diff options
author | Guo Mang <mang.guo@intel.com> | 2017-08-02 09:54:47 +0800 |
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committer | Guo Mang <mang.guo@intel.com> | 2017-09-05 19:45:08 +0800 |
commit | 6c128c65b5ec0e5b8b5a0ccb165f3afd29e485f8 (patch) | |
tree | 444372d92a0ae8991fe4d15eb3937df43690dfda /ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c | |
parent | b207c6434d7a5a4502975d322312e07017e8a8cb (diff) | |
download | edk2-platforms-6c128c65b5ec0e5b8b5a0ccb165f3afd29e485f8.tar.xz |
Remove core packages since we can get them from edk2 repository
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c')
-rw-r--r-- | ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c b/ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c deleted file mode 100644 index 4b05199db3..0000000000 --- a/ArmPkg/Drivers/CpuDxe/ArmV6/Exception.c +++ /dev/null @@ -1,234 +0,0 @@ -/** @file
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2014, ARM Limited. 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 "CpuDxe.h"
-
-//FIXME: Will not compile on non-ARMv7 builds
-#include <Chipset/ArmV7.h>
-
-VOID
-ExceptionHandlersStart (
- VOID
- );
-
-VOID
-ExceptionHandlersEnd (
- VOID
- );
-
-VOID
-CommonExceptionEntry (
- VOID
- );
-
-VOID
-AsmCommonExceptionEntry (
- VOID
- );
-
-
-EFI_EXCEPTION_CALLBACK gExceptionHandlers[MAX_ARM_EXCEPTION + 1];
-EFI_EXCEPTION_CALLBACK gDebuggerExceptionHandlers[MAX_ARM_EXCEPTION + 1];
-
-
-
-/**
- This function registers and enables the handler specified by InterruptHandler for a processor
- interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
- handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
- The installed handler is called once for each processor interrupt or exception.
-
- @param InterruptType A pointer to the processor's current interrupt state. Set to TRUE if interrupts
- are enabled and FALSE if interrupts are disabled.
- @param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
- when a processor interrupt occurs. If this parameter is NULL, then the handler
- will be uninstalled.
-
- @retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
- @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
- previously installed.
- @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
- previously installed.
- @retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
-
-**/
-EFI_STATUS
-RegisterInterruptHandler (
- IN EFI_EXCEPTION_TYPE InterruptType,
- IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
- )
-{
- if (InterruptType > MAX_ARM_EXCEPTION) {
- return EFI_UNSUPPORTED;
- }
-
- if ((InterruptHandler != NULL) && (gExceptionHandlers[InterruptType] != NULL)) {
- return EFI_ALREADY_STARTED;
- }
-
- gExceptionHandlers[InterruptType] = InterruptHandler;
-
- return EFI_SUCCESS;
-}
-
-
-
-
-VOID
-EFIAPI
-CommonCExceptionHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN OUT EFI_SYSTEM_CONTEXT SystemContext
- )
-{
- if (ExceptionType <= MAX_ARM_EXCEPTION) {
- if (gExceptionHandlers[ExceptionType]) {
- gExceptionHandlers[ExceptionType] (ExceptionType, SystemContext);
- return;
- }
- } else {
- DEBUG ((EFI_D_ERROR, "Unknown exception type %d from %08x\n", ExceptionType, SystemContext.SystemContextArm->PC));
- ASSERT (FALSE);
- }
-
- if (ExceptionType == EXCEPT_ARM_SOFTWARE_INTERRUPT) {
- //
- // ARM JTAG debuggers some times use this vector, so it is not an error to get one
- //
- return;
- }
-
- DefaultExceptionHandler (ExceptionType, SystemContext);
-}
-
-
-
-EFI_STATUS
-InitializeExceptions (
- IN EFI_CPU_ARCH_PROTOCOL *Cpu
- )
-{
- EFI_STATUS Status;
- UINTN Offset;
- UINTN Length;
- UINTN Index;
- BOOLEAN IrqEnabled;
- BOOLEAN FiqEnabled;
- EFI_PHYSICAL_ADDRESS Base;
- UINT32 *VectorBase;
-
- Status = EFI_SUCCESS;
- ZeroMem (gExceptionHandlers,sizeof(*gExceptionHandlers));
-
- //
- // Disable interrupts
- //
- Cpu->GetInterruptState (Cpu, &IrqEnabled);
- Cpu->DisableInterrupt (Cpu);
-
- //
- // EFI does not use the FIQ, but a debugger might so we must disable
- // as we take over the exception vectors.
