projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| ea62bb76 AB |
1 | /** @file\r |
| 2 | FDT client library for ARM's TimerDxe\r | |
| 3 | \r | |
| 4 | Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>\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 <Library/BaseLib.h>\r | |
| 19 | #include <Library/DebugLib.h>\r | |
| 20 | #include <Library/PcdLib.h>\r | |
| 21 | #include <Library/UefiBootServicesTableLib.h>\r | |
| 22 | \r | |
| 23 | #include <Protocol/FdtClient.h>\r | |
| 24 | \r | |
| 25 | #pragma pack (1)\r | |
| 26 | typedef struct {\r | |
| 27 | UINT32 Type;\r | |
| 28 | UINT32 Number;\r | |
| 29 | UINT32 Flags;\r | |
| 30 | } INTERRUPT_PROPERTY;\r | |
| 31 | #pragma pack ()\r | |
| 32 | \r | |
| 33 | RETURN_STATUS\r | |
| 34 | EFIAPI\r | |
| 35 | ArmVirtTimerFdtClientLibConstructor (\r | |
| 36 | VOID\r | |
| 37 | )\r | |
| 38 | {\r | |
| 39 | EFI_STATUS Status;\r | |
| 40 | FDT_CLIENT_PROTOCOL *FdtClient;\r | |
| 41 | CONST INTERRUPT_PROPERTY *InterruptProp;\r | |
| 42 | UINT32 PropSize;\r | |
| 43 | INT32 SecIntrNum, IntrNum, VirtIntrNum, HypIntrNum;\r | |
| 44 | \r | |
| 45 | Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,\r | |
| 46 | (VOID **)&FdtClient);\r | |
| 47 | ASSERT_EFI_ERROR (Status);\r | |
| 48 | \r | |
| 49 | Status = FdtClient->FindCompatibleNodeProperty (FdtClient, "arm,armv7-timer",\r | |
| 50 | "interrupts", (CONST VOID **)&InterruptProp,\r | |
| 51 | &PropSize);\r | |
| 52 | if (Status == EFI_NOT_FOUND) {\r | |
| 53 | Status = FdtClient->FindCompatibleNodeProperty (FdtClient,\r | |
| 54 | "arm,armv8-timer", "interrupts",\r | |
| 55 | (CONST VOID **)&InterruptProp,\r | |
| 56 | &PropSize);\r | |
| 57 | }\r | |
| 58 | \r | |
| 59 | if (EFI_ERROR (Status)) {\r | |
| 60 | return Status;\r | |
| 61 | }\r | |
| 62 | \r | |
| 63 | //\r | |
| 64 | // - interrupts : Interrupt list for secure, non-secure, virtual and\r | |
| 65 | // hypervisor timers, in that order.\r | |
| 66 | //\r | |
| 67 | ASSERT (PropSize == 36 || PropSize == 48);\r | |
| 68 | \r | |
| 69 | SecIntrNum = SwapBytes32 (InterruptProp[0].Number)\r | |
| 70 | + (InterruptProp[0].Type ? 16 : 0);\r | |
| 71 | IntrNum = SwapBytes32 (InterruptProp[1].Number)\r | |
| 72 | + (InterruptProp[1].Type ? 16 : 0);\r | |
| 73 | VirtIntrNum = SwapBytes32 (InterruptProp[2].Number)\r | |
| 74 | + (InterruptProp[2].Type ? 16 : 0);\r | |
| 75 | HypIntrNum = PropSize < 48 ? 0 : SwapBytes32 (InterruptProp[3].Number)\r | |
| 76 | + (InterruptProp[3].Type ? 16 : 0);\r | |
| 77 | \r | |
| 78 | DEBUG ((EFI_D_INFO, "Found Timer interrupts %d, %d, %d, %d\n",\r | |
| 79 | SecIntrNum, IntrNum, VirtIntrNum, HypIntrNum));\r | |
| 80 | \r | |
| 81 | PcdSet32 (PcdArmArchTimerSecIntrNum, SecIntrNum);\r | |
| 82 | PcdSet32 (PcdArmArchTimerIntrNum, IntrNum);\r | |
| 83 | PcdSet32 (PcdArmArchTimerVirtIntrNum, VirtIntrNum);\r | |
| 84 | PcdSet32 (PcdArmArchTimerHypIntrNum, HypIntrNum);\r | |
| 85 | \r | |
| 86 | return EFI_SUCCESS;\r | |
| 87 | }\r |