@@ -86,13 +86,6 @@ [PcdsFixedAtBuild.common]
# ARM Primecells
#
- ## SP804 DualTimer
- gArmPlatformTokenSpaceGuid.PcdSP804TimerFrequencyInMHz|1|UINT32|0x0000001D
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPeriodicInterruptNum|0|UINT32|0x0000001E
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPeriodicBase|0|UINT32|0x0000002A
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPerformanceBase|0|UINT32|0x0000002B
- gArmPlatformTokenSpaceGuid.PcdSP804TimerMetronomeBase|0|UINT32|0x0000002C
-
## SP805 Watchdog
gArmPlatformTokenSpaceGuid.PcdSP805WatchdogBase|0x0|UINT32|0x00000023
gArmPlatformTokenSpaceGuid.PcdSP805WatchdogClockFrequencyInHz|32000|UINT32|0x00000021
deleted file mode 100644
@@ -1,395 +0,0 @@
-/** @file
- Template for Timer Architecture Protocol driver of the ARM flavor
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2011 - 2012, ARM Ltd. All rights reserved.<BR>
-
- 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.
-
-**/
-
-
-#include <PiDxe.h>
-
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/UefiLib.h>
-#include <Library/PcdLib.h>
-#include <Library/IoLib.h>
-
-#include <Protocol/Timer.h>
-#include <Protocol/HardwareInterrupt.h>
-
-#include <Drivers/SP804Timer.h>
-
-#define SP804_TIMER_PERIODIC_BASE ((UINTN)PcdGet32 (PcdSP804TimerPeriodicBase))
-#define SP804_TIMER_METRONOME_BASE ((UINTN)PcdGet32 (PcdSP804TimerMetronomeBase))
-#define SP804_TIMER_PERFORMANCE_BASE ((UINTN)PcdGet32 (PcdSP804TimerPerformanceBase))
-
-// The notification function to call on every timer interrupt.
-EFI_TIMER_NOTIFY mTimerNotifyFunction = (EFI_TIMER_NOTIFY)NULL;
-EFI_EVENT EfiExitBootServicesEvent = (EFI_EVENT)NULL;
-
-// The current period of the timer interrupt
-UINT64 mTimerPeriod = 0;
-
-// Cached copy of the Hardware Interrupt protocol instance
-EFI_HARDWARE_INTERRUPT_PROTOCOL *gInterrupt = NULL;
-
-// Cached interrupt vector
-UINTN gVector;
-
-
-/**
-
- C Interrupt Handler called in the interrupt context when Source interrupt is active.
-
-
- @param Source Source of the interrupt. Hardware routing off a specific platform defines
- what source means.
-
- @param SystemContext Pointer to system register context. Mostly used by debuggers and will
- update the system context after the return from the interrupt if
- modified. Don't change these values unless you know what you are doing
-
-**/
-VOID
-EFIAPI
-TimerInterruptHandler (
- IN HARDWARE_INTERRUPT_SOURCE Source,
- IN EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- EFI_TPL OriginalTPL;
-
- //
- // DXE core uses this callback for the EFI timer tick. The DXE core uses locks
- // that raise to TPL_HIGH and then restore back to current level. Thus we need
- // to make sure TPL level is set to TPL_HIGH while we are handling the timer tick.
- //
- OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
-
- // If the interrupt is shared then we must check if this interrupt source is the one associated to this Timer
- if (MmioRead32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_MSK_INT_STS_REG) != 0) {
- // Clear the periodic interrupt
- MmioWrite32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_INT_CLR_REG, 0);
-
- // Signal end of interrupt early to help avoid losing subsequent ticks from long duration handlers
- gInterrupt->EndOfInterrupt (gInterrupt, Source);
-
- if (mTimerNotifyFunction) {
- mTimerNotifyFunction (mTimerPeriod);
- }
- }
-
- gBS->RestoreTPL (OriginalTPL);
-}
-
-/**
- This function registers the handler NotifyFunction so it is called every time
- the timer interrupt fires. It also passes the amount of time since the last
- handler call to the NotifyFunction. If NotifyFunction is NULL, then the
- handler is unregistered. If the handler is registered, then EFI_SUCCESS is
- returned. If the CPU does not support registering a timer interrupt handler,
- then EFI_UNSUPPORTED is returned. If an attempt is made to register a handler
- when a handler is already registered, then EFI_ALREADY_STARTED is returned.
