All of lore.kernel.org
 help / color / mirror / Atom feed
From: Peter Maydell <peter.maydell@linaro.org>
To: Laszlo Ersek <lersek@redhat.com>
Cc: Shannon Zhao <zhaoshenglong@huawei.com>,
	qemu-arm <qemu-arm@nongnu.org>,
	QEMU Developers <qemu-devel@nongnu.org>,
	"Jason A . Donenfeld" <Jason@zx2c4.com>,
	Drew Jones <drjones@redhat.com>,
	Andrea Bolognani <abologna@redhat.com>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [Qemu-devel] [PATCH 3/3] hw/arm/virt-acpi-build: Add second UART to ACPI tables
Date: Wed, 13 Dec 2017 13:56:36 +0000	[thread overview]
Message-ID: <CAFEAcA8ySsNx-rz__Nfbmd+QM3nKbgRXJtwSYjhRRvqbokt+uQ@mail.gmail.com> (raw)
In-Reply-To: <ac182406-8011-9f19-38e7-37328434095b@redhat.com>

On 12 December 2017 at 11:06, Laszlo Ersek <lersek@redhat.com> wrote:
> BTW, has anyone tested this with the ArmVirtQemu firmware? As far as I
> can see from the firmware code, the firmware will use the PL011 whose
> description comes first in the DTB (and ignore the other PL011), in an
> fdt_next_node() traversal. Is that OK for the intended use case?

I have now tested this, and annoyingly UEFI and the kernel seem
to disagree about enumeration order. That is, if QEMU creates
them in the code in the order 0x09050000 (uart 2), 0x09000000 (uart 1),
then they appear in the dtb with uart 1 first, and the kernel enumerates
them as ttyAMA0 being uart 1 and ttyAMA1 being uart 2, but UEFI
outputs to uart 2...

thanks
-- PMM

  parent reply	other threads:[~2017-12-13 13:56 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-08 15:02 [Qemu-devel] [PATCH 0/3] hw/arm/virt: Add another UART Peter Maydell
2017-12-08 15:02 ` [Qemu-devel] [PATCH 1/3] hw/arm/virt: Add virt-2.12 machine type Peter Maydell
2017-12-12 14:39   ` Andrew Jones
2018-01-15 12:00     ` Peter Maydell
2017-12-08 15:02 ` [Qemu-devel] [PATCH 2/3] hw/arm/virt: Add another UART to the virt board Peter Maydell
2017-12-12  5:55   ` Shannon Zhao
2017-12-12 10:45     ` Peter Maydell
2017-12-12 14:25       ` Jason A. Donenfeld
2017-12-12 14:45   ` Andrew Jones
2017-12-12 14:50     ` Peter Maydell
2017-12-12 15:16       ` Andrew Jones
2017-12-12 15:51         ` Peter Maydell
2018-05-31  2:12           ` Jason A. Donenfeld
2018-05-31  8:32             ` Peter Maydell
2018-05-31 11:48               ` Jason A. Donenfeld
2018-05-31 11:57                 ` Peter Maydell
2017-12-12 15:16   ` Andrew Jones
2017-12-08 15:02 ` [Qemu-devel] [PATCH 3/3] hw/arm/virt-acpi-build: Add second UART to ACPI tables Peter Maydell
2017-12-12  5:53   ` Shannon Zhao
2017-12-12 11:06     ` Laszlo Ersek
2017-12-12 11:11       ` Peter Maydell
2017-12-12 11:33         ` Laszlo Ersek
2017-12-12 11:44           ` Ard Biesheuvel
2017-12-12 11:59             ` Laszlo Ersek
2017-12-12 12:07               ` Peter Maydell
2017-12-12 12:41                 ` Laszlo Ersek
2017-12-12 12:47                   ` Peter Maydell
2017-12-12 13:28                     ` Laszlo Ersek
2017-12-12 13:56                       ` Ard Biesheuvel
2017-12-12 14:10                         ` Peter Maydell
2017-12-12 14:12                           ` Ard Biesheuvel
2017-12-12 14:13                             ` Peter Maydell
2017-12-12 14:16                               ` Ard Biesheuvel
2017-12-12 14:17                                 ` Peter Maydell
2017-12-12 14:31                                   ` Ard Biesheuvel
2017-12-12 14:51                                     ` Andrew Jones
2017-12-12 16:38                                       ` Laszlo Ersek
2017-12-12 14:18                         ` Andrew Jones
2017-12-12 14:10                       ` Andrew Jones
2017-12-12 15:09       ` Andrew Jones
2017-12-13 13:56       ` Peter Maydell [this message]
2017-12-13 16:01         ` Laszlo Ersek
2017-12-13 16:46           ` Ard Biesheuvel
2017-12-13 16:48             ` Peter Maydell
2017-12-08 15:10 ` [Qemu-devel] [Qemu-arm] [PATCH 0/3] hw/arm/virt: Add another UART Peter Maydell

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAFEAcA8ySsNx-rz__Nfbmd+QM3nKbgRXJtwSYjhRRvqbokt+uQ@mail.gmail.com \
    --to=peter.maydell@linaro.org \
    --cc=Jason@zx2c4.com \
    --cc=abologna@redhat.com \
    --cc=ard.biesheuvel@linaro.org \
    --cc=drjones@redhat.com \
    --cc=lersek@redhat.com \
    --cc=qemu-arm@nongnu.org \
    --cc=qemu-devel@nongnu.org \
    --cc=zhaoshenglong@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.