2ef2b01e07
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers. EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell. BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine). git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/** @file
|
|
|
|
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
|
|
|
|
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.
|
|
|
|
**/
|
|
|
|
#include <Uefi.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
|
|
#include <Protocol/MonotonicCounter.h>
|
|
|
|
UINT64 gCurrentMonotonicCount = 0;
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
GetNextMonotonicCount (
|
|
OUT UINT64 *Count
|
|
)
|
|
{
|
|
if (Count == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
*Count = gCurrentMonotonicCount++;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
GetNextHighMonotonicCount (
|
|
OUT UINT32 *HighCount
|
|
)
|
|
{
|
|
if (HighCount == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
gCurrentMonotonicCount += 0x0000000100000000ULL;
|
|
|
|
*HighCount = RShiftU64 (gCurrentMonotonicCount, 32) & 0xFFFFFFFF;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
MonotonicCounterDriverInitialize (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_HANDLE Handle = NULL;
|
|
|
|
// Make sure the Monotonic Counter Architectural Protocol is not already installed in the system
|
|
ASSERT_PROTOCOL_ALREADY_INSTALLED(NULL, &gEfiMonotonicCounterArchProtocolGuid);
|
|
|
|
// Fill in the EFI Boot Services and EFI Runtime Services Monotonic Counter Fields
|
|
gBS->GetNextMonotonicCount = GetNextMonotonicCount;
|
|
gRT->GetNextHighMonotonicCount = GetNextHighMonotonicCount;
|
|
|
|
// Install the Monotonic Counter Architctural Protocol onto a new handle
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&Handle,
|
|
&gEfiMonotonicCounterArchProtocolGuid, NULL,
|
|
NULL
|
|
);
|
|
return Status;
|
|
}
|