- If an attempt is made to unregister a handler when a handler is not registered,
- then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to
- register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ERROR
- is returned.
-
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.
- @param NotifyFunction The function to call when a timer interrupt fires. This
- function executes at TPL_HIGH_LEVEL. The DXE Core will
- register a handler for the timer interrupt, so it can know
- how much time has passed. This information is used to
- signal timer based events. NULL will unregister the handler.
- @retval EFI_SUCCESS The timer handler was registered.
- @retval EFI_UNSUPPORTED The platform does not support timer interrupts.
- @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already
- registered.
- @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not
- previously registered.
- @retval EFI_DEVICE_ERROR The timer handler could not be registered.
-
-**/
-EFI_STATUS
-EFIAPI
-TimerDriverRegisterHandler (
- IN EFI_TIMER_ARCH_PROTOCOL *This,
- IN EFI_TIMER_NOTIFY NotifyFunction
- )
-{
- if ((NotifyFunction == NULL) && (mTimerNotifyFunction == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((NotifyFunction != NULL) && (mTimerNotifyFunction != NULL)) {
- return EFI_ALREADY_STARTED;
- }
-
- mTimerNotifyFunction = NotifyFunction;
-
- return EFI_SUCCESS;
-}
-
-/**
- Make sure all Dual Timers are disabled
-**/
-VOID
-EFIAPI
-ExitBootServicesEvent (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- // Disable 'Periodic Operation' timer if enabled
- if (MmioRead32(SP804_TIMER_PERIODIC_BASE + SP804_TIMER_CONTROL_REG) & SP804_TIMER_CTRL_ENABLE) {
- MmioAnd32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_CONTROL_REG, 0);
- }
-
- // Disable 'Metronome/Delay' timer if enabled
- if (MmioRead32(SP804_TIMER_METRONOME_BASE + SP804_TIMER_CONTROL_REG) & SP804_TIMER_CTRL_ENABLE) {
- MmioAnd32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CONTROL_REG, 0);
- }
-
- // Disable 'Performance' timer if enabled
- if (MmioRead32(SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CONTROL_REG) & SP804_TIMER_CTRL_ENABLE) {
- MmioAnd32 (SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CONTROL_REG, 0);
- }
-}
-
-/**
-
- 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, or it must adjust the
- interrupt controller so that a CPU interrupt is not generated when the timer
- interrupt fires.
-
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.
- @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If
- the timer hardware is not programmable, then EFI_UNSUPPORTED is
- returned. If the timer is programmable, then the timer period
- will be rounded up to the nearest timer period that is supported
- by the timer hardware. If TimerPeriod is set to 0, then the
- timer interrupts will be disabled.
-
-
- @retval EFI_SUCCESS The timer period was changed.
- @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.
- @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.
-
-**/
-EFI_STATUS
-EFIAPI
-TimerDriverSetTimerPeriod (
- IN EFI_TIMER_ARCH_PROTOCOL *This,
- IN UINT64 TimerPeriod
- )
-{
- EFI_STATUS Status;
- UINT64 TimerTicks;
-
- // always disable the timer
- MmioAnd32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_CONTROL_REG, ~SP804_TIMER_CTRL_ENABLE);
-
- if (TimerPeriod == 0) {
- // Leave timer disabled from above, and...
