How to fill a memory region with specific bytes？

How to fill a memory region with specific bytes？

[Duo jia]

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Many SOCs have unique id, which is a fixed string of bytes.
I use "memory_region_init_ram" and "memory_region_add_subregion" to
simulate this region, how can I initialize specific bytes to fill?


thks~~~

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Re: How to fill a memory region with specific bytes？

[Peter Maydell]

On Sat, 18 Sept 2021 at 03:55, Duo jia <jiaduo19920301@gmail.com> wrote:
>
> Many SOCs have unique id, which is a fixed string of bytes.
> I use "memory_region_init_ram" and "memory_region_add_subregion" to simulate this region, how can I initialize specific bytes to fill?

Mostly we just model that kind of thing as a register
in an IO MemoryRegion. Often it's not a single thing
on its own, but is part of a larger device or other
block of registers anyway, so modeling it as part of that
other device is simpler.

-- PMM