Date: Wed, 23 Sep 2015 13:44:45 -0400 From: Randy Westlund <rwestlun@gmail.com> To: Daniel Braniss <danny@cs.huji.ac.il> Cc: freebsd-arm@freebsd.org Subject: Re: NFS Root with Raspberry Pi (nfs_diskless: no interface) Message-ID: <20150923174445.GE43653@gmail.com> In-Reply-To: <91AAC64E-4C38-47AA-8910-48F7654A7524@cs.huji.ac.il> References: <20150922052522.GA62140@gmail.com> <00C49FEB-E8EF-4469-85E2-0F901215CD11@cs.huji.ac.il> <20150923050414.GB43653@gmail.com> <91AAC64E-4C38-47AA-8910-48F7654A7524@cs.huji.ac.il>
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On Wed, Sep 23, 2015 at 11:54:43AM +0300, Daniel Braniss wrote:
> ok, thought it was too easy. Can you send me more info so that i can repr=
oduce it here?
> specially the ubldr stuff?
>=20
> ah! try if_smsc_load=3DYES
>=20
> danny
Okay, that's definitely the correct driver. Looks like the pi uses a
SMSC LAN9514 ethernet module. But I see the same output regardless of
whether that's in loader.conf or not. The kernel seems to be finding
smsc0 just fine. It just hasn't created the interface yet.
> ugen0.1: <DWCOTG> at usbus0
> uhub0: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
> mmcsd0: 4GB <SDHC SU04G 8.0 SN 001FC92A MFG 12/2011 by 3 SD> at mmc0 41.6=
MHz/4bit/65535-block
> nfs_diskless: no interface
> Root mount waiting for: usbus0
> uhub0: 1 port with 1 removable, self powered
> ugen0.2: <vendor 0x0424> at usbus0
> uhub1: <vendor 0x0424 product 0x9512, class 9/0, rev 2.00/2.00, addr 2> o=
n usbus0
> uhub1: MTT enabled
> Root mount waiting for: usbus0
> uhub1: 3 ports with 2 removable, self powered
> Root mount waiting for: usbus0
> ugen0.3: <vendor 0x0424> at usbus0
> smsc0: <vendor 0x0424 product 0xec00, rev 2.00/2.00, addr 3> on usbus0
> Trying to mount root from nfs:192.168.1.254:/usr/raspi_root [rw]...
> nfs_diskless: no interface
> Mounting from nfs:192.168.1.254:/usr/raspi_root failed with error -1.
>=20
> Loader variables:
> vfs.root.mountfrom=3Dnfs:192.168.1.254:/usr/raspi_root
> vfs.root.mountfrom.options=3Drw
Here's the fstab that the pi is using:
> cat /usr/raspi_root/etc/fstab
> 192.168.1.254:/usr/raspi_root / nfs rw 0 0
Here's dhcp.conf on my router:
> $ cat /etc/dhcpd.conf
> authoritative;
> option domain-name-servers 192.168.1.1;
>=20
> subnet 192.168.1.0 netmask 255.255.255.0 {
> option routers 192.168.1.1;
> range 192.168.1.2 192.168.1.150;
> next-server 192.168.1.254;
> option root-path "/usr/raspi_root";
> }
Here's what ubldr sees before it loads the kernel over NFS:
> loader> show
> LINES=3D24
> autoboot_delay=3D10
> boot.netif.gateway=3D0.0.0.0
> boot.netif.hwaddr=3Db8:27:eb:28:a4:f8
> boot.netif.ip=3D192.168.1.33
> boot.netif.netmask=3D255.255.255.0
> boot.nfsroot.nfshandle=3DX298684cadeaf78ee0a000400000000006ed938000000000=
000000000X
> boot.nfsroot.nfshandlelen=3D28
> boot.nfsroot.path=3D/usr/raspi_root
> boot.nfsroot.server=3D192.168.1.254
> bootfile=3Dkernel
> console=3Duboot
> currdev=3Dnet0:
> interpret=3DOK
> kernel=3Dkernel
> kernelname=3D/boot/kernel/kernel
> loaddev=3Dnet0:
> loader_conf_files=3D/boot/loader.conf /boot/loader.conf.local
> module_path=3D/boot/kernel;/boot/kernel;/boot/modules;/boot/dtb
> prompt=3Dloader>
> twiddle_divisor=3D1
The files I'm using are all taken from one of these two images (same
result with both):
FreeBSD-11.0-CURRENT-arm-armv6-RPI-B-20150826-r287169.img
FreeBSD-10.2-STABLE-arm-armv6-RPI-B-20150917-r287929.img
Let me know if you need any other info, and thanks for spending time on
this.
Randy
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