-
- // Disable timer 0/1 interrupt for a TimerPeriod of 0
- Status = gInterrupt->DisableInterruptSource (gInterrupt, gVector);
- } else {
- // Convert TimerPeriod into 1MHz clock counts (us units = 100ns units * 10)
- TimerTicks = DivU64x32 (TimerPeriod, 10);
- TimerTicks = MultU64x32 (TimerTicks, PcdGet32(PcdSP804TimerFrequencyInMHz));
-
- // if it's larger than 32-bits, pin to highest value
- if (TimerTicks > 0xffffffff) {
- TimerTicks = 0xffffffff;
- }
-
- // Program the SP804 timer with the new count value
- MmioWrite32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_LOAD_REG, TimerTicks);
-
- // enable the timer
- MmioOr32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_ENABLE);
-
- // enable timer 0/1 interrupts
- Status = gInterrupt->EnableInterruptSource (gInterrupt, gVector);
- }
-
- // Save the new timer period
- mTimerPeriod = TimerPeriod;
- return Status;
-}
-
-/**
- This function retrieves the period of timer interrupts in 100 ns units,
- returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod
- is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is
- returned, then the timer is currently disabled.
-
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.
- @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If
- 0 is returned, then the timer is currently disabled.
-
-
- @retval EFI_SUCCESS The timer period was returned in TimerPeriod.
- @retval EFI_INVALID_PARAMETER TimerPeriod is NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-TimerDriverGetTimerPeriod (
- IN EFI_TIMER_ARCH_PROTOCOL *This,
- OUT UINT64 *TimerPeriod
- )
-{
- if (TimerPeriod == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- *TimerPeriod = mTimerPeriod;
- return EFI_SUCCESS;
-}
-
-/**
- This function generates a soft timer interrupt. If the platform does not support soft
- timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.
- If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()
- service, then a soft timer interrupt will be generated. If the timer interrupt is
- enabled when this service is called, then the registered handler will be invoked. The
- registered handler should not be able to distinguish a hardware-generated timer
- interrupt from a software-generated timer interrupt.
-
- @param This The EFI_TIMER_ARCH_PROTOCOL instance.
-
- @retval EFI_SUCCESS The soft timer interrupt was generated.
- @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.
-
-**/
-EFI_STATUS
-EFIAPI
-TimerDriverGenerateSoftInterrupt (
- IN EFI_TIMER_ARCH_PROTOCOL *This
- )
-{
- return EFI_UNSUPPORTED;
-}
-
-/**
- Interface structure for the Timer Architectural Protocol.
-
- @par Protocol Description:
- This protocol provides the services to initialize a periodic timer
- interrupt, and to register a handler that is called each time the timer
- interrupt fires. It may also provide a service to adjust the rate of the
- periodic timer interrupt. When a timer interrupt occurs, the handler is
- passed the amount of time that has passed since the previous timer
- interrupt.
-
- @param RegisterHandler
- Registers a handler that will be called each time the
- timer interrupt fires. TimerPeriod defines the minimum
- time between timer interrupts, so TimerPeriod will also
- be the minimum time between calls to the registered
- handler.
-
- @param SetTimerPeriod
- Sets the period of the timer interrupt in 100 nS units.
- This function is optional, and may return EFI_UNSUPPORTED.
- If this function is supported, then the timer period will
- be rounded up to the nearest supported timer period.
-
-
- @param GetTimerPeriod
- Retrieves the period of the timer interrupt in 100 nS units.
-
- @param GenerateSoftInterrupt
- Generates a soft timer interrupt that simulates the firing of
- the timer interrupt. This service can be used to invoke the registered handler if the timer interrupt has been masked for
- a period of time.
-
-**/
-EFI_TIMER_ARCH_PROTOCOL gTimer = {
- TimerDriverRegisterHandler,
- TimerDriverSetTimerPeriod,
- TimerDriverGetTimerPeriod,
- TimerDriverGenerateSoftInterrupt
-};
-
-
-/**
- Initialize the state information for the Timer Architectural Protocol and
- the Timer Debug support protocol that allows the debugger to break into a
- running program.
-
- @param ImageHandle of the loaded driver
- @param SystemTable Pointer to the System Table
-
- @retval EFI_SUCCESS Protocol registered
- @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
- @retval EFI_DEVICE_ERROR Hardware problems
-
-**/
-EFI_STATUS
-EFIAPI
-TimerInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_HANDLE Handle = NULL;
- EFI_STATUS Status;
-
- // Set the interrupt timer number
- gVector = PcdGet32(PcdSP804TimerPeriodicInterruptNum);
-
- // Find the interrupt controller protocol. ASSERT if not found.
