From mboxrd@z Thu Jan  1 00:00:00 1970
From: paul.chavent@fnac.net (Paul Chavent)
Date: Fri, 07 Feb 2014 21:29:15 +0100
Subject: Pass through kernel memory manager
Message-ID: <52F5421B.4070700@fnac.net>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi

I'm working on an ARM926EJS based SOM (OMAPL138). The ARM has internal memory spaces (8k one and 128k one) where i would like to put some code.

I thought to use something like :

void foobar (void) __attribute__ ((section ("bar")));

Then link with

-Wl,--section-start,bar=FFFF1000


But the Linux loader fails to load this segment.

So, is it worth to try to achieve to run code at desired position ?

Is there any way to tell Linux to 1:1 map some physical regions to processes address space ? Perhaps the memmap= kernel parameter ?

Thanks for your help.

Paul.