From 92f3a736a7f0484a9d245502d8167d0a80bd9b6b Mon Sep 17 00:00:00 2001
From: Aurora <davidone92@katamail.com>
Date: Sun, 18 Sep 2016 20:10:24 +0200
Subject: [PATCH] Support already decrypted N3DS firmware.bins in dev

---
 source/crypto.c | 5 +++++
 source/firm.c   | 4 ++--
 source/fs.c     | 6 +++---
 source/screen.c | 2 +-
 source/types.h  | 2 ++
 5 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/source/crypto.c b/source/crypto.c
index 4a8d297..4ff21a3 100755
--- a/source/crypto.c
+++ b/source/crypto.c
@@ -387,6 +387,11 @@ void decryptExeFs(u8 *inbuf)
 //ARM9Loader replacement
 void arm9Loader(u8 *arm9Section)
 {
+#ifdef DEV
+    //Check if FIRM is already decrypted
+    if(*(u32 *)(arm9Section + 0x800) == 0x47704770) return;
+#endif
+
     //Determine the arm9loader version
     u32 a9lVersion;
     switch(arm9Section[0x53])
diff --git a/source/firm.c b/source/firm.c
index 58dca4b..9c30231 100755
--- a/source/firm.c
+++ b/source/firm.c
@@ -584,11 +584,11 @@ static inline void launchFirm(FirmwareType firmType)
 
     //Determine the ARM11 entry to use
     vu32 *arm11;
-    if(isFirmlaunch) arm11 = (u32 *)0x1FFFFFFC;
+    if(isFirmlaunch) arm11 = (vu32 *)0x1FFFFFFC;
     else
     {
         deinitScreens();
-        arm11 = (u32 *)0x1FFFFFF8;
+        arm11 = (vu32 *)BRAHMA_ARM11_ENTRY;
     }
 
     //Set ARM11 kernel entrypoint
diff --git a/source/fs.c b/source/fs.c
index 83ca4fa..80b9a05 100644
--- a/source/fs.c
+++ b/source/fs.c
@@ -121,7 +121,7 @@ void loadPayload(u32 pressed)
 
     f_closedir(&dir);
 
-    if(result == FR_OK && info.fname[0])
+    if(result == FR_OK && info.fname[0] != 0)
     {
         u32 *loaderAddress = (u32 *)0x24FFFF00;
         u8 *payloadAddress = (u8 *)0x24F00000;
@@ -166,7 +166,7 @@ u32 firmRead(void *dest, u32 firmType)
     u32 firmVersion = 0xFFFFFFFF;
 
     //Parse the target directory
-    while(f_readdir(&dir, &info) == FR_OK && info.fname[0])
+    while(f_readdir(&dir, &info) == FR_OK && info.fname[0] != 0)
     {
         //Not a cxi
         if(info.fname[9] != 'a') continue;
@@ -203,7 +203,7 @@ void findDumpFile(const char *path, char *fileName)
     FILINFO info;
     u32 n = 0;
 
-    while(f_findfirst(&dir, &info, path, fileName) == FR_OK && info.fname[0])
+    while(f_findfirst(&dir, &info, path, fileName) == FR_OK && info.fname[0] != 0)
     {
         u32 i = 18,
             tmp = ++n;
diff --git a/source/screen.c b/source/screen.c
index d0e8358..7a22638 100644
--- a/source/screen.c
+++ b/source/screen.c
@@ -32,7 +32,7 @@
 #include "draw.h"
 #include "i2c.h"
 
-vu32 *const arm11Entry = (vu32 *)0x1FFFFFF8;
+vu32 *const arm11Entry = (vu32 *)BRAHMA_ARM11_ENTRY;
 static const u32 brightness[4] = {0x5F, 0x4C, 0x39, 0x26};
 
 void  __attribute__((naked)) arm11Stub(void)
diff --git a/source/types.h b/source/types.h
index 2434af9..892bef4 100644
--- a/source/types.h
+++ b/source/types.h
@@ -37,6 +37,8 @@ typedef volatile u32 vu32;
 typedef volatile u64 vu64;
 
 //Used by multiple files
+#define BRAHMA_ARM11_ENTRY 0x1FFFFFF8
+
 typedef enum FirmwareSource
 {
     FIRMWARE_SYSNAND = 0,