Hi, Edgar. On Fri, May 20, 2016 at 7:05 PM, Edgar E. Iglesias <edgar.igles...@gmail.com> wrote: > Hi, > > We have similar needs (not exactly the same) in some of our setups. > We need to map certain OCMs (On Chip Memories) to dom0. Among other things, > these are used to communicate with remote accelerators/CPUs that have > "hardcoded" addresses to these RAMs. > > Our approach is more along the lines of Juliens second suggestion. We're > trying to use the mmio-sram DTS bindings to bring in these memories into > dom0. > > IIUC the Ducati FW issue correctly, you need to allocate a chunk of DDR. > > Another possible solution: > I think you could reserve the memory area by simply not mentioning it > in the main memory node (these nodes support multiple ranges so you can > introduce gaps). Then you could for example create an mmio-sram node to > get the memory explicitely mapped 1:1 into dom0. > > Just a moment ago, I posted an RFC for the mmio-sram support to the list. Thank You for advice. I'll try to use Your solution.
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