ArmDisableBranchPrediction (
VOID
);
-
+
+VOID
+EFIAPI
+ArmDataMemoryBarrier (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmDataSyncronizationBarrier (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmInstructionSynchronizationBarrier (
+ VOID
+ );
+
#endif // __ARM_LIB__
ArmEnableDataCache();
ArmEnableMmu();
}
+
+
+VOID
+EFIAPI
+ArmDataMemoryBarrier (
+ VOID
+ )
+{
+ // Should move to assembly with the
+}
+
+VOID
+EFIAPI
+ArmDataSyncronizationBarrier (
+ VOID
+ )
+{
+// MOV R0, #0
+// MCR P15, #0, R0, C7, C10, #4}
+}
+
+
+VOID
+EFIAPI
+ArmInstructionSynchronizationBarrier (
+ VOID
+ )
+{
+}
+
+
.globl ASM_PFX(ArmDisableInstructionCache)
.globl ASM_PFX(ArmEnableBranchPrediction)
.globl ASM_PFX(ArmDisableBranchPrediction)
+.globl ASM_PFX(ArmDataMemoryBarrier)
+.globl ASM_PFX(ArmDataSyncronizationBarrier)
+.globl ASM_PFX(ArmInstructionSynchronizationBarrier)
+
.set DC_ON, (0x1<<2)
.set IC_ON, (0x1<<12)
mcr p15, 0, r0, c1, c0, 0
bx LR
+ASM_PFX(ArmDataMemoryBarrier):
+ mov R0, #0
+ mcr P15, #0, R0, C7, C10, #5
+ bx LR
+
+ASM_PFX(ArmDataSyncronizationBarrier):
+ mov R0, #0
+ mcr P15, #0, R0, C7, C10, #4
+ bx LR
+
+ASM_PFX(ArmInstructionSynchronizationBarrier):
+ mov R0, #0
+ mcr P15, #0, R0, C7, C5, #4
+ bx LR
+
+
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
EXPORT ArmDisableInstructionCache
EXPORT ArmEnableBranchPrediction
EXPORT ArmDisableBranchPrediction
+ EXPORT ArmDataMemoryBarrier
+ EXPORT ArmDataSyncronizationBarrier
+ EXPORT ArmInstructionSynchronizationBarrier
DC_ON EQU ( 0x1:SHL:2 )
mcr p15, 0, r0, c1, c0, 0
bx LR
+ASM_PFX(ArmDataMemoryBarrier):
+ mov R0, #0
+ mcr P15, #0, R0, C7, C10, #5
+ bx LR
+
+ASM_PFX(ArmDataSyncronizationBarrier):
+ mov R0, #0
+ mcr P15, #0, R0, C7, C10, #4
+ bx LR
+
+ASM_PFX(ArmInstructionSynchronizationBarrier):
+ MOV R0, #0
+ MCR P15, #0, R0, C7, C5, #4
+ bx LR
+
END
ArmEnableDataCache();
ArmEnableMmu();
}
+
+
+VOID
+EFIAPI
+ArmDataMemoryBarrier (
+ VOID
+ )
+{
+}
+
+VOID
+EFIAPI
+ArmDataSyncronizationBarrier (
+ VOID
+ )
+{
+}
+
+VOID
+EFIAPI
+ArmInstructionSynchronizationBarrier (
+ VOID
+ )
+{
+}
+
+
.globl ASM_PFX(ArmEnableBranchPrediction)
.globl ASM_PFX(ArmDisableBranchPrediction)
.globl ASM_PFX(ArmV7AllDataCachesOperation)
+.globl ASM_PFX(ArmDataMemoryBarrier)
+.globl ASM_PFX(ArmDataSyncronizationBarrier)
+.globl ASM_PFX(ArmInstructionSynchronizationBarrier)
+
.set DC_ON, (0x1<<2)
.set IC_ON, (0x1<<12)
ldmfd SP!, {r4-r12, lr}
bx LR
+ASM_PFX(ArmDataMemoryBarrier):
+ dmb
+ bx LR
+
+ASM_PFX(ArmDataSyncronizationBarrier):
+ dsb
+ bx LR
+
+ASM_PFX(ArmInstructionSynchronizationBarrier):
+ isb
+ bx LR
+
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
EXPORT ArmEnableBranchPrediction
EXPORT ArmDisableBranchPrediction
EXPORT ArmV7AllDataCachesOperation
+ EXPORT ArmDataMemoryBarrier
+ EXPORT ArmDataSyncronizationBarrier
+ EXPORT ArmInstructionSynchronizationBarrier
+
DC_ON EQU ( 0x1:SHL:2 )
IC_ON EQU ( 0x1:SHL:12 )
LDMFD SP!, {r4-r12, lr}
BX LR
+
+ArmDataMemoryBarrier
+ DMB
+ BX LR
+
+ArmDataSyncronizationBarrier
+ DSB
+ BX LR
+
+ArmInstructionSynchronizationBarrier
+ ISB
+ BX LR
+
END
/** @file\r
- Template for Metronome Architecture Protocol driver of the ARM flavor\r
+ Handle OMAP35xx interrupt controller \r
\r
- Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r
+ Copyright (c) 2008-2010, Apple Inc. All rights reserved.\r
\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
