93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
# (c) Copyright 2018 by Coinkite Inc. This file is part of Coldcard <coldcardwallet.com>
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# and is covered by GPLv3 license found in COPYING.
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#
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# version.py - Get lots of different version numbers from stuff.
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#
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# REMINDER: update simulator version of this file if API changes are made.
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#
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def get_mpy_version():
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# read my own file header
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# see stm32/bootloader/sigheader.h
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from sigheader import FLASH_HEADER_BASE, FW_HEADER_SIZE, FWH_PY_FORMAT
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import ustruct, uctypes
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try:
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# located in flash, but could also use RAM version
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hdr = uctypes.bytes_at(FLASH_HEADER_BASE, FW_HEADER_SIZE)
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magic_value, timestamp, version_string = ustruct.unpack_from(FWH_PY_FORMAT, hdr)[0:3]
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parts = ['%02x'%i for i in timestamp]
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date = '20' + '-'.join(parts[0:3])
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vers = bytes(version_string).rstrip(b'\0').decode()
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return date, vers, ''.join(parts[:-2])
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except:
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# this is early in boot process, so don't fail!
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return '20YY-MM-DD', '?.??', '180731121314'
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def get_header_value(fld_name):
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# get a single value, raw, from header; based on field name
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from sigheader import FLASH_HEADER_BASE, FW_HEADER_SIZE, FWH_PY_FORMAT, FWH_PY_VALUES
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import ustruct, uctypes
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idx = FWH_PY_VALUES.split().index(fld_name)
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hdr = uctypes.bytes_at(FLASH_HEADER_BASE, FW_HEADER_SIZE)
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return ustruct.unpack_from(FWH_PY_FORMAT, hdr)[idx]
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def is_devmode():
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# what firmware signing key did we boot with? are we in dev mode?
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from sigheader import RAM_HEADER_BASE, FWH_PK_NUM_OFFSET
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import stm
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# Important? Use the RAM version of this, not flash version!
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kn = stm.mem32[RAM_HEADER_BASE + FWH_PK_NUM_OFFSET]
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# For now, all keys are "production" except number zero, which will be made public
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# - some other keys may be de-authorized and so on in the future
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is_devmode = (kn == 0)
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return is_devmode
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# Boot loader needs to tell us stuff about how we were booted, sometimes:
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# - did we just install a new version, for example
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# - are we running in "factory mode" with flash un-secured?
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def is_factory_mode():
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from sigheader import RAM_BOOT_FLAGS, RBF_FACTORY_MODE
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import stm, callgate
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is_factory = bool(stm.mem32[RAM_BOOT_FLAGS] & RBF_FACTORY_MODE)
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bn = callgate.get_bag_number()
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if bn:
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# XXX until we master RDP=2, we need this workaround
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is_factory = False
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return is_factory
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def is_fresh_version():
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from sigheader import RAM_BOOT_FLAGS, RBF_FRESH_VERSION
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import stm
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flags = stm.mem32[RAM_BOOT_FLAGS]
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return bool(flags & RBF_FRESH_VERSION)
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def serial_number():
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# Our USB serial number, both in DFU mode (system boot ROM), and later thanks to code in
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# USBD_StrDescriptor()
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#
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# - this is **completely** public info, since we can be booted into DFU mode by any anybody
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#
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import machine
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i = machine.unique_id()
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return "%02X%02X%02X%02X%02X%02X" % (i[11], i[10] + i[2], i[9], i[8] + i[0], i[7], i[6])
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# EOF
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