- Status = gBS->LocateProtocol (&gHardwareInterruptProtocolGuid, NULL, (VOID **)&gInterrupt);
- ASSERT_EFI_ERROR (Status);
-
- // Disable the timer
- Status = TimerDriverSetTimerPeriod (&gTimer, 0);
- ASSERT_EFI_ERROR (Status);
-
- // Install interrupt handler
- Status = gInterrupt->RegisterInterruptSource (gInterrupt, gVector, TimerInterruptHandler);
- ASSERT_EFI_ERROR (Status);
-
- // configure timer 0 for periodic operation, 32 bits, no prescaler, and interrupt enabled
- MmioWrite32 (SP804_TIMER_PERIODIC_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_PERIODIC | SP804_TIMER_CTRL_32BIT | SP804_PRESCALE_DIV_1 | SP804_TIMER_CTRL_INT_ENABLE);
-
- // Set up default timer
- Status = TimerDriverSetTimerPeriod (&gTimer, FixedPcdGet32(PcdTimerPeriod)); // TIMER_DEFAULT_PERIOD
- ASSERT_EFI_ERROR (Status);
-
- // Install the Timer Architectural Protocol onto a new handle
- Status = gBS->InstallMultipleProtocolInterfaces(
- &Handle,
- &gEfiTimerArchProtocolGuid, &gTimer,
- NULL
- );
- ASSERT_EFI_ERROR(Status);
-
- // Register for an ExitBootServicesEvent
- Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_NOTIFY, ExitBootServicesEvent, NULL, &EfiExitBootServicesEvent);
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
deleted file mode 100644
@@ -1,59 +0,0 @@
-#/** @file
-#
-# Component description file for Timer module
-#
-# Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
-# 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 = ArmVeTimerDxe
- FILE_GUID = a73d663d-a491-4278-9a69-9521be3379f2
- MODULE_TYPE = DXE_DRIVER
- VERSION_STRING = 1.0
-
- ENTRY_POINT = TimerInitialize
-
-[Sources.common]
- SP804Timer.c
-
-[Packages]
- MdePkg/MdePkg.dec
- EmbeddedPkg/EmbeddedPkg.dec
- ArmPkg/ArmPkg.dec
- ArmPlatformPkg/ArmPlatformPkg.dec
-
-[LibraryClasses]
- BaseLib
- UefiRuntimeServicesTableLib
- UefiLib
- UefiBootServicesTableLib
- BaseMemoryLib
- DebugLib
- UefiDriverEntryPoint
- IoLib
-
-[Guids]
-
-[Protocols]
- gEfiTimerArchProtocolGuid
- gHardwareInterruptProtocolGuid
-
-[Pcd.common]
- gArmPlatformTokenSpaceGuid.PcdSP804TimerFrequencyInMHz
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPeriodicInterruptNum
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPeriodicBase
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPerformanceBase
- gArmPlatformTokenSpaceGuid.PcdSP804TimerMetronomeBase
- gEmbeddedTokenSpaceGuid.PcdTimerPeriod
-
-[Depex]
- gHardwareInterruptProtocolGuid
deleted file mode 100644
@@ -1,57 +0,0 @@
-/** @file
-*
-* Copyright (c) 2011, ARM Limited. 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 _SP804_TIMER_H__
-#define _SP804_TIMER_H__
-
-// SP804 Timer constants
-// Note: The SP804 Timer module comprises two timers, Timer_0 and Timer_1
-// These timers are identical and all their registers have an offset of 0x20
-// i.e. SP804_TIMER_0_LOAD_REG = 0x00 and SP804_TIMER_1_LOAD_REG = 0x20
-// Therefore, define all registers only once and adjust the base addresses by 0x20
-#define SP804_TIMER_LOAD_REG 0x00
-#define SP804_TIMER_CURRENT_REG 0x04
-#define SP804_TIMER_CONTROL_REG 0x08
-#define SP804_TIMER_INT_CLR_REG 0x0C
