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tools/uf2conv.py: Update to latest version.

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Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2022-02-02 20:14:05 +11:00
parent feeeb5ea3a
commit 59b6099508
2 changed files with 291 additions and 30 deletions
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129
tools/uf2conv.py Executable file → Normal file
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@@ -33,21 +33,13 @@ import re
import os
import os.path
import argparse
import json
UF2_MAGIC_START0 = 0x0A324655 # "UF2\n"
UF2_MAGIC_START1 = 0x9E5D5157 # Randomly selected
UF2_MAGIC_END = 0x0AB16F30 # Ditto
families = {
"SAMD21": 0x68ED2B88,
"SAMD51": 0x55114460,
"NRF52": 0x1B57745F,
"STM32F1": 0x5EE21072,
"STM32F4": 0x57755A57,
"ATMEGA32": 0x16573617,
}
INFO_FILE = "/INFO_UF2.TXT"
appstartaddr = 0x2000
@@ -71,9 +63,14 @@ def is_hex(buf):
def convert_from_uf2(buf):
global appstartaddr
global familyid
numblocks = len(buf) // 512
curraddr = None
outp = b""
currfamilyid = None
families_found = {}
prev_flag = None
all_flags_same = True
outp = []
for blockno in range(numblocks):
ptr = blockno * 512
block = buf[ptr : ptr + 512]
@@ -88,9 +85,13 @@ def convert_from_uf2(buf):
if datalen > 476:
assert False, "Invalid UF2 data size at " + ptr
newaddr = hd[3]
if curraddr == None:
appstartaddr = newaddr
if (hd[2] & 0x2000) and (currfamilyid == None):
currfamilyid = hd[7]
if curraddr == None or ((hd[2] & 0x2000) and hd[7] != currfamilyid):
currfamilyid = hd[7]
curraddr = newaddr
if familyid == 0x0 or familyid == hd[7]:
appstartaddr = newaddr
padding = newaddr - curraddr
if padding < 0:
assert False, "Block out of order at " + ptr
@@ -101,19 +102,53 @@ def convert_from_uf2(buf):
while padding > 0:
padding -= 4
outp += b"\x00\x00\x00\x00"
outp += block[32 : 32 + datalen]
if familyid == 0x0 or ((hd[2] & 0x2000) and familyid == hd[7]):
outp.append(block[32 : 32 + datalen])
curraddr = newaddr + datalen
return outp
if hd[2] & 0x2000:
if hd[7] in families_found.keys():
if families_found[hd[7]] > newaddr:
families_found[hd[7]] = newaddr
else:
families_found[hd[7]] = newaddr
if prev_flag == None:
prev_flag = hd[2]
if prev_flag != hd[2]:
all_flags_same = False
if blockno == (numblocks - 1):
print("--- UF2 File Header Info ---")
families = load_families()
for family_hex in families_found.keys():
family_short_name = ""
for name, value in families.items():
if value == family_hex:
family_short_name = name
print(
"Family ID is {:s}, hex value is 0x{:08x}".format(
family_short_name, family_hex
)
)
print("Target Address is 0x{:08x}".format(families_found[family_hex]))
if all_flags_same:
print("All block flag values consistent, 0x{:04x}".format(hd[2]))
else:
print("Flags were not all the same")
print("----------------------------")
if len(families_found) > 1 and familyid == 0x0:
outp = []
appstartaddr = 0x0
return b"".join(outp)
def convert_to_carray(file_content):
outp = "const unsigned char bindata[] __attribute__((aligned(16))) = {"
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, " % ord(file_content[i])
outp += "0x%02x, " % file_content[i]
outp += "\n};\n"
return outp
return bytes(outp, "utf-8")
def convert_to_uf2(file_content):
@@ -122,7 +157,7 @@ def convert_to_uf2(file_content):
while len(datapadding) < 512 - 256 - 32 - 4:
datapadding += b"\x00\x00\x00\x00"
numblocks = (len(file_content) + 255) // 256
outp = b""
outp = []
for blockno in range(numblocks):
ptr = 256 * blockno
chunk = file_content[ptr : ptr + 256]
@@ -144,8 +179,8 @@ def convert_to_uf2(file_content):
chunk += b"\x00"
block = hd + chunk + datapadding + struct.pack(b"<I", UF2_MAGIC_END)
assert len(block) == 512
outp += block
return outp
outp.append(block)
return b"".join(outp)
class Block:
@@ -195,11 +230,10 @@ def convert_from_hex_to_uf2(buf):
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]
addr = upper + ((rec[1] << 8) | rec[2])
if appstartaddr == None:
appstartaddr = addr
i = 4
@@ -217,6 +251,10 @@ def convert_from_hex_to_uf2(buf):
return resfile
def to_str(b):
return b.decode("utf-8")
def get_drives():
drives = []
if sys.platform == "win32":
@@ -232,7 +270,7 @@ def get_drives():
"DriveType",
]
)
for line in r.split("\n"):
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])
@@ -270,7 +308,23 @@ def list_drives():
def write_file(name, buf):
with open(name, "wb") as f:
f.write(buf)
print("Wrote %d bytes to %s." % (len(buf), name))
print("Wrote %d bytes to %s" % (len(buf), name))
def load_families():
# The expectation is that the `uf2families.json` file is in the same
# directory as this script. Make a path that works using `__file__`
# which contains the full path to this script.
filename = "uf2families.json"
pathname = os.path.join(os.path.dirname(os.path.abspath(__file__)), filename)
with open(pathname) as f:
raw_families = json.load(f)
families = {}
for family in raw_families:
families[family["short_name"]] = int(family["id"], 0)
return families
def main():
@@ -303,6 +357,7 @@ def main():
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",
@@ -314,9 +369,17 @@ def main():
parser.add_argument(
"-C", "--carray", action="store_true", help="convert binary file to a C array, not UF2"
)
parser.add_argument(
"-i",
"--info",
action="store_true",
help="display header information from UF2, do not convert",
)
args = parser.parse_args()
appstartaddr = int(args.base, 0)
families = load_families()
if args.family.upper() in families:
familyid = families[args.family.upper()]
else:
@@ -334,9 +397,14 @@ def main():
inpbuf = f.read()
from_uf2 = is_uf2(inpbuf)
ext = "uf2"
if from_uf2:
if args.deploy:
outbuf = inpbuf
elif from_uf2 and not args.info:
outbuf = convert_from_uf2(inpbuf)
ext = "bin"
elif from_uf2 and args.info:
outbuf = ""
convert_from_uf2(inpbuf)
elif is_hex(inpbuf):
outbuf = convert_from_hex_to_uf2(inpbuf.decode("utf-8"))
elif args.carray:
@@ -344,11 +412,12 @@ def main():
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:
if not args.deploy and not args.info:
print(
"Converted 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