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usb_update.py
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#! /usr/bin/env python3
import argparse
import usb.core
import usb.util
import array
import sys
import hashlib
import csv
import urllib.request
import re
from progressbar.bar import ProgressBar
from Crypto.Cipher import AES
from Crypto.Hash import SHA256
from Crypto.Random import get_random_bytes
def bip39_to_bits(phrase):
BIP39_TABLE_EN = [
"abandon", "ability", "able", "about", "above", "absent", "absorb",
"abstract", "absurd", "abuse", "access", "accident", "account",
"accuse", "achieve", "acid", "acoustic", "acquire", "across", "act",
"action", "actor", "actress", "actual", "adapt", "add", "addict",
"address", "adjust", "admit", "adult", "advance", "advice", "aerobic",
"affair", "afford", "afraid", "again", "age", "agent", "agree",
"ahead", "aim", "air", "airport", "aisle", "alarm", "album",
"alcohol", "alert", "alien", "all", "alley", "allow", "almost",
"alone", "alpha", "already", "also", "alter", "always", "amateur",
"amazing", "among", "amount", "amused", "analyst", "anchor",
"ancient", "anger", "angle", "angry", "animal", "ankle", "announce",
"annual", "another", "answer", "antenna", "antique", "anxiety", "any",
"apart", "apology", "appear", "apple", "approve", "april", "arch",
"arctic", "area", "arena", "argue", "arm", "armed", "armor", "army",
"around", "arrange", "arrest", "arrive", "arrow", "art", "artefact",
"artist", "artwork", "ask", "aspect", "assault", "asset", "assist",
"assume", "asthma", "athlete", "atom", "attack", "attend", "attitude",
"attract", "auction", "audit", "august", "aunt", "author", "auto",
"autumn", "average", "avocado", "avoid", "awake", "aware", "away",
"awesome", "awful", "awkward", "axis", "baby", "bachelor", "bacon",
"badge", "bag", "balance", "balcony", "ball", "bamboo", "banana",
"banner", "bar", "barely", "bargain", "barrel", "base", "basic",
"basket", "battle", "beach", "bean", "beauty", "because", "become",
"beef", "before", "begin", "behave", "behind", "believe", "below",
"belt", "bench", "benefit", "best", "betray", "better", "between",
"beyond", "bicycle", "bid", "bike", "bind", "biology", "bird",
"birth", "bitter", "black", "blade", "blame", "blanket", "blast",
"bleak", "bless", "blind", "blood", "blossom", "blouse", "blue",
"blur", "blush", "board", "boat", "body", "boil", "bomb", "bone",
"bonus", "book", "boost", "border", "boring", "borrow", "boss",
"bottom", "bounce", "box", "boy", "bracket", "brain", "brand",
"brass", "brave", "bread", "breeze", "brick", "bridge", "brief",
"bright", "bring", "brisk", "broccoli", "broken", "bronze", "broom",
"brother", "brown", "brush", "bubble", "buddy", "budget", "buffalo",
"build", "bulb", "bulk", "bullet", "bundle", "bunker", "burden",
"burger", "burst", "bus", "business", "busy", "butter", "buyer",
"buzz", "cabbage", "cabin", "cable", "cactus", "cage", "cake", "call",
"calm", "camera", "camp", "can", "canal", "cancel", "candy", "cannon",
"canoe", "canvas", "canyon", "capable", "capital", "captain", "car",
"carbon", "card", "cargo", "carpet", "carry", "cart", "case", "cash",
"casino", "castle", "casual", "cat", "catalog", "catch", "category",
"cattle", "caught", "cause", "caution", "cave", "ceiling", "celery",
"cement", "census", "century", "cereal", "certain", "chair", "chalk",
"champion", "change", "chaos", "chapter", "charge", "chase", "chat",
"cheap", "check", "cheese", "chef", "cherry", "chest", "chicken",
"chief", "child", "chimney", "choice", "choose", "chronic", "chuckle",
"chunk", "churn", "cigar", "cinnamon", "circle", "citizen", "city",
"civil", "claim", "clap", "clarify", "claw", "clay", "clean", "clerk",
"clever", "click", "client", "cliff", "climb", "clinic", "clip",
"clock", "clog", "close", "cloth", "cloud", "clown", "club", "clump",
"cluster", "clutch", "coach", "coast", "coconut", "code", "coffee",
"coil", "coin", "collect", "color", "column", "combine", "come",
"comfort", "comic", "common", "company", "concert", "conduct",
"confirm", "congress", "connect", "consider", "control", "convince",
"cook", "cool", "copper", "copy", "coral", "core", "corn", "correct",
"cost", "cotton", "couch", "country", "couple", "course", "cousin",
"cover", "coyote", "crack", "cradle", "craft", "cram", "crane",
"crash", "crater", "crawl", "crazy", "cream", "credit", "creek",
"crew", "cricket", "crime", "crisp", "critic", "crop", "cross",
"crouch", "crowd", "crucial", "cruel", "cruise", "crumble", "crunch",
"crush", "cry", "crystal", "cube", "culture", "cup", "cupboard",
"curious", "current", "curtain", "curve", "cushion", "custom", "cute",
"cycle", "dad", "damage", "damp", "dance", "danger", "daring", "dash",
"daughter", "dawn", "day", "deal", "debate", "debris", "decade",
