Re: An old problem ...about linux mount rootfs with nfs

In message <1124852294.11078.8.camel@banana> you wrote:

    I used u-boot-1.1.3 and 2.4.25 linux on my custom MPC852T board, I
can't mount /opt/eldk/ppc_8xx as rootfs.

You pass incomplete config options to the kernel.

Hit any key to stop autoboot:  0
=> setenv hostname banana
=> setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) ip=
$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off
=> printenv
bootcmd=bootm 40040000 40100000
bootdelay=3
baudrate=115200
loads_echo=1
ethprime=SCC ETHERNET
ipaddr=10.0.14.110
serverip=10.0.14.26
netmask=255.255.0.0
preboot=echo;
netdev=eth0

^^^^^^^^^^^^^

nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath)
ramargs=setenv bootargs root=/dev/ram rw
addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):
$(netmask):$(hostname):$(netdev):off panic=1

                         ^^^^^^^^^

Here you have all the necessary prparations.

bootargs=root=/dev/nfs rw nfsroot=10.0.14.26:/opt/eldk/ppc_8xx
ip=10.0.14.110:10.0.14.26::255.255.0.0:banana::off

                                               ^^

But here you are missing to pass the information which ethernet interface to use.

Kernel command line: root=/dev/nfs rw
nfsroot=10.0.14.26:/opt/eldk/ppc_8xx
ip=10.0.14.110:10.0.14.26::255.255.0.0:banana::off

-----------------------------------------------^^^

No interface selected.

eth0: CPM ENET Version 0.2 on SCC4, 00:01:02:b4:36:56
eth1: FEC ENET Version 0.3, FEC irq 9, MII irq 12, addr
00:01:02:b4:36:57

But there are two intefaces. Which one should the kernel use?

Just fix your bootargs.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
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