| #!/usr/bin/env python3 |
| # Copyright (c) Microsoft Corporation |
| # SPDX-License-Identifier: MIT |
| # Copied from 7a9e1f4 of https://github.com/microsoft/uf2/blob/master/utils/uf2conv.py |
| # pylint: skip-file |
| import sys |
| import struct |
| import subprocess |
| import re |
| import os |
| import os.path |
| import argparse |
| |
| |
| UF2_MAGIC_START0 = 0x0A324655 # "UF2\n" |
| UF2_MAGIC_START1 = 0x9E5D5157 # Randomly selected |
| UF2_MAGIC_END = 0x0AB16F30 # Ditto |
| |
| families = { |
| 'SAMD21': 0x68ed2b88, |
| 'SAML21': 0x1851780a, |
| 'SAMD51': 0x55114460, |
| 'NRF52': 0x1b57745f, |
| 'STM32F0': 0x647824b6, |
| 'STM32F1': 0x5ee21072, |
| 'STM32F2': 0x5d1a0a2e, |
| 'STM32F3': 0x6b846188, |
| 'STM32F4': 0x57755a57, |
| 'STM32F7': 0x53b80f00, |
| 'STM32G0': 0x300f5633, |
| 'STM32G4': 0x4c71240a, |
| 'STM32H7': 0x6db66082, |
| 'STM32L0': 0x202e3a91, |
| 'STM32L1': 0x1e1f432d, |
| 'STM32L4': 0x00ff6919, |
| 'STM32L5': 0x04240bdf, |
| 'STM32WB': 0x70d16653, |
| 'STM32WL': 0x21460ff0, |
| 'ATMEGA32': 0x16573617, |
| 'MIMXRT10XX': 0x4FB2D5BD, |
| 'LPC55': 0x2abc77ec, |
| 'GD32F350': 0x31D228C6, |
| 'ESP32S2': 0xbfdd4eee, |
| 'RP2040': 0xe48bff56 |
| } |
| |
| INFO_FILE = "/INFO_UF2.TXT" |
| |
| appstartaddr = 0x2000 |
| familyid = 0x0 |
| |
| |
| def is_uf2(buf): |
| w = struct.unpack("<II", buf[0:8]) |
| return w[0] == UF2_MAGIC_START0 and w[1] == UF2_MAGIC_START1 |
| |
| def is_hex(buf): |
| try: |
| w = buf[0:30].decode("utf-8") |
| except UnicodeDecodeError: |
| return False |
| if w[0] == ':' and re.match(b"^[:0-9a-fA-F\r\n]+$", buf): |
| return True |
| return False |
| |
| def convert_from_uf2(buf): |
| global appstartaddr |
| numblocks = len(buf) // 512 |
| curraddr = None |
| outp = [] |
| for blockno in range(numblocks): |
| ptr = blockno * 512 |
| block = buf[ptr:ptr + 512] |
| hd = struct.unpack(b"<IIIIIIII", block[0:32]) |
| if hd[0] != UF2_MAGIC_START0 or hd[1] != UF2_MAGIC_START1: |
| print("Skipping block at " + ptr + "; bad magic") |
| continue |
| if hd[2] & 1: |
| # NO-flash flag set; skip block |
| continue |
| datalen = hd[4] |
| if datalen > 476: |
| assert False, "Invalid UF2 data size at " + ptr |
| newaddr = hd[3] |
| if curraddr == None: |
| appstartaddr = newaddr |
| curraddr = newaddr |
| padding = newaddr - curraddr |
| if padding < 0: |
| assert False, "Block out of order at " + ptr |
| if padding > 10*1024*1024: |
| assert False, "More than 10M of padding needed at " + ptr |
| if padding % 4 != 0: |
| assert False, "Non-word padding size at " + ptr |
| while padding > 0: |
| padding -= 4 |
| outp += b"\x00\x00\x00\x00" |
| outp.append(block[32 : 32 + datalen]) |
| curraddr = newaddr + datalen |
| return b"".join(outp) |
| |
| def convert_to_carray(file_content): |
| outp = "const unsigned long bindata_len = %d;\n" % len(file_content) |
| outp += "const unsigned char bindata[] __attribute__((aligned(16))) = {" |
| for i in range(len(file_content)): |
| if i % 16 == 0: |
| outp += "\n" |
| outp += "0x%02x, " % file_content[i] |
| outp += "\n};\n" |
| return bytes(outp, "utf-8") |
| |
| def convert_to_uf2(file_content): |
