Preparing for mk20dx256vlh7

- Not ready yet
- Will require some more changes to Lib/mk20dx.c

Lib/mk20dx.c

@@ -377,6 +377,27 @@ const uint8_t flashconfigbytes[16] = {
 	0xFF, // EEPROM Protection Byte FEPROT
 	0xFF, // Data Flash Protection Byte FDPROT
 };
+#elif defined(_mk20dx256vlh7_) && defined(_bootloader_)
+// XXX Byte labels may be in incorrect positions, double check before modifying
+//     FSEC is in correct location -Jacob
+__attribute__ ((section(".flashconfig"), used))
+const uint8_t flashconfigbytes[16] = {
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // Backdoor Verif Key 28.3.1
+
+	//
+	// Protecting the first 8k of Flash memory from being over-written while running (bootloader protection)
+	// Still possible to overwrite the bootloader using an external flashing device
+	// For more details see:
+	//  http://cache.freescale.com/files/training/doc/dwf/AMF_ENT_T1031_Boston.pdf (page 8)
+	//  http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4507.pdf
+	//  http://cache.freescale.com/files/32bit/doc/ref_manual/K20P64M72SF1RM.pdf (28.34.6)
+	//
+	0xFF, 0xFF, 0xFF, 0xFE, // Program Flash Protection Bytes FPROT0-3
+
+	0xBE, // Flash security byte FSEC
+	0x03, // Flash nonvolatile option byte FOPT
+	0xFF, // EEPROM Protection Byte FEPROT
+	0xFF, // Data Flash Protection Byte FDPROT
 #endif