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authorPaul Selkirk <paul@psgd.org>2016-07-12 22:48:53 -0400
committerPaul Selkirk <paul@psgd.org>2016-07-12 22:48:53 -0400
commitd1012863307128061c4285a144c84ae736f3edeb (patch)
tree9139fc73af9fe5dc50845d9487600a18ec9a9248 /cryptech/libhal.py
parent20d94fd816ad1755086501547aaffdda7916235a (diff)
Make probe_cores deal with an unconfigured FPGA (and come back later).
See, reading from an unconfigured FPGA returns all-1, while reading from empty cores on a configured FPGA returns all-0. The consequence of this is that the HSM was probing the FPGA once on startup, filling its core table with 0xff, rendering the FPGA useless. Along the way, I put the FPGA core table in static memory, rather than malloc'ing it, because that's not so good in an embedded environment. But I kept the linked list, because that at least tells us what to do if HAL_STATIC_CORE_STATE_BLOCKS is 0.
Diffstat (limited to 'cryptech/libhal.py')
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