1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Write an ACPI Firmware ACPI Control Structure (FACS) table
4 *
5 * Copyright 2021 Google LLC
6 */
7
8#define LOG_CATEGORY LOGC_ACPI
9
10#include <acpi/acpi_table.h>
11#include <dm/acpi.h>
12#include <linux/string.h>
13
14int acpi_write_facs(struct acpi_ctx *ctx, const struct acpi_writer *entry)
15{
16	struct acpi_facs *facs = ctx->current;
17
18	memset((void *)facs, '\0', sizeof(struct acpi_facs));
19
20	memcpy(facs->signature, "FACS", 4);
21	facs->length = sizeof(struct acpi_facs);
22	facs->hardware_signature = 0;
23	facs->firmware_waking_vector = 0;
24	facs->global_lock = 0;
25	facs->flags = 0;
26	facs->x_firmware_waking_vector_l = 0;
27	facs->x_firmware_waking_vector_h = 0;
28	facs->version = 1;
29
30	ctx->facs = facs;
31	acpi_inc(ctx, sizeof(struct acpi_facs));
32
33	return 0;
34}
35ACPI_WRITER(1facs, "FACS", acpi_write_facs, 0);
36