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handle larger firmware

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Peter D. Gray 2025-02-27 11:52:15 -05:00
parent e3ae6bcbdf
commit 481d64d2dd
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1 changed files with 3 additions and 2 deletions
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cli/signit.py
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@ -319,13 +319,14 @@ def doit(keydir, outfn=None, build_dir=None, high_water=False,
pubkey_num=pubkey_num,
timestamp=timestamp(backdate) )
assert FW_MIN_LENGTH <= hdr.firmware_length <= FW_MAX_LENGTH, hdr.firmware_length
if hw_compat & MK_3_OK:
# actual file length limited by size of SPI flash area reserved to txn data/uploads
assert FW_MIN_LENGTH <= hdr.firmware_length <= FW_MAX_LENGTH, hdr.firmware_length
USB_MAX_LEN = (786432-128)
else:
# new value for Mk4: limited only by final binary size, not SPI flash
# new value for Mk4 and later: limited only by final binary size, not SPI flash
assert FW_MIN_LENGTH <= hdr.firmware_length <= FW_MAX_LENGTH_MK4, hdr.firmware_length
USB_MAX_LEN = 1472 * 1024
assert hdr.firmware_length <= USB_MAX_LEN, \