Public bug reported: Hi all,
Apologies if this is not the proper location for reporting this bug / feature request. If there is a more applicable place for it, please just let me know. I have been doing some testing on the newly released Raspberry Pi 3 64-bit ARM preinstalled server image located here: http://cdimage.ubuntu.com/releases/18.04/beta/ I am particularly interested in running this image on the Raspberry Pi Compute Module 3 (the model that has 4gb of eMMC onboard, located here: https://www.raspberrypi.org/products/compute-module-3). However, after flashing this Ubuntu Server image to the Compute Module 3, U-boot is unable to locate a device tree and proceed with booting. The serial console output is: U-Boot 2018.03+dfsg1-2ubuntu1.1~18.04.1~test1 (Nov 20 2018 - 11:50:30 +0000) DRAM: 948 MiB RPI: Board rev 0xa unknown RPI Unknown model (0xa020a0) MMC: mmc@7e202000: 0, sdhci@7e300000: 1 Loading Environment from FAT... WARNING at /build/u-boot-B3y2jo/u-boot-2018.03+dfsg1/drivers/mmc/bcm2835_sdhost.c:437/bcm2835_send_command()! WARNING at /build/u-boot-B3y2jo/u-boot-2018.03+dfsg1/drivers/mmc/bcm2835_sdhost.c:437/bcm2835_send_command()! OK In: serial Out: serial Err: serial Net: No ethernet found. Hit any key to stop autoboot: 0 libfdt fdt_check_header(): FDT_ERR_BADMAGIC No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! 23914504 bytes read in 817 ms (27.9 MiB/s) 18931168 bytes read in 648 ms (27.9 MiB/s) ERROR: Did not find a cmdline Flattened Device Tree Could not find a valid device tree U-Boot> I can flash and boot a default Raspbian image fine on this Compute Module 3, so, the hardware is functional. I made a few attempts at configuring an FDT address as the error indicates, but was unsuccessful. I also copied over a Compute Module 3 .dtb from Raspbian and placed it the boot partition of this Ubuntu image, but that was also a failure. As you can tell, U-boot is not my area of expertise. It would be great if the CM3 was able to be supported out of the box, with no additional input or configuration needed by the user (such as is currently the case in Raspbian). Thanks in advance for any efforts. ** Affects: linux-raspi2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806813 Title: Add Pi Compute Module 3 Support To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1806813/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
