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0fdffb71df
There is a problem with LoongArch64 exception handler, it returns a unhandled value when we get an exception type, the correct value should be right shifted 16 bits, so fix it. Cc: Ray Ni <ray.ni@intel.com> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Cc: Zhiguang Liu <zhiguang.liu@intel.com> Cc: Dun Tan <dun.tan@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Signed-off-by: Chao Li <lichao@loongson.cn>
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/** @file SecPeiExceptionLib.c
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LoongArch exception library implemenation for PEI and SEC modules.
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Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/BaseLib.h>
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#include <Library/CpuLib.h>
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#include <Library/CpuExceptionHandlerLib.h>
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#include <Library/DebugLib.h>
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#include <Library/SerialPortLib.h>
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#include <Protocol/DebugSupport.h>
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#include <Register/LoongArch64/Csr.h>
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#include "ExceptionCommon.h"
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/**
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Registers a function to be called from the processor interrupt or exception handler.
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Always return EFI_UNSUPPORTED in the SEC exception initialization module.
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@param InterruptType A pointer to the processor's current interrupt state. Set to TRUE if interrupts
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are enabled and FALSE if interrupts are disabled.
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@param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
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when a processor interrupt occurs. If this parameter is NULL, then the handler
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will be uninstalled.
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@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
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**/
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EFI_STATUS
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RegisterCpuInterruptHandler (
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IN EFI_EXCEPTION_TYPE InterruptType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Common exception handler.
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@param ExceptionType Exception type.
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@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
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**/
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VOID
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EFIAPI
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CommonExceptionHandler (
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN OUT EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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EFI_EXCEPTION_TYPE InterruptType;
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if (ExceptionType == EXCEPT_LOONGARCH_INT) {
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//
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// Interrupt
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//
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InterruptType = GetInterruptType (SystemContext);
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if (InterruptType == EXCEPT_LOONGARCH_INT_IPI) {
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//
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// APs may wake up via IPI IRQ during the SEC or PEI phase, clear the IPI interrupt and
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// perform the remaining work.
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//
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IpiInterruptHandler (InterruptType, SystemContext);
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return;
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}
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}
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DefaultExceptionHandler (ExceptionType, SystemContext);
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}
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/**
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Initializes all CPU exceptions entries and provides the default exception handlers.
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Always return EFI_SUCCESS in the SEC exception initialization module.
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@param[in] VectorInfo Pointer to reserved vector list.
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@retval EFI_SUCCESS CPU Exception Entries have been successfully initialized
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with default exception handlers.
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**/
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EFI_STATUS
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EFIAPI
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InitializeCpuExceptionHandlers (
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IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
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)
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{
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return EFI_SUCCESS;
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}
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