Date: Sun, 7 Jul 2013 22:43:42 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Douglas Beattie <beattidp@ieee.org> Cc: freebsd-arm@freebsd.org Subject: Re: NFS root on BeagleBone Black Message-ID: <20130708054342.GB26412@funkthat.com> In-Reply-To: <0D94186F-F592-44C4-9F76-9E4B4B487468@ieee.org> References: <0D94186F-F592-44C4-9F76-9E4B4B487468@ieee.org>
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Douglas Beattie wrote this message on Sun, Jul 07, 2013 at 23:06 -0600:
> Working with the BeagleBone Black, I'm hoping to achieve boot to NFS root.
> Thinking I'm fairly far along, I'm stuck with an 'error 19' at the final steps of
> booting the kernel. Here's a little background -- any hints would be appreciated.
>
> On FreeBSD 9.1, I have a TFTP server, plus an NFS export on the same folder;
> here are a few snippets from the console, which confirm this.
>
> [bsd03: /root/oss/crochet-freebsd]# tail -n2 /etc/inetd.conf
> tftp dgram udp wait root /usr/libexec/tftpd tftpd -l -s /opt/tftpboot
> tftp dgram udp6 wait root /usr/libexec/tftpd tftpd -l -s /opt/tftpboot
> [bsd03: /root/oss/crochet-freebsd]# cat /etc/exports
> /opt/tftpboot -maproot=0 -alldirs -network 192.168.0.0 -mask 255.255.255.0
> [bsd03: /root/oss/crochet-freebsd]# showmount -e
> Exports list on localhost:
> /opt/tftpboot 192.168.0.0
>
> I have built (using the excellent crochet facility) and can boot FreeBSD from
> the microSD card, and I have verified that I can NFS mount the exported folder.
>
> Then, I created a custom kernel configuration, BEAGLEBONENFSROOT, with
> just a couple changes, as follows:
>
> options NFS_ROOT #NFS usable as /, requires NFSCL
> options ROOTDEVNAME=\"nfs:192.168.0.198:/opt/tftpboot/beaglebone\"
Do you have:
options BOOTP
in your kernel to give the interface an ip address? I don't see
anything in your dmesg about the kernel trying to get an ip address
before it tries to nfs mount root.
There isn't any communication from U-Boot to the kernel on what the ip
address is suppose to be... The kernel needs to rediscover it itself.
Hope this helps.
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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