[U-Boot] can u-boot NFS mount my beaglebone rootfs over USB tether?

[Robert P. J. Day]

On Sun, 21 Jul 2013, Albert ARIBAUD wrote:

> Hi Robert,
>
> On Sun, 21 Jul 2013 04:07:17 -0700 (PDT), "Robert P. J. Day"
> <rpjday at crashcourse.ca> wrote:
>
> >
> >   i have a current production version of the beaglebone black, and i'd
> > dearly love to NFS mount the root filesystem over the USB tether
> > (which typically assigns net addresses of 192.68.7.[12] to the
> > host/board).
> >
> >   does u-boot support that? i just found this elinux article:
> >
> > http://elinux.org/Mount_BeagleBoard_Root_Filesystem_over_NFS_via_USB
> >
> > and am about to start poring over it, but if someone already knows if
> > it can be done (or not), that would be great. thanks.
>
> If the kernel (and possibly initrd, for modules) is available locally,
> then the whole NFS and USB tether rootfs mounting is a Linux thing, not
> a U-boot one, isn't it?

 hmmmmmm ... now that i'm more awake, you may be right. i guess all i
need is for RNDIS to kick in and assign the IP addresses to each end
of the connection before any attempt is made to mount the root
filesystem. for some reason, i thought it had to be done earlier.

  i'll give it a shot, thanks.

rday

p.s. just to be clear, when the BBB is up and running, the only
active network interface is:

usb0      Link encap:Ethernet  HWaddr EA:60:E8:F4:F4:BD
          inet addr:192.168.7.2  Bcast:192.168.7.3  Mask:255.255.255.252
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:40 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:9579 (9.3 KiB)  TX bytes:7401 (7.2 KiB)

so you're suggesting that this requires no further tweaking of u-boot
other than setting "nfsroot="?

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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