Marlin_Firmware/buildroot/share/PlatformIO/scripts/marlin.py
Bob Kuhn ad96c36730 🐛 Fix Lerdge build / encrypt (#24391)
Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
2022-06-24 18:03:19 -05:00

76 lines
2.3 KiB
Python

#
# marlin.py
# Helper module with some commonly-used functions
#
import os,shutil
from SCons.Script import DefaultEnvironment
env = DefaultEnvironment()
from os.path import join
def copytree(src, dst, symlinks=False, ignore=None):
for item in os.listdir(src):
s = join(src, item)
d = join(dst, item)
if os.path.isdir(s):
shutil.copytree(s, d, symlinks, ignore)
else:
shutil.copy2(s, d)
def replace_define(field, value):
for define in env['CPPDEFINES']:
if define[0] == field:
env['CPPDEFINES'].remove(define)
env['CPPDEFINES'].append((field, value))
# Relocate the firmware to a new address, such as "0x08005000"
def relocate_firmware(address):
replace_define("VECT_TAB_ADDR", address)
# Relocate the vector table with a new offset
def relocate_vtab(address):
replace_define("VECT_TAB_OFFSET", address)
# Replace the existing -Wl,-T with the given ldscript path
def custom_ld_script(ldname):
apath = os.path.abspath("buildroot/share/PlatformIO/ldscripts/" + ldname)
for i, flag in enumerate(env["LINKFLAGS"]):
if "-Wl,-T" in flag:
env["LINKFLAGS"][i] = "-Wl,-T" + apath
elif flag == "-T":
env["LINKFLAGS"][i + 1] = apath
# Encrypt ${PROGNAME}.bin and save it with a new name. This applies (mostly) to MKS boards
# This PostAction is set up by offset_and_rename.py for envs with 'build.encrypt_mks'.
def encrypt_mks(source, target, env, new_name):
import sys
key = [0xA3, 0xBD, 0xAD, 0x0D, 0x41, 0x11, 0xBB, 0x8D, 0xDC, 0x80, 0x2D, 0xD0, 0xD2, 0xC4, 0x9B, 0x1E, 0x26, 0xEB, 0xE3, 0x33, 0x4A, 0x15, 0xE4, 0x0A, 0xB3, 0xB1, 0x3C, 0x93, 0xBB, 0xAF, 0xF7, 0x3E]
# If FIRMWARE_BIN is defined by config, override all
mf = env["MARLIN_FEATURES"]
if "FIRMWARE_BIN" in mf: new_name = mf["FIRMWARE_BIN"]
fwpath = target[0].path
fwfile = open(fwpath, "rb")
enfile = open(target[0].dir.path + "/" + new_name, "wb")
length = os.path.getsize(fwpath)
position = 0
try:
while position < length:
byte = fwfile.read(1)
if position >= 320 and position < 31040:
byte = chr(ord(byte) ^ key[position & 31])
if sys.version_info[0] > 2:
byte = bytes(byte, 'latin1')
enfile.write(byte)
position += 1
finally:
fwfile.close()
enfile.close()
os.remove(fwpath)
def add_post_action(action):
env.AddPostAction(join("$BUILD_DIR", "${PROGNAME}.bin"), action);