Hi Ohad,

On 09/23/2014 09:16 AM, Ohad Ben-Cohen wrote:

Hi Suman,

On Mon, Sep 15, 2014 at 10:39 PM, Suman Anna [off-list ref] wrote:

quoted

These processors need to use their internal RAM for loading, which is
not for generic usage by the kernel, so defining a CMA block for this
memory doesn't make sense.

Ok - so just to make sure I understand, this is physical memory you
want to use, which belongs to the remote processor, and which isn't
mapped normally by the kernel?

Yes, this is not the regular DDR that is mapped into kernel normally,
but is a RAM internal to the remote processor subsystem. The MPU can
access it through a bus address/

quoted

Will it suffice to replace the memcpy() with memcpy_toio()?

Yes, memcpy_toio should be fine (and then you don't need to cast the
cookie returned by ioremap).

I have posted v2, and have not modified for this. The memcpy portion is
actually present in the remoteproc_elf_loader.c, and looks like I need
to export some flags from rproc_va_to_da if I were to differentiate
this. Is that ok with you?

regards
Suman