| global familyid |
| datapadding = b"" |
| while len(datapadding) < 512 - 256 - 32 - 4: |
| datapadding += b"\x00\x00\x00\x00" |
| numblocks = (len(file_content) + 255) // 256 |
| outp = [] |
| for blockno in range(numblocks): |
| ptr = 256 * blockno |
| chunk = file_content[ptr:ptr + 256] |
| flags = 0x0 |
| if familyid: |
| flags |= 0x2000 |
| hd = struct.pack(b"<IIIIIIII", |
| UF2_MAGIC_START0, UF2_MAGIC_START1, |
| flags, ptr + appstartaddr, 256, blockno, numblocks, familyid) |
| while len(chunk) < 256: |
| chunk += b"\x00" |
| block = hd + chunk + datapadding + struct.pack(b"<I", UF2_MAGIC_END) |
| assert len(block) == 512 |
| outp.append(block) |
| return b"".join(outp) |
| |
| class Block: |
| def __init__(self, addr): |
| self.addr = addr |
| self.bytes = bytearray(256) |
| |
| def encode(self, blockno, numblocks): |
| global familyid |
| flags = 0x0 |
| if familyid: |
| flags |= 0x2000 |
| hd = struct.pack("<IIIIIIII", |
| UF2_MAGIC_START0, UF2_MAGIC_START1, |
| flags, self.addr, 256, blockno, numblocks, familyid) |
| hd += self.bytes[0:256] |
| while len(hd) < 512 - 4: |
| hd += b"\x00" |
| hd += struct.pack("<I", UF2_MAGIC_END) |
| return hd |
| |
| def convert_from_hex_to_uf2(buf): |
| global appstartaddr |
| appstartaddr = None |
| upper = 0 |
| currblock = None |
| blocks = [] |
| for line in buf.split('\n'): |
| if line[0] != ":": |
| continue |
| i = 1 |
| rec = [] |
| while i < len(line) - 1: |
| rec.append(int(line[i:i+2], 16)) |
| i += 2 |
| tp = rec[3] |
| if tp == 4: |
| upper = ((rec[4] << 8) | rec[5]) << 16 |
| elif tp == 2: |
| upper = ((rec[4] << 8) | rec[5]) << 4 |
| assert (upper & 0xffff) == 0 |
| elif tp == 1: |
| break |
| elif tp == 0: |
| addr = upper | (rec[1] << 8) | rec[2] |
| if appstartaddr == None: |
| appstartaddr = addr |
| i = 4 |
| while i < len(rec) - 1: |
| if not currblock or currblock.addr & ~0xff != addr & ~0xff: |
| currblock = Block(addr & ~0xff) |
| blocks.append(currblock) |
| currblock.bytes[addr & 0xff] = rec[i] |
| addr += 1 |
| i += 1 |
| numblocks = len(blocks) |
| resfile = b"" |
| for i in range(0, numblocks): |
| resfile += blocks[i].encode(i, numblocks) |
| return resfile |
| |
| def to_str(b): |
| return b.decode("utf-8") |
| |
| def get_drives(): |
| drives = [] |
| if sys.platform == "win32": |
| r = subprocess.check_output(["wmic", "PATH", "Win32_LogicalDisk", |
| "get", "DeviceID,", "VolumeName,", |
| "FileSystem,", "DriveType"]) |
| for line in to_str(r).split('\n'): |
| words = re.split('\s+', line) |
| if len(words) >= 3 and words[1] == "2" and words[2] == "FAT": |
| drives.append(words[0]) |
| else: |
| rootpath = "/media" |
| if sys.platform == "darwin": |
| rootpath = "/Volumes" |
| elif sys.platform == "linux": |
| tmp = rootpath + "/" + os.environ["USER"] |
| if os.path.isdir(tmp): |
| rootpath = tmp |
| for d in os.listdir(rootpath): |
| drives.append(os.path.join(rootpath, d)) |
| |
| |
| def has_info(d): |
| try: |
| return os.path.isfile(d + INFO_FILE) |
| except: |
| return False |
| |
| return list(filter(has_info, drives)) |
| |
| |
| def board_id(path): |
