The kernel cannot mount filesystem on NAND with jffs2 formart

simayizhi

Hi,

I want burn the kernel and root filesystem into NAND on my DM6446 EVM, but it has some problem.

First,I burn the ramdisk.gz into NAND,and it cannot keep the file after restart. So, I begin to burn the .jffs2 file.
Then, the startup cannot finish, the kernel cannot mount filesystem like this:

Looking up port of RPC 100003/2 on 0.0.0.0
RPC: sendmsg returned error 22
portmap: RPC call returned error 22
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 0.0.0.0
RPC: sendmsg returned error 22
portmap: RPC call returned error 22
Root-NFS: Unable to get mountd port number from server, using default
RPC: sendmsg returned error 22
mount: RPC call returned error 22
Root-NFS: Server returned error -22 while mounting /tftpboot/192.168.0.3
VFS: Unable to mount root fs via NFS, trying floppy.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

I refer the file "commands,txt"(../dvsdk_2_00_00_22/PSP_2_00_00_140/docs/)
"
For NAND FFS - JFFS2:
setenv bootargs 'mem=116M console=ttyS0,115200n8 root=/dev/mtdblock3 rw rootfstype=jffs2 ip=dhcp video=davincifb:vid0=720x576x16,2500K:vid1=720x576x16,2500K:osd0=720x576x16,2025K davinci_enc_mngr.ch0_output=COMPOSITE davinci_enc_mngr.ch0_mode=ntsc' "

And I also refer this linker:http://tinymicros.com/wiki/DM6446_Notes#JFFS2_Variables

I think I cannot configure the u-boot parameter, and I need your help!

Is there some guide file with burning kernel and filesystem in NAND Flash on DM6446 EVM ?

Thanks,

mzs

over 13 years ago

0 Prabhakar Lad over 13 years ago

Guru 11260 points

Hi,

you can use this jffs2 image http://arago-project.org/files/releases/davinci-psp_3.x.0.0-r37/images/dm6446-evm/

from the release. Only setting the bootargs wont help you also need to enable while building the kernel

do a menuconfig and enable following configs,

CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=0 
CONFIG_JFFS2_FS_WRITEBUFFER=y
 CONFIG_JFFS2_ZLIB=y
CONFIG_JFFS2_RTIME=y

Refer this link http://processors.wiki.ti.com/index.php?title=Filesystem_in_NOR_or_NAND#DM6446_DVEVM_configuration
to set the cmd line parameters.

Thx,
--Prabhakar Lad

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The kernel cannot mount filesystem on NAND with jffs2 formart