[PATCH] riscv/start: Startup sequence update.

[somesh deshmukh]

Hi Sebastian,

For testing, I had manually added the device tree blob address into the a1
register.

On Fri, Apr 30, 2021 at 6:52 PM Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> On 29/04/2021 20:53, Sebastian Huber wrote:
>
> > On 29/04/2021 20:18, Hesham Almatary wrote:
> >
> >>>> I would place the device tree in a noinit section.
> >>>>
> >>> That is probably a better solution.
> >>>
> >>> It should also be documented in this start.S file what are the
> >>> assumptions about parameters coming from the bootloader since it is
> >>> not obvious.
> >> +1
> >
> > The recent GCC have an attribute for this:
> >
> > https://devel.rtems.org/ticket/3866
> >
> > We just need support for this in linkcmds.base and an RTEMS_NOINIT in
> > basedefs.h.
>
> The noinit attributes is a bit broken in GCC:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100357

Can we create one section in the linker script and rtems can use it for
copying the device tree blob?


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