iPXE has an annoying race condition where it sometimes doesn't notice
the ProxyDHCP response when booting, and fails. So we embed a boot
script in the builtin iPXE binaries that implements the retry loop
recommended in the documentation. Empirically, this has resolved
flaky boots on my test machine, usually no more than a single
retry is needed.
This hack tries to interpret the commandline based on what Pixiecore v1
did, before handing off to the fancier v2 CLI logic.
Doesn't support API mode yet, since that's not yet implemented in
the library.
These flags are both for providing binaries when running the apache2
version of pixiecore (which doesn't have builtin ipxe), and for
overriding the builtin version if desired.
The cli package is meant for single-shot execution anyway, so
instead of plumbing everything through reentrantly, let's just
have a global you can seed before calling CLI().
The two binaries (Apache2 and GPL) both invoke the cli package to do
the work, the only difference between them is that the GPL binary passes
it embedded ipxe binaries.
Also introduces a "Trace" member to the API, for the future addition of
extremely verbose and complete tracing, to be used for bug reports. But
for now, only Log is used.
This version is still *extremely* barebones, and the unstable tag
in the README applies triple for it, but the code in its current
state is capable of booting x86 and UEFI clients correctly, and
that was hard enough to merit a snapshot checkpoint.