"december", "decide", "decline", "decorate", "decrease", "deer",
"defense", "define", "defy", "degree", "delay", "deliver", "demand",
"demise", "denial", "dentist", "deny", "depart", "depend", "deposit",
"depth", "deputy", "derive", "describe", "desert", "design", "desk",
"despair", "destroy", "detail", "detect", "develop", "device",
"devote", "diagram", "dial", "diamond", "diary", "dice", "diesel",
"diet", "differ", "digital", "dignity", "dilemma", "dinner",
"dinosaur", "direct", "dirt", "disagree", "discover", "disease",
"dish", "dismiss", "disorder", "display", "distance", "divert",
"divide", "divorce", "dizzy", "doctor", "document", "dog", "doll",
"dolphin", "domain", "donate", "donkey", "donor", "door", "dose",
"double", "dove", "draft", "dragon", "drama", "drastic", "draw",
"dream", "dress", "drift", "drill", "drink", "drip", "drive", "drop",
"drum", "dry", "duck", "dumb", "dune", "during", "dust", "dutch",
"duty", "dwarf", "dynamic", "eager", "eagle", "early", "earn",
"earth", "easily", "east", "easy", "echo", "ecology", "economy",
"edge", "edit", "educate", "effort", "egg", "eight", "either",
"elbow", "elder", "electric", "elegant", "element", "elephant",
"elevator", "elite", "else", "embark", "embody", "embrace", "emerge",
"emotion", "employ", "empower", "empty", "enable", "enact", "end",
"endless", "endorse", "enemy", "energy", "enforce", "engage",
"engine", "enhance", "enjoy", "enlist", "enough", "enrich", "enroll",
"ensure", "enter", "entire", "entry", "envelope", "episode", "equal",
"equip", "era", "erase", "erode", "erosion", "error", "erupt",
"escape", "essay", "essence", "estate", "eternal", "ethics",
"evidence", "evil", "evoke", "evolve", "exact", "example", "excess",
"exchange", "excite", "exclude", "excuse", "execute", "exercise",
"exhaust", "exhibit", "exile", "exist", "exit", "exotic", "expand",
"expect", "expire", "explain", "expose", "express", "extend", "extra",
"eye", "eyebrow", "fabric", "face", "faculty", "fade", "faint",
"faith", "fall", "false", "fame", "family", "famous", "fan", "fancy",
"fantasy", "farm", "fashion", "fat", "fatal", "father", "fatigue",
"fault", "favorite", "feature", "february", "federal", "fee", "feed",
"feel", "female", "fence", "festival", "fetch", "fever", "few",
"fiber", "fiction", "field", "figure", "file", "film", "filter",
"final", "find", "fine", "finger", "finish", "fire", "firm", "first",
"fiscal", "fish", "fit", "fitness", "fix", "flag", "flame", "flash",
"flat", "flavor", "flee", "flight", "flip", "float", "flock", "floor",
"flower", "fluid", "flush", "fly", "foam", "focus", "fog", "foil",
"fold", "follow", "food", "foot", "force", "forest", "forget", "fork",
"fortune", "forum", "forward", "fossil", "foster", "found", "fox",
"fragile", "frame", "frequent", "fresh", "friend", "fringe", "frog",
"front", "frost", "frown", "frozen", "fruit", "fuel", "fun", "funny",
"furnace", "fury", "future", "gadget", "gain", "galaxy", "gallery",
"game", "gap", "garage", "garbage", "garden", "garlic", "garment",
"gas", "gasp", "gate", "gather", "gauge", "gaze", "general", "genius",
"genre", "gentle", "genuine", "gesture", "ghost", "giant", "gift",
"giggle", "ginger", "giraffe", "girl", "give", "glad", "glance",
"glare", "glass", "glide", "glimpse", "globe", "gloom", "glory",
"glove", "glow", "glue", "goat", "goddess", "gold", "good", "goose",
"gorilla", "gospel", "gossip", "govern", "gown", "grab", "grace",
"grain", "grant", "grape", "grass", "gravity", "great", "green",
"grid", "grief", "grit", "grocery", "group", "grow", "grunt", "guard",
"guess", "guide", "guilt", "guitar", "gun", "gym", "habit", "hair",
"half", "hammer", "hamster", "hand", "happy", "harbor", "hard",
"harsh", "harvest", "hat", "have", "hawk", "hazard", "head", "health",
"heart", "heavy", "hedgehog", "height", "hello", "helmet", "help",
"hen", "hero", "hidden", "high", "hill", "hint", "hip", "hire",
"history", "hobby", "hockey", "hold", "hole", "holiday", "hollow",
"home", "honey", "hood", "hope", "horn", "horror", "horse",
"hospital", "host", "hotel", "hour", "hover", "hub", "huge", "human",
"humble", "humor", "hundred", "hungry", "hunt", "hurdle", "hurry",
"hurt", "husband", "hybrid", "ice", "icon", "idea", "identify",
"idle", "ignore", "ill", "illegal", "illness", "image", "imitate",
"immense", "immune", "impact", "impose", "improve", "impulse", "inch",
"include", "income", "increase", "index", "indicate", "indoor",
"industry", "infant", "inflict", "inform", "inhale", "inherit",
"initial", "inject", "injury", "inmate", "inner", "innocent", "input",
"inquiry", "insane", "insect", "inside", "inspire", "install",
"intact", "interest", "into", "invest", "invite", "involve", "iron",
"island", "isolate", "issue", "item", "ivory", "jacket", "jaguar",
"jar", "jazz", "jealous", "jeans", "jelly", "jewel", "job", "join",
