diff options
Diffstat (limited to 'MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c')
-rw-r--r-- | MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c b/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c deleted file mode 100644 index 2e511704d8..0000000000 --- a/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c +++ /dev/null @@ -1,168 +0,0 @@ -/** @file
- Timer Library functions built upon ITC on IPF.
-
- Copyright (c) 2006 - 2007, 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
-
-**/
-
-
-
-
-/**
- Performs a delay measured as number of ticks.
-
- An internal function to perform a delay measured as number of ticks. It's
- invoked by MicroSecondDelay() and NanoSecondDelay().
-
- @param Delay Number of ticks to delay.
-
-**/
-STATIC
-VOID
-InternalIpfDelay (
- IN INT64 Delay
- )
-{
- INT64 Ticks;
-
- //
- // The target timer count is calculated here
- //
- Ticks = (INT64)AsmReadItc () + Delay;
-
- //
- // Wait until time out
- // Delay > 2^63 could not be handled by this function
- // Timer wrap-arounds are handled correctly by this function
- //
- while (Ticks - (INT64)AsmReadItc() >= 0);
-}
-
-/**
- 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 MicroSeconds
-
-**/
-UINTN
-EFIAPI
-MicroSecondDelay (
- IN UINTN MicroSeconds
- )
-{
- InternalIpfDelay (
- GetPerformanceCounterProperties (NULL, NULL) *
- MicroSeconds /
- 1000000
- );
- return MicroSeconds;
-}
-
-/**
- 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 NanoSeconds
-
-**/
-UINTN
-EFIAPI
-NanoSecondDelay (
- IN UINTN NanoSeconds
- )
-{
- InternalIpfDelay (
- GetPerformanceCounterProperties (NULL, NULL) *
- NanoSeconds /
- 1000000000
- );
- return NanoSeconds;
-}
-
-/**
- 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 AsmReadItc ();
-}
-
-/**
- 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 (
- OUT UINT64 *StartValue, OPTIONAL
- OUT UINT64 *EndValue OPTIONAL
- )
-{
- PAL_CALL_RETURN PalRet;
- UINT64 BaseFrequence;
-
- PalRet = PalCallStatic (NULL, 13, 0, 0, 0);
- ASSERT (PalRet.Status == 0);
- BaseFrequence = PalRet.r9;
-
- PalRet = PalCallStatic (NULL, 14, 0, 0, 0);
- ASSERT (PalRet.Status == 0);
-
- if (StartValue != NULL) {
- *StartValue = 0;
- }
-
- if (EndValue != NULL) {
- *EndValue = (UINT64)(-1);
- }
-
- return BaseFrequence * (PalRet.r11 >> 32) / (UINT32)PalRet.r11;
-}
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