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https://github.com/Atmosphere-NX/Atmosphere.git
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45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
#!/usr/bin/env python
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import sys, os
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from struct import pack as pk, unpack as up
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def align_up(val, algn):
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val += algn - 1
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return val - (val % algn)
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def main(argc, argv):
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if argc != 1:
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print('Usage: %s' % argv[0])
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return 1
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with open('kernel_ldr/kernel_ldr.bin', 'rb') as f:
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kernel_ldr = f.read()
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with open('kernel/kernel.bin', 'rb') as f:
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kernel = f.read()
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kernel_metadata_offset = 4
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assert (kernel_metadata_offset <= len(kernel) - 0x40)
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assert (kernel[kernel_metadata_offset:kernel_metadata_offset + 4] == b'MSS0')
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kernel_end = up('<I', kernel[kernel_metadata_offset + 0x34:kernel_metadata_offset + 0x38])[0]
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assert (kernel_end >= len(kernel))
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embedded_ini = b''
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embedded_ini_offset = align_up(kernel_end, 0x1000) + 0x1000
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embedded_ini_end = embedded_ini_offset + 0 # TODO: Create and embed an INI, eventually.
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kernel_ldr_offset = align_up(embedded_ini_end, 0x1000) + 0x1000
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kernel_ldr_end = kernel_ldr_offset + len(kernel_ldr)
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with open('mesosphere.bin', 'wb') as f:
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f.write(kernel[:kernel_metadata_offset + 4])
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f.write(pk('<QQ', embedded_ini_offset, kernel_ldr_offset))
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f.write(kernel[kernel_metadata_offset + 0x14:])
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f.seek(embedded_ini_offset)
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f.write(embedded_ini)
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f.seek(embedded_ini_end)
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f.seek(kernel_ldr_offset)
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f.write(kernel_ldr)
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f.seek(kernel_ldr_end)
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return 0
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if __name__ == '__main__':
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sys.exit(main(len(sys.argv), sys.argv))
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