Awesome!  Thanks Geoff!

On Tue, Nov 17, 2009 at 1:37 PM, <geoff@plan9.bell-labs.com> wrote:

> If you run replica/pull (or have done so recently), you'll find a new
> kernel subtree, /sys/src/9/kw, which contains a basic port of Plan 9
> to the Sheevaplug, derived from the port of native Inferno.  9plug is
> a diskless cpu server supporting a serial console and gigabit
> ethernet.  booting(8) and /sys/doc/port.* have been updated to match.
> `kw' stands for Kirkwood, the Marvell system-on-a-chip that the
> Sheevaplug is based upon.  There are more Kirkwood systems on the way.
>
> What's not yet in this port: access to flash memory, USB devices,
> memory cards and possibly more.  The documentation for Kirkwood flash
> and USB is some combination of vague, obscure, incomplete,
> unavailable, contradictory and tediously voluminous.  If you configure
> in the USB drivers, you'll find that there appears to be an
> unpopulated root hub, but that may be a figment of the usb driver's
> imagination.  The EHCI registers do seem to be present and we probably
> just need to tweak some undocumented register to make it all go.
>
> If you only been building 386 binaries to date, you'll want to edit
> /sys/src/mkfile.proto to at least include the arm architecture:
>
>        OS=58
>        CPUS=arm 386
>
> and make sure all your /386/bin compiler binaries are up to date:
>
>        cd /sys/src/cmd
>        for(i in ?c)
>                if(! ~ $i cc rc) @{
>                        cd $i
>                        mk clean
>                        objtype=$cputype mk install
>                        mk clean
>                }
>
> and populate your /arm tree:
>
>        cd /sys/src
>        objtype=arm mk install
>
> You should then be able to build a sheeva kernel:
>
>        cd /sys/src/9/kw
>        mk 'CONF=plug' install  # `mk install' will work too
>
> This should create /arm/9plug; see booting(8) to get started.
>
> Enjoy!
>
>