From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001
From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:54:23 +0500
Subject: Initial commit

---
 buildroot/share/PlatformIO/scripts/mks_robin.py | 39 +++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 buildroot/share/PlatformIO/scripts/mks_robin.py

(limited to 'buildroot/share/PlatformIO/scripts/mks_robin.py')

diff --git a/buildroot/share/PlatformIO/scripts/mks_robin.py b/buildroot/share/PlatformIO/scripts/mks_robin.py
new file mode 100644
index 0000000..dd2342b
--- /dev/null
+++ b/buildroot/share/PlatformIO/scripts/mks_robin.py
@@ -0,0 +1,39 @@
+import os
+Import("env")
+
+# Relocate firmware from 0x08000000 to 0x08007000
+for define in env['CPPDEFINES']:
+    if define[0] == "VECT_TAB_ADDR":
+        env['CPPDEFINES'].remove(define)
+env['CPPDEFINES'].append(("VECT_TAB_ADDR", "0x08007000"))
+
+custom_ld_script = os.path.abspath("buildroot/share/PlatformIO/ldscripts/mks_robin.ld")
+for i, flag in enumerate(env["LINKFLAGS"]):
+    if "-Wl,-T" in flag:
+        env["LINKFLAGS"][i] = "-Wl,-T" + custom_ld_script
+    elif flag == "-T":
+        env["LINKFLAGS"][i + 1] = custom_ld_script
+
+# Encrypt ${PROGNAME}.bin and save it as 'Robin.bin'
+def encrypt(source, target, env):
+    import sys
+
+    key = [0xA3, 0xBD, 0xAD, 0x0D, 0x41, 0x11, 0xBB, 0x8D, 0xDC, 0x80, 0x2D, 0xD0, 0xD2, 0xC4, 0x9B, 0x1E, 0x26, 0xEB, 0xE3, 0x33, 0x4A, 0x15, 0xE4, 0x0A, 0xB3, 0xB1, 0x3C, 0x93, 0xBB, 0xAF, 0xF7, 0x3E]
+
+    firmware = open(target[0].path, "rb")
+    robin = open(target[0].dir.path +'/Robin.bin', "wb")
+    length = os.path.getsize(target[0].path)
+    position = 0
+    try:
+        while position < length:
+            byte = firmware.read(1)
+            if position >= 320 and position < 31040:
+                byte = chr(ord(byte) ^ key[position & 31])
+                if sys.version_info[0] > 2:
+                    byte = bytes(byte, 'latin1')
+            robin.write(byte)
+            position += 1
+    finally:
+        firmware.close()
+        robin.close()
+env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", encrypt);
-- 
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