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e41aad15 | 1 | /** @file\r |
418aded9 | 2 | CPU exception handler library implementation for SMM modules.\r |
e41aad15 | 3 | \r |
2a09527e | 4 | Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>\r |
0acd8697 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
e41aad15 JF |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <PiSmm.h>\r | |
10 | #include "CpuExceptionCommon.h"\r | |
11 | \r | |
053e878b | 12 | CONST UINTN mDoFarReturnFlag = 1;\r |
e41aad15 | 13 | \r |
053e878b MK |
14 | RESERVED_VECTORS_DATA mReservedVectorsData[CPU_EXCEPTION_NUM];\r |
15 | EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_EXCEPTION_NUM];\r | |
34d50512 | 16 | EXCEPTION_HANDLER_DATA mExceptionHandlerData = {\r |
2a09527e RN |
17 | CPU_EXCEPTION_NUM,\r |
18 | 0, // To be fixed\r | |
34d50512 RN |
19 | mReservedVectorsData,\r |
20 | mExternalInterruptHandlerTable\r | |
21 | };\r | |
d91225cf | 22 | \r |
44ecbc28 JF |
23 | /**\r |
24 | Common exception handler.\r | |
25 | \r | |
26 | @param ExceptionType Exception type.\r | |
27 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
28 | **/\r | |
29 | VOID\r | |
30 | EFIAPI\r | |
31 | CommonExceptionHandler (\r | |
053e878b MK |
32 | IN EFI_EXCEPTION_TYPE ExceptionType,\r |
33 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
44ecbc28 JF |
34 | )\r |
35 | {\r | |
36 | CommonExceptionHandlerWorker (ExceptionType, SystemContext, &mExceptionHandlerData);\r | |
37 | }\r | |
38 | \r | |
e41aad15 JF |
39 | /**\r |
40 | Initializes all CPU exceptions entries and provides the default exception handlers.\r | |
dd563742 | 41 | \r |
e41aad15 JF |
42 | Caller should try to get an array of interrupt and/or exception vectors that are in use and need to\r |
43 | persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.\r | |
dd563742 | 44 | If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.\r |
e41aad15 JF |
45 | If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.\r |
46 | \r | |
47 | @param[in] VectorInfo Pointer to reserved vector list.\r | |
dd563742 JF |
48 | \r |
49 | @retval EFI_SUCCESS CPU Exception Entries have been successfully initialized\r | |
e41aad15 JF |
50 | with default exception handlers.\r |
51 | @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.\r | |
52 | @retval EFI_UNSUPPORTED This function is not supported.\r | |
53 | \r | |
54 | **/\r | |
55 | EFI_STATUS\r | |
56 | EFIAPI\r | |
57 | InitializeCpuExceptionHandlers (\r | |
053e878b | 58 | IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL\r |
e41aad15 JF |
59 | )\r |
60 | {\r | |
ab95e54d JF |
61 | InitializeSpinLock (&mExceptionHandlerData.DisplayMessageSpinLock);\r |
62 | return InitializeCpuExceptionHandlersWorker (VectorInfo, &mExceptionHandlerData);\r | |
e41aad15 JF |
63 | }\r |
64 | \r | |
e41aad15 JF |
65 | /**\r |
66 | Registers a function to be called from the processor interrupt handler.\r | |
67 | \r | |
dd563742 JF |
68 | This function registers and enables the handler specified by InterruptHandler for a processor\r |
69 | interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the\r | |
70 | handler for the processor interrupt or exception type specified by InterruptType is uninstalled.\r | |
e41aad15 | 71 | The installed handler is called once for each processor interrupt or exception.\r |
2a09527e RN |
72 | NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,\r |
73 | otherwise EFI_UNSUPPORTED returned.\r | |
e41aad15 JF |
74 | \r |
75 | @param[in] InterruptType Defines which interrupt or exception to hook.\r | |
76 | @param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called\r | |
77 | when a processor interrupt occurs. If this parameter is NULL, then the handler\r | |
78 | will be uninstalled.\r | |
79 | \r | |
80 | @retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.\r | |
81 | @retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was\r | |
82 | previously installed.\r | |
83 | @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not\r | |
84 | previously installed.\r | |
85 | @retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,\r | |
86 | or this function is not supported.\r | |
3f25e6ea | 87 | **/\r |
e41aad15 JF |
88 | EFI_STATUS\r |
89 | EFIAPI\r | |
90 | RegisterCpuInterruptHandler (\r | |
053e878b MK |
91 | IN EFI_EXCEPTION_TYPE InterruptType,\r |
92 | IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r | |
e41aad15 JF |
93 | )\r |
94 | {\r | |
670f13af | 95 | return RegisterCpuInterruptHandlerWorker (InterruptType, InterruptHandler, &mExceptionHandlerData);\r |
0ff5aa9c JW |
96 | }\r |
97 | \r | |
98 | /**\r | |
e7abb94d | 99 | Setup separate stacks for certain exception handlers.\r |
0f7bccf5 | 100 | If the input Buffer and BufferSize are both NULL, use global variable if possible.\r |
0ff5aa9c | 101 | \r |
0f7bccf5 ZL |
102 | @param[in] Buffer Point to buffer used to separate exception stack.\r |
103 | @param[in, out] BufferSize On input, it indicates the byte size of Buffer.\r | |
104 | If the size is not enough, the return status will\r | |
105 | be EFI_BUFFER_TOO_SMALL, and output BufferSize\r | |
106 | will be the size it needs.\r | |
0ff5aa9c | 107 | \r |
e7abb94d RN |
108 | @retval EFI_SUCCESS The stacks are assigned successfully.\r |
109 | @retval EFI_UNSUPPORTED This function is not supported.\r | |
0f7bccf5 | 110 | @retval EFI_BUFFER_TOO_SMALL This BufferSize is too small.\r |
0ff5aa9c JW |
111 | **/\r |
112 | EFI_STATUS\r | |
113 | EFIAPI\r | |
e7abb94d | 114 | InitializeSeparateExceptionStacks (\r |
0f7bccf5 ZL |
115 | IN VOID *Buffer,\r |
116 | IN OUT UINTN *BufferSize\r | |
0ff5aa9c JW |
117 | )\r |
118 | {\r | |
e7abb94d | 119 | return EFI_UNSUPPORTED;\r |
0ff5aa9c | 120 | }\r |