Optimization for booting OpenWrt

IMG/cpio/ventoy/loop/openwrt/ventoy-disk.sh

@@ -27,6 +27,59 @@ vtlog "####### $0 $* ########"
 
 VTPATH_OLD=$PATH; PATH=$BUSYBOX_PATH:$VTOY_PATH/tool:$PATH
 
+
+check_insmod() {
+    if [ -f "$1" ]; then
+        vtlog "insmod $1"
+        insmod "$1" >> $VTOY_PATH/log 2>&1
+    else
+        vtlog "$1 not exist"
+    fi
+}
+
+wrt_insmod() {
+    kbit=$1
+    kv=$(uname -r)
+    
+    vtlog "insmod $kv $kbit"
+    
+    check_insmod /ventoy_openwrt/$kv/$kbit/dax.ko
+    check_insmod /ventoy_openwrt/$kv/$kbit/dm-mod.ko    
+}
+
+insmod_dm_mod() {
+    if grep -q "device-mapper" /proc/devices; then
+        vtlog "device-mapper enabled by system 0"
+        return
+    fi
+    
+    check_insmod /ventoy/modules/dax.ko
+    check_insmod /ventoy/modules/dm-mod.ko
+
+    if grep -q "device-mapper" /proc/devices; then
+        vtlog "device-mapper enabled by system 1"
+        return
+    fi
+    
+    if [ -f /ventoy_openwrt.xz ]; then
+        tar xf /ventoy_openwrt.xz -C /
+        rm -f  /ventoy_openwrt.xz
+    fi
+
+    if uname -m | egrep -q "amd64|x86_64"; then
+        wrt_insmod 64
+    else
+        wrt_insmod generic    
+        if lsmod | grep -q 'dm-mod'; then
+            vterr "insmod generic failed"
+        else
+            wrt_insmod legacy
+        fi
+    fi
+}
+
+insmod_dm_mod
+
 for i in $(ls /sys/class/block/); do
     if ! [ -e /dev/$i ]; then
         blkdev_num=$(sed 's/:/ /g' /sys/class/block/$i/dev)