From afeb7e4f00eff33e9e1cfcb766825e7c87f5f1d1 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 21 Feb 2021 15:45:41 +0100
Subject: Activated SSE/FPU features for better performance

---
 kernel/drivers/fpu.c   | 24 ------------------------
 kernel/drivers/mouse.c |  4 ++++
 2 files changed, 4 insertions(+), 24 deletions(-)
 delete mode 100644 kernel/drivers/fpu.c

(limited to 'kernel/drivers')

diff --git a/kernel/drivers/fpu.c b/kernel/drivers/fpu.c
deleted file mode 100644
index e61e267..0000000
--- a/kernel/drivers/fpu.c
+++ /dev/null
@@ -1,24 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <def.h>
-
-void set_fpu_cw(const u16 cw)
-{
-	__asm__ volatile("fldcw %0" ::"m"(cw));
-}
-
-void fpu_install(void)
-{
-	__asm__ volatile("clts");
-	u32 t = 0;
-	__asm__ volatile("mov %%cr0, %0" : "=r"(t));
-	t &= (u32) ~(1 << 2);
-	t |= (1 << 1);
-	__asm__ volatile("mov %0, %%cr0" ::"r"(t));
-
-	__asm__ volatile("mov %%cr4, %0" : "=r"(t));
-	t |= 3 << 9;
-	__asm__ volatile("mov %0, %%cr4" ::"r"(t));
-
-	__asm__ volatile("fninit");
-}
diff --git a/kernel/drivers/mouse.c b/kernel/drivers/mouse.c
index 6f329aa..e2f7311 100644
--- a/kernel/drivers/mouse.c
+++ b/kernel/drivers/mouse.c
@@ -116,6 +116,10 @@ void mouse_install(void)
 	mouse_serial_wait(1);
 	outb(0x60, status);
 
+	// Use default settings
+	mouse_serial_write(0xF6);
+	mouse_serial_read();
+
 	// Enable mousewheel
 	mouse_serial_write(0xF2);
 	mouse_serial_read();
-- 
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