"joke", "journey", "joy", "judge", "juice", "jump", "jungle",
"junior", "junk", "just", "kangaroo", "keen", "keep", "ketchup",
"key", "kick", "kid", "kidney", "kind", "kingdom", "kiss", "kit",
"kitchen", "kite", "kitten", "kiwi", "knee", "knife", "knock", "know",
"lab", "label", "labor", "ladder", "lady", "lake", "lamp", "language",
"laptop", "large", "later", "latin", "laugh", "laundry", "lava",
"law", "lawn", "lawsuit", "layer", "lazy", "leader", "leaf", "learn",
"leave", "lecture", "left", "leg", "legal", "legend", "leisure",
"lemon", "lend", "length", "lens", "leopard", "lesson", "letter",
"level", "liar", "liberty", "library", "license", "life", "lift",
"light", "like", "limb", "limit", "link", "lion", "liquid", "list",
"little", "live", "lizard", "load", "loan", "lobster", "local",
"lock", "logic", "lonely", "long", "loop", "lottery", "loud",
"lounge", "love", "loyal", "lucky", "luggage", "lumber", "lunar",
"lunch", "luxury", "lyrics", "machine", "mad", "magic", "magnet",
"maid", "mail", "main", "major", "make", "mammal", "man", "manage",
"mandate", "mango", "mansion", "manual", "maple", "marble", "march",
"margin", "marine", "market", "marriage", "mask", "mass", "master",
"match", "material", "math", "matrix", "matter", "maximum", "maze",
"meadow", "mean", "measure", "meat", "mechanic", "medal", "media",
"melody", "melt", "member", "memory", "mention", "menu", "mercy",
"merge", "merit", "merry", "mesh", "message", "metal", "method",
"middle", "midnight", "milk", "million", "mimic", "mind", "minimum",
"minor", "minute", "miracle", "mirror", "misery", "miss", "mistake",
"mix", "mixed", "mixture", "mobile", "model", "modify", "mom",
"moment", "monitor", "monkey", "monster", "month", "moon", "moral",
"more", "morning", "mosquito", "mother", "motion", "motor",
"mountain", "mouse", "move", "movie", "much", "muffin", "mule",
"multiply", "muscle", "museum", "mushroom", "music", "must", "mutual",
"myself", "mystery", "myth", "naive", "name", "napkin", "narrow",
"nasty", "nation", "nature", "near", "neck", "need", "negative",
"neglect", "neither", "nephew", "nerve", "nest", "net", "network",
"neutral", "never", "news", "next", "nice", "night", "noble", "noise",
"nominee", "noodle", "normal", "north", "nose", "notable", "note",
"nothing", "notice", "novel", "now", "nuclear", "number", "nurse",
"nut", "oak", "obey", "object", "oblige", "obscure", "observe",
"obtain", "obvious", "occur", "ocean", "october", "odor", "off",
"offer", "office", "often", "oil", "okay", "old", "olive", "olympic",
"omit", "once", "one", "onion", "online", "only", "open", "opera",
"opinion", "oppose", "option", "orange", "orbit", "orchard", "order",
"ordinary", "organ", "orient", "original", "orphan", "ostrich",
"other", "outdoor", "outer", "output", "outside", "oval", "oven",
"over", "own", "owner", "oxygen", "oyster", "ozone", "pact", "paddle",
"page", "pair", "palace", "palm", "panda", "panel", "panic",
"panther", "paper", "parade", "parent", "park", "parrot", "party",
"pass", "patch", "path", "patient", "patrol", "pattern", "pause",
"pave", "payment", "peace", "peanut", "pear", "peasant", "pelican",
"pen", "penalty", "pencil", "people", "pepper", "perfect", "permit",
"person", "pet", "phone", "photo", "phrase", "physical", "piano",
"picnic", "picture", "piece", "pig", "pigeon", "pill", "pilot",
"pink", "pioneer", "pipe", "pistol", "pitch", "pizza", "place",
"planet", "plastic", "plate", "play", "please", "pledge", "pluck",
"plug", "plunge", "poem", "poet", "point", "polar", "pole", "police",
"pond", "pony", "pool", "popular", "portion", "position", "possible",
"post", "potato", "pottery", "poverty", "powder", "power", "practice",
"praise", "predict", "prefer", "prepare", "present", "pretty",
"prevent", "price", "pride", "primary", "print", "priority", "prison",
"private", "prize", "problem", "process", "produce", "profit",
"program", "project", "promote", "proof", "property", "prosper",
"protect", "proud", "provide", "public", "pudding", "pull", "pulp",
"pulse", "pumpkin", "punch", "pupil", "puppy", "purchase", "purity",
"purpose", "purse", "push", "put", "puzzle", "pyramid", "quality",
"quantum", "quarter", "question", "quick", "quit", "quiz", "quote",
"rabbit", "raccoon", "race", "rack", "radar", "radio", "rail", "rain",
"raise", "rally", "ramp", "ranch", "random", "range", "rapid", "rare",
"rate", "rather", "raven", "raw", "razor", "ready", "real", "reason",
"rebel", "rebuild", "recall", "receive", "recipe", "record",
"recycle", "reduce", "reflect", "reform", "refuse", "region",
"regret", "regular", "reject", "relax", "release", "relief", "rely",
"remain", "remember", "remind", "remove", "render", "renew", "rent",
"reopen", "repair", "repeat", "replace", "report", "require",
"rescue", "resemble", "resist", "resource", "response", "result",
