/** @file\r
- CPU Exception Library provides SEC/PEIM CPU exception handler.\r
+ CPU exception handler library implemenation for SEC/PEIM modules.\r
\r
-Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials are licensed and made available under\r
-the terms and conditions of the BSD License that accompanies this distribution.\r
-The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php.\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiPei.h>\r
#include "CpuExceptionCommon.h"\r
\r
-//\r
-// Image Aglinment size for SEC/PEI phase\r
-//\r
-CONST UINTN mImageAlignSize = 4;\r
+CONST UINTN mDoFarReturnFlag = 0;\r
\r
/**\r
Common exception handler.\r
VOID\r
EFIAPI\r
CommonExceptionHandler (\r
- IN EFI_EXCEPTION_TYPE ExceptionType, \r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
IN EFI_SYSTEM_CONTEXT SystemContext\r
)\r
{\r
+ //\r
+ // Initialize the serial port before dumping.\r
+ //\r
+ SerialPortInitialize ();\r
//\r
// Display ExceptionType, CPU information and Image information\r
- // \r
- DumpCpuContent (ExceptionType, SystemContext);\r
- \r
+ //\r
+ DumpImageAndCpuContent (ExceptionType, SystemContext);\r
+\r
//\r
// Enter a dead loop.\r
//\r
}\r
\r
/**\r
- Setup CPU exception handlers.\r
+ Initializes all CPU exceptions entries and provides the default exception handlers.\r
+\r
+ Caller should try to get an array of interrupt and/or exception vectors that are in use and need to\r
+ persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.\r
+ If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.\r
+ If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.\r
+ Note: Before invoking this API, caller must allocate memory for IDT table and load\r
+ IDTR by AsmWriteIdtr().\r
+\r
+ @param[in] VectorInfo Pointer to reserved vector list.\r
+\r
+ @retval EFI_SUCCESS CPU Exception Entries have been successfully initialized\r
+ with default exception handlers.\r
+ @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.\r
+ @retval EFI_UNSUPPORTED This function is not supported.\r
\r
- This API will setups the CPU exception handler to display CPU contents and run into\r
- CpuDeadLoop(). \r
- @Note: Before invoking this API, caller must allocate memory for IDT table and load \r
- IDTR by AsmWriteIdtr().\r
- \r
**/\r
-VOID\r
+EFI_STATUS\r
+EFIAPI\r
+InitializeCpuExceptionHandlers (\r
+ IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ RESERVED_VECTORS_DATA ReservedVectorData[CPU_EXCEPTION_NUM];\r
+ IA32_DESCRIPTOR IdtDescriptor;\r
+ UINTN IdtEntryCount;\r
+ UINT16 CodeSegment;\r
+ EXCEPTION_HANDLER_TEMPLATE_MAP TemplateMap;\r
+ IA32_IDT_GATE_DESCRIPTOR *IdtTable;\r
+ UINTN Index;\r
+ UINTN InterruptHandler;\r
+\r
+ if (VectorInfo != NULL) {\r
+ SetMem ((VOID *) ReservedVectorData, sizeof (RESERVED_VECTORS_DATA) * CPU_EXCEPTION_NUM, 0xff);\r
+ Status = ReadAndVerifyVectorInfo (VectorInfo, ReservedVectorData, CPU_EXCEPTION_NUM);\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ }\r
+ //\r
+ // Read IDT descriptor and calculate IDT size\r
+ //\r
+ AsmReadIdtr (&IdtDescriptor);\r
+ IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);\r
+ if (IdtEntryCount > CPU_EXCEPTION_NUM) {\r
+ //\r
+ // CPU exception library only setup CPU_EXCEPTION_NUM exception handler at most\r
+ //\r
+ IdtEntryCount = CPU_EXCEPTION_NUM;\r
+ }\r
+ //\r
+ // Use current CS as the segment selector of interrupt gate in IDT\r
+ //\r
+ CodeSegment = AsmReadCs ();\r
+\r
+ AsmGetTemplateAddressMap (&TemplateMap);\r
+ IdtTable = (IA32_IDT_GATE_DESCRIPTOR *)IdtDescriptor.Base;\r
+ for (Index = 0; Index < IdtEntryCount; Index ++) {\r
+ IdtTable[Index].Bits.Selector = CodeSegment;\r
+ //\r
+ // Check reserved vectors attributes if has, only EFI_VECTOR_HANDOFF_DO_NOT_HOOK\r
+ // supported in this instance\r
+ //\r
+ if (VectorInfo != NULL) {\r
