| commit | d5aa79a7b0ec531b097f1f286f868bf1ad7ce51a | [log] [tgz] |
|---|---|---|
| author | Rupert Swarbrick <rswarbrick@lowrisc.org> | Mon Dec 14 13:04:21 2020 +0000 |
| committer | Rupert Swarbrick <rswarbrick@gmail.com> | Mon Dec 14 16:22:53 2020 +0000 |
| tree | 1ba165dd1bad40dd655c11fccb21cc5b398825dd | |
| parent | 9e10420314861224009ef04c5f1201743fdfa862 [diff] |
[otbn] Allow concurrent runs of otbn_build.py on the same files Because the Meson-based build system doesn't really allow multiple toolchains, we use a hack to build OTBN code through "custom commands". Doing this, in turn, means that we have to assemble and link every assembly file that goes into an ELF in a single script. If two different ELF files use the same assembly file, this means we've got two different runs of the script that are both trying to create the relevant object file at the same time, which causes confusing errors. This patch should fix the errors by assembling the objects to temporary files and then (atomically) renaming them to put them in the right place. Obviously, it would be nice to teach the build system to do this properly, but that looks like it's a bigger job, so we're applying the hacky fix for now. Signed-off-by: Rupert Swarbrick <rswarbrick@lowrisc.org>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
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