UefiCpuPkg: Add CPU exception library for LoongArch

Added LoongArch exception handler into CpuExceptionHandlerLib. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4734 Cc: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Chao Li <lichao@loongson.cn> Co-authored-by: Baoqi Zhang <zhangbaoqi@loongson.cn> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
2024-03-08 16:24:12 +08:00
parent 439030bc37
commit 7750468c37
8 changed files with 1273 additions and 9 deletions
--- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/ExceptionCommon.h
+++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/ExceptionCommon.h
@@ -0,0 +1,131 @@
+/** @file DxeExceptionLib.h
+
+  Common header file for CPU Exception Handler Library.
+
+  Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef EXCEPTION_COMMON_H_
+#define EXCEPTION_COMMON_H_
+
+#define MAX_DEBUG_MESSAGE_LENGTH  0x100
+
+//
+// For coding convenience, define the maximum valid
+// LoongArch exception.
+// Since UEFI V2.11, it will be present in DebugSupport.h.
+//
+#define MAX_LOONGARCH_EXCEPTION  64
+
+extern INTN  mExceptionKnownNameNum;
+
+/**
+  Get ASCII format string exception name by exception type.
+
+  @param[in] ExceptionType  Exception type.
+
+  @return    ASCII format string exception name.
+
+**/
+CONST CHAR8 *
+GetExceptionNameStr (
+  IN EFI_EXCEPTION_TYPE  ExceptionType
+  );
+
+/**
+  Prints a message to the serial port.
+
+  @param[in]  Format      Format string for the message to print.
+  @param[in]  ...         Variable argument list whose contents are accessed
+                      based on the format string specified by Format.
+
+**/
+VOID
+EFIAPI
+InternalPrintMessage (
+  IN  CONST CHAR8  *Format,
+  ...
+  );
+
+/**
+  Find and display image base address and return image base and its entry point.
+
+  @param[in] CurrentEip      Current instruction pointer.
+
+**/
+VOID
+DumpModuleImageInfo (
+  IN UINTN  CurrentEip
+  );
+
+/**
+  IPI Interrupt Handler.
+
+  @param InterruptType    The type of interrupt that occurred
+  @param SystemContext    A pointer to the system context when the interrupt occurred
+**/
+VOID
+EFIAPI
+IpiInterruptHandler (
+  IN EFI_EXCEPTION_TYPE  InterruptType,
+  IN EFI_SYSTEM_CONTEXT  SystemContext
+  );
+
+/**
+  Default exception handler.
+
+  @param[in] ExceptionType  Exception type.
+  @param[in] SystemContext  Pointer to EFI_SYSTEM_CONTEXT.
+
+**/
+VOID
+EFIAPI
+DefaultExceptionHandler (
+  IN     EFI_EXCEPTION_TYPE  ExceptionType,
+  IN OUT EFI_SYSTEM_CONTEXT  SystemContext
+  );
+
+/**
+  Display CPU information.
+
+  @param[in] ExceptionType  Exception type.
+  @param[in] SystemContext  Pointer to EFI_SYSTEM_CONTEXT.
+
+**/
+VOID
+DumpImageAndCpuContent (
+  IN EFI_EXCEPTION_TYPE  ExceptionType,
+  IN EFI_SYSTEM_CONTEXT  SystemContext
+  );
+
+/**
+  Get exception types
+
+  @param[in]  SystemContext  Pointer to EFI_SYSTEM_CONTEXT.
+
+  @return     Exception type.
+
+**/
+EFI_EXCEPTION_TYPE
+EFIAPI
+GetExceptionType (
+  IN EFI_SYSTEM_CONTEXT  SystemContext
+  );
+
+/**
+  Get Common interrupt types
+
+  @param[in] SystemContext  Pointer to EFI_SYSTEM_CONTEXT.
+
+  @return    Interrupt type.
+
+**/
+EFI_EXCEPTION_TYPE
+EFIAPI
+GetInterruptType (
+  IN EFI_SYSTEM_CONTEXT  SystemContext
+  );
+
+#endif