mirror of https://github.com/acidanthera/audk.git
Update to support a single stack. GCC update will follow.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9695 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
AJFISH
parent
cc726b9ffd
commit
db5c4f9e15
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@ -93,7 +93,6 @@ RegisterInterruptSource (
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}
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gRegisteredInterruptHandlers[Source] = Handler;
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return This->EnableInterruptSource(This, Source);
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}
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@ -53,33 +53,9 @@ stack_pointer_setup
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LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */
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add r4, r2, r3
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//Enter IRQ mode and set up IRQ stack pointer
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mov r0,#0x12|0x80|0x40
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msr CPSR_c,r0
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mov r13,r4
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//Enter Abort mode and set up Abort stack pointer
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mov r0,#0x17|0x80|0x40
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msr CPSR_c,r0
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sub r4, r4, #0x400
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mov r13,r4
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//Enter Undefined mode and set up Undefined stack pointer
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mov r0,#0x1b|0x80|0x40
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msr CPSR_c,r0
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sub r4, r4, #0x400
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mov r13,r4
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//Enter SVC mode and set up SVC stack pointer
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mov r0,#0x13|0x80|0x40
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msr CPSR_c,r0
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sub r4, r4, #0x400
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mov r13,r4
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//Enter System mode and set up System stack pointer
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mov r0,#0x1f|0x80|0x40
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msr CPSR_c,r0
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sub r4, r4, #0x400
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mov r13,r4
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// Call C entry point
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@ -82,7 +82,7 @@ InitCache (
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MemoryTable[4].Length = 0;
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MemoryTable[4].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
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ArmConfigureMmu(MemoryTable, &TranslationTableBase, &TranslationTableSize);
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ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);
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BuildMemoryAllocationHob((EFI_PHYSICAL_ADDRESS)(UINTN)TranslationTableBase, TranslationTableSize, EfiBootServicesData);
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}
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@ -53,6 +53,17 @@ volatile UINT32 TIER;
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// Cached interrupt vector
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volatile UINTN gVector;
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/**
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C Interrupt Handler calledin the interrupt context when Source interrupt is active.
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@param Source Source of the interrupt. Hardware routing off a specific platform defines
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what source means.
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@param SystemContext Pointer to system register context. Mostly used by debuggers and will
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update the system context after the return from the interrupt if
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modified. Don't change these values unless you know what you are doing
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**/
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VOID
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EFIAPI
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TimerInterruptHandler (
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@ -60,6 +71,15 @@ TimerInterruptHandler (
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IN EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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EFI_TPL OriginalTPL;
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//
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// DXE core uses this callback for the EFI timer tick. The DXE core uses locks
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// that raise to TPL_HIGH and then restore back to current level. Thus we need
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// to make sure TPL level is set to TPL_HIGH while we are handling the timer tick.
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//
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OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
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if (mTimerPeriodicCallback) {
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mTimerPeriodicCallback(SystemContext);
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}
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@ -73,8 +93,39 @@ TimerInterruptHandler (
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// Poll interrupt status bits to ensure clearing
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while ((MmioRead32(TISR) & TISR_ALL_INTERRUPT_MASK) != TISR_NO_INTERRUPTS_PENDING);
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gBS->RestoreTPL (OriginalTPL);
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}
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/**
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This function registers the handler NotifyFunction so it is called every time
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the timer interrupt fires. It also passes the amount of time since the last
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handler call to the NotifyFunction. If NotifyFunction is NULL, then the
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handler is unregistered. If the handler is registered, then EFI_SUCCESS is
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returned. If the CPU does not support registering a timer interrupt handler,
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then EFI_UNSUPPORTED is returned. If an attempt is made to register a handler
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when a handler is already registered, then EFI_ALREADY_STARTED is returned.
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If an attempt is made to unregister a handler when a handler is not registered,
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then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to
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register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ERROR
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is returned.
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@param This The EFI_TIMER_ARCH_PROTOCOL instance.
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@param NotifyFunction The function to call when a timer interrupt fires. This
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function executes at TPL_HIGH_LEVEL. The DXE Core will
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register a handler for the timer interrupt, so it can know
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how much time has passed. This information is used to
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signal timer based events. NULL will unregister the handler.
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@retval EFI_SUCCESS The timer handler was registered.
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@retval EFI_UNSUPPORTED The platform does not support timer interrupts.
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@retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already
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registered.
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@retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not
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previously registered.
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@retval EFI_DEVICE_ERROR The timer handler could not be registered.
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**/
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EFI_STATUS
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EFIAPI
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TimerDriverRegisterHandler (
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@ -95,6 +146,32 @@ TimerDriverRegisterHandler (
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return EFI_SUCCESS;
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}
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/**
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This function adjusts the period of timer interrupts to the value specified
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by TimerPeriod. If the timer period is updated, then the selected timer
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period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If
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the timer hardware is not programmable, then EFI_UNSUPPORTED is returned.
