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[ts-7000] Re: Switch to real-time kernel on TS-7400

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Subject: [ts-7000] Re: Switch to real-time kernel on TS-7400
From: "dokapra" <>
Date: Mon, 11 May 2009 19:25:21 -0000
I have very bad experience with bootload and setting console parameters. I am 
using 7260, and there is a hardware support for selecting different serial 
ports as a console. But, certain combinations of this jumper together with 
"console=..." setting made kernel freeze. It did however answer to ping from my 
host machine.
Try to remove "console=/dev/ttyAM0,115200" part of parameter and see if it 
helps. You can test with ping to see if you have the same problem as I had. 
Seems to me that kernel gets stuck writing to console buffer, which never gets 
emptied for some reason.

--- In  "jeremie.chevalier" <> 
wrote:
>
> Hi folks,
> 
> Any idea on this? Didn't someone encounter this problem in the past?
> 
> Best regards,
> Jeremie.
> 
> PS: If I find the solution, I'll describe it here so that anyone that 
> encounters the problem in the future could be helped.
> 
> --- In  "jeremie.chevalier" <jeremie.chevalier@> 
> wrote:
> >
> > Dear all,
> > 
> > I'm currently trying to load a real-time kernel on a TS-7400 and can't 
> > manage to have it working.
> > 
> > The board computer I use is a stock TS-7400 with 2.4.26-ts11 kernel.
> > 
> > I've downloaded the kernel image "vmlinux-7400-ts11-rt.bin" (2.4.26) from 
> > TS's FTP and simply put it in the root directory of the YAFFS2 NAND 
> > filesystem. I also downloaded the kernel modules for 2.4.26-ts11-rt (got 
> > from the FTP as well) and put them in /lib/modules/2.4.26-ts11-rt/.
> > 
> > I'm trying to load the real-time kernel with the "bootload" command, but 
> > every time I try, it freezes. I'm not sure about the parameters to use, for 
> > example I tried the following: 
> > 
> > bootload -c "console=/dev/ttyAM0,115200 root=/dev/mtdblock/3" -r /dev/rd/0 
> > /vmlinux-7400-ts11-rt.bin
> > 
> > But this never works. I tried several values for the ramdisk, and for the 
> > "root=" parameter as well, but nothing seems to work. I don't want to use a 
> > SD card, I would just like to replace the current kernel (non-real-time) by 
> > the rt one, got from TS website.
> > 
> > Any thoughts on how I could proceed?
> > 
> > Best regards,
> > Jeremie.
> >
>




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