1. removed BaseTimerLibLocalApic from MdePkg and Nt32TimerLib from EdkNt32Pkg.
2. added BaseTimerlibNullTemplate in MdePkg and SecPeiDxeTimerLibCpu in MdePkg. 3. modified the related spd and fpd files git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2347 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
168
MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c
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168
MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c
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@@ -0,0 +1,168 @@
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/** @file
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Timer Library functions built upon ITC on IA32/x64.
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Copyright (c) 2006 - 2007, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: IpfTimerLib.c
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**/
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/**
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Performs a delay measured as number of ticks.
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An internal function to perform a delay measured as number of ticks. It's
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invoked by MicroSecondDelay() and NanoSecondDelay().
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@param Delay Number of ticks to delay.
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**/
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STATIC
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VOID
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InternalIpfDelay (
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IN INT64 Delay
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)
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{
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INT64 Ticks;
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//
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// The target timer count is calculated here
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//
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Ticks = IpfReadItc () + Delay;
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//
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// Wait until time out
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// Delay > 2^63 could not be handled by this function
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// Timer wrap-arounds are handled correctly by this function
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//
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while (Ticks - IpfReadItc () >= 0);
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}
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/**
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Stalls the CPU for at least the given number of microseconds.
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Stalls the CPU for the number of microseconds specified by MicroSeconds.
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@param MicroSeconds The minimum number of microseconds to delay.
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@return MicroSeconds
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**/
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UINTN
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EFIAPI
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MicroSecondDelay (
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IN UINTN MicroSeconds
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)
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{
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InternalIpfDelay (
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GetPerformanceCounterProperties (NULL, NULL) *
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MicroSeconds /
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1000000
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);
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return MicroSeconds;
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}
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/**
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Stalls the CPU for at least the given number of nanoseconds.
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Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
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@param NanoSeconds The minimum number of nanoseconds to delay.
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@return NanoSeconds
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**/
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UINTN
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EFIAPI
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NanoSecondDelay (
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IN UINTN NanoSeconds
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)
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{
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InternalIpfDelay (
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GetPerformanceCounterProperties (NULL, NULL) *
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NanoSeconds /
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1000000000
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);
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return NanoSeconds;
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}
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/**
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Retrieves the current value of a 64-bit free running performance counter.
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Retrieves the current value of a 64-bit free running performance counter. The
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counter can either count up by 1 or count down by 1. If the physical
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performance counter counts by a larger increment, then the counter values
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must be translated. The properties of the counter can be retrieved from
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GetPerformanceCounterProperties().
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@return The current value of the free running performance counter.
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**/
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UINT64
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EFIAPI
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GetPerformanceCounter (
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VOID
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)
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{
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return IpfReadItc ();
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}
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/**
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Retrieves the 64-bit frequency in Hz and the range of performance counter
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values.
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If StartValue is not NULL, then the value that the performance counter starts
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with immediately after is it rolls over is returned in StartValue. If
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EndValue is not NULL, then the value that the performance counter end with
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immediately before it rolls over is returned in EndValue. The 64-bit
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frequency of the performance counter in Hz is always returned. If StartValue
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is less than EndValue, then the performance counter counts up. If StartValue
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is greater than EndValue, then the performance counter counts down. For
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example, a 64-bit free running counter that counts up would have a StartValue
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of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter
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that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.
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@param StartValue The value the performance counter starts with when it
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rolls over.
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@param EndValue The value that the performance counter ends with before
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it rolls over.
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@return The frequency in Hz.
