1 /** @file
2 Default exception handler
3
4 Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
5 Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
6
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
11
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14
15 **/
16
17 #include <Uefi.h>
18 #include <Library/UefiLib.h>
19 #include <Library/BaseLib.h>
20 #include <Library/DebugLib.h>
21 #include <Library/PeCoffGetEntryPointLib.h>
22 #include <Library/PrintLib.h>
23 #include <Library/ArmDisassemblerLib.h>
24 #include <Library/SerialPortLib.h>
25
26 #include <Guid/DebugImageInfoTable.h>
27 #include <Protocol/DebugSupport.h>
28 #include <Protocol/LoadedImage.h>
29
30 EFI_DEBUG_IMAGE_INFO_TABLE_HEADER *gDebugImageTableHeader = NULL;
31
32 STATIC CHAR8 *gExceptionTypeString[] = {
33 "Synchronous",
34 "IRQ",
35 "FIQ",
36 "SError"
37 };
38
39 CHAR8 *
40 GetImageName (
41 IN UINTN FaultAddress,
42 OUT UINTN *ImageBase,
43 OUT UINTN *PeCoffSizeOfHeaders
44 );
45
46 STATIC
47 VOID
DescribeInstructionOrDataAbort(IN CHAR8 * AbortType,IN UINTN Iss)48 DescribeInstructionOrDataAbort (
49 IN CHAR8 *AbortType,
50 IN UINTN Iss
51 )
52 {
53 CHAR8 *AbortCause;
54
55 switch (Iss & 0x3f) {
56 case 0x0: AbortCause = "Address size fault, zeroth level of translation or translation table base register"; break;
57 case 0x1: AbortCause = "Address size fault, first level"; break;
58 case 0x2: AbortCause = "Address size fault, second level"; break;
59 case 0x3: AbortCause = "Address size fault, third level"; break;
60 case 0x4: AbortCause = "Translation fault, zeroth level"; break;
61 case 0x5: AbortCause = "Translation fault, first level"; break;
62 case 0x6: AbortCause = "Translation fault, second level"; break;
63 case 0x7: AbortCause = "Translation fault, third level"; break;
64 case 0x9: AbortCause = "Access flag fault, first level"; break;
65 case 0xa: AbortCause = "Access flag fault, second level"; break;
66 case 0xb: AbortCause = "Access flag fault, third level"; break;
67 case 0xd: AbortCause = "Permission fault, first level"; break;
68 case 0xe: AbortCause = "Permission fault, second level"; break;
69 case 0xf: AbortCause = "Permission fault, third level"; break;
70 case 0x10: AbortCause = "Synchronous external abort"; break;
71 case 0x18: AbortCause = "Synchronous parity error on memory access"; break;
72 case 0x11: AbortCause = "Asynchronous external abort"; break;
73 case 0x19: AbortCause = "Asynchronous parity error on memory access"; break;
74 case 0x14: AbortCause = "Synchronous external abort on translation table walk, zeroth level"; break;
75 case 0x15: AbortCause = "Synchronous external abort on translation table walk, first level"; break;
76 case 0x16: AbortCause = "Synchronous external abort on translation table walk, second level"; break;
77 case 0x17: AbortCause = "Synchronous external abort on translation table walk, third level"; break;
78 case 0x1c: AbortCause = "Synchronous parity error on memory access on translation table walk, zeroth level"; break;
79 case 0x1d: AbortCause = "Synchronous parity error on memory access on translation table walk, first level"; break;
80 case 0x1e: AbortCause = "Synchronous parity error on memory access on translation table walk, second level"; break;
81 case 0x1f: AbortCause = "Synchronous parity error on memory access on translation table walk, third level"; break;
82 case 0x21: AbortCause = "Alignment fault"; break;
83 case 0x22: AbortCause = "Debug event"; break;
84 case 0x30: AbortCause = "TLB conflict abort"; break;
85 case 0x33:
86 case 0x34: AbortCause = "IMPLEMENTATION DEFINED"; break;
87 case 0x35:
88 case 0x36: AbortCause = "Domain fault"; break;
89 default: AbortCause = ""; break;
90 }
91
92 DEBUG ((EFI_D_ERROR, "\n%a: %a\n", AbortType, AbortCause));
93 }
94
95 STATIC
96 VOID
DescribeExceptionSyndrome(IN UINT32 Esr)97 DescribeExceptionSyndrome (
98 IN UINT32 Esr
99 )
100 {
101 CHAR8 *Message;
102 UINTN Ec;
103 UINTN Iss;
104
105 Ec = Esr >> 26;
106 Iss = Esr & 0x00ffffff;
107
108 switch (Ec) {
109 case 0x15: Message = "SVC executed in AArch64"; break;
110 case 0x20:
111 case 0x21: DescribeInstructionOrDataAbort ("Instruction abort", Iss); return;
112 case 0x22: Message = "PC alignment fault"; break;
113 case 0x23: Message = "SP alignment fault"; break;
114 case 0x24:
115 case 0x25: DescribeInstructionOrDataAbort ("Data abort", Iss); return;
116 default: return;