"retire", "retreat", "return", "reunion", "reveal", "review",
"reward", "rhythm", "rib", "ribbon", "rice", "rich", "ride", "ridge",
"rifle", "right", "rigid", "ring", "riot", "ripple", "risk", "ritual",
"rival", "river", "road", "roast", "robot", "robust", "rocket",
"romance", "roof", "rookie", "room", "rose", "rotate", "rough",
"round", "route", "royal", "rubber", "rude", "rug", "rule", "run",
"runway", "rural", "sad", "saddle", "sadness", "safe", "sail",
"salad", "salmon", "salon", "salt", "salute", "same", "sample",
"sand", "satisfy", "satoshi", "sauce", "sausage", "save", "say",
"scale", "scan", "scare", "scatter", "scene", "scheme", "school",
"science", "scissors", "scorpion", "scout", "scrap", "screen",
"script", "scrub", "sea", "search", "season", "seat", "second",
"secret", "section", "security", "seed", "seek", "segment", "select",
"sell", "seminar", "senior", "sense", "sentence", "series", "service",
"session", "settle", "setup", "seven", "shadow", "shaft", "shallow",
"share", "shed", "shell", "sheriff", "shield", "shift", "shine",
"ship", "shiver", "shock", "shoe", "shoot", "shop", "short",
"shoulder", "shove", "shrimp", "shrug", "shuffle", "shy", "sibling",
"sick", "side", "siege", "sight", "sign", "silent", "silk", "silly",
"silver", "similar", "simple", "since", "sing", "siren", "sister",
"situate", "six", "size", "skate", "sketch", "ski", "skill", "skin",
"skirt", "skull", "slab", "slam", "sleep", "slender", "slice",
"slide", "slight", "slim", "slogan", "slot", "slow", "slush", "small",
"smart", "smile", "smoke", "smooth", "snack", "snake", "snap",
"sniff", "snow", "soap", "soccer", "social", "sock", "soda", "soft",
"solar", "soldier", "solid", "solution", "solve", "someone", "song",
"soon", "sorry", "sort", "soul", "sound", "soup", "source", "south",
"space", "spare", "spatial", "spawn", "speak", "special", "speed",
"spell", "spend", "sphere", "spice", "spider", "spike", "spin",
"spirit", "split", "spoil", "sponsor", "spoon", "sport", "spot",
"spray", "spread", "spring", "spy", "square", "squeeze", "squirrel",
"stable", "stadium", "staff", "stage", "stairs", "stamp", "stand",
"start", "state", "stay", "steak", "steel", "stem", "step", "stereo",
"stick", "still", "sting", "stock", "stomach", "stone", "stool",
"story", "stove", "strategy", "street", "strike", "strong",
"struggle", "student", "stuff", "stumble", "style", "subject",
"submit", "subway", "success", "such", "sudden", "suffer", "sugar",
"suggest", "suit", "summer", "sun", "sunny", "sunset", "super",
"supply", "supreme", "sure", "surface", "surge", "surprise",
"surround", "survey", "suspect", "sustain", "swallow", "swamp",
"swap", "swarm", "swear", "sweet", "swift", "swim", "swing", "switch",
"sword", "symbol", "symptom", "syrup", "system", "table", "tackle",
"tag", "tail", "talent", "talk", "tank", "tape", "target", "task",
"taste", "tattoo", "taxi", "teach", "team", "tell", "ten", "tenant",
"tennis", "tent", "term", "test", "text", "thank", "that", "theme",
"then", "theory", "there", "they", "thing", "this", "thought",
"three", "thrive", "throw", "thumb", "thunder", "ticket", "tide",
"tiger", "tilt", "timber", "time", "tiny", "tip", "tired", "tissue",
"title", "toast", "tobacco", "today", "toddler", "toe", "together",
"toilet", "token", "tomato", "tomorrow", "tone", "tongue", "tonight",
"tool", "tooth", "top", "topic", "topple", "torch", "tornado",
"tortoise", "toss", "total", "tourist", "toward", "tower", "town",
"toy", "track", "trade", "traffic", "tragic", "train", "transfer",
"trap", "trash", "travel", "tray", "treat", "tree", "trend", "trial",
"tribe", "trick", "trigger", "trim", "trip", "trophy", "trouble",
"truck", "true", "truly", "trumpet", "trust", "truth", "try", "tube",
"tuition", "tumble", "tuna", "tunnel", "turkey", "turn", "turtle",
"twelve", "twenty", "twice", "twin", "twist", "two", "type",
"typical", "ugly", "umbrella", "unable", "unaware", "uncle",
"uncover", "under", "undo", "unfair", "unfold", "unhappy", "uniform",
"unique", "unit", "universe", "unknown", "unlock", "until", "unusual",
"unveil", "update", "upgrade", "uphold", "upon", "upper", "upset",
"urban", "urge", "usage", "use", "used", "useful", "useless", "usual",
"utility", "vacant", "vacuum", "vague", "valid", "valley", "valve",
"van", "vanish", "vapor", "various", "vast", "vault", "vehicle",
"velvet", "vendor", "venture", "venue", "verb", "verify", "version",
"very", "vessel", "veteran", "viable", "vibrant", "vicious",
"victory", "video", "view", "village", "vintage", "violin", "virtual",
"virus", "visa", "visit", "visual", "vital", "vivid", "vocal",
"voice", "void", "volcano", "volume", "vote", "voyage", "wage",
"wagon", "wait", "walk", "wall", "walnut", "want", "warfare", "warm",
"warrior", "wash", "wasp", "waste", "water", "wave", "way", "wealth",
