Hello. I'm trying to find an easier way to the problem that you can read here :
https://github.com/mobile-virt/u-boot-chromebook-xe303c12/tree/chromebook/xen#starting-a-domu-guest where *Chuck* says : 1. Create the u-boot shell commands that will be used to boot Xen and dom0. Create a file in /home/user (or any other directory) named bootxen.source with these contents : mmc dev 1 && mmc rescan 1 ext2load mmc 1:3 0x42000000 zImage-6.1.61-stb-xen-cbe+ ext2load mmc 1:3 0x51000000 xen-4.17-armhf-armmp-0x51004000.ub ext2load mmc 1:3 0x5ffec000 exynos5250-snow-6.1.61-stb-xen-cbe+.dtb fdt addr 0x5ffec000 fdt resize 1024 fdt set /chosen \#address-cells <0x2> fdt set /chosen \#size-cells <0x2> fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=serial0 dom0_mem=1G dom0_max_vcpus=2 bootscrub=0 vwfi=native" fdt mknod /chosen dom0 fdt set /chosen/dom0 compatible "xen,linux-zimage" "xen,multiboot-module" "multiboot,module" fdt set /chosen/dom0 reg <0x0 0x42000000 0x0 0x7D7200 > fdt set /chosen xen,dom0-bootargs "console=tty1 root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" bootm 0x51000000 - 0x5ffec000 The hex value 0x7D7200 is the size of the zImage-6.1.61-stb-xen-cbe+ file, and that value is computed from the uboot-script-gen script available from here : https://gitlab.com/ViryaOS/imagebuilder This is the interesting point : *Please note that most of the other values in the script generated by the ViryaOS uboot-script-gen do not work correctly with the Chromebook Snow*, but the script does correctly calculate the size of the dom0 Linux kernel image. Some time ago Stefano suggested to put the values below for MEMORY_START and MEMORY_END inside the xen-config file : nano xen-config file : MEMORY_START="0x41e00000" MEMORY_END="0x60000000" LOAD_CMD="ext2load mmc 1:3" BOOT_CMD="bootm" DEVICE_TREE="exynos5250-snow.dtb" XEN="xen-4.17-armhf" XEN_CMD="console=dtuart dtuart=serial0 dom0_mem=768M dom0_max_vcpus=2 bootscrub=0 vwfi=native sched=null" DOM0_KERNEL="zImage-6.6.0-xen-dma-mapping" DOM0_CMD="console=tty earlycon=xen earlyprintk=xen root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" UBOOT_SOURCE="xen.source" bash ./uboot-script-gen -c xen-config -d . Image Name: Created: Thu Nov 2 20:59:24 2023 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 884744 Bytes = 864.01 KiB = 0.84 MiB Load Address: 42c00000 Entry Point: 42c00000 Generated uboot script xen.scr, to be loaded at address 0x42000000: ext2load mmc 1:3 0x42000000 xen.scr; source 0x42000000 and I tried to boot Xen and Linux 6.6 as dom0 : SMDK5250 # mmc dev 1 SMDK5250 # ext2load mmc 1:3 0x42000000 xen.scr; source 0x42000000 but it did not work : it reboots on the verification screen. -- Mario.
