| | 1 | /** @file\r |
| | 2 | *\r |
| | 3 | * Copyright (c) 2011, ARM Limited. All rights reserved.\r |
| | 4 | * \r |
| | 5 | * This program and the accompanying materials \r |
| | 6 | * are licensed and made available under the terms and conditions of the BSD License \r |
| | 7 | * which accompanies this distribution. The full text of the license may be found at \r |
| | 8 | * http://opensource.org/licenses/bsd-license.php \r |
| | 9 | *\r |
| | 10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| | 11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| | 12 | *\r |
| | 13 | **/\r |
| | 14 | \r |
| | 15 | #include <Uefi.h>\r |
| | 16 | #include <Library/IoLib.h>\r |
| | 17 | #include <Drivers/PL390Gic.h>\r |
| | 18 | \r |
| | 19 | \r |
| | 20 | VOID\r |
| | 21 | EFIAPI\r |
| | 22 | PL390GicEnableInterruptInterface (\r |
| | 23 | IN INTN GicInterruptInterfaceBase\r |
| | 24 | )\r |
| | 25 | { \r |
| | 26 | /*\r |
| | 27 | * Enable the CPU interface in Non-Secure world\r |
| | 28 | * Note: The ICCICR register is banked when Security extensions are implemented\r |
| | 29 | */\r |
| | 30 | MmioWrite32 (GicInterruptInterfaceBase + GIC_ICCICR,0x00000001);\r |
| | 31 | }\r |
| | 32 | \r |
| | 33 | VOID\r |
| | 34 | EFIAPI\r |
| | 35 | PL390GicEnableDistributor (\r |
| | 36 | IN INTN GicDistributorBase\r |
| | 37 | )\r |
| | 38 | {\r |
| | 39 | /*\r |
| | 40 | * Enable GIC distributor in Non-Secure world.\r |
| | 41 | * Note: The ICDDCR register is banked when Security extensions are implemented\r |
| | 42 | */\r |
| | 43 | MmioWrite32 (GicDistributorBase + GIC_ICDDCR, 0x00000001);\r |
| | 44 | }\r |
| | 45 | \r |
| | 46 | VOID\r |
| | 47 | EFIAPI\r |
| | 48 | PL390GicSendSgiTo (\r |
| | 49 | IN INTN GicDistributorBase,\r |
| | 50 | IN INTN TargetListFilter,\r |
| | 51 | IN INTN CPUTargetList\r |
| | 52 | )\r |
| | 53 | {\r |
| | 54 | MmioWrite32 (GicDistributorBase + GIC_ICDSGIR, ((TargetListFilter & 0x3) << 24) | ((CPUTargetList & 0xFF) << 16));\r |
| | 55 | }\r |
| | 56 | \r |
| | 57 | UINT32\r |
| | 58 | EFIAPI\r |
| | 59 | PL390GicAcknowledgeSgiFrom (\r |
| | 60 | IN INTN GicInterruptInterfaceBase,\r |
| | 61 | IN INTN CoreId\r |
| | 62 | )\r |
| | 63 | {\r |
| | 64 | INTN InterruptId;\r |
| | 65 | \r |
| | 66 | InterruptId = MmioRead32 (GicInterruptInterfaceBase + GIC_ICCIAR);\r |
| | 67 | \r |
| | 68 | // Check if the Interrupt ID is valid, The read from Interrupt Ack register returns CPU ID and Interrupt ID\r |
| | 69 | if (((CoreId & 0x7) << 10) == (InterruptId & 0x1C00)) {\r |
| | 70 | // Got SGI number 0 hence signal End of Interrupt by writing to ICCEOIR\r |
| | 71 | MmioWrite32 (GicInterruptInterfaceBase + GIC_ICCEIOR, InterruptId);\r |
| | 72 | return 1;\r |
| | 73 | } else {\r |
| | 74 | return 0;\r |
| | 75 | }\r |
| | 76 | }\r |
| | 77 | \r |
| | 78 | UINT32\r |
| | 79 | EFIAPI\r |
| | 80 | PL390GicAcknowledgeSgi2From (\r |
| | 81 | IN INTN GicInterruptInterfaceBase,\r |
| | 82 | IN INTN CoreId,\r |
| | 83 | IN INTN SgiId\r |
| | 84 | )\r |
| | 85 | {\r |
| | 86 | INTN InterruptId;\r |
| | 87 | \r |
| | 88 | InterruptId = MmioRead32(GicInterruptInterfaceBase + GIC_ICCIAR);\r |
| | 89 | \r |
| | 90 | // Check if the Interrupt ID is valid, The read from Interrupt Ack register returns CPU ID and Interrupt ID\r |
| | 91 | if((((CoreId & 0x7) << 10) | (SgiId & 0x3FF)) == (InterruptId & 0x1FFF)) {\r |
| | 92 | // Got SGI number 0 hence signal End of Interrupt by writing to ICCEOIR\r |
| | 93 | MmioWrite32 (GicInterruptInterfaceBase + GIC_ICCEIOR, InterruptId);\r |
| | 94 | return 1;\r |
| | 95 | } else {\r |
| | 96 | return 0;\r |
| | 97 | }\r |
| | 98 | }\r |
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