- //
- FiqEnabled = ArmGetFiqState ();
- ArmDisableFiq ();
-
- if (FeaturePcdGet(PcdRelocateVectorTable) == TRUE) {
- //
- // Copy an implementation of the ARM exception vectors to PcdCpuVectorBaseAddress.
- //
- Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
-
- // Check if the exception vector is in the low address
- if (PcdGet32 (PcdCpuVectorBaseAddress) == 0x0) {
- // Set SCTLR.V to 0 to enable VBAR to be used
- ArmSetLowVectors ();
- } else {
- ArmSetHighVectors ();
- }
-
- //
- // Reserve space for the exception handlers
- //
- Base = (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdCpuVectorBaseAddress);
- VectorBase = (UINT32 *)(UINTN)Base;
- Status = gBS->AllocatePages (AllocateAddress, EfiBootServicesCode, EFI_SIZE_TO_PAGES (Length), &Base);
- // If the request was for memory that's not in the memory map (which is often the case for 0x00000000
- // on embedded systems, for example, we don't want to hang up. So we'll check here for a status of
- // EFI_NOT_FOUND, and continue in that case.
- if (EFI_ERROR(Status) && (Status != EFI_NOT_FOUND)) {
- ASSERT_EFI_ERROR (Status);
- }
-
- if (FeaturePcdGet(PcdDebuggerExceptionSupport) == TRUE) {
- // Save existing vector table, in case debugger is already hooked in
- CopyMem ((VOID *)gDebuggerExceptionHandlers, (VOID *)VectorBase, sizeof (gDebuggerExceptionHandlers));
- }
-
- // Copy our assembly code into the page that contains the exception vectors.
- CopyMem ((VOID *)VectorBase, (VOID *)ExceptionHandlersStart, Length);
-
- //
- // Patch in the common Assembly exception handler
- //
- Offset = (UINTN)CommonExceptionEntry - (UINTN)ExceptionHandlersStart;
- *(UINTN *) ((UINT8 *)(UINTN)PcdGet32 (PcdCpuVectorBaseAddress) + Offset) = (UINTN)AsmCommonExceptionEntry;
-
- //
- // Initialize the C entry points for interrupts
- //
- for (Index = 0; Index <= MAX_ARM_EXCEPTION; Index++) {
- if (!FeaturePcdGet(PcdDebuggerExceptionSupport) ||
- (gDebuggerExceptionHandlers[Index] == 0) || (gDebuggerExceptionHandlers[Index] == (VOID *)(UINTN)0xEAFFFFFE)) {
- // Exception handler contains branch to vector location (jmp $) so no handler
- // NOTE: This code assumes vectors are ARM and not Thumb code
- Status = RegisterInterruptHandler (Index, NULL);
- ASSERT_EFI_ERROR (Status);
- } else {
- // If the debugger has already hooked put its vector back
- VectorBase[Index] = (UINT32)(UINTN)gDebuggerExceptionHandlers[Index];
- }
- }
-
- // Flush Caches since we updated executable stuff
- InvalidateInstructionCacheRange ((VOID *)PcdGet32(PcdCpuVectorBaseAddress), Length);
-
- //Note: On ARM processor with the Security Extension, the Vector Table can be located anywhere in the memory.
- // The Vector Base Address Register defines the location
- ArmWriteVBar (PcdGet32(PcdCpuVectorBaseAddress));
- } else {
- // The Vector table must be 32-byte aligned
- if (((UINT32)ExceptionHandlersStart & ARM_VECTOR_TABLE_ALIGNMENT) != 0) {
- ASSERT (0);
- return EFI_INVALID_PARAMETER;
- }
-
- // We do not copy the Exception Table at PcdGet32(PcdCpuVectorBaseAddress). We just set Vector Base Address to point into CpuDxe code.
- ArmWriteVBar ((UINT32)ExceptionHandlersStart);
- }
-
- if (FiqEnabled) {
- ArmEnableFiq ();
- }
-
- if (IrqEnabled) {
- //
- // Restore interrupt state
- //
- Status = Cpu->EnableInterrupt (Cpu);
- }
-
- return Status;
-}
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