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/*++
Copyright (c) 2009 - 2010, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
DebugMask.c
Abstract:
Installs DebugMask PPI.
--*/
#include "Tiano.h"
#include "PeiCore.h"
#include EFI_PPI_CONSUMER (DebugMask)
#include EFI_PPI_DEPENDENCY (Variable)
#include EFI_GUID_DEFINITION (GlobalVariable)
EFI_STATUS
EFIAPI
DebugMaskNotifyCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
);
static EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList = {
EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gPeiReadOnlyVariablePpiGuid,
DebugMaskNotifyCallback
};
VOID
InstallCoreDebugMaskPpi (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_CORE_INSTANCE *OldCoreData
)
/*++
Routine Description:
Installs DebugMask PPI.
Arguments:
PeiServices - The PEI core services table.
OldCoreData - Pointer to the old core data.
NULL if being run in non-permament memory mode.
Returns:
None
--*/
{
EFI_STATUS Status;
EFI_DEBUG_MASK_PPI *DebugMaskPpi;
EFI_PEI_PPI_DESCRIPTOR *DebugMaskPpiDesc;
if (OldCoreData == NULL) {
Status = ((*PeiServices)->AllocatePool) (PeiServices, sizeof (EFI_DEBUG_MASK_PPI), &DebugMaskPpi);
if (EFI_ERROR(Status) || (DebugMaskPpi == NULL)) {
return;
}
Status = ((*PeiServices)->AllocatePool) (PeiServices, sizeof (EFI_PEI_PPI_DESCRIPTOR), &DebugMaskPpiDesc);
if (EFI_ERROR(Status) || (DebugMaskPpiDesc == NULL)) {
return;
}
DebugMaskPpiDesc->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
DebugMaskPpiDesc->Guid = &gEfiDebugMaskPpiGuid;
DebugMaskPpiDesc->Ppi = DebugMaskPpi;
DebugMaskPpi->ImageDebugMask = gErrorLevel;
Status = (**PeiServices).InstallPpi (PeiServices, DebugMaskPpiDesc);
ASSERT_PEI_ERROR (PeiServices, Status);
if (EFI_ERROR(Status)) {
return;
}
PeiNotifyPpi (PeiServices, &mNotifyList);
}
return;
}
EFI_STATUS
EFIAPI
DebugMaskNotifyCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
/*++
Routine Description:
Callback function to update DebugMask value
Arguments:
PeiServices - The PEI core services table.
NotifyDescriptor - The descriptor for the notification event.
Ppi - Pointer to the PPI in question.
Returns:
EFI_SUCCESS - The function is successfully processed.
--*/
{
EFI_STATUS Status;
PEI_READ_ONLY_VARIABLE_PPI *VariableServices;
UINTN DebugMaskSize;
UINT64 DebugMask;
EFI_DEBUG_MASK_PPI *DebugMaskPpi;
//
// Locate Variable Ppi
//
Status = (*PeiServices)->LocatePpi (PeiServices, &gPeiReadOnlyVariablePpiGuid, 0, NULL, &VariableServices);
if (VariableServices) {
//
// Get L"EFIDebug" Variable
//
DebugMaskSize = sizeof (UINT32);
Status = VariableServices->PeiGetVariable (
PeiServices,
L"EFIDebug",
&gEfiGlobalVariableGuid,
NULL,
&DebugMaskSize,
&DebugMask
);
if (!EFI_ERROR(Status)) {
Status = (*PeiServices)->LocatePpi (PeiServices, &gEfiDebugMaskPpiGuid, 0, NULL, &DebugMaskPpi);
if (!EFI_ERROR(Status)) {
DebugMaskPpi->ImageDebugMask = (UINTN)DebugMask;
}
}
}
return Status;
}
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