[U-Boot-Users] Help U-Boot NFS filesystem.

[muqiyong]

> 
> > Uncompressing
> > Linux.............................................................
> > ............. done, booting the kernel.
> > Linux version 2.6.16 (root at second) (gcc version 4.0.0 (DENX ELDK 4.0
4.0.0))
> > #16
> >  Thu Jun 8 03:40:10 AQTT 2006
> > CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)
> > Machine: Atmel AT91RM9200-DK
> > Memory policy: ECC disabled, Data cache writeback
> > Clocks: CPU 179 MHz, master 59 MHz, main 18.432 MHz
> > CPU0: D VIVT write-back cache
> > CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
> > CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
> > Built 1 zonelists
> > Kernel command line: root=/dev/nfs rw nfsroot=${serverip}:${rootpath}
> > ip=${ipadd
> > r}:${serverip}:${gatewayip}:${netmask}:${hostname}::off
> 
> 
> Quite apart from the MAC address issue, you need to fix your kernel
> command line.  The variables in the last line above do not make sense
> to the kernel, it needs to be passed actual IP addresses.
> 
> Note: if you don't know what the IP addresses will be (because they
> are delivered by a DHCP server, for example) you can do this:
> 
> setenv bootcmd setenv bootargs root=/dev/nfs rw
> nfsroot=\${serverip}:\${rootpath} ... \; bootm ...
> 
> Alex
> 
Hi Alex,
	I tried with your way, it's not work.> 
U-Boot> printenv

bootdelay=3
baudrate=115200
serverip=192.168.0.182
ipaddr=192.168.0.66
netmask=255.255.255.0
ethaddr=00:10:ec:00:87:73
rootpath=/opt/eldk_arm/arm
hostname=mqy
gatewayip=192.168.0.182
bootfile=/tftpboot/uImage
bootcmd=bootm 10080000
ok=ok
macaddr=0010ec008773
stdin=serial
stdout=serial
stderr=serial
bootargs=root=/dev/nfs rw nfsroot=192.168.0.182:/opt/eldk_arm/arm
ip=192.168.0.66:192.168.0.182:192.168.0.182:255.255.255.0:mqy::off

Environment size: 433/65532 bytes
U-Boot> bootm

## Booting image at 21000000 ...
   Image Name:   Linux-2.6.16
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1103380 Bytes =  1.1 MB
   Load Address: 20008000
   Entry Point:  20008000
   Verifying Checksum ... OK
OK

Starting kernel ...

Uncompressing
Linux.......................................................................
. done, booting the kernel.

Linux version 2.6.16 (root at second) (gcc version 4.0.0 (DENX ELDK 4.0 4.0.0))
#16 Thu Jun 8 03:40:10 AQTT 2006

CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)

Machine: Atmel AT91RM9200-DK

Memory policy: ECC disabled, Data cache writeback

Clocks: CPU 179 MHz, master 59 MHz, main 18.432 MHz

CPU0: D VIVT write-back cache

CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets

CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets

Built 1 zonelists

Kernel command line: root=/dev/nfs rw
nfsroot=192.168.0.182:/opt/eldk_arm/arm
ip=192.168.0.66:192.168.0.182:192.168.0.182:255.255.255.0:mqy::off

AT91: 128 gpio irqs in 4 banks

PID hash table entries: 256 (order: 8, 4096 bytes)

Console: colour dummy device 80x30

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory: 32MB = 32MB total

Memory: 30044KB available (1844K code, 402K data, 92K init)

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

NET: Registered protocol family 16

usbcore: registered new driver usbfs

usbcore: registered new driver hub

NetWinder Floating Point Emulator V0.97 (double precision)

Initializing Cryptographic API

io scheduler noop registered

io scheduler anticipatory registered (default)

AT91 Real Time Clock driver.

AT91 SPI driver loaded

AT91 Watchdog Timer enabled (5 seconds, nowayout=1)

at91_usart.0: ttyS0 at MMIO 0xfefff200 (irq = 1) is a AT91_SERIAL

at91_usart.1: ttyS1 at MMIO 0xfffc4000 (irq = 7) is a AT91_SERIAL

RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize

at91_ether: Your bootloader did not configure a MAC address.

eth0: Link down.

eth0: AT91 ethernet at 0xfefbc000 int=24 10-HalfDuplex (00:00:00:00:00:00)

eth0: Davicom 9196 PHY (Copper)

physmap flash device: 200000 at 10000000

phys_mapped_flash: Found 1 x16 devices at 0x0 in 16-bit bank

 Amd/Fujitsu Extended Query Table at 0x0041

phys_mapped_flash: CFI does not contain boot bank location. Assuming top.

number of CFI chips: 1

cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.

RedBoot partition parsing not available

at91_cf: irqs det #64, io #0

at91_ohci at91_ohci: AT91 OHCI

at91_ohci at91_ohci: new USB bus registered, assigned bus number 1

at91_ohci at91_ohci: irq 23, io mem 0x00300000

usb usb1: Product: AT91 OHCI

usb usb1: Manufacturer: Linux 2.6.16 ohci_hcd

usb usb1: SerialNumber: at91

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

udc: at91_udc version 8 March 2005

mice: PS/2 mouse device common for all mice

i2c /dev entries driver

at91_i2c at91_i2c: AT91 i2c bus driver.

NET: Registered protocol family 2

IP route cache hash table entries: 512 (order: -1, 2048 bytes)

TCP established hash table entries: 2048 (order: 1, 8192 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

TCP bic registered

NET: Registered protocol family 1

NET: Registered protocol family 17

IP-Config: Failed to open eth0

IP-Config: No network devices available.

Looking up port of RPC 100003/2 on 192.168.0.182

portmap: RPC call returned error 101

Root-NFS: Unable to get nfsd port number from server, using default

Looking up port of RPC 100005/1 on 192.168.0.182

portmap: RPC call returned error 101

Root-NFS: Unable to get mountd port number from server, using default

mount: RPC call returned error 101

Root-NFS: Server returned error -101 while mounting /opt/eldk_arm/arm

VFS: Unable to mount root fs via NFS, trying floppy.

VFS: Cannot open root device "nfs" or unknown-block(2,0)

Please append a correct "root=" boot option

Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(2,0)