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replace unlzma.c with pure Rust implementation #1

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opened 2020-04-28 19:09:45 +08:00 by sb10q · 2 comments
sb10q commented 2020-04-28 19:09:45 +08:00
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Doesn't need to be LZMA.
There are lots of Rust compression crates but it is difficult to find a good one.
Brotli is not appropriate due to 120KB static dictionary of words that are not applicable to binary data.

Doesn't need to be LZMA. There are lots of Rust compression crates but it is difficult to find a good one. Brotli is not appropriate due to 120KB static dictionary of words that are not applicable to binary data.
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sb10q commented 2020-08-24 09:42:13 +08:00
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LZMA compression is not good enough and the Zynq OCM tends to overflow when Rust performance optimizations are turned on.

LZMA compression is not good enough and the Zynq OCM tends to overflow when Rust performance optimizations are turned on.
sb10q commented 2020-08-24 09:52:42 +08:00
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The other compression algorithms available in the Linux kernel (bz2, inflate, lz4, lzo, xz, zstd) perform the same or worse than lzma on the runtime binary, so I guess we have to abandon the idea of the self-extractible OCM firmware.

The other compression algorithms available in the Linux kernel (bz2, inflate, lz4, lzo, xz, zstd) perform the same or worse than lzma on the runtime binary, so I guess we have to abandon the idea of the self-extractible OCM firmware.
sb10q closed this issue 2020-08-24 09:52:47 +08:00
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Reference: M-Labs/artiq-zynq#1
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