From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>,
Alexander Graf <graf@campus.tu-berlin.de>
Cc: QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] hw/arm: add Lego NXT board
Date: Tue, 15 Jul 2014 09:06:36 +0200 [thread overview]
Message-ID: <53C4D2FC.50402@redhat.com> (raw)
In-Reply-To: <CAFEAcA9fai6EwHE0an4ALkJSSZz=s9qgx=Q1Wd9sSPHXaTJCKQ@mail.gmail.com>
Il 15/07/2014 00:48, Peter Maydell ha scritto:
>> > My interest is to fake sensor values for the guest and not to connect
>> > anything to real hardware. I think I misinterpreted your "chardev". To
>> > clarify: My guest is a bare metal ARM image, no linux and I don't want to
>> > interact with the host's hardware. So no chardev in the linux sense is
>> > involved.
> Right, but this is an optional part of Paolo's proposal as I understand
> it.
Correct, it's an additional part just to show that the interface can be
useful for much more than bypassing the GPL. :)
As to the protocol, I found a datasheet of an I2C-to-UART bridge that
could provide ideas:
http://www.nxp.com/documents/data_sheet/SC18IM700.pdf chapter 7, it's
very simple (just two commands, start and stop).
Paolo
next prev parent reply other threads:[~2014-07-15 7:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-13 14:20 [Qemu-devel] hw/arm: add Lego NXT board Alexander Graf
2014-07-14 11:23 ` Peter Crosthwaite
2014-07-14 11:46 ` Paolo Bonzini
2014-07-14 18:09 ` Alexander Graf
2014-07-14 20:37 ` Paolo Bonzini
2014-07-14 21:10 ` Alexander Graf
2014-07-14 22:48 ` Peter Maydell
2014-07-15 7:06 ` Paolo Bonzini [this message]
2014-07-15 10:26 ` Alexander Graf
2014-07-15 10:53 ` Paolo Bonzini
2014-07-15 18:55 ` Alexander Graf
2014-07-15 20:09 ` Paolo Bonzini
2014-07-16 8:40 ` Alexander Graf
2014-07-16 8:50 ` Paolo Bonzini
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