#include <Library/UefiLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/IoLib.h>\r
+#include <Library/ArmLib.h>\r
\r
#include <Protocol/Cpu.h>\r
#include <Protocol/HardwareInterrupt.h>\r
**/\r
EFI_STATUS\r
EFIAPI\r
-DisableInterruptSource(\r
+DisableInterruptSource (\r
IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r
IN HARDWARE_INTERRUPT_SOURCE Source\r
)\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ Signal to the hardware that the End Of Intrrupt state \r
+ has been reached.\r
+\r
+ @param This Instance pointer for this protocol\r
+ @param Source Hardware source of the interrupt\r
+\r
+ @retval EFI_SUCCESS Source interrupt EOI'ed.\r
+ @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+EndOfInterrupt (\r
+ IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r
+ IN HARDWARE_INTERRUPT_SOURCE Source\r
+ )\r
+{\r
+ MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);\r
+ ArmDataSyncronizationBarrier ();\r
+ return EFI_SUCCESS;\r
+}\r
\r
\r
/**\r
UINT32 Vector;\r
HARDWARE_INTERRUPT_HANDLER InterruptHandler;\r
\r
- Vector = MmioRead32(INTCPS_SIR_IRQ) & INTCPS_SIR_IRQ_MASK;\r
+ Vector = MmioRead32 (INTCPS_SIR_IRQ) & INTCPS_SIR_IRQ_MASK;\r
\r
// Needed to prevent infinite nesting when Time Driver lowers TPL\r
MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);\r
-\r
+ ArmDataSyncronizationBarrier ();\r
+ \r
InterruptHandler = gRegisteredInterruptHandlers[Vector];\r
if (InterruptHandler != NULL) {\r
// Call the registered interrupt handler.\r
- InterruptHandler(Vector, SystemContext);\r
+ InterruptHandler (Vector, SystemContext);\r
}\r
\r
// Needed to clear after running the handler\r
MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);\r
+ ArmDataSyncronizationBarrier ();\r
}\r
\r
//\r
RegisterInterruptSource,\r
EnableInterruptSource,\r
DisableInterruptSource,\r
- GetInterruptSourceState\r
+ GetInterruptSourceState,\r
+ EndOfInterrupt\r
};\r
\r
//\r
//\r
// Get the cpu protocol that this driver requires.\r
//\r
- Status = gBS->LocateProtocol(&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Cpu);\r
+ Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Cpu);\r
ASSERT_EFI_ERROR(Status);\r
\r
//\r
// Unregister the default exception handler.\r
//\r
- Status = Cpu->RegisterInterruptHandler(Cpu, EXCEPT_ARM_IRQ, NULL);\r
+ Status = Cpu->RegisterInterruptHandler (Cpu, EXCEPT_ARM_IRQ, NULL);\r
ASSERT_EFI_ERROR(Status);\r
\r
//\r
// Register to receive interrupts\r
//\r
- Status = Cpu->RegisterInterruptHandler(Cpu, EXCEPT_ARM_IRQ, IrqInterruptHandler);\r
+ Status = Cpu->RegisterInterruptHandler (Cpu, EXCEPT_ARM_IRQ, IrqInterruptHandler);\r
ASSERT_EFI_ERROR(Status);\r
}\r
\r
\r
\r
[Packages]\r
+ ArmPkg/ArmPkg.dec\r
Omap35xxPkg/Omap35xxPkg.dec\r
MdePkg/MdePkg.dec\r
EmbeddedPkg/EmbeddedPkg.dec\r
PrintLib\r
UefiDriverEntryPoint\r
IoLib\r
+ ArmLib\r
\r
[Guids]\r
\r
C Interrupt Handler calledin 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
//
-
// 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);
}
/**
-
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 (
/**
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
/**
-
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
}
/**
-
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
/**
-
Interface stucture 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
-
+ 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,
/**
-
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
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