mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-28 00:58:09 +00:00
61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
import io
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import sys
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from pathlib import Path
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from trezorlib._internal import firmware_headers
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from trezorlib.firmware.core import FirmwareHeader, HeaderType
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INFILE = Path(sys.argv[1])
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DATA = INFILE.read_bytes()
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READER = io.BytesIO(DATA)
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# boardloader is first 3 16kB sectors
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BOARDLOADER = READER.read(3 * 16 * 1024)
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# following 16kB is unused
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UNUSED = READER.read(16 * 1024)
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if all(b == 0 for b in UNUSED):
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print("Unused space is all zero")
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elif all(b == 0xFF for b in UNUSED):
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print("Unused space is all 0xFF")
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else:
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print("WARNING: Unused space is noise!!")
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# following 64kB is storage area 1, should be empty
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STORAGE1 = READER.read(64 * 1024)
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if all(b == 0 for b in STORAGE1):
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print("Storage area 1 is all zero")
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elif all(b == 0xFF for b in STORAGE1):
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print("Storage area 1 is all 0xFF")
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else:
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print("WARNING: Storage area 1 is noise!!")
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# following 128 kB is bootloader
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BOOTLOADER_SECTOR = READER.read(128 * 1024)
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BOOTLOADER_HEADER = FirmwareHeader.parse(BOOTLOADER_SECTOR)
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assert BOOTLOADER_HEADER.magic == HeaderType.BOOTLOADER
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length = BOOTLOADER_HEADER.header_len + BOOTLOADER_HEADER.code_length
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BOOTLOADER = BOOTLOADER_SECTOR[:length]
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BOOTLOADER_AFTER = BOOTLOADER_SECTOR[length:]
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BOOTLOADER_PARSED = firmware_headers.parse_image(BOOTLOADER)
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print("Bootloader parses OK:")
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print(BOOTLOADER_PARSED.format())
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if all(b == 0 for b in BOOTLOADER_AFTER):
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print("Bootloader padding is all zero")
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elif all(b == 0xFF for b in BOOTLOADER_AFTER):
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print("Bootloader padding is all 0xFF")
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else:
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print("WARNING: Bootloader padding is noise!!")
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# rest of the image is prodtest
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PRODTEST = READER.read()
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PRODTEST_PARSED = firmware_headers.parse_image(PRODTEST)
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print("Prodtest parses OK:")
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print(PRODTEST_PARSED.format())
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# save results:
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Path("boardloader.bin").write_bytes(BOARDLOADER)
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Path("bootloader.bin").write_bytes(BOOTLOADER)
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Path("prodtest.bin").write_bytes(PRODTEST)
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