| with open(path + INFO_FILE, mode='r') as file: |
| file_content = file.read() |
| return re.search("Board-ID: ([^\r\n]*)", file_content).group(1) |
| |
| |
| def list_drives(): |
| for d in get_drives(): |
| print(d, board_id(d)) |
| |
| |
| def write_file(name, buf): |
| with open(name, "wb") as f: |
| f.write(buf) |
| print("Wrote %d bytes to %s" % (len(buf), name)) |
| |
| |
| def main(): |
| global appstartaddr, familyid |
| def error(msg): |
| print(msg) |
| sys.exit(1) |
| parser = argparse.ArgumentParser(description='Convert to UF2 or flash directly.') |
| parser.add_argument('input', metavar='INPUT', type=str, nargs='?', |
| help='input file (HEX, BIN or UF2)') |
| parser.add_argument('-b' , '--base', dest='base', type=str, |
| default="0x2000", |
| help='set base address of application for BIN format (default: 0x2000)') |
| parser.add_argument('-o' , '--output', metavar="FILE", dest='output', type=str, |
| help='write output to named file; defaults to "flash.uf2" or "flash.bin" where sensible') |
| parser.add_argument('-d' , '--device', dest="device_path", |
| help='select a device path to flash') |
| parser.add_argument('-l' , '--list', action='store_true', |
| help='list connected devices') |
| parser.add_argument('-c' , '--convert', action='store_true', |
| help='do not flash, just convert') |
| parser.add_argument('-D' , '--deploy', action='store_true', |
| help='just flash, do not convert') |
| parser.add_argument('-f' , '--family', dest='family', type=str, |
| default="0x0", |
| help='specify familyID - number or name (default: 0x0)') |
| parser.add_argument('-C' , '--carray', action='store_true', |
| help='convert binary file to a C array, not UF2') |
| args = parser.parse_args() |
| appstartaddr = int(args.base, 0) |
| |
| if args.family.upper() in families: |
| familyid = families[args.family.upper()] |
| else: |
| try: |
| familyid = int(args.family, 0) |
| except ValueError: |
| error("Family ID needs to be a number or one of: " + ", ".join(families.keys())) |
| |
| if args.list: |
| list_drives() |
| else: |
| if not args.input: |
| error("Need input file") |
| with open(args.input, mode='rb') as f: |
| inpbuf = f.read() |
| from_uf2 = is_uf2(inpbuf) |
| ext = "uf2" |
| if args.deploy: |
| outbuf = inpbuf |
| elif from_uf2: |
| outbuf = convert_from_uf2(inpbuf) |
| ext = "bin" |
| elif is_hex(inpbuf): |
| outbuf = convert_from_hex_to_uf2(inpbuf.decode("utf-8")) |
| elif args.carray: |
| outbuf = convert_to_carray(inpbuf) |
| ext = "h" |
| else: |
| outbuf = convert_to_uf2(inpbuf) |
| print("Converting to %s, output size: %d, start address: 0x%x" % |
| (ext, len(outbuf), appstartaddr)) |
| if args.convert or ext != "uf2": |
| drives = [] |
| if args.output == None: |
| args.output = "flash." + ext |
| else: |
| drives = get_drives() |
| |
| if args.output: |
| write_file(args.output, outbuf) |
| else: |
| if len(drives) == 0: |
| error("No drive to deploy.") |
| for d in drives: |
| print("Flashing %s (%s)" % (d, board_id(d))) |
| write_file(d + "/NEW.UF2", outbuf) |
| |
| |
| if __name__ == "__main__": |
| main() |
