[PATCH] riscv: ae350: Support openSBI 1.0+ which enable FW_PIC

[Bin Meng]

On Thu, Dec 22, 2022 at 1:23 PM Rick Chen <rickchen36 at gmail.com> wrote:
>
> Hi Bin,
>
> > On Wed, Dec 21, 2022 at 10:29 AM Rick Chen <rick at andestech.com> wrote:
> > >
> > > Change openSBI load address from 0x1000000 to 0x0 and it
> >
> > nits: OpenSBI
>
> OK, will fix it.
>
> >
> > > will start to run at 0x0 directly without relocation.
> > >
> > > Signed-off-by: Rick Chen <rick at andestech.com>
> > > ---
> > >  board/AndesTech/ax25-ae350/Kconfig | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/board/AndesTech/ax25-ae350/Kconfig b/board/AndesTech/ax25-ae350/Kconfig
> > > index 36b67f0b52..4bb33b0793 100644
> > > --- a/board/AndesTech/ax25-ae350/Kconfig
> > > +++ b/board/AndesTech/ax25-ae350/Kconfig
> > > @@ -25,7 +25,7 @@ config SPL_TEXT_BASE
> > >         default 0x800000
> > >
> > >  config SPL_OPENSBI_LOAD_ADDR
> > > -       default 0x01000000
> > > +       default 0x00000000
> > >
> > >  config SYS_FDT_BASE
> > >         hex
> > > --
> >
> > Can you describe why is this change a must have, like why 0x01000000
> > does not work?
>
> When I prepare this patch, I have tried two OpenSBI address, 0x1000000 and 0x0.
> And both boot successfully. I think maybe the Kernel Image is smaller
> one that it just don't overlap
> the memory region !

But why 0x01000000 does not work?

Regards,
Bin