From e1f3fc75ea8618bfc997f401d64e55eb164d7f99 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Mon, 30 Aug 2021 21:42:35 +0200
Subject: [PATCH] * add TSC shito * fix possible modcrypt shittiness

---
 src/DSi.cpp         | 15 +++++++++++----
 src/DSi_SPI_TSC.cpp |  5 +++++
 src/DSi_SPI_TSC.h   |  3 +++
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/DSi.cpp b/src/DSi.cpp
index 8346a1a8..01e501b6 100644
--- a/src/DSi.cpp
+++ b/src/DSi.cpp
@@ -26,6 +26,7 @@
 #include "GPU.h"
 #include "NDSCart.h"
 #include "SPI.h"
+#include "DSi_SPI_TSC.h"
 #include "Platform.h"
 
 #ifdef JIT_ENABLED
@@ -89,6 +90,9 @@ u8 ITCMInit[0x8000];
 u8 ARM7Init[0x3C00];
 
 
+void Set_SCFG_Clock9(u16 val);
+
+
 bool Init()
 {
 #ifndef JIT_ENABLED
@@ -230,13 +234,14 @@ void DecryptModcryptArea(u32 offset, u32 size, u8* iv)
     // find a matching binary area
 
     u32 binaryaddr, binarysize;
+    u32 roundedsize = (size + 0xF) & ~0xF;
 
     // CHECKME: GBAtek says the modcrypt area should be the same size, or bigger,
     // than the binary area being considered
     // but I have seen modcrypt areas smaller than the ARM9i binary
 #define BINARY_GOOD(name) \
     ((offset >= NDSCart::Header.name##ROMOffset) && \
-     (offset+size) <= (NDSCart::Header.name##ROMOffset+NDSCart::Header.name##Size))
+     (offset+roundedsize) <= (NDSCart::Header.name##ROMOffset + ((NDSCart::Header.name##Size + 0xF) & ~0xF)))
 
     if (BINARY_GOOD(ARM9))
     {
@@ -314,7 +319,8 @@ void SetupDirectBoot()
 
         NDS::MapSharedWRAM(3);
 
-        // TODO: clock speed!
+        DSi_SPI_TSC::SetMode(0x00);
+        Set_SCFG_Clock9(0x0000);
     }
     else
     {
@@ -363,6 +369,9 @@ void SetupDirectBoot()
         MBK[1][8] = mbk[11] & 0x00FFFF0F;
 
         NDS::MapSharedWRAM(mbk[11] >> 24);
+
+        if (!(NDSCart::Header.AppFlags & (1<<0)))
+            DSi_SPI_TSC::SetMode(0x00);
     }
 
     u32 arm9start = 0;
@@ -489,8 +498,6 @@ void SetupDirectBoot()
 
     NDS::ARM7BIOSProt = 0x20;
 
-    // TODO: SCFG setup, permissions, etc
-
     SPI_Firmware::SetupDirectBoot(true);
 }
 
diff --git a/src/DSi_SPI_TSC.cpp b/src/DSi_SPI_TSC.cpp
index 24bbde08..061feb1a 100644
--- a/src/DSi_SPI_TSC.cpp
+++ b/src/DSi_SPI_TSC.cpp
@@ -81,6 +81,11 @@ void DoSavestate(Savestate* file)
     // TODO!!
 }
 
+void SetMode(u8 mode)
+{
+    TSCMode = mode;
+}
+
 void SetTouchCoords(u16 x, u16 y)
 {
     if (TSCMode == 0x00)
diff --git a/src/DSi_SPI_TSC.h b/src/DSi_SPI_TSC.h
index cf3e3173..13b7883e 100644
--- a/src/DSi_SPI_TSC.h
+++ b/src/DSi_SPI_TSC.h
@@ -29,6 +29,9 @@ void DeInit();
 void Reset();
 void DoSavestate(Savestate* file);
 
+// 00=DS-mode 01=normal
+void SetMode(u8 mode);
+
 void SetTouchCoords(u16 x, u16 y);
 void MicInputFrame(s16* data, int samples);