ACPI_STATUS AcpiEnableSubsystem ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); /* * The early initialization phase is complete. The namespace is loaded, * and we can now support address spaces other than Memory, I/O, and * PCI_Config. */ AcpiGbl_EarlyInitialization = FALSE; /* * Install the default operation region handlers. These are the * handlers that are defined by the ACPI specification to be * "always accessible" -- namely, SystemMemory, SystemIO, and * PCI_Config. This also means that no _REG methods need to be * run for these address spaces. We need to have these handlers * installed before any AML code can be executed, especially any * module-level code (11/2015). */ if (!AcpiGbl_GroupModuleLevelCode) { Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Region initialization")); return_ACPI_STATUS (Status); } } #if (!ACPI_REDUCED_HARDWARE) /* Enable ACPI mode */ if (!(Flags & ACPI_NO_ACPI_ENABLE)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); AcpiGbl_OriginalMode = AcpiHwGetMode(); Status = AcpiEnable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); return_ACPI_STATUS (Status); } } /* * Obtain a permanent mapping for the FACS. This is required for the * Global Lock and the Firmware Waking Vector */ if (!(Flags & ACPI_NO_FACS_INIT)) { Status = AcpiTbInitializeFacs (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); return_ACPI_STATUS (Status); } } /* * Initialize ACPI Event handling (Fixed and General Purpose) * * Note1: We must have the hardware and events initialized before we can * execute any control methods safely. Any control method can require * ACPI hardware support, so the hardware must be fully initialized before * any method execution! * * Note2: Fixed events are initialized and enabled here. GPEs are * initialized, but cannot be enabled until after the hardware is * completely initialized (SCI and GlobalLock activated) and the various * initialization control methods are run (_REG, _STA, _INI) on the * entire namespace. */ if (!(Flags & ACPI_NO_EVENT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n")); Status = AcpiEvInitializeEvents (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Install the SCI handler and Global Lock handler. This completes the * hardware initialization. */ if (!(Flags & ACPI_NO_HANDLER_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n")); Status = AcpiEvInstallXruptHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } #endif /* !ACPI_REDUCED_HARDWARE */ return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEnableSubsystem ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); #if (!ACPI_REDUCED_HARDWARE) /* Enable ACPI mode */ if (!(Flags & ACPI_NO_ACPI_ENABLE)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); AcpiGbl_OriginalMode = AcpiHwGetMode(); Status = AcpiEnable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); return_ACPI_STATUS (Status); } } /* * Obtain a permanent mapping for the FACS. This is required for the * Global Lock and the Firmware Waking Vector */ Status = AcpiTbInitializeFacs (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); return_ACPI_STATUS (Status); } #endif /* !ACPI_REDUCED_HARDWARE */ /* * Install the default OpRegion handlers. These are installed unless * other handlers have already been installed via the * InstallAddressSpaceHandler interface. */ if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing default address space handlers\n")); Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } #if (!ACPI_REDUCED_HARDWARE) /* * Initialize ACPI Event handling (Fixed and General Purpose) * * Note1: We must have the hardware and events initialized before we can * execute any control methods safely. Any control method can require * ACPI hardware support, so the hardware must be fully initialized before * any method execution! * * Note2: Fixed events are initialized and enabled here. GPEs are * initialized, but cannot be enabled until after the hardware is * completely initialized (SCI and GlobalLock activated) and the various * initialization control methods are run (_REG, _STA, _INI) on the * entire namespace. */ if (!(Flags & ACPI_NO_EVENT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n")); Status = AcpiEvInitializeEvents (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Install the SCI handler and Global Lock handler. This completes the * hardware initialization. */ if (!