f762708822
According to MediaTek's proprietary PI_IMG parser, two cookies (one header and one footer) are expected. Therefore, add a script to perform validity check of the PI_IMG firmware, so that format errors could be caught in build time. Change-Id: I27011492c7fab747aa3ee12d514d20a6a52d0a4d Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/87226 Reviewed-by: Yidi Lin <yidilin@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
35 lines
821 B
Python
Executable file
35 lines
821 B
Python
Executable file
#!/usr/bin/env python3
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#
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# SPDX-License-Identifier: GPL-2.0-only
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import argparse
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HEADER_OFFSET = 0x200
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COOKIE = 0x17C3A6B4
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def check_pi_img(pi_img):
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cookie_count = 0
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with open(pi_img, "rb") as f:
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f.seek(HEADER_OFFSET)
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while True:
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data = f.read(4)
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if not data:
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break
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value = int.from_bytes(data, byteorder="little", signed=False)
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if value == COOKIE:
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cookie_count += 1
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if cookie_count != 2:
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raise ValueError("Invalid PI_IMG {} (expected 2 cookies; found {})"
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.format(pi_img, cookie_count))
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument("pi_img")
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args = parser.parse_args()
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check_pi_img(args.pi_img)
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if __name__ == '__main__':
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main()
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