From: Juergen Beisert <j.beisert@pengutronix.de>
To: linuxppc-dev@ozlabs.org
Cc: "Sébastien Chrétien" <sebastien.chretien.enseirb@gmail.com>
Subject: Re: Powerpc and ioremap
Date: Thu, 7 Aug 2008 12:23:11 +0200 [thread overview]
Message-ID: <200808071223.11156.j.beisert@pengutronix.de> (raw)
In-Reply-To: <319b0ac50808070254x27606b48sb15fb4ee6105c6c6@mail.gmail.com>
Am Donnerstag, 7. August 2008 11:54 schrieb S=E9bastien Chr=E9tien:
> Hello,
>
> I am trying to port linux on my Powerpc Board. I have used Linux 2.6.26 a=
nd
> 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=3Dioremap(0x2001b044,4);
> iowrite32('O',p);
> iowrite32('K',p);
try
p=3Dioremap(0x2001b000, 0x1000);
iowrite32('O',p + 0x44);
iowrite32('K',p + 0x44);
instead.
jbe
=2D-=20
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
Pengutronix - Linux Solutions for Science and Industry
Handelsregister: Amtsgericht Hildesheim, HRA 2686
Hannoversche Str. 2, 31134 Hildesheim, Germany
Phone: +49-5121-206917-7 | Fax: +49-5121-206917-9
next prev parent reply other threads:[~2008-08-07 10:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-07 9:54 Powerpc and ioremap Sébastien Chrétien
2008-08-07 10:23 ` Juergen Beisert [this message]
2008-08-07 12:15 ` Sébastien Chrétien
2008-08-07 12:56 ` Sébastien Chrétien
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