I am using TI's davinci board (microprocessor is dm6446) and I both tried community u-boot build and I compiled myself. I try to boot kernel from tftp and fs from nfs but I cannot mount fs. Here is errors:

IP-Config: Got DHCP answer from 0.0.0.0, my address is 192.168.2.50 IP-Config: Complete: device=eth0, addr=192.168.2.50, mask=255.255.255.0, gw=192.168.2.1, host=192.168.2.50, domain=protel.local, nis-domain=(none), bootserver=0.0.0.0, rootserver=0.0.0.0, rootpath= Looking up port of RPC 100003/2 on 0.0.0.0 rpcbind: server 0.0.0.0 not responding, timed out Root-NFS: Unable to get nfsd port number from server, using default Looking up port of RPC 100005/1 on 0.0.0.0 rpcbind: server 0.0.0.0 not responding, timed out Root-NFS: Unable to get mountd port number from server, using default Root-NFS: Server returned error -5 while mounting /tftpboot/ 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; here are the available partitions: 0300 39070080 hda driver: ide-gd Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0) Backtrace: [<c002e5f4>] (dump_backtrace+0x0/0x114) from [<c02c886c>] (dump_stack+0x18/0x1c) r7:00008000 r6:c6012000 r5:c0024808 r4:c03cbd30 [<c02c8854>] (dump_stack+0x0/0x1c) from [<c02c88c4>] (panic+0x54/0x12c) [<c02c8870>] (panic+0x0/0x12c) from [<c0008fbc>] (mount_block_root+0x1e0/0x220) r3:00000001 r2:c6023e98 r1:c6023f60 r0:c034e926 [<c0008ddc>] (mount_block_root+0x0/0x220) from [<c00090c0>] (mount_root+0xc4/0x) r8:00000000 r7:00000000 r6:00000000 r5:00000000 r4:00200000 [<c0008ffc>] (mount_root+0x0/0xfc) from [<c0009268>] (prepare_namespace+0x170/0) r5:c0024808 r4:c03cb820 [<c00090f8>] (prepare_namespace+0x0/0x1c8) from [<c00084bc>] (kernel_init+0xe4/) r5:00000000 r4:c03cb5e0 [<c00083d8>] (kernel_init+0x0/0x118) from [<c0043124>] (do_exit+0x0/0x668) r5:00000000 r4:00000000

My u-boot config is also here:

DaVinci EVM # printenv bootcmd=dhcp;tftpboot 0x82000000 initrd.image;setenv addip setenv bootargs $(bo0 baudrate=115200 ipaddr=192.168.2.50 bootargs=mem=120M console=ttyS0,115200n8 root=/dev/nfs rw nfsroot= 192.168.2.48p rootpath=/home/yildirim/targetfs nfshost=192.168.2.48 serverip=192.168.2.48 bootdelay=10 bootfile=uImage stdin=serial stdout=serial stderr=serial ethaddr=00:0e:99:02:5d:47 videostd=pal

Environment size: 562/16380 bytes

Thank in advance.