75f2c54b42
This is almost a complete rewrite from the old hardware_gen.py. It separates the 'parse DT' stage from the 'generate output' devices more strictly, and is hopefully easier to understand and easier to extend. We also no longer generate the 'devices' list (in YAML) or the dev_p_regs array (in C), as the kernel will implicitly expose all non-RAM untypeds as devices.
23 lines
626 B
Python
23 lines
626 B
Python
#
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# Copyright 2019, Data61
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# Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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# ABN 41 687 119 230.
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#
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# This software may be distributed and modified according to the terms of
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# the GNU General Public License version 2. Note that NO WARRANTY is provided.
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# See "LICENSE_GPLv2.txt" for details.
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#
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# @TAG(DATA61_GPL)
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#
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def align_up(num, bits):
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''' align a number up to a bit-boundary '''
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boundary = 1 << bits
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return (num + (boundary - 1)) & ~(boundary - 1)
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def align_down(num, bits):
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''' align a number down to a bit-boundary '''
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boundary = 1 << bits
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return num & ~(boundary - 1)
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