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**/
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UINT64
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EFIAPI
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GetPerformanceCounterProperties (
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OUT UINT64 *StartValue, OPTIONAL
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OUT UINT64 *EndValue OPTIONAL
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)
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{
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PAL_PROC_RETURN PalRet;
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UINT64 BaseFrequence;
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PalRet = PalCallStatic (NULL, 13, 0, 0, 0);
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ASSERT (PalRet.Status == 0);
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BaseFrequence = PalRet.r9;
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PalRet = PalCallStatic (NULL, 14, 0, 0, 0);
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ASSERT (PalRet.Status == 0);
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if (StartValue != NULL) {
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*StartValue = 0;
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}
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if (EndValue != NULL) {
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*EndValue = (UINT64)(-1);
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}
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return BaseFrequence * (PalRet.r11 >> 32) / (UINT32)PalRet.r11;
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}
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64
MdePkg/Library/SecPeiDxeTimerLibCpu/SecPeiDxeTimerLibCpu.msa
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64
MdePkg/Library/SecPeiDxeTimerLibCpu/SecPeiDxeTimerLibCpu.msa
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@@ -0,0 +1,64 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<MsaHeader>
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<ModuleName>SecPeiDxeTimerLibCpu</ModuleName>
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<ModuleType>BASE</ModuleType>
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<GuidValue>b5a05743-9b71-489b-a0ed-a0eb3950d23b</GuidValue>
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<Version>1.0</Version>
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<Abstract>Timer Library implementation for boot time drivers.</Abstract>
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<Description>Timer Library that uses CPU resources to provide calibrated
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delays on IA-32 and x64, and uses ITC on IPF. Note: Because CpuLocalApci
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and ITC could be programmed by OS, it cannot be used by SMM drivers
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and runtime drivers, ACPI timer is recommended for SMM drivers and RUNTIME
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drivers.</Description>
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<Copyright>Copyright (c) 2006 - 2007, Intel Corporation.</Copyright>
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<License>All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.</License>
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<Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
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</MsaHeader>
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<ModuleDefinitions>
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<SupportedArchitectures>IA32 X64 IPF</SupportedArchitectures>
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<BinaryModule>false</BinaryModule>
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<OutputFileBasename>SecPeiDxeTimerLibCpu</OutputFileBasename>
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</ModuleDefinitions>
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<LibraryClassDefinitions>
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<LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="BASE DXE_CORE DXE_DRIVER DXE_SAL_DRIVER PEIM PEI_CORE SEC UEFI_APPLICATION UEFI_DRIVER">
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<Keyword>TimerLib</Keyword>
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</LibraryClass>
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<LibraryClass Usage="ALWAYS_CONSUMED">
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<Keyword>BaseLib</Keyword>
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</LibraryClass>
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<LibraryClass Usage="ALWAYS_CONSUMED">
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<Keyword>IoLib</Keyword>
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</LibraryClass>
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<LibraryClass Usage="ALWAYS_CONSUMED">
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<Keyword>DebugLib</Keyword>
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</LibraryClass>
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<LibraryClass Usage="ALWAYS_CONSUMED">
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<Keyword>PcdLib</Keyword>
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</LibraryClass>
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</LibraryClassDefinitions>
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<SourceFiles>
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<Filename SupArchList="IA32">x86TimerLib.c</Filename>
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<Filename SupArchList="X64">x86TimerLib.c</Filename>
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<Filename SupArchList="IPF">IpfTimerLib.c</Filename>
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</SourceFiles>
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<PackageDependencies>
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<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
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</PackageDependencies>
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<Externs>
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<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
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<Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
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</Externs>
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<PcdCoded>
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<PcdEntry PcdItemType="FIXED_AT_BUILD" Usage="ALWAYS_CONSUMED">
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<C_Name>PcdFSBClock</C_Name>
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<TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
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<HelpText>This value is FSB Clock frequency. Its unit is Hz and its default value is 200000000, that means FSB frequency is 200Mhz.</HelpText>
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</PcdEntry>
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</PcdCoded>
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</ModuleSurfaceArea>
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250
MdePkg/Library/SecPeiDxeTimerLibCpu/x86TimerLib.c
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250
MdePkg/Library/SecPeiDxeTimerLibCpu/x86TimerLib.c
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@@ -0,0 +1,250 @@
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/** @file
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Timer Library functions built upon local APIC on IA32/x64.
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@bug Should use PCD to retrieve all the constants including index of
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the IA32_APIC_BASE MSR, the offsets of InitialCount, CorrentCount
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and DivideConfiguration.
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Copyright (c) 2006 - 2007, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: x86TimerLib.c
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**/
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//
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// The following array is used in calculating the frequency of local APIC
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// timer. Refer to IA-32 developers' manual for more details.
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//
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GLOBAL_REMOVE_IF_UNREFERENCED
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CONST UINT8 mTimerLibLocalApicDivisor[] = {
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0x02, 0x04, 0x08, 0x10,
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0x02, 0x04, 0x08, 0x10,
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0x20, 0x40, 0x80, 0x01,
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0x20, 0x40, 0x80, 0x01
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};
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/**
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Internal function to retrieve the base address of local APIC.
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Internal function to retrieve the base address of local APIC.
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@return The base address of local APIC
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**/
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STATIC
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UINTN
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InternalX86GetApicBase (
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VOID
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)
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{
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return (UINTN)AsmMsrBitFieldRead64 (27, 12, 35) << 12;
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}
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/**
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Internal function to return the frequency of the local APIC timer.
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Internal function to return the frequency of the local APIC timer.
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@param ApicBase The base address of memory mapped registers of local APIC.
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@return The frequency of the timer in Hz.
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**/
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STATIC
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UINT32
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InternalX86GetTimerFrequency (
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IN UINTN ApicBase
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)
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{
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return
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PcdGet32(PcdFSBClock) /
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mTimerLibLocalApicDivisor[MmioBitFieldRead32 (ApicBase + 0x3e0, 0, 3)];
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}
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/**
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Internal function to read the current tick counter of local APIC.
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Internal function to read the current tick counter of local APIC.
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@param ApicBase The base address of memory mapped registers of local APIC.
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@return The tick counter read.
