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| author | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
|---|---|---|
| committer | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
| commit | 2ef2b01e07c02db339f34004445734a2dbdd80e1 (patch) | |
| tree | 19532a6be8d8bdb0aef04bd00c1efb582f6dc841 /EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c | |
| parent | f7753a96ba1653ddd31b01c198a352f6332ac404 (diff) | |
| download | edk2-2ef2b01e07c02db339f34004445734a2dbdd80e1.tar.gz edk2-2ef2b01e07c02db339f34004445734a2dbdd80e1.tar.bz2 edk2-2ef2b01e07c02db339f34004445734a2dbdd80e1.zip | |
Adding support for BeagleBoard.
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
Diffstat (limited to 'EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c')
| -rw-r--r-- | EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c b/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c new file mode 100644 index 0000000000..66ebe67a92 --- /dev/null +++ b/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c @@ -0,0 +1,82 @@ +/** @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;
+}
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