Hi Ricardo, Ricardo Wurmus <rek...@elephly.net> writes:
> Hi, > >>> I mounted the target disk (an SSD) at /mnt, made sure that the microSD >>> card was inserted, unmounted, and available at /dev/mmcblk1, and then >>> ran >>> >>> guix system init config.scm /mnt >>> >>> This was successful. >>> >>> Unfortunately, rebooting failed. There is seemingly no activity at all >>> when I power on the board, so something’s not right with how u-boot was >>> installed on the microSD card. >>> >>> Does it perhaps install the u-boot files at the wrong offsets? How >>> would I begin to debug this? >>> >>> I’d appreciate any hints. >> >> Sorry, I don't have any clue to offer, but were you able to solve or >> workaround your problem? > > Not quite, but I’ve learned more and understand the problem better. > > I manually copied the two u-boot files to the expected offsets on the > microsd card, and that let me boot Guix System from USB. But I have so > far been unsuccessful in my attempts to do this automatically as part of > “guix system init” (I haven’t tried this much) or to successfully patch > u-boot to boot from the SSD on the PCIe card (I have tried this a > lot). Heh, sounds tricky. > My next step is to attempt to install the whole system onto the microsd > card, just to end up with a usable system. If that works then nothing > is wrong with Guix (except for a lack of documentation), but it would be > a disappointing workaround. > > I think it should be possible to patch u-boot to initialize the PCIe > card and boot from the attached disk (with the patched u-boot residing > on the microsd card). I tried the relevant subset of the netbsd > patches, but the CPU keeps resetting after (successfully) enumerating > the PCI devices. If I recall from my limited experience with an embedded ARM, you'd have to register the newly supported hardware in the device tree of U-Boot/the kernel; do the patches applied take care of that? > I hope I can make some more time for this soon and overcome that last > hurdle — and then write a cookbook entry for all this :) I wish you luck! Cheers, Maxim
