DEBUG((EFI_D_INFO, "Register PPI Notify: %g\n", NotifyList->Guid));
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if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==
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EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {
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break;
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}
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//
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// Go the next descriptor. Remember the NotifyList moves down.
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//
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NotifyList++;
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Index--;
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}
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//
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// If there is Dispatch Notify PPI installed put them on the bottom
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//
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if (NotifyDispatchCount > 0) {
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for (NotifyIndex = LastCallbackNotify; NotifyIndex > PrivateData->PpiData.NotifyListEnd; NotifyIndex--) {
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if ((PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {
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NotifyPtr = PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify;
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for (Index = NotifyIndex; Index < PrivateData->PpiData.DispatchListEnd; Index++){
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PrivateData->PpiData.PpiListPtrs[Index].Notify = PrivateData->PpiData.PpiListPtrs[Index + 1].Notify;
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}
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PrivateData->PpiData.PpiListPtrs[Index].Notify = NotifyPtr;
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PrivateData->PpiData.DispatchListEnd--;
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}
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}
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LastCallbackNotify -= NotifyDispatchCount;
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}
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//
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// Dispatch any callback level notifies for all previously installed PPIs.
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//
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DispatchNotify (
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PeiServices,
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EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,
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0,
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PrivateData->PpiData.PpiListEnd,
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LastCallbackNotify,
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PrivateData->PpiData.NotifyListEnd
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);
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return EFI_SUCCESS;
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}
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VOID
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ProcessNotifyList (
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IN EFI_PEI_SERVICES **PeiServices
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)
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/*++
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Routine Description:
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Process the Notify List at dispatch level.
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Arguments:
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PeiServices - Pointer to the PEI Service Table
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Returns:
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--*/
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{
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PEI_CORE_INSTANCE *PrivateData;
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INTN TempValue;
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PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
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while (TRUE) {
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//
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// Check if the PEIM that was just dispatched resulted in any
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// Notifies getting installed. If so, go process any dispatch
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// level Notifies that match the previouly installed PPIs.
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// Use "while" instead of "if" since DispatchNotify can modify
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// DispatchListEnd (with NotifyPpi) so we have to iterate until the same.
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//
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while (PrivateData->PpiData.LastDispatchedNotify != PrivateData->PpiData.DispatchListEnd) {
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TempValue = PrivateData->PpiData.DispatchListEnd;
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DispatchNotify (
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PeiServices,
|
|
EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,
|
|
0,
|
|
PrivateData->PpiData.LastDispatchedInstall,
|
|
PrivateData->PpiData.LastDispatchedNotify,
|
|
PrivateData->PpiData.DispatchListEnd
|
|
);
|
|
PrivateData->PpiData.LastDispatchedNotify = TempValue;
|
|
}
|
|
|
|
|
|
//
|
|
// Check if the PEIM that was just dispatched resulted in any
|
|
// PPIs getting installed. If so, go process any dispatch
|
|
// level Notifies that match the installed PPIs.
|
|
// Use "while" instead of "if" since DispatchNotify can modify
|
|
// PpiListEnd (with InstallPpi) so we have to iterate until the same.
|
|
//
|
|
while (PrivateData->PpiData.LastDispatchedInstall != PrivateData->PpiData.PpiListEnd) {
|
|
TempValue = PrivateData->PpiData.PpiListEnd;
|
|
DispatchNotify (
|
|
PeiServices,
|
|
EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,
|
|
PrivateData->PpiData.LastDispatchedInstall,
|
|
PrivateData->PpiData.PpiListEnd,
|
|
MAX_PPI_DESCRIPTORS-1,
|
|
PrivateData->PpiData.DispatchListEnd
|
|
);
|
|
PrivateData->PpiData.LastDispatchedInstall = TempValue;
|
|
}
|
|
|
|
if (PrivateData->PpiData.LastDispatchedNotify == PrivateData->PpiData.DispatchListEnd) {
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
VOID
|
|
DispatchNotify (
|
|
IN EFI_PEI_SERVICES **PeiServices,
|
|
IN UINTN NotifyType,
|
|
IN INTN InstallStartIndex,
|
|
IN INTN InstallStopIndex,
|
|
IN INTN NotifyStartIndex,
|
|
IN INTN NotifyStopIndex
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Dispatch notifications.
|
|
|
|
Arguments:
|
|
|
|
PeiServices - Pointer to the PEI Service Table
|
|
NotifyType - Type of notify to fire.
|
|
InstallStartIndex - Install Beginning index.
|
|
InstallStopIndex - Install Ending index.
|
|
NotifyStartIndex - Notify Beginning index.
|
|
NotifyStopIndex - Notify Ending index.
|
|
|
|
Returns: None
|
|
|
|
--*/
|
|
|
|
{
|
|
PEI_CORE_INSTANCE *PrivateData;
|
|
INTN Index1;
|
|
INTN Index2;
|
|
EFI_GUID *SearchGuid;
|
|
EFI_GUID *CheckGuid;
|
|
EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor;
|
|
|
|
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
|
|
|
|
//
|
|
// Remember that Installs moves up and Notifies moves down.
|
|
//
|
|
for (Index1 = NotifyStartIndex; Index1 > NotifyStopIndex; Index1--) {
|
|
NotifyDescriptor = PrivateData->PpiData.PpiListPtrs[Index1].Notify;
|
|
|
|
CheckGuid = NotifyDescriptor->Guid;
|
|
|
|
for (Index2 = InstallStartIndex; Index2 < InstallStopIndex; Index2++) {
|
|
SearchGuid = PrivateData->PpiData.PpiListPtrs[Index2].Ppi->Guid;
|
|
//
|
|
// Don't use CompareGuid function here for performance reasons.
|
|
// Instead we compare the GUID as INT32 at a time and branch
|
|
// on the first failed comparison.
|
|
//
|
|
if ((((INT32 *)SearchGuid)[0] == ((INT32 *)CheckGuid)[0]) &&
|
|
(((INT32 *)SearchGuid)[1] == ((INT32 *)CheckGuid)[1]) &&
|
|
(((INT32 *)SearchGuid)[2] == ((INT32 *)CheckGuid)[2]) &&
|
|
(((INT32 *)SearchGuid)[3] == ((INT32 *)CheckGuid)[3])) {
|
|
DEBUG ((EFI_D_INFO, "Notify: PPI Guid: %g, Peim notify entry point: %x\n",
|
|
SearchGuid,
|
|
NotifyDescriptor->Notify
|
|
));
|
|
NotifyDescriptor->Notify (
|
|
PeiServices,
|
|
NotifyDescriptor,
|
|
(PrivateData->PpiData.PpiListPtrs[Index2].Ppi)->Ppi
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|