Tharmarajan, I believe you need to rebuild your codec server with a different memory map. Another idea is to have a hole in the kernel memory space (specify mem= in the kernel command line twice). I am not sure if the kernel version you are using for dm355 supports a hole in the kernel memory space.
Todd On Mon, 2010-07-05 at 19:44 +0530, Tharmarajan Ganeshan wrote: > Hi All, > We are working on a DM355 processor based Development > board. The Board has 256MB mDDR RAM and 5MP image sensor MT9P031. > > We are using the kernel version 2.6.10 > > We have modified the driver code for capturing 5MP raw > image and converting this 5MP raw into YUV. For this 5MP image > capturing , we have reserved 30MB. > > We have allocated 56MB to the CMEM driver. > > The reserved memory 30MB and the 56MB memory for CMEM are > at top of the RAM. > > We are passing the remaining memory size to the kernel in > bootargs as mem=170M. And we are using the NFS rootfilesystem. > > But we are getting kernel hanging issues while testing the > IPNC_APP applications and 5MP still image capturing. Sometimes the > kernel is hanging while booting itself. > > > If we reserve the 30MB from the address region 0x83200000 > - 0x84FFFFFF and pass the memory size to kernel in bootargs as > mem=50M, then we are NOT having any issues in running the > applications. But we want to use the exact remaining memory. > > And also we are not able to program the NAND flash memory > in kernel level if we are not passing the mem=50M in bootargs. > > What could be the cause for this kernel hanging issue ? > > Are we missing any configurations while building the > kernel image ? > > Our Bootargs is : > mem=50M console=ttyS1,115200n8 root=/dev/nfs rootwait rw > ip=192.168.1.90:192.168.1.99:192.168.1.1:255.255.255.0 > nfsroot=192.168.1.99:/tftpboot/bellatrix_rootfilesystem,nolock > eth=00:0C:0C:A0:01:FE v4l2_video_capture=:device=MT9P031 > > > > Regards, > Tharmarajan G > > > _______________________________________________ > Davinci-linux-open-source mailing list > [email protected] > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
_______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
