linux-kernel - Re: [PATCH] serial/sifive: select SERIAL

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Message-ID: <mhng-218f6b9f-bfd8-4adb-8147-298989494bcf@palmer-si-x1e>
Date:   Fri, 13 Sep 2019 13:40:27 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...ive.com>
To:     schwab@...e.de, Christoph Hellwig <hch@....de>
CC:     schwab@...e.de, Greg KH <gregkh@...uxfoundation.org>,
        jslaby@...e.com, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, Christoph Hellwig <hch@....de>
Subject:     Re: [PATCH] serial/sifive: select SERIAL_EARLYCON

On Tue, 10 Sep 2019 07:36:30 PDT (-0700), Christoph Hellwig wrote:
> On Tue, Sep 10, 2019 at 10:18:15AM +0200, Andreas Schwab wrote:
>> > How so?  Wіth OF and a stdout path you just set earlycon on the
>> > command line without any arguments and it will be found.
>> 
>> Doesn't work for me.
>> 
>> [    0.000000] Malformed early option 'earlycon'
>
> That functionality is implemented by param_setup_earlycon and
> early_init_dt_scan_chosen_stdout.  Check why those aren't built into
> your kernel.

OpenEmbedded passes "earlycon=sbi", which I can find in the doumentation.  I 
can't find anything about just "earlycon".  I've sent a patch adding sbi to the 
list of earlycon arguments.