Reintroduce LPC4088 and Teensy3.1 post build hooks

Author: rwalton-arm

tools/targets/__init__.py

@@ -470,6 +470,7 @@ def lpc_patch(t_self, resources, elf, binf):
         t_self.notify.debug("LPC Patch: %s" % os.path.split(binf)[1])
         patch(binf)
 
+
 class MTSCode(object):
     """Generic MTS code"""
     @staticmethod
@@ -505,6 +506,53 @@ def combine_bins_mts_dragonfly(t_self, resources, elf, binf):
         MTSCode._combine_bins_helper("MTS_DRAGONFLY_F411RE", binf)
 
 
+class LPC4088Code(object):
+    """Code specific to the LPC4088"""
+    @staticmethod
+    def binary_hook(t_self, resources, elf, binf):
+        """Hook to be run after an elf file is built"""
+        if not os.path.isdir(binf):
+            # Regular binary file, nothing to do
+            LPCTargetCode.lpc_patch(t_self, resources, elf, binf)
+            return
+        outbin = open(binf + ".temp", "wb")
+        partf = open(os.path.join(binf, "ER_IROM1"), "rb")
+        # Pad the fist part (internal flash) with 0xFF to 512k
+        data = partf.read()
+        outbin.write(data)
+        outbin.write(b'\xFF' * (512*1024 - len(data)))
+        partf.close()
+        # Read and append the second part (external flash) in chunks of fixed
+        # size
+        chunksize = 128 * 1024
+        partf = open(os.path.join(binf, "ER_IROM2"), "rb")
+        while True:
+            data = partf.read(chunksize)
+            outbin.write(data)
+            if len(data) < chunksize:
+                break
+        partf.close()
+        outbin.close()
+        # Remove the directory with the binary parts and rename the temporary
+        # file to 'binf'
+        shutil.rmtree(binf, True)
+        os.rename(binf + '.temp', binf)
+        t_self.notify.debug(
+            "Generated custom binary file (internal flash + SPIFI)"
+        )
+        LPCTargetCode.lpc_patch(t_self, resources, elf, binf)
+
+
+class TEENSY3_1Code(object):
+    """Hooks for the TEENSY3.1"""
+    @staticmethod
+    def binary_hook(t_self, resources, elf, binf):
+        """Hook that is run after elf is generated"""
+        # This function is referenced by old versions of targets.json and
+        # should be kept for backwards compatibility.
+        pass
+
+
 class MCU_NRF51Code(object):
     """NRF51 Hooks"""
     @staticmethod