• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 3878 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

problem with mounting root fs via NFS

Amy Lu
Prodigy 20 points

Hello,

I am trying to boot my DM365 EVM board over the network for the first time, and the following error appears:

-----------------------

RAMDISK: Couldn't find valid RAM disk image starting at 0.
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "/mtdblock4" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partitions:
1f00           15360 mtdblock0 (driver?)
1f01            1024 mtdblock1 (driver?)
1f02            4096 mtdblock2 (driver?)
1f03          524288 mtdblock3 (driver?)
1f04         1552384 mtdblock4 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

-----------------------

For reference, I've pasted my environment variables here:

-----------------------

ethaddr=00:0e:99:02:c9:19
bootdelay=4
baudrate=115200
bootfile=uImage-dm365-evm.bin
serverip=192.168.1.142
bootcmd=dhcp;tftpboot;bootm
bootargs=mem=116M console=ttyS0,115200n8 root=/mtdblock4 rw initrd=0x82000000,4M ip=off
stdin=serial
stdout=serial
stderr=serial
ver=U-Boot 1.3.4 (May 22 2009 - 11:25:39)

Environment size: 306/262140 bytes

-----------------------

Prior to booting, I ran the ./setup.sh script in ./dvsdk/ and chose the defaults for all of the settings.  Is there another step I need to take?

Any help is appreciated, thank you.

  • 0
    Guru 26430 points

    You post seems to have fallen through the cracks. Usually TI guys respond by now. Maybe bumping this thread will bring eyes on it. I have no experience with the DM365 and ti's DVSDK. The setup.sh script is an indirection that complicates things a bit. For NFS, the bootargs will have root=/dev/nfs and nfsroot=your_nfshost_address:your_path_to_root_on_server,nolock. Also your target's network address must be specified. It you have dhcp then the bootargs should be ip=dhcp. For static address, it's a little more complicated. Bootargs then need to be ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:eth0:off  - details in kernel source at Documentation/filesystems/nfs/nfsroot.txt. Configuring a NFS server is another large task. All depends on what flavour of Linux server your have. A good place for info is the TI Wiki. Some DM365/NFS Wiki links:

    http://processors.wiki.ti.com/index.php/Linux_Host_Configuration_-_Ubuntu#Installing_a_NFS_Server
    http://processors.wiki.ti.com/index.php/GSG:_DM365_DVEVM_Software_Setup_for_MontaVista_Kernel#Creating_a_Shared_File_System_Between_Host_and_Target
    http://processors.wiki.ti.com/index.php/GSG:_DM365_DVEVM_Additional_Procedures#Booting_from_Flash_Using_NFS_File_System
    http://processors.wiki.ti.com/index.php/GSG:_DM365_DVEVM_Additional_Procedures#Booting_via_TFTP_Using_NFS_File_System
    http://processors.wiki.ti.com/index.php/UG:_DaVinci_PSP_Installation_on_DM365_EVM#Booting_with_NFS_as_a_root_filesystem

  • 0
    TI__Expert 5290 points

    Amy Lu said:
    bootargs=mem=116M console=ttyS0,115200n8 root=/mtdblock4 rw initrd=0x82000000,4M ip=off

    This bootargs won't work for NFS. Please look into the PSP user guide for the bootarg to be used for NFS boot.

    Regards,

    Vaibhav