(Flags & ACPI_NO_HANDLER_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n")); Status = AcpiEvInstallXruptHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } #endif /* !ACPI_REDUCED_HARDWARE */ return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiInitializeSubsystem ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); /* Initialize the OS-Dependent layer */ Status = AcpiOsInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization")); return_ACPI_STATUS (Status); } /* Initialize all globals used by the subsystem */ Status = AcpiUtInitGlobals (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals")); return_ACPI_STATUS (Status); } /* Create the default mutex objects */ Status = AcpiUtMutexInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation")); return_ACPI_STATUS (Status); } /* * Initialize the namespace manager and * the root of the namespace tree */ Status = AcpiNsRootInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization")); return_ACPI_STATUS (Status); } /* Initialize the global OSI interfaces list with the static names */ Status = AcpiUtInitializeInterfaces (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization")); return_ACPI_STATUS (Status); } if (!AcpiGbl_OverrideDefaultRegionHandlers) { /* * Install the default operation region handlers. These are the * handlers that are defined by the ACPI specification to be * "always accessible" -- namely, SystemMemory, SystemIO, and * PCI_Config. This also means that no _REG methods need to be * run for these address spaces. We need to have these handlers * installed before any AML code can be executed, especially any * module-level code (11/2015). */ Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Region initialization")); return_ACPI_STATUS (Status); } } return_ACPI_STATUS (AE_OK); }
ACPI_STATUS AcpiLoadTables ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiLoadTables); /* * Install the default operation region handlers. These are the * handlers that are defined by the ACPI specification to be * "always accessible" -- namely, SystemMemory, SystemIO, and * PCI_Config. This also means that no _REG methods need to be * run for these address spaces. We need to have these handlers * installed before any AML code can be executed, especially any * module-level code (11/2015). * Note that we allow OSPMs to install their own region handlers * between AcpiInitializeSubsystem() and AcpiLoadTables() to use * their customized default region handlers. */ Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Region initialization")); return_ACPI_STATUS (Status); } /* Load the namespace from the tables */ Status = AcpiTbLoadNamespace (); /* Don't let single failures abort the load */ if (Status == AE_CTRL_TERMINATE) { Status = AE_OK; } if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "While loading namespace from ACPI tables")); } if (!AcpiGbl_GroupModuleLevelCode) { /* * Initialize the objects that remain uninitialized. This * runs the executable AML that may be part of the * declaration of these objects: * OperationRegions, BufferFields, Buffers, and Packages. */ Status = AcpiNsInitializeObjects (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } AcpiGbl_NamespaceInitialized = TRUE; return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEnableSubsystem ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); /* Enable ACPI mode */ if (!(Flags & ACPI_NO_ACPI_ENABLE)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); AcpiGbl_OriginalMode = AcpiHwGetMode(); Status = AcpiEnable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); return_ACPI_STATUS (Status); } } /* * Install the default OpRegion handlers. These are installed unless * other handlers have already been installed via the * InstallAddressSpaceHandler interface. */ if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing default address space handlers\n")); Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Initialize ACPI Event handling (Fixed and General Purpose) * * Note1: We must have the hardware and events initialized before we can * execute any control methods safely. Any control method can require * ACPI hardware support, so the hardware must be fully initialized before * any method execution! * * Note2: Fixed events are initialized and enabled here. GPEs are * initialized, but cannot be enabled until after the hardware is * completely initialized (SCI and GlobalLock activated) */ if (!(Flags & ACPI_NO_EVENT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n")); Status = AcpiEvInitializeEvents (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Install the SCI handler and Global Lock handler. This completes the * hardware initialization. */ if (!(Flags & ACPI_NO_HANDLER_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n")); Status = AcpiEvInstallXruptHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } /* * Complete the GPE initialization for the GPE blocks defined in the FADT * (GPE block 0 and 1). * * Note1: This is where the _PRW methods are executed for the GPEs. These * methods can only be executed after the SCI and Global Lock handlers are * installed and initialized. * * Note2: Currently, there seems to be no need to run the _REG methods * before execution of the _PRW methods and enabling of the GPEs. */ if (!(Flags & ACPI_NO_EVENT_INIT)) { Status = AcpiEvInstallFadtGpes (); if (ACPI_FAILURE (Status)) { return (Status); } } return_ACPI_STATUS (Status); }