From 0dfb0011dd9d7e485ecbc8727f71d2f82b946930 Mon Sep 17 00:00:00 2001
From: red031000 <rubenru09@aol.com>
Date: Sun, 24 May 2020 18:12:56 +0100
Subject: OS_protectionUnit.c

---
 arm9/lib/src/OS_protectionUnit.c | 21 +++++++++++++++++++++
 arm9/lib/src/OS_reset.c          |  6 +++---
 2 files changed, 24 insertions(+), 3 deletions(-)
 create mode 100644 arm9/lib/src/OS_protectionUnit.c

(limited to 'arm9/lib/src')

diff --git a/arm9/lib/src/OS_protectionUnit.c b/arm9/lib/src/OS_protectionUnit.c
new file mode 100644
index 00000000..be57dcd6
--- /dev/null
+++ b/arm9/lib/src/OS_protectionUnit.c
@@ -0,0 +1,21 @@
+//
+// Created by red031000 on 2020-05-24.
+//
+
+#include "function_target.h"
+
+ARM_FUNC asm void OS_EnableProtectionUnit(void)
+{
+    mrc p15, 0x0, r0, c1, c0, 0x0
+    orr r0, r0, #0x1
+    mcr p15, 0x0, r0, c1, c0, 0x0
+    bx lr
+}
+
+ARM_FUNC asm void OS_DisableProtectionUnit(void)
+{
+    mrc p15, 0x0, r0, c1, c0, 0x0
+    bic r0, r0, #0x1
+    mcr p15, 0x0, r0, c1, c0, 0x0
+    bx lr
+}
diff --git a/arm9/lib/src/OS_reset.c b/arm9/lib/src/OS_reset.c
index 02498962..e051f6ff 100644
--- a/arm9/lib/src/OS_reset.c
+++ b/arm9/lib/src/OS_reset.c
@@ -11,15 +11,15 @@
 static u16 OSi_IsInitReset = 0;
 vu16 OSi_IsResetOccurred = 0;
 
-extern void PXI_Init();
+extern void PXI_Init(void);
 extern u32 PXI_IsCallbackReady(u32 param1, u32 param2);
 extern void PXI_SetFifoRecvCallback(u32 param1, void* callback);
 extern u32 PXI_SendWordByFifo(u32 param1, u32 data, u32 param2);
 extern void CARD_LockRom(u16 lockId);
 extern void MI_StopDma(u32 dma);
-extern void OSi_DoResetSystem(); //in itcm, should technically be in this file
+extern void OSi_DoResetSystem(void); //in itcm, should technically be in this file
 
-ARM_FUNC void OS_InitReset() {
+ARM_FUNC void OS_InitReset(void) {
     if (OSi_IsInitReset) {
         return;
     }
-- 
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