linux-imx

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0

/******************************************************************************

 *

 * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces

 *

 * Copyright (C) 2000 - 2019, Intel Corp.

 *

 *****************************************************************************/

​

#define EXPORT_ACPI_INTERFACES

​

#include <acpi/acpi.h>

#include "accommon.h"

​

#define _COMPONENT          ACPI_HARDWARE

ACPI_MODULE_NAME("hwxfsleep")

​

/* Local prototypes */

#if (!ACPI_REDUCED_HARDWARE)

static acpi_status

acpi_hw_set_firmware_waking_vector(struct acpi_table_facs *facs,

                   acpi_physical_address physical_address,

                   acpi_physical_address physical_address64);

#endif

​

/*

 * These functions are removed for the ACPI_REDUCED_HARDWARE case:

 *      acpi_set_firmware_waking_vector

 *      acpi_enter_sleep_state_s4bios

 */

​

#if (!ACPI_REDUCED_HARDWARE)

/*******************************************************************************

 *

 * FUNCTION:    acpi_hw_set_firmware_waking_vector

 *

 * PARAMETERS:  facs                - Pointer to FACS table

 *              physical_address    - 32-bit physical address of ACPI real mode

 *                                    entry point

 *              physical_address64  - 64-bit physical address of ACPI protected

 *                                    mode entry point

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Sets the firmware_waking_vector fields of the FACS

 *

 ******************************************************************************/

​

static acpi_status

acpi_hw_set_firmware_waking_vector(struct acpi_table_facs *facs,

                   acpi_physical_address physical_address,

                   acpi_physical_address physical_address64)

{

    ACPI_FUNCTION_TRACE(acpi_hw_set_firmware_waking_vector);

​

​

    /*

     * According to the ACPI specification 2.0c and later, the 64-bit

     * waking vector should be cleared and the 32-bit waking vector should

     * be used, unless we want the wake-up code to be called by the BIOS in

     * Protected Mode.  Some systems (for example HP dv5-1004nr) are known

     * to fail to resume if the 64-bit vector is used.

     */