[PATCH v4] drivers/soc/litex: Add restart handler

Geert Uytterhoeven geert at linux-m68k.org
Wed Jan 20 03:21:53 EST 2021


Hi Anup,

On Tue, Jan 19, 2021 at 9:18 AM Anup Patel <anup at brainfault.org> wrote:
> On Tue, Jan 19, 2021 at 1:40 PM Geert Uytterhoeven <geert at linux-m68k.org> wrote:
> > Let the LiteX SoC Controller register a restart handler, which resets
> > the LiteX SoC by writing 1 to CSR_CTRL_RESET_ADDR.
> >
> > Signed-off-by: Geert Uytterhoeven <geert at linux-m68k.org>
>
> We have SBI System Reset Extension (SRST) in upcoming
> SBI v0.3 spec. Using this SBI extension, you will not require a
> dedicated reboot driver for various projects such as Linux kernel,
> U-Boot, EDK2, FreeBSD kernel, etc.
>
> The OpenSBI v0.9 (released yesterday) already has SBI SRST
> extension implemented so we will just need platform hooks for
> LiteX.
>
> The Linux support for SRST extension is already available on
> LKML so far no comments: https://lkml.org/lkml/2020/11/25/6

Thanks, that would cover RISC-V.
But what about other users of LiteX, like openrisc and powerpc?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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