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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/Firmware/ACPI/Parser.h>
#include <Kernel/IO.h>
#include <Kernel/Process.h>
#include <Kernel/TTY/ConsoleManagement.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$reboot()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
if (!is_superuser())
return EPERM;
REQUIRE_NO_PROMISES;
dbgln("acquiring FS locks...");
FileSystem::lock_all();
dbgln("syncing mounted filesystems...");
FileSystem::sync();
dbgln("attempting reboot via ACPI");
if (ACPI::is_enabled())
ACPI::Parser::the()->try_acpi_reboot();
dbgln("attempting reboot via KB Controller...");
IO::out8(0x64, 0xFE);
return 0;
}
KResultOr<FlatPtr> Process::sys$halt()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
if (!is_superuser())
return EPERM;
REQUIRE_NO_PROMISES;
ConsoleManagement::the().switch_to_debug();
dbgln("acquiring FS locks...");
FileSystem::lock_all();
dbgln("syncing mounted filesystems...");
FileSystem::sync();
dbgln("attempting system shutdown...");
// QEMU Shutdown
IO::out16(0x604, 0x2000);
// If we're here, the shutdown failed. Try VirtualBox shutdown.
IO::out16(0x4004, 0x3400);
// VirtualBox shutdown failed. Try Bochs/Old QEMU shutdown.
IO::out16(0xb004, 0x2000);
dbgln("shutdown attempts failed, applications will stop responding.");
dmesgln("Shutdown can't be completed. It's safe to turn off the computer!");
Processor::halt();
}
}
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