ABI documentation on refspecs.linuxfoundation.org

Hello,

Not sure where to ask so maybe somebody here knows. Is
https://refspecs.linuxfoundation.org still maintained as the de facto
platform documents archive? It's rather out of date but still about the
best collection for those, at least that I am aware of.

Assuming so, there are a few docs that I'd like to request mirrored as
they are either in danger of going away, or the version on refspecs is
rather outdated:

* The most recent (to my knowledge) ABI for 32-bit PowerPC
  https://example61560.wordpress.com/wp-content/uploads/2016/11/powerpc_abi.pdf.
  Source is still around at <https://github.com/ryanarn/powerabi> but
  isn't trivial to build. refspecs does have a version of this but it is
  from 1994.
* The PPC64 ELFv2 spec
  https://openpower.foundation/specifications/64bitelfabi/ (ELFv1 is
  already on refspecs)
* Various MIPS ABI docs
  https://web.archive.org/web/20180823071624/https://www.linux-mips.org/pub/linux/mips/doc/ABI/
* C-SKY ABI https://github.com/c-sky/csky-doc/tree/master
* The 2002 sysz spec could be updated to
  https://ibm.github.io/s390x-abi/lzsabi_s390x.pdf

Would also be nice if https://refspecs.linuxfoundation.org/elf/ and
https://refspecs.linuxfoundation.org/ELF/ could be merged rather than
having case-sensitive links. A root index would be useful too.

Thanks,
Trevor