117 }
118
119 DEBUG ((EFI_D_ERROR, "\n %a \n", Message));
120 }
121
122 /**
123 This is the default action to take on an unexpected exception
124
125 Since this is exception context don't do anything crazy like try to allcoate memory.
126
127 @param ExceptionType Type of the exception
128 @param SystemContext Register state at the time of the Exception
129
130 **/
131 VOID
DefaultExceptionHandler(IN EFI_EXCEPTION_TYPE ExceptionType,IN OUT EFI_SYSTEM_CONTEXT SystemContext)132 DefaultExceptionHandler (
133 IN EFI_EXCEPTION_TYPE ExceptionType,
134 IN OUT EFI_SYSTEM_CONTEXT SystemContext
135 )
136 {
137 CHAR8 Buffer[100];
138 UINTN CharCount;
139
140 CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"\n\n%a Exception at 0x%016lx\n", gExceptionTypeString[ExceptionType], SystemContext.SystemContextAArch64->ELR);
141 SerialPortWrite ((UINT8 *) Buffer, CharCount);
142
143 DEBUG_CODE_BEGIN ();
144 CHAR8 *Pdb;
145 UINTN ImageBase;
146 UINTN PeCoffSizeOfHeader;
147 Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase, &PeCoffSizeOfHeader);
148 if (Pdb != NULL) {
149 DEBUG ((EFI_D_ERROR, "%a loaded at 0x%016lx \n", Pdb, ImageBase));
150 }
151 DEBUG_CODE_END ();
152
153 DEBUG ((EFI_D_ERROR, "\n X0 0x%016lx X1 0x%016lx X2 0x%016lx X3 0x%016lx\n", SystemContext.SystemContextAArch64->X0, SystemContext.SystemContextAArch64->X1, SystemContext.SystemContextAArch64->X2, SystemContext.SystemContextAArch64->X3));
154 DEBUG ((EFI_D_ERROR, " X4 0x%016lx X5 0x%016lx X6 0x%016lx X7 0x%016lx\n", SystemContext.SystemContextAArch64->X4, SystemContext.SystemContextAArch64->X5, SystemContext.SystemContextAArch64->X6, SystemContext.SystemContextAArch64->X7));
155 DEBUG ((EFI_D_ERROR, " X8 0x%016lx X9 0x%016lx X10 0x%016lx X11 0x%016lx\n", SystemContext.SystemContextAArch64->X8, SystemContext.SystemContextAArch64->X9, SystemContext.SystemContextAArch64->X10, SystemContext.SystemContextAArch64->X11));
156 DEBUG ((EFI_D_ERROR, " X12 0x%016lx X13 0x%016lx X14 0x%016lx X15 0x%016lx\n", SystemContext.SystemContextAArch64->X12, SystemContext.SystemContextAArch64->X13, SystemContext.SystemContextAArch64->X14, SystemContext.SystemContextAArch64->X15));
157 DEBUG ((EFI_D_ERROR, " X16 0x%016lx X17 0x%016lx X18 0x%016lx X19 0x%016lx\n", SystemContext.SystemContextAArch64->X16, SystemContext.SystemContextAArch64->X17, SystemContext.SystemContextAArch64->X18, SystemContext.SystemContextAArch64->X19));
158 DEBUG ((EFI_D_ERROR, " X20 0x%016lx X21 0x%016lx X22 0x%016lx X23 0x%016lx\n", SystemContext.SystemContextAArch64->X20, SystemContext.SystemContextAArch64->X21, SystemContext.SystemContextAArch64->X22, SystemContext.SystemContextAArch64->X23));
159 DEBUG ((EFI_D_ERROR, " X24 0x%016lx X25 0x%016lx X26 0x%016lx X27 0x%016lx\n", SystemContext.SystemContextAArch64->X24, SystemContext.SystemContextAArch64->X25, SystemContext.SystemContextAArch64->X26, SystemContext.SystemContextAArch64->X27));
160 DEBUG ((EFI_D_ERROR, " X28 0x%016lx FP 0x%016lx LR 0x%016lx \n", SystemContext.SystemContextAArch64->X28, SystemContext.SystemContextAArch64->FP, SystemContext.SystemContextAArch64->LR));
161
162 /* We save these as 128bit numbers, but have to print them as two 64bit numbers,
163 so swap the 64bit words to correctly represent a 128bit number. */
164 DEBUG ((EFI_D_ERROR, "\n V0 0x%016lx %016lx V1 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V0[1], SystemContext.SystemContextAArch64->V0[0], SystemContext.SystemContextAArch64->V1[1], SystemContext.SystemContextAArch64->V1[0]));
165 DEBUG ((EFI_D_ERROR, " V2 0x%016lx %016lx V3 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V2[1], SystemContext.SystemContextAArch64->V2[0], SystemContext.SystemContextAArch64->V3[1], SystemContext.SystemContextAArch64->V3[0]));
166 DEBUG ((EFI_D_ERROR, " V4 0x%016lx %016lx V5 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V4[1], SystemContext.SystemContextAArch64->V4[0], SystemContext.SystemContextAArch64->V5[1], SystemContext.SystemContextAArch64->V5[0]));
