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From: "Herrenschmidt, Benjamin" <benh@amazon.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "x86@kernel.org" <x86@kernel.org>
Subject: SPCR and default serial port
Date: Wed, 15 Apr 2020 06:04:02 +0000	[thread overview]
Message-ID: <364e0ff5da091ed7faa0232302b6181ac30000de.camel@amazon.com> (raw)

Hi !

Today, arm64 allows the serial port specified in ACPI SPCR table to be
selected as a default console, but x86 doesn't (second argument to
acpi_parse_spcr).

I understand while we might have been worried of breaking existing
setups back then but should we re-think this, maybe via a CONFIG option
?

It makes a lot of sense to have firmware tell us which of the
potentially many serial port in a system is our active console, along
with its configuration...

This also shouldn't cause problem on systems that already specify a
console explicitly on the command line.

Any opinion ?

Cheers,
Ben.


             reply	other threads:[~2020-04-15  6:04 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-15  6:04 Herrenschmidt, Benjamin [this message]
2020-04-17  3:29 ` Jon Masters

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