/* For acpi_exec only */ void ae_do_object_overrides(void);
/******************************************************************************* * * FUNCTION: acpi_initialize_subsystem * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Initializes all global variables. This is the first function * called, so any early initialization belongs here. *
******************************************************************************/
status = acpi_os_initialize(); if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
return_ACPI_STATUS(status);
}
/* Initialize all globals used by the subsystem */
status = acpi_ut_init_globals(); if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During initialization of globals"));
return_ACPI_STATUS(status);
}
/* Create the default mutex objects */
status = acpi_ut_mutex_initialize(); 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 = acpi_ns_root_initialize(); 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 = acpi_ut_initialize_interfaces(); if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During OSI interfaces initialization"));
return_ACPI_STATUS(status);
}
/******************************************************************************* * * FUNCTION: acpi_enable_subsystem * * PARAMETERS: flags - Init/enable Options * * RETURN: Status * * DESCRIPTION: Completes the subsystem initialization including hardware. * Puts system into ACPI mode if it isn't already. *
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
/* * 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.
*/
acpi_gbl_early_initialization = FALSE;
/* * 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 = acpi_tb_initialize_facs(); if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
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"));
acpi_gbl_original_mode = acpi_hw_get_mode();
status = acpi_enable(); if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
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 global_lock 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 = acpi_ev_initialize_events(); 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 = acpi_ev_install_xrupt_handlers(); if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} #endif/* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem)
/******************************************************************************* * * FUNCTION: acpi_initialize_objects * * PARAMETERS: flags - Init/enable Options * * RETURN: Status * * DESCRIPTION: Completes namespace initialization by initializing device * objects and executing AML code for Regions, buffers, etc. *
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_initialize_objects(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_initialize_objects);
#ifdef ACPI_OBSOLETE_BEHAVIOR /* * 05/2019: Removed, initialization now happens at both object * creation and table load time
*/
/* * Initialize the objects that remain uninitialized. This * runs the executable AML that may be part of the * declaration of these objects: operation_regions, buffer_fields, * bank_fields, Buffers, and Packages.
*/ if (!(flags & ACPI_NO_OBJECT_INIT)) {
status = acpi_ns_initialize_objects(); if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} #endif
/* * Initialize all device/region objects in the namespace. This runs * the device _STA and _INI methods and region _REG methods.
*/ if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) {
status = acpi_ns_initialize_devices(flags); if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* * Empty the caches (delete the cached objects) on the assumption that * the table load filled them up more than they will be at runtime -- * thus wasting non-paged memory.
*/
status = acpi_purge_cached_objects();
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