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add tools support for reading bootloader from debug link enabled device (#99)

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This commit is contained in:
mruddy 2017-02-20 08:36:00 -05:00 committed by Pavol Rusnak
parent fe4662d389
commit 71d0c483f8
1 changed files with 17 additions and 2 deletions
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19
tools/mem_read.py
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@ -7,6 +7,14 @@ from trezorlib.transport_hid import HidTransport
import binascii
import sys
# usage examples
# read entire bootloader: ./mem_read.py 8000000 8000
# read initial stack pointer: ./mem_read.py 8000000 4
# an entire bootloader can be later disassembled with:
# arm-none-eabi-objdump -D -b binary -m arm -M force-thumb memory.dat
# note that in order for this to work, your trezor device must
# be running a firmware that was built with debug link enabled
def main():
# List all connected TREZORs on USB
devices = HidTransport.enumerate()
@ -24,9 +32,16 @@ def main():
client = TrezorClient(transport)
debug = DebugLink(debug_transport)
mem = debug.memory_read(int(sys.argv[1],16), int(sys.argv[2],16))
arg1 = int(sys.argv[1], 16)
arg2 = int(sys.argv[2], 16)
step = 0x400 if arg2 >= 0x400 else arg2
f = open('memory.dat', 'w')
f.write(mem)
for addr in range(arg1, arg1 + arg2, step):
mem = debug.memory_read(addr, step)
f.write(mem)
f.close()
client.close()