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// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel CE4100 platform specific setup code
*
* (C) Copyright 2010 Intel Corporation
*/
#include <linux/init.h>
#include <linux/reboot.h>
#include <asm/ce4100.h>
#include <asm/prom.h>
#include <asm/setup.h>
#include <asm/io.h>
/*
* The CE4100 platform has an internal 8051 Microcontroller which is
* responsible for signaling to the external Power Management Unit the
* intention to reset, reboot or power off the system. This 8051 device has
* its command register mapped at I/O port 0xcf9 and the value 0x4 is used
* to power off the system.
*/
static void ce4100_power_off(void)
{
outb(0x4, 0xcf9);
}
static void __init sdv_arch_setup(void)
{
sdv_serial_fixup();
}
static void sdv_pci_init(void)
{
x86_of_pci_init();
}
/*
* CE4100 specific x86_init function overrides and early setup
* calls.
*/
void __init x86_ce4100_early_setup(void)
{
x86_init.oem.arch_setup = sdv_arch_setup;
x86_init.resources.probe_roms = x86_init_noop;
x86_init.mpparse.find_mptable = x86_init_noop;
x86_init.mpparse.early_parse_smp_cfg = x86_init_noop;
x86_init.pci.init = ce4100_pci_init;
x86_init.pci.init_irq = sdv_pci_init;
/*
* By default, the reboot method is ACPI which is supported by the
* CE4100 bootloader CEFDK using FADT.ResetReg Address and ResetValue
* the bootloader will however issue a system power off instead of
* reboot. By using BOOT_KBD we ensure proper system reboot as
* expected.
*/
reboot_type = BOOT_KBD;
pm_power_off = ce4100_power_off;
}
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