linux-kernel - Re: [PATCH 1/2] sh: bios: Revive earlyprintk support

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Message-ID: <CAMuHMdWnJ-BFxPZ-zVkP=euzMPAFnz1h6CRdNvPbuHwuspq1tQ@mail.gmail.com>
Date:   Fri, 20 Oct 2023 09:10:47 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Jonathan Corbet <corbet@....net>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Magnus Damm <magnus.damm@...il.com>, linux-doc@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] sh: bios: Revive earlyprintk support

Hi Adrian,

On Thu, Oct 19, 2023 at 5:51 PM John Paul Adrian Glaubitz
<glaubitz@...sik.fu-berlin.de> wrote:
> On Thu, 2023-10-19 at 08:48 -0700, Randy Dunlap wrote:
> > > +config EARLY_PRINTK
> > > +   bool "Early printk"
> > > +   depends on SH_STANDARD_BIOS
> > > +   help
> > > +     Say Y here to redirect kernel printk messages to the serial port
> > > +     used by the SH-IPL bootloader, starting very early in the boot
> > > +     process and ending when the kernel's serial console is initialised.
> > > +     This option is only useful while porting the kernel to a new machine,
> >
> > Can we expect to see new machine ports using arch/sh/ ?
>
> There is J-Core which is new open source hardware based on arch/sh.

Do J-Core systems use the LinuxSH standard BIOS?
Still, it can be useful while converting existing SH systems to DT.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-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