hikey: Add UEFI sources for reference
UEFI needs to be built outside Android build system.
Please follow the instructions in README.
The sources correspond to:
https://github.com/96boards/edk2/commit/14eae0c12e71fd33c4c0fc51e4475e8db02566cf
https://github.com/96boards/arm-trusted-firmware/commit/e9b4909dcd75fc4ae7041cfb83d28ab9adb7afdf
https://github.com/96boards/l-loader/commit/6b784ad5c4ab00e2b1c6f53cd5f74054e5d00a78
https://git.linaro.org/uefi/uefi-tools.git/commit/abe618f8ab72034fff1ce46c9c006a2c6bd40a7e
Change-Id: Ieeefdb63e673e0c8e64e0a1f02c7bddc63b2c7fb
Signed-off-by: Vishal Bhoj <vishal.bhoj@linaro.org>
diff --git a/uefi/linaro-edk2/MdeModulePkg/Universal/TimestampDxe/TimestampDxe.c b/uefi/linaro-edk2/MdeModulePkg/Universal/TimestampDxe/TimestampDxe.c
new file mode 100644
index 0000000..30349b5
--- /dev/null
+++ b/uefi/linaro-edk2/MdeModulePkg/Universal/TimestampDxe/TimestampDxe.c
@@ -0,0 +1,166 @@
+/** @file
+ Implementation of Timestamp Protocol using UEFI APIs.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+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/DebugLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/TimerLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Protocol/Timestamp.h>
+
+//
+// The StartValue in TimerLib
+//
+UINT64 mTimerLibStartValue = 0;
+
+//
+// The EndValue in TimerLib
+//
+UINT64 mTimerLibEndValue = 0;
+
+//
+// The properties of timestamp
+//
+EFI_TIMESTAMP_PROPERTIES mTimestampProperties = {
+ 0,
+ 0
+};
+
+/**
+ Retrieves the current value of a 64-bit free running timestamp counter.
+
+ The counter shall count up in proportion to the amount of time that has passed. The counter value
+ will always roll over to zero. The properties of the counter can be retrieved from GetProperties().
+ The caller should be prepared for the function to return the same value twice across successive calls.
+ The counter value will not go backwards other than when wrapping, as defined by EndValue in GetProperties().
+ The frequency of the returned timestamp counter value must remain constant. Power management operations that
+ affect clocking must not change the returned counter frequency. The quantization of counter value updates may
+ vary as long as the value reflecting time passed remains consistent.
+
+ @retval The current value of the free running timestamp counter.
+
+**/
+UINT64
+EFIAPI
+TimestampDriverGetTimestamp (
+ VOID
+ )
+{
+ //
+ // The timestamp of Timestamp Protocol
+ //
+ UINT64 TimestampValue;
+ TimestampValue = 0;
+
+ //
+ // Get the timestamp
+ //
+ if (mTimerLibStartValue > mTimerLibEndValue) {
+ TimestampValue = mTimerLibStartValue - GetPerformanceCounter();
+ } else {
+ TimestampValue = GetPerformanceCounter() - mTimerLibStartValue;
+ }
+
+ return TimestampValue;
+}
+
+/**
+ Obtains timestamp counter properties including frequency and value limits.
+
+ @param[out] Properties The properties of the timestamp counter.
+
+ @retval EFI_SUCCESS The properties were successfully retrieved.
+ @retval EFI_DEVICE_ERROR An error occurred trying to retrieve the properties of the timestamp
+ counter subsystem. Properties is not pedated.
+ @retval EFI_INVALID_PARAMETER Properties is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+TimestampDriverGetProperties(
+ OUT EFI_TIMESTAMP_PROPERTIES *Properties
+ )
+{
+ if (Properties == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Get timestamp properties
+ //
+ CopyMem((VOID *) Properties, (VOID *) &mTimestampProperties, sizeof (mTimestampProperties));
+
+ return EFI_SUCCESS;
+}
+
+//
+// The Timestamp Protocol instance produced by this driver
+//
+EFI_TIMESTAMP_PROTOCOL mTimestamp = {
+ TimestampDriverGetTimestamp,
+ TimestampDriverGetProperties
+};
+
+/**
+ Entry point of the Timestamp Protocol driver.
+
+ @param ImageHandle The image handle of this driver.
+ @param SystemTable The pointer of EFI_SYSTEM_TABLE.
+
+ @retval EFI_SUCCESS Watchdog Timer Architectural Protocol successfully installed.
+
+**/
+EFI_STATUS
+EFIAPI
+TimestampDriverInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ EFI_HANDLE TimestampHandle;
+ TimestampHandle = NULL;
+
+ //
+ // Get the start value, end value and frequency in Timerlib
+ //
+ mTimestampProperties.Frequency = GetPerformanceCounterProperties(&mTimerLibStartValue, &mTimerLibEndValue);
+
+ //
+ // Set the EndValue
+ //
+ if (mTimerLibEndValue > mTimerLibStartValue) {
+ mTimestampProperties.EndValue = mTimerLibEndValue - mTimerLibStartValue;
+ } else {
+ mTimestampProperties.EndValue = mTimerLibStartValue - mTimerLibEndValue;
+ }
+
+ DEBUG ((EFI_D_INFO, "TimerFrequency:0x%lx, TimerLibStartTime:0x%lx, TimerLibEndtime:0x%lx\n", mTimestampProperties.Frequency, mTimerLibStartValue, mTimerLibEndValue));
+
+ //
+ // Install the Timestamp Protocol onto a new handle
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &TimestampHandle,
+ &gEfiTimestampProtocolGuid,
+ &mTimestamp,
+ NULL
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}