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From: Peter Maydell <peter.maydell@linaro.org>
Date: Wed, 13 Dec 2017 16:48:27 +0000
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Subject: Re: [Qemu-devel] [PATCH 3/3] hw/arm/virt-acpi-build: Add second
 UART to ACPI tables
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To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Laszlo Ersek <lersek@redhat.com>, 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>

On 13 December 2017 at 16:46, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
> The kernel uses the contents of the SPCR table or /chosen/stdout-path
> as the console unless overridden on the kernel command line. This is
> independent of enumeration order.

True, but we don't want to assign ttyAMA0 and ttyAMA1 to the
UARTs arbitrarily -- ttyAMA0 must continue to be the one
at address 0x09000000, or we break commandlines.

thanks
-- PMM