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Kernel: Simplify reboot & poweroff code flow a bit

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Instead of using ifdefs to use the correct platform-specific methods, we
can just use the same pattern we use for the microseconds_delay function
which has specific implementations for each Arch CPU subdirectory.

When linking a kernel image, the actual correct and platform-specific
power-state changing methods will be called in Firmware/PowerState.cpp
file.
This commit is contained in:
Liav A 2023-06-09 22:13:04 +03:00 • committed by Jelle Raaijmakers
parent 5c8405c455
commit 9b8b8c0e04
8 changed files with 138 additions and 53 deletions
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53
Kernel/FileSystem/SysFS/Subsystems/Kernel/PowerStateSwitch.cpp
View file

@ -6,15 +6,10 @@
*/
#include <AK/Platform.h>
#if ARCH(X86_64)
# include <Kernel/Arch/x86_64/I8042Reboot.h>
# include <Kernel/Arch/x86_64/Shutdown.h>
#elif ARCH(AARCH64)
# include <Kernel/Arch/aarch64/RPi/Watchdog.h>
#endif
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/PowerStateSwitch.h>
#include <Kernel/Firmware/ACPI/Parser.h>
#include <Kernel/Firmware/PowerState.h>
#include <Kernel/Sections.h>
#include <Kernel/TTY/ConsoleManagement.h>
#include <Kernel/Tasks/Process.h>
@ -60,55 +55,13 @@ ErrorOr<size_t> SysFSPowerStateSwitchNode::write_bytes(off_t offset, size_t coun
TRY(data.read(buf, 1));
switch (buf[0]) {
case '1':
reboot();
Firmware::reboot();
VERIFY_NOT_REACHED();
case '2':
poweroff();
Firmware::poweroff();
VERIFY_NOT_REACHED();
default:
return Error::from_errno(EINVAL);
}
}
void SysFSPowerStateSwitchNode::reboot()
{
MutexLocker locker(Process::current().big_lock());
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();
#if ARCH(X86_64)
i8042_reboot();
#endif
dbgln("reboot attempts failed, applications will stop responding.");
dmesgln("Reboot can't be completed. It's safe to turn off the computer!");
Processor::halt();
}
void SysFSPowerStateSwitchNode::poweroff()
{
MutexLocker locker(Process::current().big_lock());
ConsoleManagement::the().switch_to_debug();
dbgln("acquiring FS locks...");
FileSystem::lock_all();
dbgln("syncing mounted filesystems...");
FileSystem::sync();
dbgln("attempting system shutdown...");
#if ARCH(X86_64)
qemu_shutdown();
virtualbox_shutdown();
#elif ARCH(AARCH64)
RPi::Watchdog::the().system_shutdown();
#endif
dbgln("shutdown attempts failed, applications will stop responding.");
dmesgln("Shutdown can't be completed. It's safe to turn off the computer!");
Processor::halt();
}
}

3
Kernel/FileSystem/SysFS/Subsystems/Kernel/PowerStateSwitch.h
View file

@ -29,9 +29,6 @@ public:
private:
explicit SysFSPowerStateSwitchNode(SysFSDirectory const&);
void reboot();
void poweroff();
};
}