projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 93f6df5f LE |
1 | /** @file\r |
| 2 | DXE Reset System Library Shutdown API implementation for OVMF.\r | |
| 3 | \r | |
| 4 | Copyright (C) 2020, Red Hat, Inc.\r | |
| 5 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r | |
| 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 7 | **/\r | |
| 8 | \r | |
| 9 | #include <Base.h> // BIT13\r | |
| 10 | \r | |
| 11 | #include <Library/BaseLib.h> // CpuDeadLoop()\r | |
| 12 | #include <Library/DebugLib.h> // ASSERT()\r | |
| 13 | #include <Library/IoLib.h> // IoOr16()\r | |
| 14 | #include <Library/PcdLib.h> // PcdGet16()\r | |
| 15 | #include <Library/ResetSystemLib.h> // ResetShutdown()\r | |
| 16 | #include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE\r | |
| 17 | \r | |
| ac0a286f | 18 | STATIC UINT16 mAcpiPmBaseAddress;\r |
| 9afcd48a | 19 | STATIC UINT16 mAcpiHwReducedSleepCtl;\r |
| 93f6df5f LE |
20 | \r |
| 21 | EFI_STATUS\r | |
| 22 | EFIAPI\r | |
| 23 | DxeResetInit (\r | |
| ac0a286f MK |
24 | IN EFI_HANDLE ImageHandle,\r |
| 25 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
| 93f6df5f LE |
26 | )\r |
| 27 | {\r | |
| ac0a286f | 28 | UINT16 HostBridgeDevId;\r |
| 93f6df5f LE |
29 | \r |
| 30 | HostBridgeDevId = PcdGet16 (PcdOvmfHostBridgePciDevId);\r | |
| 31 | switch (HostBridgeDevId) {\r | |
| ac0a286f MK |
32 | case INTEL_82441_DEVICE_ID:\r |
| 33 | mAcpiPmBaseAddress = PIIX4_PMBA_VALUE;\r | |
| 34 | break;\r | |
| 35 | case INTEL_Q35_MCH_DEVICE_ID:\r | |
| 36 | mAcpiPmBaseAddress = ICH9_PMBASE_VALUE;\r | |
| 37 | break;\r | |
| 9afcd48a SB |
38 | case CLOUDHV_DEVICE_ID:\r |
| 39 | mAcpiHwReducedSleepCtl = CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS;\r | |
| 40 | break;\r | |
| ac0a286f MK |
41 | default:\r |
| 42 | ASSERT (FALSE);\r | |
| 43 | CpuDeadLoop ();\r | |
| 44 | return EFI_UNSUPPORTED;\r | |
| 93f6df5f LE |
45 | }\r |
| 46 | \r | |
| 47 | return EFI_SUCCESS;\r | |
| 48 | }\r | |
| 49 | \r | |
| 50 | /**\r | |
| 51 | Calling this function causes the system to enter a power state equivalent\r | |
| 52 | to the ACPI G2/S5 or G3 states.\r | |
| 53 | \r | |
| 54 | System shutdown should not return, if it returns, it means the system does\r | |
| 55 | not support shut down reset.\r | |
| 56 | **/\r | |
| 57 | VOID\r | |
| 58 | EFIAPI\r | |
| 59 | ResetShutdown (\r | |
| 60 | VOID\r | |
| 61 | )\r | |
| 62 | {\r | |
| 9afcd48a SB |
63 | if (mAcpiHwReducedSleepCtl) {\r |
| 64 | IoWrite8 (mAcpiHwReducedSleepCtl, 5 << 2 | 1 << 5);\r | |
| 65 | } else {\r | |
| 66 | IoBitFieldWrite16 (mAcpiPmBaseAddress + 4, 10, 13, 0);\r | |
| 67 | IoOr16 (mAcpiPmBaseAddress + 4, BIT13);\r | |
| 68 | }\r | |
| 69 | \r | |
| 93f6df5f LE |
70 | CpuDeadLoop ();\r |
| 71 | }\r |