Date: Tue, 22 Sep 2015 08:45:29 +0300 From: Daniel Braniss <danny@cs.huji.ac.il> To: Randy Westlund <rwestlun@gmail.com> Cc: freebsd-arm@freebsd.org Subject: Re: NFS Root with Raspberry Pi (nfs_diskless: no interface) Message-ID: <00C49FEB-E8EF-4469-85E2-0F901215CD11@cs.huji.ac.il> In-Reply-To: <20150922052522.GA62140@gmail.com> References: <20150922052522.GA62140@gmail.com>
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> On 22 Sep 2015, at 08:25, Randy Westlund <rwestlun@gmail.com> wrote: >=20 > I'm trying to boot a Raspberry Pi over the network so I can avoid SD > card woes, but I'm stuck on something. >=20 > I've taken the FreeBSD RPI-B image and moved the files to an NFS share > on a server. Its fstab references the NFS root, but all other files = are > unchanged. >=20 > Thus far, I have the pi loading U-Boot from the SD card and grabbing > ubldr via TFTP. Then ubldr successfully connects to the NFS share and > loads the kernel. >=20 > My problem is when the kernel tries to mount root. I'm getting this > error: >=20 >> usbus0: 480Mbps High Speed USB v2.0 >> bcm2835_cpufreq0: ARM 700MHz, Core 250MHz, SDRAM 400MHz, Turbo OFF >> 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 = 41.6MHz/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> on 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 >=20 > I believe "nfs_diskless: no interface" is the important part. The > ethernet port is not ready by the time it tries to mount root. >=20 > The pi uses ethernet over USB and FreeBSD calls the interface ue0. = When > I boot from the SD card, ethernet works without loading any modules, = so > I believe the kernel should have everything it needs. >=20 > What am I doing wrong? >=20 > Randy make sure the ue driver is either compiled in or loaded, you can add if_ue_load=3D=E2=80=9CYES=E2=80=9D to /boot/loader.conf danny
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