![]() Unfortunately there seems to be race condition or timing issue in the kernel with disabling emulation and enabling instructon support as booting will stall so right now this is not a good option. These settings can be put in /etc/nf like so: abi.cp15_barrier = 2 The kernel log will be flooded with messages about this, to silence them run: echo 2 >/proc/sys/abi/setend The 64-bit ARM ABI deprecates some instructions that are still used in the 32-bit userland binaries. Silence kernel warnings about deprecated instructions There are still some issues with device support. The 64-bit Raspberry Pi kernel is not yet complete. Then reboot your Pi and you should be running the stock 32-bit kernel again. Or rename/remove the kernel8.img to something else, as otherwise it will still be used as default. If you would like to go back to using a default 32-bit kernel, just remove or comment out (with #) the lines added to config.txt, like so: #device_tree=dtbs/4.14.33-v8+/broadcom/bcm2710-rpi-3-b.dtb Linux raspberrypi 4.9.51-v8+ #1 SMP PREEMPT Mon Oct 2 15:25: aarch64 GNU/Linux Going back to a 32-bit kernel To confirm that you are on a 64-bit kernel, you can check with arch or uname, they should respond with aarch64, like this: $ arch If all goes well and you did the above steps correctly you should now be running a 64-bit kernel on your Pi 3. Install Raspberry Pi OS using Raspberry Pi Imager Raspberry Pi Imager is the quick and easy way to install Raspberry Pi OS and other operating systems to a microSD card, ready to use with your Raspberry Pi. Also point the device_tree to the correct model, bcm2710-rpi-3-b.dtb or bcm2710-rpi-3-b-plus.dtb: device_tree=dtbs/ 4.14.33-v8+/broadcom/ bcm2710-rpi-3-b.dtb Raspberry Pi OS (previously called Raspbian) is our official supported operating system. The paths are kernel version specific so adjust as needed. ![]() kernel-out/arch/arm64/boot/Image /boot/kernel8.imgĮdit /boot/config.txt and add/modify the the following configuration options. Install kernel, DTBs, device overlays and kernel modulesįirst, install the kernel modules and DTBs make O=./kernel-out/ ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- modules_install dtbs_install Kernel, device overlays and kernel modules All commands must be run as root, so either login as root or prefix commands with sudo. Now that you have the kernel and modules built, the next step is to install configure your Raspberry Pi 3 to boot it. So now you should have a shiny 64-bit kernel if you followed the 64-bit kernel build tutorial, and if not, do it first. ![]()
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