1 files changed, 69 insertions, 0 deletions
diff --git a/vm.sh b/vm.sh
new file mode 100755
index 0000000..04f7027
--- /dev/null
+++ b/vm.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+
+set -xe
+
+function run
+{
+    # 32 bit does NOT work, even if the kernel is obviously compiled
+    # for 32 bit, the binary could be broken, but I didn't manage to
+    # build qemu from source,
+    # pretty sure that riscv32-unknown-linux-gnu- works fine
+    qemu-system-riscv64 \
+        -machine virt \
+		-kernel "$BIN/$KERNEL" \
+		-initrd "$BIN/$INITFS" \
+	    -append "console=ttyS0" -nographic \
+        -monitor none \
+        -serial stdio
+}
+
+function initramfs
+{
+    IMG="$(pwd)/$BIN/$INITFS"
+    DIR="${IMG%.*}"
+    mkdir -p $DIR
+    
+    # copy the program
+    cp $1 "$DIR/init"
+
+    # make image and delete folder
+    (cd $DIR; find . | cpio -H newc -o | gzip > $IMG)
+    rm -rf $DIR
+}
+
+function kernel
+{   
+    DIR="${KERNEL%.*}"
+    ARCHIVE="$DIR.tar.xz"
+    
+    BACKUP="backup"
+    mkdir -p $BACKUP
+
+    if [[ -n $(find backup/ -type f -name "$KERNEL") ]]; then
+        cp $BACKUP/$KERNEL $BIN/
+        exit 0
+    fi
+
+    if [[ -n $(find backup/ -type f -name "$ARCHIVE") ]]; then
+        cp $BACKUP/$ARCHIVE $BIN/
+    else
+        wget -P $BIN https://cdn.kernel.org/pub/linux/kernel/v5.x/$ARCHIVE    
+        cp $BIN/$ARCHIVE $BACKUP/
+    fi
+    
+    tar -xf $BIN/$ARCHIVE -C $BIN/
+    rm $BIN/$ARCHIVE
+    
+    # TOOLCHAIN in the Makefile
+    cd $BIN/$DIR
+    make ARCH=riscv CROSS_COMPILE=$TOOLCHAIN defconfig
+    make ARCH=riscv CROSS_COMPILE=$TOOLCHAIN -j $(nproc)
+    cd ../../
+    
+    cp $BIN/$DIR/arch/riscv/boot/Image $BIN/$KERNEL
+    cp $BIN/$KERNEL $BACKUP
+    
+    rm -rf $BIN/$DIR
+}
+
+$1 $2