-#define SP804_TIMER_RAW_INT_STS_REG 0x10
-#define SP804_TIMER_MSK_INT_STS_REG 0x14
-#define SP804_TIMER_BG_LOAD_REG 0x18
-
-// Timer control register bit definitions
-#define SP804_TIMER_CTRL_ONESHOT BIT0
-#define SP804_TIMER_CTRL_32BIT BIT1
-#define SP804_TIMER_CTRL_PRESCALE_MASK (BIT3|BIT2)
-#define SP804_PRESCALE_DIV_1 0
-#define SP804_PRESCALE_DIV_16 BIT2
-#define SP804_PRESCALE_DIV_256 BIT3
-#define SP804_TIMER_CTRL_INT_ENABLE BIT5
-#define SP804_TIMER_CTRL_PERIODIC BIT6
-#define SP804_TIMER_CTRL_ENABLE BIT7
-
-// Other SP804 Timer definitions
-#define SP804_MAX_TICKS 0xFFFFFFFF
-
-// SP810 System Controller constants
-#define SP810_SYS_CTRL_REG 0x00
-#define SP810_SYS_CTRL_TIMER0_TIMCLK BIT15 // 0=REFCLK, 1=TIMCLK
-#define SP810_SYS_CTRL_TIMER0_EN BIT16
-#define SP810_SYS_CTRL_TIMER1_TIMCLK BIT17 // 0=REFCLK, 1=TIMCLK
-#define SP810_SYS_CTRL_TIMER1_EN BIT18
-#define SP810_SYS_CTRL_TIMER2_TIMCLK BIT19 // 0=REFCLK, 1=TIMCLK
-#define SP810_SYS_CTRL_TIMER2_EN BIT20
-#define SP810_SYS_CTRL_TIMER3_TIMCLK BIT21 // 0=REFCLK, 1=TIMCLK
-#define SP810_SYS_CTRL_TIMER3_EN BIT22
-
-#endif
deleted file mode 100644
@@ -1,256 +0,0 @@
-/** @file
-
- Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2011 - 2014, ARM Limited. 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.
-
-**/
-
-#include <Base.h>
-
-#include <Library/BaseLib.h>
-#include <Library/TimerLib.h>
-#include <Library/DebugLib.h>
-#include <Library/PcdLib.h>
-#include <Library/IoLib.h>
-#include <Drivers/SP804Timer.h>
-
-#define SP804_TIMER_METRONOME_BASE ((UINTN)PcdGet32 (PcdSP804TimerMetronomeBase))
-#define SP804_TIMER_PERFORMANCE_BASE ((UINTN)PcdGet32 (PcdSP804TimerPerformanceBase))
-
-// Setup SP810's Timer2 for managing delay functions. And Timer3 for Performance counter
-// Note: ArmVE's Timer0 and Timer1 are used by TimerDxe.
-RETURN_STATUS
-EFIAPI
-TimerConstructor (
- VOID
- )
-{
- // Check if the Metronome Timer is already initialized
- if ((MmioRead32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CONTROL_REG) & SP804_TIMER_CTRL_ENABLE) == 0) {
- // Configure the Metronome Timer for free running operation, 32 bits, no prescaler, and interrupt disabled
- MmioWrite32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_32BIT | SP804_PRESCALE_DIV_1);
-
- // Start the Metronome Timer ticking
- MmioOr32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_ENABLE);
- }
-
- // Check if the Performance Timer is already initialized
- if ((MmioRead32 (SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CONTROL_REG) & SP804_TIMER_CTRL_ENABLE) == 0) {
- // Configure the Performance timer for free running operation, 32 bits, no prescaler, interrupt disabled
- MmioWrite32 (SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_32BIT | SP804_PRESCALE_DIV_1);
-
- // Start the Performance Timer ticking
- MmioOr32 (SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_ENABLE);
- }
-
- return RETURN_SUCCESS;
-}
-
-/**
- Stalls the CPU for at least the given number of microseconds.
-
- Stalls the CPU for the number of microseconds specified by MicroSeconds.
- The hardware timer is 32 bits.
