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authorAJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524>2010-01-08 21:07:58 +0000
committerAJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524>2010-01-08 21:07:58 +0000
commitdb5c4f9e1523964ff1dd4139513d84e58d3f1d80 (patch)
treed433111347881037d7586b03f54f6d3209d15dd7 /BeagleBoardPkg
parentcc726b9ffd38771454660d5bd6b4f197707e40d7 (diff)
downloadedk2-platforms-db5c4f9e1523964ff1dd4139513d84e58d3f1d80.tar.xz
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
Diffstat (limited to 'BeagleBoardPkg')
-rw-r--r--BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c1
-rwxr-xr-xBeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm24
-rwxr-xr-xBeagleBoardPkg/Sec/Cache.c2
-rw-r--r--BeagleBoardPkg/TimerDxe/Timer.c157
4 files changed, 158 insertions, 26 deletions
diff --git a/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c b/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
index 97361ffbc1..3e69515dfe 100644
--- a/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
+++ b/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
@@ -93,7 +93,6 @@ RegisterInterruptSource (
}
gRegisteredInterruptHandlers[Source] = Handler;
-
return This->EnableInterruptSource(This, Source);
}
diff --git a/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm
index fb30e4dd59..411e3c13ce 100755
--- a/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm
+++ b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm
@@ -53,33 +53,9 @@ stack_pointer_setup
LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */
add r4, r2, r3
- //Enter IRQ mode and set up IRQ stack pointer
- mov r0,#0x12|0x80|0x40
- msr CPSR_c,r0
- mov r13,r4
-
- //Enter Abort mode and set up Abort stack pointer
- mov r0,#0x17|0x80|0x40
- msr CPSR_c,r0
- sub r4, r4, #0x400
- mov r13,r4
-
- //Enter Undefined mode and set up Undefined stack pointer
- mov r0,#0x1b|0x80|0x40
- msr CPSR_c,r0
- sub r4, r4, #0x400
- mov r13,r4
-
//Enter SVC mode and set up SVC stack pointer
mov r0,#0x13|0x80|0x40
msr CPSR_c,r0
- sub r4, r4, #0x400
- mov r13,r4
-
- //Enter System mode and set up System stack pointer
- mov r0,#0x1f|0x80|0x40
- msr CPSR_c,r0
- sub r4, r4, #0x400
mov r13,r4
// Call C entry point
diff --git a/BeagleBoardPkg/Sec/Cache.c b/BeagleBoardPkg/Sec/Cache.c
index 12bf990812..facc5deae4 100755
--- a/BeagleBoardPkg/Sec/Cache.c
+++ b/BeagleBoardPkg/Sec/Cache.c
@@ -82,7 +82,7 @@ InitCache (
MemoryTable[4].Length = 0;
MemoryTable[4].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
- ArmConfigureMmu(MemoryTable, &TranslationTableBase, &TranslationTableSize);
+ ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);
BuildMemoryAllocationHob((EFI_PHYSICAL_ADDRESS)(UINTN)TranslationTableBase, TranslationTableSize, EfiBootServicesData);
}
diff --git a/BeagleBoardPkg/TimerDxe/Timer.c b/BeagleBoardPkg/TimerDxe/Timer.c
index 32ba09c1eb..f43b24bd37 100644
--- a/BeagleBoardPkg/TimerDxe/Timer.c
+++ b/BeagleBoardPkg/TimerDxe/Timer.c
@@ -53,6 +53,17 @@ volatile UINT32 TIER;
// Cached interrupt vector
volatile UINTN gVector;
+
+/**
+ 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
TimerInterruptHandler (
@@ -60,6 +71,15 @@ TimerInterruptHandler (
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 (mTimerPeriodicCallback) {
mTimerPeriodicCallback(SystemContext);
}
@@ -73,8 +93,39 @@ TimerInterruptHandler (
// Poll interrupt status bits to ensure clearing
while ((MmioRead32(TISR) & TISR_ALL_INTERRUPT_MASK) != TISR_NO_INTERRUPTS_PENDING);
+
+ 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 (
@@ -95,6 +146,32 @@ TimerDriverRegisterHandler (
return EFI_SUCCESS;
}
+/**
+ 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 (
@@ -136,6 +213,21 @@ TimerDriverSetTimerPeriod (
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 (
@@ -151,6 +243,21 @@ TimerDriverGetTimerPeriod (
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 (
@@ -160,6 +267,7 @@ TimerDriverGenerateSoftInterrupt (
return EFI_UNSUPPORTED;
}
+
EFI_STATUS
EFIAPI
TimerDriverRegisterPeriodicCallback (
@@ -180,6 +288,41 @@ TimerDriverRegisterPeriodicCallback (
return EFI_SUCCESS;
}
+
+/**
+ 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
+ a period of time.
+
+**/
EFI_TIMER_ARCH_PROTOCOL gTimer = {
TimerDriverRegisterHandler,
TimerDriverSetTimerPeriod,
@@ -191,6 +334,20 @@ TIMER_DEBUG_SUPPORT_PROTOCOL gTimerDebugSupport = {
TimerDriverRegisterPeriodicCallback
};
+
+/**
+ 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 (