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source/draw.c

@@ -7,9 +7,28 @@
 #include "draw.h"
 #include "fs.h"
 #include "memory.h"
+#include "types.h"
 
 static struct fb* fb = (struct fb*) 0x23FFFE00;
 
+void shutdownLCD(void){
+
+    vu32 *arm11 = (vu32*)0x1FFFFFF8;
+
+    //Clear ARM11 entry offset
+    *arm11 = 0;
+
+    //Shutdown LCDs
+    *(vu32*)0x10202A44 = 0;
+    *(vu32*)0x10202244 = 0;
+    *(vu32*)0x10202014 = 0;
+    
+    //Wait for the ARM11 entrypoint to be set
+    while (!*arm11);
+    //Jump to it
+    ((void (*)())*arm11)();
+}
+
 void clearScreen(void){
     memset(fb->top_left, 0, 0x38400);
     memset(fb->top_right, 0, 0x38400);
@@ -20,6 +39,6 @@ void loadSplash(void){
     //Check if it's a no-screen-init A9LH boot via PDN_GPU_CNT
     if (*((u8*)0x10141200) == 0x1) return;
     clearScreen();
-    if(fileRead(fb->top_left, "/rei/splash.bin", 0x46500) != 0) return;
-    unsigned i,t; for(t=220;t>0;t--){for(i=0xFFFF;i>0;i--);}; //Ghetto sleep func
+    fileRead(fb->top_left, "/rei/splash.bin", 0);
+    u64 i = 0xFFFFFF; while(--i) __asm("mov r0, r0"); //Less Ghetto sleep func
 }

source/draw.h

@@ -12,4 +12,5 @@ struct fb {
     u8 *bottom;
 };
 
-void loadSplash(void);
+void loadSplash(void);
+void shutdownLCD(void);

source/firm.c

@@ -10,10 +10,10 @@
 #include "fs.h"
 #include "emunand.h"
 #include "crypto.h"
+#include "draw.h"
 
 firmHeader *firmLocation = (firmHeader *)0x24000000;
 firmSectionHeader *section;
-vu32 *arm11Entry = (vu32*)0x1FFFFFF8;
 u32 firmSize = 0;
 u8  mode = 1,
     console = 1,
@@ -148,8 +148,8 @@ u8 patchFirm(void){
 
     //Patch ARM9 entrypoint on N3DS to skip arm9loader
     if(console){
-        u32 *arm9Entry = (u32*)&firmLocation->arm9Entry;
-        *arm9Entry = 0x801B01C;
+        u32 *arm9 = (u32*)&firmLocation->arm9Entry;
+        *arm9 = 0x801B01C;
     }
 
     //Patch FIRM reboots, not on 9.0 FIRM as it breaks firmlaunchhax
@@ -176,29 +176,20 @@ u8 patchFirm(void){
     return 0;
 }
 
-//De-initialize the screens, fixes N3DS 3D
-void __attribute__((naked)) deinitScreen(void)
-{
-    *arm11Entry = 0;
-
-    *(vu32*)0x10202A44 = 0;
-    *(vu32*)0x10202244 = 0;
-    *(vu32*)0x10202014 = 0;
-
-    while (!*arm11Entry);
-    ((void (*)())*arm11Entry)();
-}
-
-//Firmlaunchhax
 void launchFirm(void){
 
     //Copy firm partitions to respective memory locations
     memcpy(section[0].address, (u8*)firmLocation + section[0].offset, section[0].size);
     memcpy(section[1].address, (u8*)firmLocation + section[1].offset, section[1].size);
     memcpy(section[2].address, (u8*)firmLocation + section[2].offset, section[2].size);
-    *arm11Entry = (u32)deinitScreen;
-    while (*arm11Entry);
-    *arm11Entry = (u32)firmLocation->arm11Entry;
+
+    //Run ARM11 screen stuff
+    vu32 *arm11 = (vu32*)0x1FFFFFF8;
+    *arm11 = (u32)shutdownLCD;
+    while (*arm11);
+    
+    //Set ARM11 kernel
+    *arm11 = (u32)firmLocation->arm11Entry;
     
     //Final jump to arm9 binary
     ((void (*)())firmLocation->arm9Entry)();

source/types.h

@@ -13,8 +13,11 @@
 typedef uint8_t u8;
 typedef uint16_t u16;
 typedef uint32_t u32;
-typedef volatile u32 vu32;
 typedef uint64_t u64;
+typedef volatile uint8_t vu8;
+typedef volatile uint16_t vu16;
+typedef volatile uint32_t vu32;
+typedef volatile uint64_t vu64;
 
 //FIRM Header layout
 typedef struct firmSectionHeader {