74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
#
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# marlin.py
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# Helper module with some commonly-used functions
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#
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import shutil
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from pathlib import Path
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from SCons.Script import DefaultEnvironment
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env = DefaultEnvironment()
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def copytree(src, dst, symlinks=False, ignore=None):
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for item in src.iterdir():
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if item.is_dir():
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shutil.copytree(item, dst / item.name, symlinks, ignore)
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else:
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shutil.copy2(item, dst / item.name)
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def replace_define(field, value):
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envdefs = env['CPPDEFINES'].copy()
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for define in envdefs:
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if define[0] == field:
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env['CPPDEFINES'].remove(define)
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env['CPPDEFINES'].append((field, value))
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# Relocate the firmware to a new address, such as "0x08005000"
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def relocate_firmware(address):
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replace_define("VECT_TAB_ADDR", address)
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# Relocate the vector table with a new offset
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def relocate_vtab(address):
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replace_define("VECT_TAB_OFFSET", address)
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# Replace the existing -Wl,-T with the given ldscript path
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def custom_ld_script(ldname):
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apath = str(Path("buildroot/share/PlatformIO/ldscripts", ldname).resolve())
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for i, flag in enumerate(env["LINKFLAGS"]):
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if "-Wl,-T" in flag:
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env["LINKFLAGS"][i] = "-Wl,-T" + apath
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elif flag == "-T":
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env["LINKFLAGS"][i + 1] = apath
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# Encrypt ${PROGNAME}.bin and save it with a new name. This applies (mostly) to MKS boards
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# This PostAction is set up by offset_and_rename.py for envs with 'build.encrypt_mks'.
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def encrypt_mks(source, target, env, new_name):
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import sys
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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]
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# If FIRMWARE_BIN is defined by config, override all
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mf = env["MARLIN_FEATURES"]
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if "FIRMWARE_BIN" in mf: new_name = mf["FIRMWARE_BIN"]
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fwpath = Path(target[0].path)
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fwfile = fwpath.open("rb")
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enfile = Path(target[0].dir.path, new_name).open("wb")
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length = fwpath.stat().st_size
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position = 0
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try:
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while position < length:
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byte = fwfile.read(1)
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if 320 <= position < 31040:
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byte = chr(ord(byte) ^ key[position & 31])
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if sys.version_info[0] > 2:
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byte = bytes(byte, 'latin1')
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enfile.write(byte)
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position += 1
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finally:
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fwfile.close()
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enfile.close()
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fwpath.unlink()
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def add_post_action(action):
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env.AddPostAction(str(Path("$BUILD_DIR", "${PROGNAME}.bin")), action)
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