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If an error occurs while attempting to update the timer period, then the
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timer hardware will be put back in its state prior to this call, and
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EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt
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is disabled. This is not the same as disabling the CPU's interrupts.
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Instead, it must either turn off the timer hardware, or it must adjust the
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interrupt controller so that a CPU interrupt is not generated when the timer
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interrupt fires.
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@param This The EFI_TIMER_ARCH_PROTOCOL instance.
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@param TimerPeriod The rate to program the timer interrupt in 100 nS units. If
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the timer hardware is not programmable, then EFI_UNSUPPORTED is
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returned. If the timer is programmable, then the timer period
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will be rounded up to the nearest timer period that is supported
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by the timer hardware. If TimerPeriod is set to 0, then the
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timer interrupts will be disabled.
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@retval EFI_SUCCESS The timer period was changed.
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@retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt.
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@retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error.
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**/
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EFI_STATUS
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EFIAPI
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TimerDriverSetTimerPeriod (
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@ -136,6 +213,21 @@ TimerDriverSetTimerPeriod (
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return Status;
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}
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/**
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This function retrieves the period of timer interrupts in 100 ns units,
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returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod
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is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is
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returned, then the timer is currently disabled.
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@param This The EFI_TIMER_ARCH_PROTOCOL instance.
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@param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If
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0 is returned, then the timer is currently disabled.
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@retval EFI_SUCCESS The timer period was returned in TimerPeriod.
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@retval EFI_INVALID_PARAMETER TimerPeriod is NULL.
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**/
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EFI_STATUS
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EFIAPI
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TimerDriverGetTimerPeriod (
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@ -151,6 +243,21 @@ TimerDriverGetTimerPeriod (
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return EFI_SUCCESS;
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}
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/**
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This function generates a soft timer interrupt. If the platform does not support soft
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timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned.
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If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler()
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service, then a soft timer interrupt will be generated. If the timer interrupt is
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enabled when this service is called, then the registered handler will be invoked. The
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registered handler should not be able to distinguish a hardware-generated timer
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interrupt from a software-generated timer interrupt.
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@param This The EFI_TIMER_ARCH_PROTOCOL instance.
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@retval EFI_SUCCESS The soft timer interrupt was generated.
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@retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts.
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**/
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EFI_STATUS
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EFIAPI
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TimerDriverGenerateSoftInterrupt (
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@ -160,6 +267,7 @@ TimerDriverGenerateSoftInterrupt (
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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TimerDriverRegisterPeriodicCallback (
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@ -180,6 +288,41 @@ TimerDriverRegisterPeriodicCallback (
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return EFI_SUCCESS;
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}
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/**
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Interface stucture for the Timer Architectural Protocol.
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@par Protocol Description:
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This protocol provides the services to initialize a periodic timer
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interrupt, and to register a handler that is called each time the timer
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interrupt fires. It may also provide a service to adjust the rate of the
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periodic timer interrupt. When a timer interrupt occurs, the handler is
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passed the amount of time that has passed since the previous timer
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interrupt.
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@param RegisterHandler
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Registers a handler that will be called each time the
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timer interrupt fires. TimerPeriod defines the minimum
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time between timer interrupts, so TimerPeriod will also
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be the minimum time between calls to the registered
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handler.
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@param SetTimerPeriod
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Sets the period of the timer interrupt in 100 nS units.
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This function is optional, and may return EFI_UNSUPPORTED.
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If this function is supported, then the timer period will
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be rounded up to the nearest supported timer period.
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@param GetTimerPeriod
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Retrieves the period of the timer interrupt in 100 nS units.
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@param GenerateSoftInterrupt
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Generates a soft timer interrupt that simulates the firing of
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the timer interrupt. This service can be used to invoke the
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registered handler if the timer interrupt has been masked for
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a period of time.
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**/
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EFI_TIMER_ARCH_PROTOCOL gTimer = {
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TimerDriverRegisterHandler,
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TimerDriverSetTimerPeriod,
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@ -191,6 +334,20 @@ TIMER_DEBUG_SUPPORT_PROTOCOL gTimerDebugSupport = {
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TimerDriverRegisterPeriodicCallback
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};
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/**
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Initialize the state information for the Timer Architectural Protocol and
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the Timer Debug support protocol that allows the debugger to break into a
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running program.
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@param ImageHandle of the loaded driver
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@param SystemTable Pointer to the System Table
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@retval EFI_SUCCESS Protocol registered
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@retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
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@retval EFI_DEVICE_ERROR Hardware problems
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**/
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EFI_STATUS
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EFIAPI
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TimerInitialize (
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