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charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2022-07-17, Stefan wrote: >>> +(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. ... > 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 f= iles > or care for overlays. It doesn=E2=80=99t need to load other stuff like SP= L 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. So if it does not find that one file, what do you do? > Also other distributions like openSUSE use U-Boot as EFI firmware, so > I think the basic EFI functionality is tested quite well. Sure, it has improved greatly. > My preference is to not bother pure users with a delayed boot > time. However, I changed it to CONFIG_BOOTDELAY=3D1. Well, from my perspective, this is obviously significantly less bad that 0 seconds... In general, it is my understanding that Guix prefers to go with upstream defaults, unless there is a strong argument otherwise. I do not personally see this as warranting a difference from upstream defaults to gain 1 or 2 seconds of boot time. live well, vagrant --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRlgHNhO/zFx+LkXUXcUY/If5cWqgUCYtRFIAAKCRDcUY/If5cW qkV1AQD5YpgU1NoDSozQ9h76dRLSKujel1If4JX8OoYBxJIeHQEAlkUgCXjX2S4i JAov6lkPch3hjAfJst0RxMN6yGAmjQQ= =z7Bo -----END PGP SIGNATURE----- --=-=-=--