mirror of
https://github.com/Evolution-X-Devices/device_xiaomi_rosemary
synced 2026-01-27 13:35:09 +00:00
eb5043a68f
- rosemary's LK appears to be checking for certs added to dtbo during signing. We unfortunately do not have the private keys needed to generate an image that the bootloader would accept. - dd out the 2 der certs and append them appropriately with some padding to make the bootloader happy. (Extracted from MIUI 12 dtbo.img) Change-Id: I26402236bcea3516fb98f5d48857106ae30b54c1 Signed-off-by: Kshitij Gupta <kshitijgm@gmail.com>
43 lines
1.3 KiB
Python
Executable File
43 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python
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import argparse
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from os import stat
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def padding_file(input_file, align_num):
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"""Fill 0 to make input_file's size a multiple of align_num."""
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filesize = stat(input_file).st_size
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file1 = open(input_file, 'ab+')
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padding = filesize % align_num
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if padding != 0:
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padding = align_num - padding
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for _ in range(padding):
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file1.write("\x00")
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file1.close()
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def append_file(img_file, cert_file, alignment):
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"""Append provided cert_file to the end of target img_file."""
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padding_file(img_file, alignment)
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file1 = open(img_file, 'ab+')
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file2 = open(cert_file, 'rb')
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file1.write(file2.read())
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file1.close()
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file2.close()
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def main():
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parser = argparse.ArgumentParser(description='Sign an image with provided der certs')
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parser.add_argument('--alignment', type=int, help='Alignment for calculating padding')
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parser.add_argument('--cert1', type=str, help='Certificate - cert1.der')
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parser.add_argument('--cert2', type=str, help='Certificate - cert2.der')
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parser.add_argument('--dtbo', type=str, help='Path to the DTBO img')
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args = parser.parse_args()
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append_file(args.dtbo, args.cert1, args.alignment)
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append_file(args.dtbo, args.cert2, args.alignment)
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if __name__ == '__main__':
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main()
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