NFS on ARM/IXP435

[Alex Vinogradovs]

Sam Leffler wrote:
>
> I've had no problems using nfs-root, cf-root, or mounting nfs 
> filesystems after boot.  The only thing to beware is to not use NPE-A 
> as it doesn't work.
>
>    Sam
>

Yeah, my situation is kind of odd... I've got operational network, but 
whether it is during startup
(via fstab), or manually later on, mount_nfs just hangs, while / is 
mounted via NFS by kernel. But
since there is no proc/truss, I'm clueless how to see what is it doing...

Indeed I've noticed I've only got one interface out of two, so you've 
answered my question ahead of time :D

just in case, here are my boot messages:

KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2009 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 8.0-CURRENT #6: Fri Jan 30 13:47:27 PST 2009
    alexv at alexv:/usr/src.2/sys/arm/compile/flex100
CPU: IXP435 rev 1 (ARMv5TE) (XScale core)
  DC enabled IC enabled WB enabled LABT branch prediction enabled
  32KB/32B 32-way Instruction cache
  32KB/32B 32-way write-back-locking Data cache
real memory  = 134217728 (128 MB)
avail memory = 125263872 (119 MB)
ixp0: <Intel IXP4XX> on motherboard
ixp0: 37fff<RCOMP,USB,HASH,AES,DES,HDLC,AAL,HSS,UTOPIA,ETH0,ETH1,PCI>
ixpclk0: <IXP4XX Timer> on ixp0
ixpiic0: <IXP4XX GPIO-Based I2C Interface> on ixp0
iicbb0: <I2C bit-banging driver> on ixpiic0
iicbus0: <Philips I2C bus> on iicbb0 master-only
iic0: <I2C generic I/O> on iicbus0
iicbus0: <unknown card> at addr 0x5a
ad74180: <Analog Devices AD7418 ADC> at addr 0x50 on iicbus0
ds16720: <Dallas Semiconductor DS1672 RTC> at addr 0xd0 on iicbus0
ixpwdog0: <IXP4XX Watchdog Timer> on ixp0
uart0: <Non-standard ns8250 class UART with FIFOs> on ixp0
uart0: [FILTER]
uart0: console (115200,n,8,1)
ixpqmgr0: <IXP4XX Q-Manager> on ixp0
ixpqmgr0: [ITHREAD]
ixpqmgr0: [ITHREAD]
npe0: <IXP NPE-C> on ixp0
npe0: [ITHREAD]
npe0: MAC at 0xc800a000
npe0: MII at 0xc800a000
npe0: load fw image IXP425.NPE-C Func 0x5 Rev 2.1
miibus0: <MII bus> on npe0
ukphy0: <Generic IEEE 802.3u media interface> PHY 1 on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
npe0: Ethernet address: 00:03:47:df:32:a8
ata_avila0: <Gateworks Cambria IDE/CF Controller> on ixp0
ata_avila0: [ITHREAD]
ata0: <ATA channel 0> on ata_avila0
ata0: [ITHREAD]
ehci0: <IXP4XX Integrated USB 2.0 controller> on ixp0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb0: set host controller mode
usb0: set big-endian mode
usb0: EHCI version 1.0
usb0: stop timeout
usb0: set host controller mode
usb0: set big-endian mode
usb0 on ehci0
usb0: USB revision 2.0
uhub0: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb0
uhub0: 1 port with 1 removable, self powered
ehci1: <IXP4XX Integrated USB 2.0 controller> on ixp0
ehci1: [GIANT-LOCKED]
ehci1: [ITHREAD]
usb1: set host controller mode
usb1: set big-endian mode
usb1: EHCI version 1.0
usb1: stop timeout
usb1: set host controller mode
usb1: set big-endian mode
usb1 on ehci1
usb1: USB revision 2.0
uhub1: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb1
uhub1: 1 port with 1 removable, self powered
ixpclk0: [FILTER]
Timecounter "IXP4XX Timer" frequency 66666600 Hz quality 1000
Timecounters tick every 10.000 msec
bootpc_init: wired to interface 'npe0'
Sending DHCP Discover packet from interface npe0 (00:03:47:df:32:a8)
Received DHCP Offer packet on npe0 from 10.1.16.109 (accepted) (no root 
path)
Received DHCP Offer packet on npe0 from 10.1.8.100 via 10.1.16.2 
(ignored) (no root path)
Received DHCP Offer packet on npe0 from 10.1.8.100 via 10.1.16.3 
(ignored) (no root path)
Sending DHCP Request packet from interface npe0 (00:03:47:df:32:a8)
Received DHCP Ack packet on npe0 from 10.1.16.109 (accepted) (got root path)
npe0 at 10.1.16.114 server 10.1.16.109 boot file /tftpboot/flex100
subnet mask 255.255.255.0 router 10.1.16.1 rootfs 10.1.16.109:/armroot 
hostname flex100
Adjusted interface npe0
Trying to mount root from nfs:
NFS ROOT: 10.1.16.109:/armroot

10.1.16.109:/armroot on / (nfs, read-only)
devfs on /dev (devfs, local)
/dev/md0 on /var (ufs, local)
/dev/md1 on /tmp (ufs, local)

npe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
    ether 00:03:47:df:32:a8
    inet 10.1.16.114 netmask 0xffffff00 broadcast 10.1.16.255
    media: Ethernet autoselect (100baseTX <full-duplex>)
    status: active