119 lines
3.5 KiB
Bash
119 lines
3.5 KiB
Bash
#!/bin/bash
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IMAGE_ARCH="e2kv6" # possible values are e2k, e2kv4, e2kv5, e2kv6
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IMAGE_VERSION="20240705"
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IMAGE_PATH="/ALTLinux/images/Sisyphus/docker/docker-$IMAGE_VERSION-$IMAGE_ARCH.tar.xz"
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MIRRORS=("http://elbrus.ivk.ru/pub" "http://setwd.ws/altlinux")
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QEMU_BUILD_FLAGS="--disable-werror --disable-pie"
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QEMU_BRANCH="e2k-v8.1.3"
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CHROOT_DIR="chroot-$IMAGE_ARCH"
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BINFMT_REGISTER_FLAGS=""
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# this is taken from qemu's binfmt set up script because I don't want to pollute
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# binfmt_misc with unrelated stuff
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e2k_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xaf\x00'
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e2k_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
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e2k_old_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x31\x00'
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e2k_old_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
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qemu_target_list="e2k e2k_old"
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if ! command -v git > /dev/null; then
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echo "To build qemu-e2k, we need to clone git repository. Install git."
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exit 1
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fi
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if ! command -v xz > /dev/null; then
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echo "To unpack ALTLinux Docker image, we need xz. Install it."
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exit 1
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fi
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if ! command -v wget > /dev/null; then
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echo "To download ALTLinux Docker image, we need wget. Install it."
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exit 1
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fi
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if [ "$(uname -m)" == "e2k" ]; then
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echo "This script is for emulating Elbrus and you're already running on this architecture"
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exit 1
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fi
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echo "WARNING: this script just set ups basic chroot to play with."
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echo "Do not use this in production!\n"
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echo "During installation, you will be asked for root access to properly"
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echo "unpack image and install binfmt_misc rule\n"
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read -p "Did you read and understood the message above? [Yn] " yn
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case $yn in
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[yY|""] ) echo "Continuing..."; ;;
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[nN] ) echo "Exiting"; exit 0;;
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[*] ) echo "Unrecognized answer"; exit 1;;
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esac
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set -x
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git clone https://git.mentality.rip/OpenE2K/qemu-e2k -b $QEMU_BRANCH --depth=1 || exit 2
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pushd qemu-e2k || exit 2
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./configure --target-list=e2k-linux-user --static $QEMU_BUILD_FLAGS || exit 2
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make -j$(nproc) || exit 2
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popd || exit 2
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for i in "${MIRRORS[@]}"; do
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echo -n "Probing mirror $i..."
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if wget -q -O/dev/null "$i"; then
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SELECTED_MIRROR=$i
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echo "OK"
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break;
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else
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echo "BAD"
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fi
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done
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if [ -z "$SELECTED_MIRROR" ]; then
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echo "Can't find working mirror, exiting..."
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exit 2
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fi
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qemu_register_interpreter() {
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echo "Setting $qemu as binfmt interpreter for $cpu"
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qemu_generate_register | sudo tee /proc/sys/fs/binfmt_misc/register || exit 2
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}
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qemu_generate_register() {
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flags="${BINFMT_REGISTER_FLAGS}"
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echo ":qemu-$cpu:M::$magic:$mask:$qemu:$flags"
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}
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wget -Odocker.txz "$SELECTED_MIRROR$IMAGE_PATH"
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mkdir -p $CHROOT_DIR || exit 2
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pushd $CHROOT_DIR
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sudo tar -xJf ../docker.txz || exit 2
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sudo cp ../qemu-e2k/build/qemu-e2k usr/bin || exit 2
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# Change default mirror in case if ivk is unreachable (it's kinda stupid to block non-Russian IP addresses, isn't it?)
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if [ "$SELECTED_MIRROR" != "http://elbrus.ivk.ru/pub" ]; then
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sed "s|http://elbrus.ivk.ru/pub|$SELECTED_MIRROR|g" etc/apt/sources.list.d/ivk.list | sudo tee etc/apt/sources.list.d/mirror.list
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sudo mv etc/apt/sources.list.d/ivk.list etc/apt/sources.list.d/ivk.list.disabled
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fi
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sudo cp /etc/resolv.conf etc/resolv.conf
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for cpu in ${qemu_target_list} ; do
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qemu="/usr/bin/qemu-e2k"
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magic=$(eval echo \$${cpu}_magic)
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mask=$(eval echo \$${cpu}_mask)
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qemu_register_interpreter
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done
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popd || exit 2
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set +x
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echo "All done."
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echo "Keep in mind, it's up to you to set up binfmt_misc so it doesn't get lost between reboots"
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echo "Now you can do 'sudo chroot $CHROOT_DIR /bin/bash' and have some fun!"
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