167 DEBUG ((EFI_D_ERROR, " V6 0x%016lx %016lx V7 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V6[1], SystemContext.SystemContextAArch64->V6[0], SystemContext.SystemContextAArch64->V7[1], SystemContext.SystemContextAArch64->V7[0]));
168 DEBUG ((EFI_D_ERROR, " V8 0x%016lx %016lx V9 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V8[1], SystemContext.SystemContextAArch64->V8[0], SystemContext.SystemContextAArch64->V9[1], SystemContext.SystemContextAArch64->V9[0]));
169 DEBUG ((EFI_D_ERROR, " V10 0x%016lx %016lx V11 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V10[1], SystemContext.SystemContextAArch64->V10[0], SystemContext.SystemContextAArch64->V11[1], SystemContext.SystemContextAArch64->V11[0]));
170 DEBUG ((EFI_D_ERROR, " V12 0x%016lx %016lx V13 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V12[1], SystemContext.SystemContextAArch64->V12[0], SystemContext.SystemContextAArch64->V13[1], SystemContext.SystemContextAArch64->V13[0]));
171 DEBUG ((EFI_D_ERROR, " V14 0x%016lx %016lx V15 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V14[1], SystemContext.SystemContextAArch64->V14[0], SystemContext.SystemContextAArch64->V15[1], SystemContext.SystemContextAArch64->V15[0]));
172 DEBUG ((EFI_D_ERROR, " V16 0x%016lx %016lx V17 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V16[1], SystemContext.SystemContextAArch64->V16[0], SystemContext.SystemContextAArch64->V17[1], SystemContext.SystemContextAArch64->V17[0]));
173 DEBUG ((EFI_D_ERROR, " V18 0x%016lx %016lx V19 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V18[1], SystemContext.SystemContextAArch64->V18[0], SystemContext.SystemContextAArch64->V19[1], SystemContext.SystemContextAArch64->V19[0]));
174 DEBUG ((EFI_D_ERROR, " V20 0x%016lx %016lx V21 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V20[1], SystemContext.SystemContextAArch64->V20[0], SystemContext.SystemContextAArch64->V21[1], SystemContext.SystemContextAArch64->V21[0]));
175 DEBUG ((EFI_D_ERROR, " V22 0x%016lx %016lx V23 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V22[1], SystemContext.SystemContextAArch64->V22[0], SystemContext.SystemContextAArch64->V23[1], SystemContext.SystemContextAArch64->V23[0]));
176 DEBUG ((EFI_D_ERROR, " V24 0x%016lx %016lx V25 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V24[1], SystemContext.SystemContextAArch64->V24[0], SystemContext.SystemContextAArch64->V25[1], SystemContext.SystemContextAArch64->V25[0]));
177 DEBUG ((EFI_D_ERROR, " V26 0x%016lx %016lx V27 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V26[1], SystemContext.SystemContextAArch64->V26[0], SystemContext.SystemContextAArch64->V27[1], SystemContext.SystemContextAArch64->V27[0]));
178 DEBUG ((EFI_D_ERROR, " V28 0x%016lx %016lx V29 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V28[1], SystemContext.SystemContextAArch64->V28[0], SystemContext.SystemContextAArch64->V29[1], SystemContext.SystemContextAArch64->V29[0]));
179 DEBUG ((EFI_D_ERROR, " V30 0x%016lx %016lx V31 0x%016lx %016lx\n", SystemContext.SystemContextAArch64->V30[1], SystemContext.SystemContextAArch64->V30[0], SystemContext.SystemContextAArch64->V31[1], SystemContext.SystemContextAArch64->V31[0]));
180
181 DEBUG ((EFI_D_ERROR, "\n SP 0x%016lx ELR 0x%016lx SPSR 0x%08lx FPSR 0x%08lx\n ESR 0x%08lx FAR 0x%016lx\n", SystemContext.SystemContextAArch64->SP, SystemContext.SystemContextAArch64->ELR, SystemContext.SystemContextAArch64->SPSR, SystemContext.SystemContextAArch64->FPSR, SystemContext.SystemContextAArch64->ESR, SystemContext.SystemContextAArch64->FAR));
182
183 DEBUG ((EFI_D_ERROR, "\n ESR : EC 0x%02x IL 0x%x ISS 0x%08x\n", (SystemContext.SystemContextAArch64->ESR & 0xFC000000) >> 26, (SystemContext.SystemContextAArch64->ESR >> 25) & 0x1, SystemContext.SystemContextAArch64->ESR & 0x1FFFFFF ));
184
185 DescribeExceptionSyndrome (SystemContext.SystemContextAArch64->ESR);
186 ASSERT (FALSE);
187 }
188