Pass through kernel memory manager

Paul Chavent paul.chavent at fnac.net
Fri Feb 7 15:29:15 EST 2014


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.




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