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Convert the line endings stored for all text files in the repository to LF. The majority previously used DOS-style CRLF line endings. Add a .gitattributes file to enforce this and treat certain extensions as never being text files. Update PatchCheck.py to insist on LF line endings rather than CRLF. However, its other checks fail on this commit due to lots of pre-existing complaints that it only notices because the line endings have changed. Silicon/QemuSocPkg/FspBin/Patches/0001-Build-QEMU-FSP-2.0-binaries.patch needs to be treated as binary since it contains a mixture of line endings. This change has implications depending on the client platform you are using the repository from: * Windows The usual configuration for Git on Windows means that text files will be checked out to the work tree with DOS-style CRLF line endings. If that's not the case then you can configure Git to do so for the entire machine with: git config --global core.autocrlf true or for just the repository with: git config core.autocrlf true Line endings will be normalised to LF when they are committed to the repository. If you commit a text file with only LF line endings then it will be converted to CRLF line endings in your work tree. * Linux, MacOS and other Unices The usual configuration for Git on such platforms is to check files out of the repository with LF line endings. This is probably the right thing for you. In the unlikely even that you are using Git on Unix but editing or compiling on Windows for some reason then you may need to tweak your configuration to force the use of CRLF line endings as described above. * General For more information see https://docs.github.com/en/get-started/getting-started-with-git/configuring-git-to-handle-line-endings . Fixes: https://github.com/slimbootloader/slimbootloader/issues/1400 Signed-off-by: Mike Crowe <mac@mcrowe.com>
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
/** @file
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Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Register/Intel/Cpuid.h>
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#include <Library/BaseLib.h>
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/**
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Read current timestamp.
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@return 64 bit current timestampe value.
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**/
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UINT64
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EFIAPI
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ReadTimeStamp (
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VOID
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)
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{
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return AsmReadTsc();
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}
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/**
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Get timestamp frequency in KHZ.
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@return Timestamp frequency in KHZ.
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**/
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UINT32
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EFIAPI
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GetTimeStampFrequency (
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VOID
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)
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{
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UINT32 Ratio;
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Ratio = ((UINT32)AsmReadMsr64 (0xCE) >> 8) & 0xFF;
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if (Ratio == 0) {
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// This might be QEMU case
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Ratio = 8;
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}
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// Ratio * 100000
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return (Ratio * 100000);
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}
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/**
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Get timestamp accurate frequency in HZ by CPUID.
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The TSC counting frequency is determined by using CPUID leaf 0x15. Frequency in MHz = Core XTAL frequency * EBX/EAX.
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In newer flavors of the CPU, core xtal frequency is returned in ECX or 0 if not supported.
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@retval The number of TSC counts per second.
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**/
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UINT64
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EFIAPI
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GetTimeStampAccurateFrequency (
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VOID
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)
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{
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UINT64 TscFrequency;
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UINT32 RegEax;
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UINT32 RegEbx;
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UINT32 RegEcx;
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// Use CPUID leaf 0x15 Time Stamp Counter and Nominal Core Crystal Clock Information
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// EBX returns 0 if not supported. ECX, if non zero, provides Core Xtal Frequency in hertz.
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// TSC frequency = (ECX, Core Xtal Frequency) * EBX/EAX.
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AsmCpuid (CPUID_TIME_STAMP_COUNTER, &RegEax, &RegEbx, &RegEcx, NULL);
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// If EAX, EBX or ECX returns 0, the XTAL ratio is not enumerated.
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if ((RegEax == 0) || (RegEbx == 0 ) || (RegEcx == 0)) {
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// Fallback to use GetTimeStampFrequency() instead
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TscFrequency = MultU64x32 (GetTimeStampFrequency(), 1000);
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} else {
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// Calculate TSC frequency = (ECX, Core Xtal Frequency) * EBX/EAX
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TscFrequency = DivU64x32 (MultU64x32 (RegEcx, RegEbx) + (UINT64)(RegEax >> 1), RegEax);
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}
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return TscFrequency;
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}
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/**
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Convert microseconds to timestamp ticks.
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@param[in] MicroSeconds The number of microseconds to convert.
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@retval Timestamp ticks
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**/
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UINT64
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EFIAPI
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MicroSecondToTimeStampTick (
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IN UINT64 MicroSeconds
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)
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{
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return DivU64x32 (
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MultU64x64 (
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GetTimeStampAccurateFrequency (),
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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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/**
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Convert timestamp ticks to microseconds.
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@param[in] Ticks The number of timestamp ticks to convert.
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@retval MicroSeconds
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**/
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UINT64
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EFIAPI
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TimeStampTickToMicroSecond (
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IN UINT64 Ticks
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)
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{
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return DivU64x64Remainder (
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MultU64x32 (Ticks, 1000000u),
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GetTimeStampAccurateFrequency (),
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NULL
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);
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}
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