linux/arch/x86/platform/intel-mid/intel-mid.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Intel MID platform setup code
 *
 * (C) Copyright 2008, 2012, 2021 Intel Corporation
 * Author: Jacob Pan ([email protected])
 * Author: Sathyanarayanan Kuppuswamy <[email protected]>
 */

#define pr_fmt(fmt) …

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/regulator/machine.h>
#include <linux/scatterlist.h>
#include <linux/irq.h>
#include <linux/export.h>
#include <linux/notifier.h>

#include <asm/setup.h>
#include <asm/mpspec_def.h>
#include <asm/hw_irq.h>
#include <asm/apic.h>
#include <asm/cpu_device_id.h>
#include <asm/io_apic.h>
#include <asm/intel-mid.h>
#include <asm/io.h>
#include <asm/i8259.h>
#include <asm/intel_scu_ipc.h>
#include <asm/reboot.h>

#define IPCMSG_COLD_OFF …
#define IPCMSG_COLD_RESET …

static void intel_mid_power_off(void)
{
	/* Shut down South Complex via PWRMU */
	intel_mid_pwr_power_off();

	/* Only for Tangier, the rest will ignore this command */
	intel_scu_ipc_dev_simple_command(NULL, IPCMSG_COLD_OFF, 1);
};

static void intel_mid_reboot(void)
{ … }

static void __init intel_mid_time_init(void)
{ … }

static void intel_mid_arch_setup(void)
{ … }

/*
 * Moorestown does not have external NMI source nor port 0x61 to report
 * NMI status. The possible NMI sources are from pmu as a result of NMI
 * watchdog or lock debug. Reading io port 0x61 results in 0xff which
 * misled NMI handler.
 */
static unsigned char intel_mid_get_nmi_reason(void)
{ … }

/*
 * Moorestown specific x86_init function overrides and early setup
 * calls.
 */
void __init x86_intel_mid_early_setup(void)
{ … }