Access to first 0x1000 byte on imx53/imx6

Robert Jarzmik robert.jarzmik at free.fr
Fri Jan 30 10:51:19 PST 2015


Sascha Hauer <s.hauer at pengutronix.de> writes:

> On Thu, Jan 29, 2015 at 08:25:54PM +0100, Robert Jarzmik wrote:
>> Sascha Hauer <s.hauer at pengutronix.de> writes:
>> I think the solution in arch/arm/boards/mioa701/board.c (remapping the 0x0
>> address) should work here :
>> 	docg3_iospace = map_io_sections(0x0, (void *)0xe0000000, 0x2000);
>
> We could create a /dev/zeropage with the code above. That would make the
> zero page generally available. I don't know if this is worth the effort
> though.

Yeah, I don't know if it's worth it either. And how "big" should this
/dev/zeropage be (4k, 1M, ...) ?

Cheers.

-- 
Robert



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