REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1496
This commit copies the exact 8254TimerDxe driver from PcAtChipsetPkg to
OvmfPkg.
Cc: Jordan Justen
Cc: Laszlo Ersek
Cc: Ard Biesheuvel
Cc: David Woodhouse
Cc: Ray Ni
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu
---
OvmfPkg/8254TimerDxe/8254Timer.inf | 48 +++
OvmfPkg/8254TimerDxe/Timer.h| 191 +
OvmfPkg/8254TimerDxe/Timer.c| 407
OvmfPkg/8254TimerDxe/Timer.uni | 22 ++
OvmfPkg/8254TimerDxe/TimerExtra.uni | 20 +
5 files changed, 688 insertions(+)
diff --git a/OvmfPkg/8254TimerDxe/8254Timer.inf
b/OvmfPkg/8254TimerDxe/8254Timer.inf
new file mode 100644
index 00..46cf01de39
--- /dev/null
+++ b/OvmfPkg/8254TimerDxe/8254Timer.inf
@@ -0,0 +1,48 @@
+## @file
+# 8254 timer driver that provides Timer Arch protocol.
+#
+# Copyright (c) 2005 - 2018, 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.
+#
+##
+
+[Defines]
+ INF_VERSION= 0x00010005
+ BASE_NAME = Timer
+ MODULE_UNI_FILE= Timer.uni
+ FILE_GUID = f2765dec-6b41-11d5-8e71-00902707b35e
+ MODULE_TYPE= DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT= TimerDriverInitialize
+
+[Packages]
+ MdePkg/MdePkg.dec
+ IntelFrameworkPkg/IntelFrameworkPkg.dec
+
+[LibraryClasses]
+ UefiBootServicesTableLib
+ BaseLib
+ DebugLib
+ UefiDriverEntryPoint
+ IoLib
+
+[Sources]
+ Timer.h
+ Timer.c
+
+[Protocols]
+ gEfiCpuArchProtocolGuid ## CONSUMES
+ gEfiLegacy8259ProtocolGuid## CONSUMES
+ gEfiTimerArchProtocolGuid ## PRODUCES
+
+[Depex]
+ gEfiCpuArchProtocolGuid AND gEfiLegacy8259ProtocolGuid
+[UserExtensions.TianoCore."ExtraFiles"]
+ TimerExtra.uni
diff --git a/OvmfPkg/8254TimerDxe/Timer.h b/OvmfPkg/8254TimerDxe/Timer.h
new file mode 100644
index 00..9d70e3aa19
--- /dev/null
+++ b/OvmfPkg/8254TimerDxe/Timer.h
@@ -0,0 +1,191 @@
+/** @file
+ Private data structures
+
+Copyright (c) 2005 - 2018, 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.
+**/
+
+#ifndef _TIMER_H_
+#define _TIMER_H_
+
+#include
+
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+
+//
+// The PCAT 8253/8254 has an input clock at 1.193182 MHz and Timer 0 is
+// initialized as a 16 bit free running counter that generates an
interrupt(IRQ0)
+// each time the counter rolls over.
+//
+// 65536 counts
+// * 1,000,000 uS/S = 54925.4 uS = 549254 * 100 ns
+// 1,193,182 Hz
+//
+
+//
+// The maximum tick duration for 8254 timer
+//
+#define MAX_TIMER_TICK_DURATION 549254
+//
+// The default timer tick duration is set to 10 ms = 10 100 ns units
+//
+#define DEFAULT_TIMER_TICK_DURATION 10
+#define TIMER_CONTROL_PORT 0x43
+#define TIMER0_COUNT_PORT 0x40
+
+//
+// Function Prototypes
+//
+/**
+ Initialize the Timer Architectural Protocol driver
+
+ @param ImageHandle ImageHandle of the loaded driver
+ @param SystemTable Pointer to the System Table
+
+ @retval EFI_SUCCESSTimer Architectural Protocol created
+ @retval EFI_OUT_OF_RESOURCES Not enough resources available to initialize
driver.
+ @retval EFI_DEVICE_ERROR A device error occurred attempting to
initialize the driver.
+
+**/
+EFI_STATUS
+EFIAPI
+TimerDriverInitialize (
+ IN EFI_HANDLEImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+;
+
+/**
+
+ This function adjusts the period of timer interrupts to the value specified
+ by TimerPeriod. If the timer period is updated, then the selected timer
+ period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If
+ the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.
+ If an error occurs while attempting to update the timer period, then the
+ timer hardware will be put back in its state prior to this call, and
+ EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt
+ is disabled. This is not the same as disabling the CPU's interrupts.
+ Instead, it must either turn off the timer hardware,