"weapon", "wear", "weasel", "weather", "web", "wedding", "weekend",
"weird", "welcome", "west", "wet", "whale", "what", "wheat", "wheel",
"when", "where", "whip", "whisper", "wide", "width", "wife", "wild",
"will", "win", "window", "wine", "wing", "wink", "winner", "winter",
"wire", "wisdom", "wise", "wish", "witness", "wolf", "woman",
"wonder", "wood", "wool", "word", "work", "world", "worry", "worth",
"wrap", "wreck", "wrestle", "wrist", "write", "wrong", "yard", "year",
"yellow", "you", "young", "youth", "zebra", "zero", "zone", "zoo",
]
wordlist = phrase.rstrip().split()
if len(wordlist) not in [12, 15, 18, 21, 24]:
raise ValueError("BIP-39 phrase has incorrect length")
indices = []
for word in wordlist:
try:
index = BIP39_TABLE_EN.index(word)
except ValueError:
raise ValueError("{} is not a BIP-39 word".format(word))
indices.append(index)
data = bytearray()
bucket = 0
bits_in_bucket = 0
for index in indices:
bucket = (bucket << 11) | index
bits_in_bucket += 11
while bits_in_bucket >= 8:
data.append((bucket >> (bits_in_bucket - 8)) & 0xFF)
mask = 0xFFFF_FFFF ^ (0xFF << (bits_in_bucket - 8))
bucket &= mask
bits_in_bucket -= 8
if bits_in_bucket == 0:
entered_checksum = data[-1]
data = data[:-1]
else:
entered_checksum = bucket
hasher = SHA256.new()
hasher.update(data)
digest = hasher.digest()
checksum_bits = len(data) // 4
checksum = digest[0] >> (8 - checksum_bits)
if checksum == entered_checksum:
return data
else:
raise ValueError("checksum did not match on BIP-39 phrase")
class PrecursorUsb:
def __init__(self, dev):
self.dev = dev
self.RDSR = 0x05
self.RDSCUR = 0x2B
self.RDID = 0x9F
self.WREN = 0x06
self.WRDI = 0x04
self.SE4B = 0x21
self.BE4B = 0xDC
self.PP4B = 0x12
self.registers = {}
self.regions = {}
self.gitrev = ''
def register(self, name):
return int(self.registers[name], 0)
def halt(self):
if 'vexriscv_debug' in self.regions:
self.poke(int(self.regions['vexriscv_debug'][0], 0), 0x00020000)
elif 'reboot_cpu_hold_reset' in self.registers:
self.poke(self.register('reboot_cpu_hold_reset'), 1)
else:
print("Can't find reset CSR. Try updating to the latest version of this program")
def unhalt(self):
if 'vexriscv_debug' in self.regions:
self.poke(int(self.regions['vexriscv_debug'][0], 0), 0x02000000)
elif 'reboot_cpu_hold_reset' in self.registers:
self.poke(self.register('reboot_cpu_hold_reset'), 0)
else:
print("Can't find reset CSR. Try updating to the latest version of this program")
def peek(self, addr, display=False):
_dummy_s = '\x00'.encode('utf-8')
data = array.array('B', _dummy_s * 4)
numread = self.dev.ctrl_transfer(bmRequestType=(0x80 | 0x43), bRequest=0,
wValue=(addr & 0xffff), wIndex=((addr >> 16) & 0xffff),
data_or_wLength=data, timeout=500)
read_data = int.from_bytes(data.tobytes(), byteorder='little', signed=False)
if display == True:
print("0x{:08x}".format(read_data))
return read_data
def poke(self, addr, wdata, check=False, display=False):
if check == True:
_dummy_s = '\x00'.encode('utf-8')
data = array.array('B', _dummy_s * 4)
numread = self.dev.ctrl_transfer(bmRequestType=(0x80 | 0x43), bRequest=0,
wValue=(addr & 0xffff), wIndex=((addr >> 16) & 0xffff),
data_or_wLength=data, timeout=500)
read_data = int.from_bytes(data.tobytes(), byteorder='little', signed=False)
print("before poke: 0x{:08x}".format(read_data))
data = array.array('B', wdata.to_bytes(4, 'little'))
numwritten = self.dev.ctrl_transfer(bmRequestType=(0x00 | 0x43), bRequest=0,
wValue=(addr & 0xffff), wIndex=((addr >> 16) & 0xffff),
data_or_wLength=data, timeout=500)
if check == True:
_dummy_s = '\x00'.encode('utf-8')
data = array.array('B', _dummy_s * 4)
numread = self.dev.ctrl_transfer(bmRequestType=(0x80 | 0x43), bRequest=0,
wValue=(addr & 0xffff), wIndex=((addr >> 16) & 0xffff),
data_or_wLength=data, timeout=500)
read_data = int.from_bytes(data.tobytes(), byteorder='little', signed=False)
print("after poke: 0x{:08x}".format(read_data))
if display == True:
print("wrote 0x{:08x} to 0x{:08x}".format(wdata, addr))
def burst_read(self, addr, len):
_dummy_s = '\x00'.encode('utf-8')
maxlen = 4096
ret = bytearray()
packet_count = len // maxlen
if (len % maxlen) != 0:
packet_count += 1
for pkt_num in range(packet_count):
cur_addr = addr + pkt_num * maxlen
if pkt_num == packet_count - 1:
if len % maxlen != 0:
bufsize = len % maxlen
else:
bufsize = maxlen
else:
bufsize = maxlen
data = array.array('B', _dummy_s * bufsize)
numread = self.dev.ctrl_transfer(bmRequestType=(0x80 | 0x43), bRequest=0,
wValue=(cur_addr & 0xffff), wIndex=((cur_addr >> 16) & 0xffff),
data_or_wLength=data, timeout=500)
if numread != bufsize:
print("Burst read error: {} bytes requested, {} bytes read at 0x{:08x}".format(bufsize, numread, cur_addr))
exit(1)
ret = ret + data
return ret
def burst_write(self, addr, data):
if len(data) == 0:
