diff options
| author | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
|---|---|---|
| committer | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
| commit | 878ddf1fc3540a715f63594ed22b6929e881afb4 (patch) | |
| tree | c56c44dac138137b510e1fba7c3efe5e4d84bea2 /MdePkg/Library/BaseTimerLibLocalApic/Ipf | |
| download | edk2-platforms-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.xz | |
Initial import.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseTimerLibLocalApic/Ipf')
| -rw-r--r-- | MdePkg/Library/BaseTimerLibLocalApic/Ipf/CallPalProc.s | 38 | ||||
| -rw-r--r-- | MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c | 155 | ||||
| -rw-r--r-- | MdePkg/Library/BaseTimerLibLocalApic/Ipf/ReadItc.s | 25 |
3 files changed, 218 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/CallPalProc.s b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/CallPalProc.s new file mode 100644 index 0000000000..18b0f5815a --- /dev/null +++ b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/CallPalProc.s @@ -0,0 +1,38 @@ +/// @file
+/// Contains an implementation of CallPalProcStatic on Itanium-based
+/// architecture.
+///
+/// Copyright (c) 2006, 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.
+///
+/// Module Name: CallPalProc.s
+///
+///
+
+.auto
+.text
+
+.proc CallPalProcStatic
+.type CallPalProcStatic, @function
+CallPalProcStatic::
+ mov r9 = ar.k5
+ mov r8 = ip
+ add r8 = (PalProcReturn - CallPalProcStatic), r8
+ mov r28 = r32
+ mov b7 = r9
+ mov r29 = r33
+ mov r30 = r34
+ mov r31 = r35
+ mov r32 = b0
+ mov b0 = r8
+ br.sptk b7
+PalProcReturn:
+ mov b0 = r32
+ br.ret.sptk.many b0
+.endp CallPalProcStatic
diff --git a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c new file mode 100644 index 0000000000..652cc7e6e4 --- /dev/null +++ b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/IpfTimerLib.c @@ -0,0 +1,155 @@ +/** @file
+ Timer Library functions built upon local APIC on IA32/x64.
+
+ @bug Should use PCD to retrieve all the constants including index of
+ the IA32_APIC_BASE MSR, the offsets of InitialCount, CorrentCount
+ and DivideConfiguration.
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ 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.
+
+ Module Name: IpfTimerLib.c
+
+**/
+
+UINT64
+ReadItc (
+ VOID
+ );
+
+typedef struct {
+ UINT64 Status;
+ UINT64 r9;
+ UINT64 r10;
+ UINT64 r11;
+} PAL_PROC_RETURN;
+
+PAL_PROC_RETURN
+CallPalProcStatic (
+ IN UINT64 Arg1,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
+ );
+
+/**
+ Stalls the CPU for at least the given number of microseconds.
+
+ Stalls the CPU for the number of microseconds specified by MicroSeconds.
+
+ @param MicroSeconds The minimum number of microseconds to delay.
+
+ @return The ticks delayed actually.
+
+**/
+UINTN
+EFIAPI
+MicroSecondDelay (
+ IN UINTN MicroSeconds
+ )
+{
+ UINT64 Ticks;
+ UINT64 Delay;
+
+ Ticks = GetPerformanceCounter ();
+ Delay = GetPerformanceCounterProperties (NULL, NULL) * MicroSeconds / 1000000;
+ while (Ticks + Delay < GetPerformanceCounter ());
+ return (UINTN)Delay;
+}
+
+/**
+ Stalls the CPU for at least the given number of nanoseconds.
+
+ Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
+
+ @param NanoSeconds The minimum number of nanoseconds to delay.
+
+ @return The ticks delayed actually.
+
+**/
+UINTN
+EFIAPI
+NanoSecondDelay (
+ IN UINTN NanoSeconds
+ )
+{
+ UINT64 Ticks;
+ UINT64 Delay;
+
+ Ticks = GetPerformanceCounter ();
+ Delay = GetPerformanceCounterProperties (NULL, NULL) * NanoSeconds / 1000000000;
+ while (Ticks + Delay < GetPerformanceCounter ());
+ return (UINTN)Delay;
+}
+
+/**
+ Retrieves the current value of a 64-bit free running performance counter.
+
+ Retrieves the current value of a 64-bit free running performance counter. The
+ 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
+EFIAPI
+GetPerformanceCounter (
+ VOID
+ )
+{
+ return ReadItc ();
+}
+
+/**
+ Retrieves the 64-bit frequency in Hz and the range of performance counter
+ values.
+
+ 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.
+
+ @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 (
+ IN UINT64 *StartValue,
+ IN UINT64 *EndValue
+ )
+{
+ PAL_PROC_RETURN PalRet;
+ UINT64 BaseFrequence;
+
+ PalRet = CallPalProcStatic (13, 0, 0, 0);
+ ASSERT (PalRet.Status == 0);
+ BaseFrequence = PalRet.r9;
+
+ PalRet = CallPalProcStatic (14, 0, 0, 0);
+ ASSERT (PalRet.Status == 0);
+
+ *StartValue = 0;
+ *EndValue = (UINT64)(-1);
+ return BaseFrequence * (PalRet.r11 >> 32) / (UINT32)PalRet.r11;
+}
diff --git a/MdePkg/Library/BaseTimerLibLocalApic/Ipf/ReadItc.s b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/ReadItc.s new file mode 100644 index 0000000000..383bb242ba --- /dev/null +++ b/MdePkg/Library/BaseTimerLibLocalApic/Ipf/ReadItc.s @@ -0,0 +1,25 @@ +/// @file
+/// Contains an implementation of ReadItc on Itanium-based architecture.
+///
+/// Copyright (c) 2006, 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.
+///
+/// Module Name: ReadItc.s
+///
+///
+
+.auto
+.text
+
+.proc ReadItc
+.type ReadItc, @function
+ReadItc::
+ mov r8 = ar.itc
+ br.ret.sptk.many b0
+.endp ReadItc
\ No newline at end of file |