projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 2939c778 EC |
1 | /** @file\r |
| 2 | * Exception Handling support specific for AArch64\r | |
| 3 | *\r | |
| 4 | * Copyright (c) 2016 HP Development Company, L.P.\r | |
| 5 | *\r | |
| 6 | * This program and the accompanying materials\r | |
| 7 | * are licensed and made available under the terms and conditions of the BSD License\r | |
| 8 | * which accompanies this distribution. The full text of the license may be found at\r | |
| 9 | * http://opensource.org/licenses/bsd-license.php\r | |
| 10 | *\r | |
| 11 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 13 | *\r | |
| 14 | **/\r | |
| 15 | \r | |
| 16 | #include <Uefi.h>\r | |
| 17 | \r | |
| 18 | #include <Chipset/AArch64.h>\r | |
| 19 | \r | |
| 20 | #include <Protocol/DebugSupport.h> // for MAX_AARCH64_EXCEPTION\r | |
| 21 | \r | |
| 22 | UINTN gMaxExceptionNumber = MAX_AARCH64_EXCEPTION;\r | |
| 23 | EFI_EXCEPTION_CALLBACK gExceptionHandlers[MAX_AARCH64_EXCEPTION + 1] = { 0 };\r | |
| 24 | EFI_EXCEPTION_CALLBACK gDebuggerExceptionHandlers[MAX_AARCH64_EXCEPTION + 1] = { 0 };\r | |
| 25 | PHYSICAL_ADDRESS gExceptionVectorAlignmentMask = ARM_VECTOR_TABLE_ALIGNMENT;\r | |
| 26 | UINTN gDebuggerNoHandlerValue = 0; // todo: define for AArch64\r | |
| 27 | \r | |
| 28 | RETURN_STATUS ArchVectorConfig(\r | |
| 29 | IN UINTN VectorBaseAddress\r | |
| 30 | )\r | |
| 31 | {\r | |
| 32 | UINTN HcrReg;\r | |
| 33 | \r | |
| 34 | if (ArmReadCurrentEL() == AARCH64_EL2) {\r | |
| 35 | HcrReg = ArmReadHcr();\r | |
| 36 | \r | |
| 37 | // Trap General Exceptions. All exceptions that would be routed to EL1 are routed to EL2\r | |
| 38 | HcrReg |= ARM_HCR_TGE;\r | |
| 39 | \r | |
| 40 | ArmWriteHcr(HcrReg);\r | |
| 41 | }\r | |
| 42 | \r | |
| 43 | return RETURN_SUCCESS;\r | |
| 44 | }\r |