return
# the actual "addr" doesn't matter for a burst_write, because it's specified
# as an argument to the flash_pp4b command. We lock out access to the base of
# SPINOR because it's part of the gateware, so, we pick a "safe" address to
# write to instead. The page write responder will aggregate any write data
# to anywhere in the SPINOR address range.
writebuf_addr = 0x2098_0000 # the current start address of the kernel, for example
maxlen = 4096
packet_count = len(data) // maxlen
if (len(data) % maxlen) != 0:
packet_count += 1
for pkt_num in range(packet_count):
cur_addr = addr + pkt_num * maxlen
if pkt_num == packet_count - 1:
if len(data) % maxlen != 0:
bufsize = len(data) % maxlen
else:
bufsize = maxlen
else:
bufsize = maxlen
wdata = array.array('B', data[(pkt_num * maxlen):(pkt_num * maxlen) + bufsize])
numwritten = self.dev.ctrl_transfer(bmRequestType=(0x00 | 0x43), bRequest=0,
# note use of writebuf_addr instead of cur_addr -> see comment above about the quirk of write addressing
wValue=(writebuf_addr & 0xffff), wIndex=((writebuf_addr >> 16) & 0xffff),
data_or_wLength=wdata, timeout=500)
if numwritten != bufsize:
print("Burst write error: {} bytes requested, {} bytes written at 0x{:08x}".format(bufsize, numwritten, cur_addr))
exit(1)
def ping_wdt(self):
self.poke(self.register('wdt_watchdog'), 1, display=False)
self.poke(self.register('wdt_watchdog'), 1, display=False)
def spinor_command_value(self, exec=0, lock_reads=0, cmd_code=0, dummy_cycles=0, data_words=0, has_arg=0):
return ((exec & 1) << 1 |
(lock_reads & 1) << 24 |
(cmd_code & 0xff) << 2 |
(dummy_cycles & 0x1f) << 11 |
(data_words & 0xff) << 16 |
(has_arg & 1) << 10
)
def flash_rdsr(self, lock_reads):
self.poke(self.register('spinor_cmd_arg'), 0)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=lock_reads, cmd_code=self.RDSR, dummy_cycles=4, data_words=1, has_arg=1)
)
return self.peek(self.register('spinor_cmd_rbk_data'), display=False)
def flash_rdscur(self):
self.poke(self.register('spinor_cmd_arg'), 0)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.RDSCUR, dummy_cycles=4, data_words=1, has_arg=1)
)
return self.peek(self.register('spinor_cmd_rbk_data'), display=False)
def flash_rdid(self, offset):
self.poke(self.register('spinor_cmd_arg'), 0)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, cmd_code=self.RDID, dummy_cycles=4, data_words=offset, has_arg=1)
)
return self.peek(self.register('spinor_cmd_rbk_data'), display=False)
def flash_wren(self):
self.poke(self.register('spinor_cmd_arg'), 0)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.WREN)
)
def flash_wrdi(self):
self.poke(self.register('spinor_cmd_arg'), 0)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.WRDI)
)
def flash_se4b(self, sector_address):
self.poke(self.register('spinor_cmd_arg'), sector_address)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.SE4B, has_arg=1)
)
def flash_be4b(self, block_address):
self.poke(self.register('spinor_cmd_arg'), block_address)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.BE4B, has_arg=1)
)
def flash_pp4b(self, address, data_bytes):
self.poke(self.register('spinor_cmd_arg'), address)
self.poke(self.register('spinor_command'),
self.spinor_command_value(exec=1, lock_reads=1, cmd_code=self.PP4B, has_arg=1, data_words=(data_bytes//2))
)
def load_csrs(self, fname=None):
LOC_CSRCSV = 0x20277000 # this address shouldn't change because it's how we figure out our version number
# CSR extraction:
# dd if=soc_csr.bin of=csr_data_0.9.6.bin skip=2524 count=32 bs=1024
if fname == None:
csr_data = self.burst_read(LOC_CSRCSV, 0x8000)
else:
with open(fname, "rb") as f:
csr_data = f.read(0x8000)
hasher = hashlib.sha512()
hasher.update(csr_data[:0x7FC0])
digest = hasher.digest()
if digest != csr_data[0x7fc0:]:
print("Could not find a valid csr.csv descriptor on the device, aborting!")
exit(1)
csr_len = int.from_bytes(csr_data[:4], 'little')
csr_extracted = csr_data[4:4+csr_len]
decoded = csr_extracted.decode('utf-8')
# strip comments
stripped = []
for line in decoded.split('\n'):
if line.startswith('#') == False:
stripped.append(line)
# create database
csr_db = csv.reader(stripped)
for row in csr_db:
if len(row) > 1:
if 'csr_register' in row[0]:
self.registers[row[1]] = row[2]
if 'memory_region' in row[0]:
self.regions[row[1]] = [row[2], row[3]]
if 'git_rev' in row[0]:
self.gitrev = row[1]
print("Using SoC {} registers".format(self.gitrev))
def erase_region(self, addr, length):
# ID code check
code = self.flash_rdid(1)
print("ID code bytes 1-2: 0x{:08x}".format(code))
if code != 0x8080c2c2:
print("ID code mismatch")
exit(1)
code = self.flash_rdid(2)
print("ID code bytes 2-3: 0x{:08x}".format(code))
if code != 0x3b3b8080:
print("ID code mismatch")
exit(1)
# block erase
progress = ProgressBar(min_value=0, max_value=length, prefix='Erasing ').start()
erased = 0
while erased < length:
self.ping_wdt()
if (length - erased >= 65536) and ((addr & 0xFFFF) == 0):
blocksize = 65536
else:
blocksize = 4096
while True:
self.flash_wren()
status = self.flash_rdsr(1)
if status & 0x02 != 0:
break
if blocksize == 4096:
self.flash_se4b(addr + erased)
else:
self.flash_be4b(addr + erased)
erased += blocksize
while (self.flash_rdsr(1) & 0x01) != 0:
pass
result = self.flash_rdscur()
if result & 0x60 != 0:
print("E_FAIL/P_FAIL set on erase, programming may fail, but trying anyways...")
if self.flash_rdsr(1) & 0x02 != 0:
self.flash_wrdi()
while (self.flash_rdsr(1) & 0x02) != 0:
pass
if erased < length:
progress.update(erased)
progress.finish()
print("Erase finished")
# addr is relative to the base of FLASH (not absolute)
def flash_program(self, addr, data, verify=True):
flash_region = int(self.regions['spiflash'][0], 0)
flash_len = int(self.regions['spiflash'][1], 0)
if (addr + len(data) > flash_len):
print("Write data out of bounds! Aborting.")
exit(1)
# ID code check
code = self.flash_rdid(1)
print("ID code bytes 1-2: 0x{:08x}".format(code))
if code != 0x8080c2c2:
print("ID code mismatch")
exit(1)
code = self.flash_rdid(2)
print("ID code bytes 2-3: 0x{:08x}".format(code))
if code != 0x3b3b8080:
print("ID code mismatch")
exit(1)
# block erase
progress = ProgressBar(min_value=0, max_value=len(data), prefix='Erasing ').start()
erased = 0
while erased < len(data):
self.ping_wdt()
if (len(data) - erased >= 65536) and ((addr & 0xFFFF) == 0):
blocksize = 65536
else:
blocksize = 4096
while True:
self.flash_wren()
status = self.flash_rdsr(1)
if status & 0x02 != 0:
break
if blocksize == 4096:
self.flash_se4b(addr + erased)
else:
self.flash_be4b(addr + erased)
erased += blocksize
while (self.flash_rdsr(1) & 0x01) != 0:
pass
result = self.flash_rdscur()
if result & 0x60 != 0:
print("E_FAIL/P_FAIL set on erase, programming may fail, but trying anyways...")
