From: Mark Brown <broonie@kernel.org>
To: Javier Martinez Canillas <javierm@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
dri-devel <dri-devel@lists.freedesktop.org>,
Peter Robinson <pbrobinson@gmail.com>,
kernel test robot <lkp@intel.com>, Borislav Petkov <bp@suse.de>,
Colin Ian King <colin.king@canonical.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Dinh Nguyen <dinguyen@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
John Stultz <john.stultz@linaro.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Linus Walleij <linus.walleij@linaro.org>,
Nicolas Saenz Julienne <nsaenz@kernel.org>,
Sudeep Holla <sudeep.holla@arm.com>
Subject: Re: [PATCH v2] drivers/firmware: fix SYSFB depends to prevent build failures
Date: Tue, 27 Jul 2021 12:49:59 +0100 [thread overview]
Message-ID: <20210727114959.GQ4670@sirena.org.uk> (raw)
In-Reply-To: <e3f0f7a0-2130-18be-48a4-af1918017eca@redhat.com>
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On Tue, Jul 27, 2021 at 01:32:29PM +0200, Javier Martinez Canillas wrote:
> On 7/27/21 1:17 PM, Geert Uytterhoeven wrote:
> > Do all (embedded) EFI systems have a frame buffer?
> That's a good question. I don't know if all EFI firmwares are expected
> to provide a GOP or not. But even the u-boot EFI stub provides one, if
> video output is supported by u-boot on that system.
No, GOP is only mandatory for systems with a graphical console device
even assuming things fully conform to the spec. Indeed I've got a
non-embedded EFI based system sitting next to my desk here which only
has a serial console, never mind anything embedded.
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prev parent reply other threads:[~2021-07-27 11:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 9:30 Javier Martinez Canillas
2021-07-27 9:50 ` Daniel Vetter
2021-07-27 10:03 ` Geert Uytterhoeven
2021-07-27 10:22 ` Javier Martinez Canillas
2021-07-27 11:17 ` Geert Uytterhoeven
2021-07-27 11:32 ` Javier Martinez Canillas
2021-07-27 11:39 ` Geert Uytterhoeven
2021-07-27 11:54 ` Javier Martinez Canillas
2021-07-27 11:49 ` Mark Brown [this message]
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