- The maximum possible delay is (0xFFFFFFFF / TimerFrequencyMHz), i.e. ([32bits] / FreqInMHz)
- For example:
- +----------------+------------+----------+----------+
- | TimerFrequency | MaxDelay | MaxDelay | MaxDelay |
- | (MHz) | (us) | (s) | (min) |
- +----------------+------------+----------+----------+
- | 1 | 0xFFFFFFFF | 4294 | 71.5 |
- | 5 | 0x33333333 | 859 | 14.3 |
- | 10 | 0x19999999 | 429 | 7.2 |
- | 50 | 0x051EB851 | 86 | 1.4 |
- +----------------+------------+----------+----------+
- If it becomes necessary to support higher delays, then consider using the
- real time clock.
-
- During this delay, the cpu is not yielded to any other process, with one exception:
- events that are triggered off a timer and which execute at a higher TPL than
- this function. These events may call MicroSecondDelay (or NanoSecondDelay) to
- fulfil their own needs.
- Therefore, this function must be re-entrant, as it may be interrupted and re-started.
-
- @param MicroSeconds The minimum number of microseconds to delay.
-
- @return The value of MicroSeconds inputted.
-
-**/
-UINTN
-EFIAPI
-MicroSecondDelay (
- IN UINTN MicroSeconds
- )
-{
- UINT64 DelayTicks64; // Convert from microseconds to timer ticks, more bits to detect over-range conditions.
- UINTN DelayTicks; // Convert from microseconds to timer ticks, native size for general calculations.
- UINTN StartTicks; // Timer value snapshot at the start of the delay
- UINTN TargetTicks; // Timer value to signal the end of the delay
- UINTN CurrentTicks; // Current value of the 64-bit timer value at any given moment
-
- // If we snapshot the timer at the start of the delay function then we minimise unaccounted overheads.
- StartTicks = MmioRead32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CURRENT_REG);
-
- // We are operating at the limit of 32bits. For the range checking work in 64 bits to avoid overflows.
- DelayTicks64 = MultU64x32((UINT64)MicroSeconds, PcdGet32(PcdSP804TimerFrequencyInMHz));
-
- // We are limited to 32 bits.
- // If the specified delay is exactly equal to the max range of the timer,
- // then the start will be equal to the stop plus one timer overflow (wrap-around).
- // To avoid having to check for that, reduce the maximum acceptable range by 1 tick,
- // i.e. reject delays equal or greater than the max range of the timer.
- if (DelayTicks64 >= (UINT64)SP804_MAX_TICKS) {
- DEBUG((EFI_D_ERROR,"MicroSecondDelay: ERROR: MicroSeconds=%d exceed SP804 count range. Max MicroSeconds=%d\n",
- MicroSeconds,
- ((UINTN)SP804_MAX_TICKS/PcdGet32(PcdSP804TimerFrequencyInMHz))));
- }
- ASSERT(DelayTicks64 < (UINT64)SP804_MAX_TICKS);
-
- // From now on do calculations only in native bit size.
- DelayTicks = (UINTN)DelayTicks64;
-
- // Calculate the target value of the timer.
-
- //Note: SP804 timer is counting down
- if (StartTicks >= DelayTicks) {
- // In this case we do not expect a wrap-around of the timer to occur.
- // CurrentTicks must be less than StartTicks and higher than TargetTicks.
- // If this is not the case, then the delay has been reached and may even have been exceeded if this
- // function was suspended by a higher priority interrupt.
-
- TargetTicks = StartTicks - DelayTicks;
-
- do {
- CurrentTicks = MmioRead32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CURRENT_REG);
- } while ((CurrentTicks > TargetTicks) && (CurrentTicks <= StartTicks));
-
- } else {
- // In this case TargetTicks is larger than StartTicks.
- // This means we expect a wrap-around of the timer to occur and we must wait for it.
- // Before the wrap-around, CurrentTicks must be less than StartTicks and less than TargetTicks.
- // After the wrap-around, CurrentTicks must be larger than StartTicks and larger than TargetTicks.
- // If this is not the case, then the delay has been reached and may even have been exceeded if this
- // function was suspended by a higher priority interrupt.