if self.flash_rdsr(1) & 0x02 != 0:
self.flash_wrdi()
while (self.flash_rdsr(1) & 0x02) != 0:
pass
if erased < len(data):
progress.update(erased)
progress.finish()
print("Erase finished")
# program
# pad out to the nearest word length
if len(data) % 4 != 0:
data += bytearray([0xff] * (4 - (len(data) % 4)))
written = 0
progress = ProgressBar(min_value=0, max_value=len(data), prefix='Writing ').start()
while written < len(data):
self.ping_wdt()
if len(data) - written > 256:
chunklen = 256
else:
chunklen = len(data) - written
while True:
self.flash_wren()
status = self.flash_rdsr(1)
if status & 0x02 != 0:
break
self.burst_write(self.register('spinor_wdata'), data[written:(written+chunklen)])
self.flash_pp4b(addr + written, chunklen)
written += chunklen
if written < len(data):
progress.update(written)
progress.finish()
print("Write finished")
if self.flash_rdsr(1) & 0x02 != 0:
self.flash_wrdi()
while (self.flash_rdsr(1) & 0x02) != 0:
pass
# dummy reads to clear the "read lock" bit
self.flash_rdsr(0)
# verify
self.ping_wdt()
if verify:
print("Performing readback for verification...")
self.ping_wdt()
rbk_data = self.burst_read(addr + flash_region, len(data))
if rbk_data != data:
errs = 0
err_thresh = 64
for i in range(0, len(rbk_data)):
if rbk_data[i] != data[i]:
if errs < err_thresh:
print("Error at 0x{:x}: {:x}->{:x}".format(i, data[i], rbk_data[i]))
errs += 1
if errs == err_thresh:
print("Too many errors, stopping print...")
print("Errors were found in verification, programming failed")
print("Total byte errors: {}".format(errs))
exit(1)
else:
print("Verification passed.")
else:
print("Skipped verification at user request")
self.ping_wdt()
def bitflip(data_block, bitwidth=32):
if bitwidth == 0:
return data_block
bytewidth = bitwidth // 8
bitswapped = bytearray()
i = 0
while i < len(data_block):
data = int.from_bytes(data_block[i:i+bytewidth], byteorder='big', signed=False)
b = '{:0{width}b}'.format(data, width=bitwidth)
bitswapped.extend(int(b[::-1], 2).to_bytes(bytewidth, byteorder='big'))
i = i + bytewidth
return bytes(bitswapped)
# assumes a, b are the same length eh?
def xor_bytes(a, b):
i = 0
y = bytearray()
while i < len(a):
y.extend((a[i] ^ b[i]).to_bytes(1, byteorder='little'))
i = i + 1
return bytes(y)
def try_key_to_bytes(input):
if len(input.split(' ')) == 24: # 24 words is BIP-39
key_bytes = bip39_to_bits(input)
else:
key_bytes = int(input, 16).to_bytes(32, byteorder='big')
return key_bytes
# binfile should be the input SoC file, already read in as bytes()
# returns the encrypted version of binfile
def encrypt_to_efuse(binfile, key):
print("Encrypting gateware to target-specific key...")
# extract the keys
key_bytes = bytes([0] * 32)
new_key = try_key_to_bytes(key)
new_hmac = get_random_bytes(32)
new_iv = get_random_bytes(16)
# search for structure
# 0x3001_6004 -> specifies the CBC key
# 4 words of CBC IV
# 0x3003_4001 -> ciphertext len
# 1 word of ciphertext len
# then ciphertext
position = 0
iv_pos = 0
while position < len(binfile):
cwd = int.from_bytes(binfile[position:position+4], 'big')
if cwd == 0x3001_6004:
iv_pos = position+4
if cwd == 0x3003_4001:
break
position = position + 1
position = position + 4
ciphertext_len = 4* int.from_bytes(binfile[position:position+4], 'big')
position = position + 4
active_area = binfile[position : position+ciphertext_len]
postamble = binfile[position+ciphertext_len:]
iv_bytes = bitflip(binfile[iv_pos : iv_pos+0x10]) # note that the IV is embedded in the file
cipher = AES.new(key_bytes, AES.MODE_CBC, iv_bytes)
plain_bitstream = cipher.decrypt(bitflip(active_area))
# now construct the output file and its hashes
plaintext = bytearray()
f = bytearray()
# fixed header that sets 66MHz config speed, x1, 1.8V, eFuse target
device_header = [
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xaa, 0x99, 0x55, 0x66, 0x20, 0x00, 0x00, 0x00, 0x30, 0x03, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x0b,
0x30, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x12, 0x20, 0x00, 0x00, 0x00, 0x30, 0x00, 0xc0, 0x01,
0x80, 0x00, 0x00, 0x40, 0x30, 0x00, 0xa0, 0x01, 0x80, 0x00, 0x00, 0x40, 0x30, 0x01, 0xc0, 0x01,
0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x30, 0x01, 0x60, 0x04,
]
for item in device_header: # add the cleartext header
f.extend(bytes([item]))
f.extend(bitflip(new_iv)) # insert the IV
ciphertext_header = [
0x30, 0x03, 0x40, 0x01, 0x00, 0x08, 0x5b, 0x98,
]
for item in ciphertext_header: # add the cleartext length-of-ciphertext field before the ciphertext
f.extend(bytes([item]))
# generate the header and footer hash keys.
header = int(0x6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C6C).to_bytes(32, byteorder='big')
keyed_header = xor_bytes(header, new_hmac)
footer = int(0x3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A3A).to_bytes(32, byteorder='big')
keyed_footer = xor_bytes(footer, new_hmac)
# add the header
plaintext.extend(keyed_header)
plaintext.extend(header)
