> From: Christian Rueger <cr+li...@rueger-net.de> > Date: Mon, 11 Jan 2021 19:16:42 +0100 > > Hi, > > i have installed OpenBSD 6.7 on my Rock Pi 4 for some time and make > an upgrade to current. That works fine and i also update the > installed ports. I copy the new DTB file to vendor directory on the > sd0i partion, but how can i update the the old installed U-Boot?
You don't have to update U-Boot whenever you're updating your OS. Think of U-Boot as the BIOS of an x86 machine. You typically don't update the BIOS when you update the OS on such a system don't you? Updating U-Boot is not without risk. We can't test all the boards for which we build U-Boot and unfortunately the U-Boot developers don't always test things properly either. That said, sometimes new features get added to U-Boot for a particular board. In those cases I would recommond that you try the new U-Boot on a fresh uSD card first to see whether it still works properly on your hardware. This is especially easy if you installed U-Boot on separate media in the first place (i.e. U-Boot on a uSD card and OpenBSD on eMMC or a USB disk). > Should i upgrade the U-Boot image over tftp? > https://www.denx.de/wiki/view/DULG/UBootInstallUsingUBoot > > Or can i write the new image somewhere to the eMMC module? > > rockpi# fdisk sd0 > Disk: sd0 geometry: 15042/255/63 [241664000 Sectors] > Offset: 0 Signature: 0xAA55 > Starting Ending LBA Info: > #: id C H S - C H S [ start: size ] > ------------------------------------------------------------------------------- > *0: 0C 2 10 9 - 4 20 16 [ 32768: 32768 ] FAT32L > > 1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused > > 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused > > 3: A6 4 20 17 - 130 138 8 [ 65536: 2031616 ] OpenBSD > > Thanks, > Christian The procedure varies from SoC to SoC. The Rock Pi 4 is based on the RockChip RK3399 SoC. For that SoC, the procedure for updating U-Boot from OpenBSD is: dd if=idbloader.img of=/dev/sdNc seek=64 dd if=u-boot.itb of=/dev/sdNc seek=16384 where N is the number that corresponds to your uSD or eMMC device. Note that the RK3399 boards tend to prefer booting from eMMC over booting from uSD. So if you have U-Boot on your eMMC module and write the new U-Boot to uSD, it will not pick up the new U-Boot. Cheers, Mark
