From: tglx@linutronix.de (Thomas Gleixner)
To: linux-mtd@lists.infradead.org
Subject: Unable to handle kernel paging request at virtualaddress80000013
Date: Mon, 31 Mar 2003 10:02:55 +0100 [thread overview]
Message-ID: <200303311102.55397.tglx@linutronix.de> (raw)
In-Reply-To: <3E87F022.F65810C7@thales-e-transactions.com>
On Monday 31 March 2003 09:37, Eric DEJONC wrote:
> Hi,
>
> I have a question....
> What is the physical start adress of flash mapping, and where can I find
> it. I get different results if I change this value. In the
> arch/arm/machsa1100/trizeps.c, its is written:
The physical address is defined by your board design. It depends on the
chipselect, addressdecoding...
The virtual address is the address which is used inside the kernel driver
code. This address is translated by the MMU into a physical address.
e.g.
MTD driver uses virtual address 0xf0000000 according to chip-mapping. So a
read from 0xf0000000 is a read from the physical address 0x30000000, which is
the physical hardware address of the flash chip.
--
Thomas
________________________________________________________________________
linutronix - competence in embedded & realtime linux
http://www.linutronix.de
mail: tglx at linutronix.de
next prev parent reply other threads:[~2003-03-31 9:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-27 14:00 Unable to handle kernel paging request at virtual address 80000013 Eric DEJONC
2003-03-27 14:12 ` David Woodhouse
2003-03-27 14:16 ` Unable to handle kernel paging request at virtual address80000013 Eric DEJONC
2003-03-27 15:20 ` Henrik Nordstrom
2003-03-27 16:58 ` Unable to handle kernel paging request at virtualaddress80000013 Eric DEJONC
2003-03-27 20:19 ` Thomas Gleixner
2003-03-31 7:37 ` Eric DEJONC
2003-03-31 9:02 ` Thomas Gleixner [this message]
2003-03-31 9:03 ` Eric DEJONC
2003-03-27 14:51 ` Unable to handle kernel paging request at virtual address 80000013 Jörn Engel
-- strict thread matches above, loose matches on Subject: below --
2004-03-25 19:02 Unable to handle kernel paging request at virtualaddress80000013 Patrick Kam
2004-03-25 19:39 ` Eric Hammerle
2004-03-25 20:04 ` David Woodhouse
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