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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=vodafonemail.de header.s=vfde-mb-mr2-21dec header.b=TaGi9hU+; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -1.43 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=vodafonemail.de header.s=vfde-mb-mr2-21dec header.b=TaGi9hU+; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 07B53C507 X-Spam-Score: -1.43 X-Migadu-Scanner: scn0.migadu.com X-TUID: k2XRK2LhZCEL Hi Vagrant! >> +(define-public %u-boot-rpi-efi-configs >> + '("CONFIG_OF_EMBED=3D" >> + "CONFIG_OF_BOARD=3Dy" >> + "CONFIG_BOOTDELAY=3D0")) >=20 > This is surely a matter of opinion, but CONFIG_BOOTDELAY=3D0 is kind = of > nasty; it makes it nearly impossible to debug from a u-boot prompt if > needed. The default is probably "2" ... long enough to actually > interrupt it, but short enough that it shouldn't cause huge delays in > the boot process... >=20 > I know grub-efi will add it's own delay, so in a working environment, > this just seems like an additional two seconds, but u-boot's EFI > implementation is changing often enough that I wouldn't be surprised = if > you need to occasionally debug something. During all the months of work to get Guix System booting over network = with U-Boot and GRUB, there was no need for me to play around on the = U-Boot prompt. I was even affected by a bug=C2=B9 preventing U-Boot to = detect my keyboard at all. The actual problem with that bug was not that = the U-Boot prompt was unusable, but that GRUB relies on the keyboard = functionality of U-Boot, so I couldn=E2=80=99t debug boot problems e.g. = due to kernel argument problems in GRUB. Well, in this constellation U-Boot just needs to find and load the = efi/boot/bootaa64.efi file. It doesn=E2=80=99t need to load device-tree = files or care for overlays. It doesn=E2=80=99t need to load other stuff = like SPL or other images. Its only purpose is to impose an EFI interface = and to load GRUB. So the benefit of the U-Boot prompt is quite limited. Also other distributions like openSUSE use U-Boot as EFI firmware, so I = think the basic EFI functionality is tested quite well. My preference is = to not bother pure users with a delayed boot time. However, I changed it = to CONFIG_BOOTDELAY=3D1. Bye Stefan =C2=B9 =