# insert the bitstream plaintext, skipping the header and the trailing HMAC.
plaintext.extend(plain_bitstream[64:-160])
# compute first HMAC of stream with new HMAC key
h1 = SHA256.new()
k = 0
while k < len(plaintext) - 320: # HMAC does /not/ cover the whole file, it stops 320 bytes short of the end
h1.update(bitflip(plaintext[k:k+16], 32))
k = k + 16
h1_digest = h1.digest()
# add the footer
plaintext.extend(keyed_footer)
plaintext.extend(footer)
plaintext.extend(bytes(32)) # empty spot where hash #1 would be stored
hash_pad = [ # sha-256 padding for the zero'd hash #1, which is in the bitstream and seems necessary for verification
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00,
]
plaintext.extend(hash_pad)
# compute the hash of the hash, presumably to prevent length extension attacks?
h2 = SHA256.new()
h2.update(bitflip(keyed_footer))
h2.update(bitflip(footer))
h2.update(h1_digest)
h2_digest = h2.digest()
# commit the final HMAC to the bitstream plaintext
plaintext.extend(bitflip(h2_digest))
# encrypt the bitstream
newcipher = AES.new(new_key, AES.MODE_CBC, new_iv)
# finally generate the ciphertext block, which encapsulates the HMACs
ciphertext = newcipher.encrypt(bytes(plaintext))
# add ciphertext to the bitstream
f.extend(bitflip(ciphertext))
# add the cleartext postamble to the bitstream. These are a series of NOP commands + all of the csr.csv data & signatures
f.extend(postamble)
print("Encryption success! {} bytes generated.".format(len(f)))
assert len(f) == 2621440, "Encryption length is incorrect; aborting!"
return f
def auto_int(x):
return int(x, 0)
def main():
parser = argparse.ArgumentParser(description="Developer tool for loading local images to a Precursor. Use `precursorupdater` to fetch from a pre-built image.")
parser.add_argument(
"--soc", required=False, help="'Factory Reset' the SoC gateware. Note: this will overwrite any secret keys stored in your device!", type=str, nargs='?', metavar=('SoC gateware file'), const='../precursors/soc_csr.bin'
)
parser.add_argument(
"-s", "--staging", required=False, help="Stage an update to apply", type=str, nargs='?', metavar=('SoC gateware file'), const='../precursors/soc_csr.bin'
)
parser.add_argument(
"-l", "--loader", required=False, help="Loader", type=str, nargs='?', metavar=('loader file'), const='../target/riscv32imac-unknown-xous-elf/release/loader.bin'
)
parser.add_argument(
"--disable-boot", required=False, action='store_true', help="Disable system boot (for use in multi-stage updates)"
)
parser.add_argument(
"--enable-boot-wipe", required=False, action='store_true', help="Re-enable system boot for factory reset. Requires both a loader (-l) and a soc (--soc) spec. Overwrites root keys."
)
parser.add_argument(
"--enable-boot-update", required=False, action='store_true', help="Re-enable system boot for updates. Requires both a loader (-l) and a staging (-s) spec. Stages SOC without overwriting root keys."
)
parser.add_argument(
"-k", "--kernel", required=False, help="Kernel", type=str, nargs='?', metavar=('kernel file'), const='../target/riscv32imac-unknown-xous-elf/release/xous.img'
)
parser.add_argument(
"-e", "--ec", required=False, help="EC gateware", type=str, nargs='?', metavar=('EC gateware package'), const='ec_fw.bin'
)
parser.add_argument(
"-w", "--wf200", required=False, help="WF200 firmware", type=str, nargs='?', metavar=('WF200 firmware package'), const='wf200_fw.bin'
)
parser.add_argument(
"--erase-pddb", help="Erase the PDDB area", action="store_true"
)
parser.add_argument(
"--audiotest", required=False, help="Test audio clip (must be 8kHz WAV)", type=str, nargs='?', metavar=('Test audio clip'), const="testaudio.wav"
)
parser.add_argument(
"--peek", required=False, help="Inspect an address", type=auto_int, metavar=('ADDR')
)
parser.add_argument(
"--poke", required=False, help="Write to an address", type=auto_int, nargs=2, metavar=('ADDR', 'DATA')
)
parser.add_argument(
"--check-poke", required=False, action='store_true', help="Read data before and after the poke"
)
parser.add_argument(
"--config", required=False, help="Print the descriptor", action='store_true'
)
parser.add_argument(
"-i", "--image", required=False, help="Manually specify an image and address. Offset is relative to bottom of flash.", type=str, nargs=2, metavar=('IMAGEFILE', 'ADDR')
)
parser.add_argument(
"--verify", help="Readback verification. May fail for large files due to WDT timeout.", default=False, action='store_true'
)
parser.add_argument(
"--force", help="Ignore gitrev version on SoC and try to burn an image anyways", action="store_true"
)
parser.add_argument(
"--bounce", help="cycle the device through a reset", action="store_true"
)
parser.add_argument(
"--factory-new", help="reset the entire image to mimic exactly what comes out of the factory, including temp files for testing. Warning: this will take a long time.", action="store_true"
)
parser.add_argument(
"--override-csr", required=False, help="CSR file to use instead of CSR values stored with the image. Used to recover in case of partial update of soc_csr.bin", type=str,
)
parser.add_argument(
"--dump", required=False, help="Dump a region of memory. Takes a virtual memory map file as an argument. Looks for lines of format `V|P vaddr paddr`", type=str,
)
parser.add_argument(
"--dump-file", required=False, help="Name out output file for dump. Required if --dump is specified.", type=str,
)
parser.add_argument(
"--key", help="Backup key in hex or BIP-39 format. Used to factory-reset efused devices. Specify BIP-39 phrase within double-quotes.", type=str
)
parser.add_argument(
"--clear-backup", help="Clear backup flag", required=False, action='store_true'