-
- // The order of operations is essential to avoid arithmetic overflow problems
- TargetTicks = ((UINTN)SP804_MAX_TICKS - DelayTicks) + StartTicks;
-
- // First wait for the wrap-around to occur
- do {
- CurrentTicks = MmioRead32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CURRENT_REG);
- } while (CurrentTicks <= StartTicks);
-
- // Then wait for the target
- do {
- CurrentTicks = MmioRead32 (SP804_TIMER_METRONOME_BASE + SP804_TIMER_CURRENT_REG);
- } while (CurrentTicks > TargetTicks);
- }
-
- return MicroSeconds;
-}
-
-/**
- Stalls the CPU for at least the given number of nanoseconds.
-
- Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
-
- When the timer frequency is 1MHz, each tick corresponds to 1 microsecond.
- Therefore, the nanosecond delay will be rounded up to the nearest 1 microsecond.
-
- @param NanoSeconds The minimum number of nanoseconds to delay.
-
- @return The value of NanoSeconds inputted.
-
-**/
-UINTN
-EFIAPI
-NanoSecondDelay (
- IN UINTN NanoSeconds
- )
-{
- UINTN MicroSeconds;
-
- // Round up to 1us Tick Number
- MicroSeconds = NanoSeconds / 1000;
- MicroSeconds += ((NanoSeconds % 1000) == 0) ? 0 : 1;
-
- MicroSecondDelay (MicroSeconds);
-
- return NanoSeconds;
-}
-
-/**
- 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
- )
-{
- // Free running 64-bit/32-bit counter is needed here.
- // Don't think we need this to boot, just to do performance profile
- UINT64 Value;
- Value = MmioRead32 (SP804_TIMER_PERFORMANCE_BASE + SP804_TIMER_CURRENT_REG);
- return Value;
-}
-
-
-/**
- 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
- )
-{
- if (StartValue != NULL) {
- // Timer starts with the reload value
- *StartValue = 0xFFFFFFFF;
- }
-
- if (EndValue != NULL) {
- // Timer counts down to 0x0
- *EndValue = (UINT64)0ULL;
- }
-
- return PcdGet64 (PcdEmbeddedPerformanceCounterFrequencyInHz);
-}
deleted file mode 100644
@@ -1,44 +0,0 @@
-#/** @file
-# Timer library implementation
-#
-#
-# Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
-# 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 = SP804TimerLib
- FILE_GUID = 09cefa99-0d07-487f-a651-fb44f094b1c7
- MODULE_TYPE = BASE
- VERSION_STRING = 1.0
- LIBRARY_CLASS = TimerLib
-
- CONSTRUCTOR = TimerConstructor
-
-[Sources.common]
- SP804TimerLib.c
-
-[Packages]
- MdePkg/MdePkg.dec
- ArmPkg/ArmPkg.dec
- ArmPlatformPkg/ArmPlatformPkg.dec
- EmbeddedPkg/EmbeddedPkg.dec
-
-[LibraryClasses]
- DebugLib
- IoLib
- BaseLib
-
-[Pcd]
- gArmPlatformTokenSpaceGuid.PcdSP804TimerFrequencyInMHz
- gArmPlatformTokenSpaceGuid.PcdSP804TimerPerformanceBase
- gArmPlatformTokenSpaceGuid.PcdSP804TimerMetronomeBase
- gEmbeddedTokenSpaceGuid.PcdEmbeddedPerformanceCounterFrequencyInHz
None of the platforms we support use these so remove them. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by-if-no-comments-by-15-Dec: Leif Lindholm <leif.lindholm@linaro.org> --- ArmPlatformPkg/ArmPlatformPkg.dec | 7 - ArmPlatformPkg/Drivers/SP804TimerDxe/SP804Timer.c | 395 -------------------- ArmPlatformPkg/Drivers/SP804TimerDxe/SP804TimerDxe.inf | 59 --- ArmPlatformPkg/Include/Drivers/SP804Timer.h | 57 --- ArmPlatformPkg/Library/SP804TimerLib/SP804TimerLib.c | 256 ------------- ArmPlatformPkg/Library/SP804TimerLib/SP804TimerLib.inf | 44 --- 6 files changed, 818 deletions(-) -- 2.11.0 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel