Thanks for your answer.
But it doesn't work.
I think ioremap create a kernel panic. But I can't see because i have no UART ready.
Is there a way in order to trace the failure ?
2008/8/7, Juergen Beisert <j.beisert@pengutronix.de>:
Am Donnerstag, 7. August 2008 11:54 schrieb Sébastien Chrétien:
> Hello,
>
> I am trying to port linux on my Powerpc Board. I have used Linux 2.6.26 and
> gcc 3.4.5.
> I have used Uboot 1.2.
> Linux seems running from _start to udbg_early_init(). That's why I
> develloped a udbg_driver.
> It must write in a register which is located at 0x2001b044. So I wrote :
>
> void __iomem *p;
> p=ioremap(0x2001b044,4);
> iowrite32('O',p);
> iowrite32('K',p);
try
p=ioremap(0x2001b000, 0x1000);
iowrite32('O',p + 0x44);
iowrite32('K',p + 0x44);
instead.
jbe
--
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
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