Gary Jennejohn wrote:
u-boot is unfortuately extremely Linux-centric. I work closely with the
person who "invented" u-boot, Wolfgang Denk, and know that he'd just love
to see the *BSD support improved.
Unfortunately, u-boot makes heavy use of Linux' support for rootdev, etc.,
which AFAIK is missing in FreeBSD. It heavily depends on passing lots of
necessary information in the Linux command line to influence the boot
process.
Hi Gary,
we have working patches for U-Boot that extend 'bootm' to recognize and
handle parsing FreeBSD/powerpc ELF image and passing control to it;
among others these compose FreeBSD-style metadata, the goal is aldo to
convert some U-Boot env vars to FreeBSD kenv equivalents etc. but it's
not fully supported yet.
On a related note - we are having a discussion on freebsd-ppc list
towards setting the common convention for registers' usage etc. so we
can handle booting PowerPC kernel from different bootloaders (it's
strictly OF/Mac oriented now).
Once this is agreed and prototyped/tested the changes will by
contributed to U-Boot (I'm sure, too, Wolfgang will be glad to see those;)
kind regards,
Rafal
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