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**/
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STATIC
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INT32
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InternalX86GetTimerTick (
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IN UINTN ApicBase
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)
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{
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return MmioRead32 (ApicBase + 0x390);
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}
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/**
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Stalls the CPU for at least the given number of ticks.
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Stalls the CPU for at least the given number of ticks. It's invoked by
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MicroSecondDelay() and NanoSecondDelay().
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@param ApicBase The base address of memory mapped registers of local APIC.
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@param Delay A period of time to delay in ticks.
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**/
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STATIC
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VOID
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InternalX86Delay (
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IN UINTN ApicBase,
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IN UINT32 Delay
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)
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{
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INT32 Ticks;
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//
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// The target timer count is calculated here
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//
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Ticks = InternalX86GetTimerTick (ApicBase) - Delay;
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//
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// Wait until time out
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// Delay > 2^31 could not be handled by this function
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// Timer wrap-arounds are handled correctly by this function
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//
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while (InternalX86GetTimerTick (ApicBase) - Ticks >= 0);
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}
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/**
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Stalls the CPU for at least the given number of microseconds.
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Stalls the CPU for the number of microseconds specified by MicroSeconds.
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@param MicroSeconds The minimum number of microseconds to delay.
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@return MicroSeconds
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**/
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UINTN
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EFIAPI
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MicroSecondDelay (
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IN UINTN MicroSeconds
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)
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{
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UINTN ApicBase;
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ApicBase = InternalX86GetApicBase ();
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InternalX86Delay (
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ApicBase,
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(UINT32)DivU64x32 (
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MultU64x64 (
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InternalX86GetTimerFrequency (ApicBase),
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MicroSeconds
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),
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1000000u
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)
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);
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return MicroSeconds;
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}
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/**
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Stalls the CPU for at least the given number of nanoseconds.
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Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
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@param NanoSeconds The minimum number of nanoseconds to delay.
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@return NanoSeconds
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**/
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UINTN
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EFIAPI
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NanoSecondDelay (
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IN UINTN NanoSeconds
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)
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{
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UINTN ApicBase;
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ApicBase = InternalX86GetApicBase ();
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InternalX86Delay (
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ApicBase,
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(UINT32)DivU64x32 (
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MultU64x64 (
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InternalX86GetTimerFrequency (ApicBase),
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NanoSeconds
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),
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1000000000u
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)
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);
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return NanoSeconds;
|
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}
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/**
|
||||
Retrieves the current value of a 64-bit free running performance counter.
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|
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Retrieves the current value of a 64-bit free running performance counter. The
|
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counter can either count up by 1 or count down by 1. If the physical
|
||||
performance counter counts by a larger increment, then the counter values
|
||||
must be translated. The properties of the counter can be retrieved from
|
||||
GetPerformanceCounterProperties().
|
||||
|
||||
@return The current value of the free running performance counter.
|
||||
|
||||
**/
|
||||
UINT64
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EFIAPI
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GetPerformanceCounter (
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VOID
|
||||
)
|
||||
{
|
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return (UINT64)(UINT32)InternalX86GetTimerTick (InternalX86GetApicBase ());
|
||||
}
|
||||
|
||||
/**
|
||||
Retrieves the 64-bit frequency in Hz and the range of performance counter
|
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values.
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|
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If StartValue is not NULL, then the value that the performance counter starts
|
||||
with immediately after is it rolls over is returned in StartValue. If
|
||||
EndValue is not NULL, then the value that the performance counter end with
|
||||
immediately before it rolls over is returned in EndValue. The 64-bit
|
||||
frequency of the performance counter in Hz is always returned. If StartValue
|
||||
is less than EndValue, then the performance counter counts up. If StartValue
|
||||
is greater than EndValue, then the performance counter counts down. For
|
||||
example, a 64-bit free running counter that counts up would have a StartValue
|
||||
of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter
|
||||
that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.
|
||||
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||||
@param StartValue The value the performance counter starts with when it
|
||||
rolls over.
|
||||
@param EndValue The value that the performance counter ends with before
|
||||
it rolls over.
|
||||
|
||||
@return The frequency in Hz.
|
||||
|
||||
**/
|
||||
UINT64
|
||||
EFIAPI
|
||||
GetPerformanceCounterProperties (
|
||||
OUT UINT64 *StartValue, OPTIONAL
|
||||
OUT UINT64 *EndValue OPTIONAL
|
||||
)
|
||||
{
|
||||
UINTN ApicBase;
|
||||
|
||||
ApicBase = InternalX86GetApicBase ();
|
||||
|
||||
if (StartValue != NULL) {
|
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*StartValue = MmioRead32 (ApicBase + 0x380);
|
||||
}
|
||||
|
||||
if (EndValue != NULL) {
|
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*EndValue = 0;
|
||||
}
|
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|
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return (UINT64) InternalX86GetTimerFrequency (ApicBase);;
|
||||
}
|
||||
Reference in New Issue
Block a user