46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
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from binascii import hexlify, unhexlify
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from time import ctime
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from .tls import tls
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from .usb import usb
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from .sensor import reboot, write_hw_reg32, read_hw_reg32, identify_sensor
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from .flash import flush_changes, read_flash, erase_flash, write_flash_all, write_fw_signature, get_fw_info
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from .util import assert_status
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def upload_fwext():
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# no idea what this is:
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write_hw_reg32(0x8000205c, 7)
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if read_hw_reg32(0x80002080) != 2:
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raise Exception('Unexpected register value')
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dev=identify_sensor()
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print('Sensor: %s' % dev.name)
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# ^ TODO -- what is the real reason to detect HW at this stage?
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# just a guess: perhaps it is used to construct fwext filename
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with open('6_07f_lenovo_mis.xpfwext', 'rb') as f:
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fwext=f.read()
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fwext=fwext[fwext.index(b'\x1a')+1:]
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fwext, signature = fwext[:-0x100], fwext[-0x100:]
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# get fwext header info
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rsp=tls.cmd(unhexlify('4302')) # should fail 'cause no fwext uploaded yet
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fwi=get_fw_info(2)
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if fwi != None:
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raise Exception('FW is already present (version %d.%d (%s))' % (fwi.major, fwi.minor, ctime(fwi.buildtime)))
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#flush_changes()
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write_flash_all(2, 0, fwext)
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write_fw_signature(2, signature)
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fwi=get_fw_info(2)
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if fwi == None:
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raise Exception('No firmware detected')
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print('Loaded FWExt version %d.%d (%s), %d modules' % (fwi.major, fwi.minor, ctime(fwi.buildtime), len(fwi.modules)))
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# Reboot
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reboot()
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