58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
# Merges bootloader and application into 1 file for ST Solo
|
|
#
|
|
# Patches settings in flash so bootloader will boot application.
|
|
|
|
from intelhex import IntelHex
|
|
import sys
|
|
from binascii import unhexlify
|
|
|
|
if len(sys.argv) < 3:
|
|
print('usage: %s <file1.hex> <file2.hex> [...] [-s <secret_attestation_key>] <output.hex>')
|
|
sys.exit(1)
|
|
|
|
def flash_addr(num):
|
|
return 0x08000000 + num * 2048
|
|
|
|
args = sys.argv[:]
|
|
|
|
# generic / hacker attestation key
|
|
secret_attestation_key = "cd67aa310d091ed16e7e9892aa070e1994fcd714ae7c408fb946b72e5fe75d30"
|
|
|
|
# user supplied, optional
|
|
for i,x in enumerate(args):
|
|
if x == '-s':
|
|
secret_attestation_key = args[i+1]
|
|
break
|
|
|
|
if secret_attestation_key is not None:
|
|
args = args[:i] + args[i+2:]
|
|
|
|
# TODO put definitions somewhere else
|
|
PAGES = 128
|
|
APPLICATION_END_PAGE = PAGES - 19
|
|
AUTH_WORD_ADDR = (flash_addr(APPLICATION_END_PAGE)-8)
|
|
ATTEST_ADDR = (flash_addr(PAGES - 15))
|
|
|
|
first = IntelHex(args[1])
|
|
for i in range(2, len(args)-1):
|
|
first.merge(IntelHex( args[i] ), overlap = 'replace')
|
|
|
|
first[AUTH_WORD_ADDR] = 0
|
|
first[AUTH_WORD_ADDR+1] = 0
|
|
first[AUTH_WORD_ADDR+2] = 0
|
|
first[AUTH_WORD_ADDR+3] = 0
|
|
|
|
first[AUTH_WORD_ADDR+4] = 0xff
|
|
first[AUTH_WORD_ADDR+5] = 0xff
|
|
first[AUTH_WORD_ADDR+6] = 0xff
|
|
first[AUTH_WORD_ADDR+7] = 0xff
|
|
|
|
if secret_attestation_key is not None:
|
|
key = unhexlify(secret_attestation_key)
|
|
print('using key ',key)
|
|
for i,x in enumerate(key):
|
|
print(hex(ATTEST_ADDR + i))
|
|
first[ATTEST_ADDR + i] = x
|
|
|
|
first.tofile(args[len(args)-1], format='hex')
|