+ if (ReservedVectorData[Index].Attribute == EFI_VECTOR_HANDOFF_DO_NOT_HOOK) {\r
+ continue;\r
+ }\r
+ }\r
+ //\r
+ // Update IDT entry\r
+ //\r
+ InterruptHandler = TemplateMap.ExceptionStart + Index * TemplateMap.ExceptionStubHeaderSize;\r
+ ArchUpdateIdtEntry (&IdtTable[Index], InterruptHandler);\r
+ }\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.\r
+\r
+ Caller should try to get an array of interrupt and/or exception vectors that are in use and need to\r
+ persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.\r
+ If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.\r
+ If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.\r
+\r
+ @param[in] VectorInfo Pointer to reserved vector list.\r
+\r
+ @retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized\r
+ with default interrupt/exception handlers.\r
+ @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.\r
+ @retval EFI_UNSUPPORTED This function is not supported.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+InitializeCpuInterruptHandlers (\r
+ IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL\r
+ )\r
+{\r
+ return EFI_UNSUPPORTED;\r
+}\r
+\r
+/**\r
+ Registers a function to be called from the processor interrupt handler.\r
+\r
+ This function registers and enables the handler specified by InterruptHandler for a processor\r
+ interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the\r
+ handler for the processor interrupt or exception type specified by InterruptType is uninstalled.\r
+ The installed handler is called once for each processor interrupt or exception.\r
+ NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or\r
+ InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.\r
+\r
+ @param[in] InterruptType Defines which interrupt or exception to hook.\r
+ @param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called\r
+ when a processor interrupt occurs. If this parameter is NULL, then the handler\r
+ will be uninstalled.\r
+\r
+ @retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.\r
+ @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was\r
+ previously installed.\r
+ @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not\r
+ previously installed.\r
+ @retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,\r
+ or this function is not supported.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterCpuInterruptHandler (\r
+ IN EFI_EXCEPTION_TYPE InterruptType,\r
+ IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r
+ )\r
+{\r
+ return EFI_UNSUPPORTED;\r
+}\r
+\r
+/**\r
+ Initializes all CPU exceptions entries with optional extra initializations.\r
+\r
+ By default, this method should include all functionalities implemented by\r
+ InitializeCpuExceptionHandlers(), plus extra initialization works, if any.\r
+ This could be done by calling InitializeCpuExceptionHandlers() directly\r
+ in this method besides the extra works.\r
+\r
+ InitData is optional and its use and content are processor arch dependent.\r
+ The typical usage of it is to convey resources which have to be reserved\r
+ elsewhere and are necessary for the extra initializations of exception.\r
+\r
+ @param[in] VectorInfo Pointer to reserved vector list.\r
+ @param[in] InitData Pointer to data optional for extra initializations\r
+ of exception.\r
+\r
+ @retval EFI_SUCCESS The exceptions have been successfully\r
+ initialized.\r
+ @retval EFI_INVALID_PARAMETER VectorInfo or InitData contains invalid\r
+ content.\r
+\r
+**/\r
+EFI_STATUS\r
EFIAPI\r
-SetupCpuExceptionHandlers (\r
- IN VOID\r
+InitializeCpuExceptionHandlersEx (\r
+ IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL,\r
+ IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL\r
)\r
{\r
- InternalSetupCpuExceptionHandlers ();\r
+ return InitializeCpuExceptionHandlers (VectorInfo);\r
}\r
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