FreeBSD/amd64 on machine without ACPI BIOS?

[Gary Jennejohn]

On Fri, 9 Dec 2011 14:10:18 +0400
Lev Serebryakov <lev at FreeBSD.org> wrote:

> Hello, Freebsd-current.
> 
>   Soekris ("famous" developer of small x86-compatible appliance-like
> hardware) released net6501 some time ago, which is based on Atom (E6xx)
> CPU.
>   It seems, that 64-bit version of Linux could run on it without
> problems.
>   But FreeBSD/amd64 can not. It stops after kernel detect some
> devices without any errors or panics.
>   This box has one big difference from billions other Intel-based
> boxes on market: it has very special BIOS without ACPI at all. Someone
> says, that it could be reason why FreeBSD/amd64 could not be boot on
> this box.
>  Is it true? Is it possible to have FreeBSD/amd64 without ACPI?
> 

Have you disabled device acpi in the kernel configuration and made sure
that there is no acpi module installed?

AFAICT there's /sys/amd64/legacy.c which appears to provide support for
systems without ACPI.

-- 
Gary Jennejohn