linux-kernel - Re: [PATCH 26/41] ARM: omap1: relocate static I/O mapping

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Message-ID: <CAK8P3a00DgKYdzTZFiBfKDF_zwaJjL6Duw8aOOJ-gVkz4L1ZwQ@mail.gmail.com>
Date:   Wed, 20 Apr 2022 21:20:46 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Aaro Koskinen <aaro.koskinen@....fi>
Cc:     linux-omap <linux-omap@...r.kernel.org>,
        Tony Lindgren <tony@...mide.com>,
        Janusz Krzysztofik <jmkrzyszt@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Paul Walmsley <paul@...an.com>,
        Kevin Hilman <khilman@...nel.org>,
        Peter Ujfalusi <peter.ujfalusi@...il.com>,
        Vinod Koul <vkoul@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Mark Brown <broonie@...nel.org>,
        Felipe Balbi <balbi@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Helge Deller <deller@....de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: [PATCH 26/41] ARM: omap1: relocate static I/O mapping

On Wed, Apr 20, 2022 at 3:46 PM Aaro Koskinen <aaro.koskinen@....fi> wrote:
>
> Hi,
>
> On Tue, Apr 19, 2022 at 03:37:08PM +0200, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@...db.de>
> >
> > The address range 0xfee00000-0xfeffffff is used for PCI and
> > PCMCIA I/O port mappings, but OMAP1 has its static mappings
> > there as well.
> >
> > Move the OMAP1 addresses a little higher to avoid crashing
> > at boot.
>
> This has the same problem I reported in 2019, with earlyprintk the
> system no longer boots:
>
>         https://marc.info/?t=156530014200005&r=1&w=2
>
> Tested on OSK and SX1/qemu.

Thanks a lot for testing!

I managed to get to the bottom of this after just a few hours, and
it turned out to be a simple math error on my end, as I got
the alignment wrong, the offset has to be 0x00f00000
instead of 0x00fb0000 be section aligned. I made sure the
kernel boots up (to the point of missing a rootfs) and uploaded
the fixed branch.

      Arnd