From 94ba553ce9cea4c468a56cda3607000483f613e7 Mon Sep 17 00:00:00 2001
From: Arturs Artamonovs <arturs.artamonovs@protonmail.com>
Date: Fri, 20 Oct 2023 08:18:22 +0100
Subject: Qemu arm64 post

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+title:Qemu ARM64
+keywords:arm64,linux,kernel,initrd
+
+# Qemu ARM64
+
+How to run QEMU with various ARM64 images.
+Not covering full blown support of each distribution. Goal is just to get to Linux shell
+and no more further at this stage. 
+
+## Run Ubuntu Image
+
+```bash
+wget -c https://cdimage.ubuntu.com/releases/22.04/release/ubuntu-22.04.3-live-server-arm64.iso
+```
+
+
+## Run Debian Image
+
+```bash
+wget -c http://http.us.debian.org/debian/dists/bookworm/main/installer-arm64/current/images/netboot/debian-installer/arm64/initrd.gz
+wget -c http://http.us.debian.org/debian/dists/bookworm/main/installer-arm64/current/images/netboot/debian-installer/arm64/linux
+```
+
+Prepare qemu empty hdd image
+
+```bash
+qemu-img create -f qcow2 hda.qcow2 5G
+```
+
+Boot image and follow installation steps. That will install Debian ARM64 distribution
+
+```bash
+qemu-system-aarch64 -M virt -m 1024 -cpu cortex-a53 \
+  -kernel linux \
+  -initrd initrd.gz \
+  -drive if=none,file=hda.qcow2,format=qcow2,id=hd \
+  -device virtio-blk-pci,drive=hd \
+  -netdev user,id=mynet \
+  -device virtio-net-pci,netdev=mynet \
+  -nographic -no-reboot
+```
+
+get guestfs-tools to make below commands work [https://libguestfs.org/](https://libguestfs.org/)
+
+find vmlinuz and initrd names in /boot directory
+
+```
+virt-ls -a hda.qcow2 /boot
+virt-copy-out -a hda.qcow2 /boot/vmlinuz-6.1.0-12-arm64 /boot/initrd.img-6.1.0-12-arm64 .
+```
+
+Boot qemu with installed debian arm64 image
+
+```
+qemu-system-aarch64 -M virt -m 1024 -cpu cortex-a53 \
+  -kernel vmlinuz-6.1.0-12-arm64 \
+  -initrd initrd.img-6.1.0-12-arm64 \
+  -append 'root=/dev/vda2' \
+  -drive if=none,file=hda.qcow2,format=qcow2,id=hd \
+  -device virtio-blk-pci,drive=hd \
+  -netdev user,id=mynet \
+  -device virtio-net-pci,netdev=mynet \
+  -nographic
+```
+
+## Run Archlinux
+
+```bash
+wget -c http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz
+```
+
+## Create custom images
+
+```
+
+```
+
+### Create kernel
+
+```
+
+```
+
+### Create initrd or rootfs
+
+find . -print0 | cpio --null -ov --format=newc > ../initramfs.cpio
+zstd initramfs.cpio
+
+List content of cpio 
+
+lsinitcpio initramfs.cpio
+
+
+### Unpack initrd
+
+## Run virt 
+
+Qemu contains configuration to run non existent machine called virt that suppose to be run with virtual machines. 
+
+```bash
+```
+
+
+## Under ArchLinux
+
+Install all qemu packages with 
+
+```bash
+pacman -S qemu-full
+```
+
+
+
+
+
+## Links
+1. [/writeup/qemu_usage.md](/writeup/qemu_usage.md)  
+2. [https://www.qemu.org/docs/master/system/target-arm.html](https://www.qemu.org/docs/master/system/target-arm.html)  
+3. [https://futurewei-cloud.github.io/ARM-Datacenter/qemu/how-to-launch-aarch64-vm/](https://futurewei-cloud.github.io/ARM-Datacenter/qemu/how-to-launch-aarch64-vm/)  
+4. [https://wiki.debian.org/Arm64Qemu](https://wiki.debian.org/Arm64Qemu)  
+5. [https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4](https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4)  
+6. [https://medium.com/@kiky.tokamuro/creating-initramfs-5cca9b524b5a](https://medium.com/@kiky.tokamuro/creating-initramfs-5cca9b524b5a)  
+7. [https://translatedcode.wordpress.com/2017/07/24/installing-debian-on-qemus-64-bit-arm-virt-board/](https://translatedcode.wordpress.com/2017/07/24/installing-debian-on-qemus-64-bit-arm-virt-board/)  
+8. [https://archlinuxarm.org/platforms/armv8/generic](https://archlinuxarm.org/platforms/armv8/generic)  
+9. [https://github.com/niw/TinyLinux](https://github.com/niw/TinyLinux)  
+10. [https://cs4118.github.io/dev-guides/debian-kernel-compilation.html](https://cs4118.github.io/dev-guides/debian-kernel-compilation.html)  
+11. [https://developer.ibm.com/articles/l-initrd/](https://developer.ibm.com/articles/l-initrd/)  
+12. [https://wiki.archlinux.org/title/mkinitcpio](https://wiki.archlinux.org/title/mkinitcpio)  
+13. https://www.ibm.com/docs/en/zos/2.4.0?topic=codes-exit-status-usrsbininit
+14. https://access.redhat.com/solutions/24029  
+15. [http://phwl.org/2022/qemu-aarch64-debian/](http://phwl.org/2022/qemu-aarch64-debian/)
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