00:20 <Armbian-Discord> <R​ichN> no the rpi has its bl on a spi-nor and they reconfigure its uEnv.txt to read where to allow booting from

00:20 <Armbian-Discord> <R​ichN> as most boards do not have spi-nor flash and there for only boot from emmc/mmc

00:21 <Armbian-Discord> <R​ichN> there for it limits how a board can boot if you dont have emmc

00:21 <Armbian-Discord> <R​ichN> so with out spi-nor flash to support the u-boot you are limited

00:22 <Armbian-Discord> <R​ichN> go back to the board manufacturers and tell them to fix their flaws and add a spi-nor flash option for the bl on thier boards

00:23 <Armbian-Discord> <R​ichN> then you could use opensbi+uboot +grub and boot with no issues

00:24 <Armbian-Discord> <R​ichN> the issue is they are doing their best to keep cost down so they skip this part and leave it for you to. use emmc/nvme for booting

00:24 <Armbian-Discord> <R​ichN> emmc for /boot and nvme for /root

00:25 <Armbian-Discord> <R​ichN> some boards have the space for a spi-nor flash they never populated

00:27 <Armbian-Discord> <R​ichN> and as far as I knwo the rpi will let you boot from usb flash/hd if you update the bl settings with their tool

00:57 <Armbian-Discord> <c​0rnelius> bcm2711 should just boot from USB with zero effort. The original pi4s needed the eeprom updated I believe but the newer ones just work.

00:58 <Armbian-Discord> <T​enkawa> Yes.

01:05 <Armbian-Discord> <T​enkawa> It wasn't always enabled on the 4's until:

01:05 <Armbian-Discord> <T​enkawa> Raspberry Pi 4 has bootloader eeprom firmware dated Sep 3 2020 or later.

15:12 <Armbian-Discord> <R​ichN> yeah

15:13 <Armbian-Discord> <R​ichN> this is where most arm boards come up short