* Arnd Bergmann <arnd@xxxxxxxx> [150515 13:23]:
> On Friday 15 May 2015 22:16:24 Pali Rohár wrote:
> > On Friday 15 May 2015 22:12:41 Arnd Bergmann wrote:
> > > On Friday 15 May 2015 21:50:07 Pali Rohár wrote:
> > > > }
> > > >
> > > > }
> > > >
> > > > + /* include the terminating ATAG_NONE */
> > > > + atag_size = (char *)atag - (char *)atag_list +
> > > > sizeof(struct tag_header); + setprop(fdt, "/", "atags",
> > > > atag_list, atag_size);
> > > > +
> > > >
> > > > if (memcount) {
> > > >
> > > > setprop(fdt, "/memory", "reg", mem_reg_property,
> > > >
> > > > 4 * memcount * memsize);
> > >
> > > The property should probably have a DT binding, and be named
> > > "linux,atags".
> > >
> > > It may also help to check if the "linux,atags" property already
> > > exists and not create it otherwise. That way we can put it into the
> > > n900 dts file and have it updated by the compat code, but not expose
> > > the atags on other platforms unless they opt in.
Using "linux,atags" sounds good to me. And yes checking it with
getprop before doing setprop makes sense.
> > Maybe what would help: Is there a way to tell decompressor/kernel to not
> > touch atag memory and then after kernel/board-code starts it save copy
> > of atags? I think it is not possible right now, but correct me if I'm
> > wrong...
> >
>
> I don't think that is possible without an incompatible change to the
> boot protocol.
Agreed, let's keep the changes to minimum.
Looks like with the comments posted all the pending four patches
from Pali become quite a minimal set of three patches if we keep
the rev string as hex.
Regrds,
Tony
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