autodetect arm64 in the build script

.github/workflows/build-image.yaml

@@ -9,7 +9,7 @@ jobs:
 
     strategy: 
       matrix:
-        board: [dedede, octopus, coral, grunt, nissa, zork]
+        board: [dedede, octopus, coral, grunt, nissa, zork, corsola, jacuzzi]
 
     runs-on: ubuntu-latest
     steps:

README.md

@@ -2,6 +2,10 @@
 
 Shimboot is a collection of scripts for patching a Chrome OS RMA shim to serve as a bootloader for a standard Linux distribution. It allows you to boot a full desktop Debian install on a Chromebook, without needing to unenroll it or modify the firmware.
 
+| <img src="https://raw.githubusercontent.com/ading2210/shimboot/main/website/assets/shimboot_demo_1.jpg" alt="Shimboot running on a HP Chromebook 11 G9 EE." width="400"/> | <img src="https://raw.githubusercontent.com/ading2210/shimboot/main/website/assets/shimboot_demo_2.jpg" alt="Shimboot running on an Acer Chromebook 311 C722." width="400"/> |  
+| ----- | ----- |
+| Shimboot with KDE on a HP Chromebook 11 G9 EE | Shimboot with XFCE on an Acer Chromebook 311 C722 |
+
 ## Features:
 - Run a full Debian installation on a Chromebook
 - Does not modify the firmware
@@ -62,7 +66,6 @@ On all devices, the following features will not work:
 - Transparent disk compression
 - Full disk encryption
 - Support for more distros (Ubuntu and Arch maybe)
-- Support for ARM based Chromebooks (see [issue #8](https://github.com/ading2210/shimboot/issues/8))
 - Eliminate binwalk dependency
 - Get audio to work on dedede
 - Get kexec working
@@ -76,6 +79,7 @@ PRs and contributions are welcome to help implement these features.
   - WSL2 is supported if you are on Windows
   - Github Codespaces is not supported at the moment
 - A USB drive that is at least 8GB in size
+  - Cheap USB 2.0 drives typically won't work well due to their slow speeds
 - At least 20GB of free disk space
 
 ### Build Instructions:
@@ -139,6 +143,8 @@ echo "MESA_LOADER_DRIVER_OVERRIDE=i965" | sudo tee -a /etc/environment
 ```
 You may need to change `i965` to `i915` (or `r100`/`r200` for AMD hardware), depending on what GPU you have.
 
+For ARM Chromebooks, you may have to tweak the [Xorg configuration](https://xkcd.com/963/) instead.
+
 #### Can the rootfs be compressed to save space?
 Compressing the Debian rootfs with a squashfs is supported, and you can do this by running the regular Debian rootfs through `./build_squashfs.sh`. For example:
 ```bash

bootloader/bin/bootstrap.sh

@@ -94,7 +94,7 @@ move_mounts() {
 
 print_license() {
   cat << EOF 
-Shimboot v1.0.2
+Shimboot v1.1.0
 
 ading2210/shimboot: Boot desktop Linux from a Chrome OS RMA shim.
 Copyright (C) 2023 ading2210

build_complete.sh

@@ -19,19 +19,35 @@ assert_root
 assert_args "$1"
 parse_args "$@"
 
+base_dir="$(realpath -m  $(dirname "$0"))"
+board="$1"
+
 compress_img="${args['compress_img']}"
 rootfs_dir="${args['rootfs_dir']}"
 quiet="${args['quiet']}"
 desktop="${args['desktop']-'xfce'}"
 data_dir="${args['data_dir']}"
-arch="${args['arch']-'amd64'}"
+arch="${args['arch']-amd64}"
+
+arm_boards="
+  corsola hana jacuzzi kukui strongbad nyan-big kevin bob
+  veyron-speedy veyron-jerry veyron-minnie scarlet elm
+  kukui peach-pi peach-pit stumpy daisy-spring
+"
+if grep -q "$board" <<< "$arm_boards"; then
+  echo "automatically detected arm64 device name"
+  arch="arm64"
+fi
 
 needed_deps="wget python3 unzip zip git debootstrap cpio binwalk pcregrep cgpt mkfs.ext4 mkfs.ext2 fdisk rsync depmod findmnt lz4"
 if [ "$(check_deps "$needed_deps")" ]; then
   #install deps automatically on debian and ubuntu
   if [ -f "/etc/debian_version" ]; then
     echo "attempting to install build deps"
-    apt-get install wget python3-all unzip zip debootstrap cpio binwalk pcregrep cgpt rsync kmod pv -y
+    apt-get install wget python3-all unzip zip debootstrap cpio binwalk pcregrep cgpt rsync kmod pv lz4 -y
+    if [ "$arch" = "arm64" ]; then
+      apt-get install qemu-user-static binfmt-support -y
+    fi
   fi
   assert_deps "$needed_deps"
 fi
@@ -45,8 +61,6 @@ sigint_handler() {
 }
 trap sigint_handler SIGINT
 
-base_dir="$(realpath -m  $(dirname "$0"))"
-board="$1"
 shim_url="https://dl.darkn.bio/api/raw/?path=/SH1mmer/$board.zip"
 boards_url="https://chromiumdash.appspot.com/cros/fetch_serving_builds?deviceCategory=ChromeOS"
 

build_rootfs.sh

@@ -31,7 +31,7 @@ parse_args "$@"
 rootfs_dir=$(realpath -m "${1}")
 release_name="${2}"
 packages="${args['custom_packages']-'task-xfce-desktop'}"
-arch="${args['arch']-'amd64'}"
+arch="${args['arch']-amd64}"
 chroot_mounts="proc sys dev run"
 
 mkdir -p $rootfs_dir