linux hang on i.mx35 board, a sdma problem?

Fabio Estevam festevam at
Thu Oct 7 10:42:46 EDT 2010

Hi Alexander,

On Thu, Oct 7, 2010 at 11:23 AM, Alexander Stein
<alexander.stein at> wrote:
> Hello,
> I'm currently developing on an i.mx35 board (http://www.ic-
> (I use the
> mx35_pdk config for linux kernel)
> and noticed a strange behavior. If I run it while openocd is attached to JTAG
> linux stops/seem to stop during boot after initializing FEC. But if I stop the
> execution and attach gdb I can see it loops inside default_idle. After
> removing the fec driver the same goes until the first few chars printed from
> busybox init (run from initramfs).
> If I don't attach openocd to JTAG, the system boots fine, but I cannot attach
> openocd to the running linux system.

Pass 'nohlt' in your kernel command line when you boot Linix with the
JTAG cable connected.


Fabio Estevam

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