From 716974a9169cd4513e7faa67181e7ef96eef05b6 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Tue, 6 Sep 2022 12:13:43 +0200
Subject: [PATCH] Add a minimal shutdown method, that only works on emulators
 (at least for now)

---
 kernel/include/power/shutdown.h |  3 +++
 kernel/src/main.cpp             |  4 ++--
 kernel/src/power/shutdown.cpp   | 16 ++++++++++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 kernel/include/power/shutdown.h
 create mode 100644 kernel/src/power/shutdown.cpp

diff --git a/kernel/include/power/shutdown.h b/kernel/include/power/shutdown.h
new file mode 100644
index 00000000..4c620652
--- /dev/null
+++ b/kernel/include/power/shutdown.h
@@ -0,0 +1,3 @@
+#pragma once
+
+[[noreturn]] void shutdown();
\ No newline at end of file
diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index b79c8d62..f1fcbbdc 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -15,7 +15,7 @@
 #include "memory/KernelHeap.h"
 #include "memory/Memory.h"
 #include "panic/hang.h"
-#include "power/reboot.h"
+#include "power/shutdown.h"
 #include "render/BBRenderer.h"
 #include "render/Draw.h"
 #include "render/TextRenderer.h"
@@ -131,7 +131,7 @@ extern "C" void _start()
     }
 
     sleep(2500);
-    reboot();
+    shutdown();
 
     while (1) halt();
 loop:
diff --git a/kernel/src/power/shutdown.cpp b/kernel/src/power/shutdown.cpp
new file mode 100644
index 00000000..52e225b5
--- /dev/null
+++ b/kernel/src/power/shutdown.cpp
@@ -0,0 +1,16 @@
+#include "power/shutdown.h"
+#include "io/IO.h"
+#include "log/Log.h"
+#include "panic/hang.h"
+
+[[noreturn]] void shutdown()
+{
+    kinfoln("Attempting shutdown using the Bochs method");
+    IO::outw(0xB004, 0x2000);
+    kinfoln("Attempting shutdown using the QEMU method");
+    IO::outw(0x604, 0x2000);
+    kinfoln("Attempting shutdown using the VirtualBox method");
+    IO::outw(0x4004, 0x3400);
+    kerrorln("Failed to shutdown, halting. It is now safe to turn off your computer manually, though.");
+    hang();
+}
\ No newline at end of file