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[ts-7000] Re: User FPGA Bitstream Hangs the TS-7300 at Times]

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Subject: [ts-7000] Re: User FPGA Bitstream Hangs the TS-7300 at Times]
From: Ross Wolin <>
Date: Tue, 21 Nov 2006 17:49:58 -0800
Jesse,

/linuxrc is a link to BusyBox.... presumably you meant linuxrc2...

Could you start by telling me where the initrd is that I need to 
modify?  (And where's the kernel for that matter?)  I think if I knew 
where the initrd was located and how to get it on/off the SDCard, I 
might be able to modify it.

"find / -name "initrd*" -print" didn't seem to locate it.

The ARM Linux documentation I found on your site deals with RedBoot.
The TS7300 uses something called "TS-SDBOOT"

Is the initrd in one of the two "mystery partitions" on the SDCard?  If 
so, how to I modify it?

        :~$ fdisk -l

        Disk /dev/sdb: 509 MB, 509083648 bytes
        16 heads, 32 sectors/track, 1942 cylinders
        Units = cylinders of 512 * 512 = 262144 bytes

           Device Boot      Start         End          Blocks   Id  System
        /dev/sdb1               1           6            1520   da  Non-FS data
        /dev/sdb2               7          10            1024   da  Non-FS data
        /dev/sdb3              20        1935          490496   83  Linux



Thanks,
Ross


====================

Jesse Off wrote:

> --- In  <ts-7000%40yahoogroups.com>, 
> "Ross" <> wrote:
> >
> >
> >
> > Jesse,
> >
> > Actually what I would like to do is load my own bitstream during the
> > initial boot and never have the default TS one get loaded. I would
> > assume if I did that the drivers you mention (as well as the second
> > ethernet controller which I don't implement in my bitstream) would
> > never get loaded because the h/w devices aren't present. Could you
> > provide details of how to load my own bitstream automatically during
> > the initial boot?
>
> You probably want to modify the /linuxrc and /bin/startfpga scripts
> in the initrd. They are pretty simple scripts and should be fairly
> self-explanatory. You will want to remove the insmod lines for the
> drivers for the FPGA logic you are replacing. (video, serial,
> ethernet (open_eth), and SD card)
>
> You may be able to rmmod the modules also and the load your
> bitstream, but I'm not positive all the Linux drivers can be rmmod'ed
> (esp. the video drivers) gracefully.
>
> //Jesse Off
>
>
>
>  







 
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