Add a hacky workaround for problematic carts

This adds a few strategically placed dummy commands which skip the bad
responses, allowing the cart to be dumped.

source/gamecart/protocol.c

@@ -189,3 +189,10 @@ void Cart_Secure_Init(u32 *buf, u32 *out)
         ioDelay(0xF0000);
     }
 }
+
+void Cart_Dummy(void) {
+    // Sends a dummy command to skip encrypted responses some problematic carts send.
+    u32 test;
+    const u32 A2_cmd[4] = { 0xA2000000, 0x00000000, rand1, rand2 };
+    CTR_SendCommand(A2_cmd, 4, 1, 0x100822C, &test);
+}

source/gamecart/protocol.h

@@ -22,3 +22,4 @@ void Cart_Init(void);
 int Cart_IsInserted(void);
 u32 Cart_GetID(void);
 void Cart_Secure_Init(u32* buf, u32* out);
+void Cart_Dummy(void);

source/main.c

@@ -66,6 +66,7 @@ restart_program:
     u32 blocks = 1 * 1024 * 1024 / mediaUnit; //1MB of blocks
 
     // Read out the header 0x0000-0x1000
+    Cart_Dummy();
     CTR_CmdReadData(0, mediaUnit, 0x1000 / mediaUnit, target);
 
     u32 NCSD_magic = *(u32*)(&target[0x100]);
@@ -105,6 +106,8 @@ restart_program:
 
         u8* read_ptr = target;
         while (read_ptr < target + target_buf_size && current_sector < cartSize) {
+            Cart_Dummy();
+            Cart_Dummy();
             CTR_CmdReadData(current_sector, mediaUnit, blocks, read_ptr);
             read_ptr += mediaUnit * blocks;
             current_sector += blocks;