fusee_cpp: cache cleanup, confirmed working on hardware

fusee_cpp/program/source/fusee_main.cpp

@@ -44,6 +44,7 @@ namespace ams::nxboot {
                 *reinterpret_cast<volatile u32 *>(0x4003800C) = static_cast<u32>(sm);
                 *reinterpret_cast<volatile u32 *>(0x40038010) = static_cast<u32>(bw);
             }
+
             *reinterpret_cast<volatile u32 *>(0x7000E400) = 0x10;
         }
 

fusee_cpp/program/source/fusee_secure_initialize.cpp

@@ -328,6 +328,10 @@ namespace ams::nxboot {
         clkrst::EnableI2c5Clock();
         clkrst::EnableTzramClock();
 
+        /* Ensure avp cache is enabled, since we'll be using it. */
+        clkrst::EnableCache2Clock();
+        clkrst::EnableCram2Clock();
+
         /* Initialize I2C5. */
         i2c::Initialize(i2c::Port_5);