diff --git a/.gitignore b/.gitignore
index f51474288..ad268dce5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,11 @@
 
 *.o
 *.mod
+
+*.cmd
+
+Module.symvers
+modules.order
+
+output/
+_install/
diff --git a/01-Char/Makefile b/01-Char/Makefile
index 67b1a6f9d..e768b2077 100644
--- a/01-Char/Makefile
+++ b/01-Char/Makefile
@@ -1,25 +1,51 @@
+# All Right Reserved.
+# Author       : gaoyang3513@outlook.com
+# Version      : V1.0.0  202x.01.01
+# Description  :
+# Note         :
+
+# ---------------------------------------------------------------------------
+# Path information
+LOCAL_DIR   := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+
+# Subdirectory
+
+# Output directories
+OUTPUT_DIR  ?= $(LOCAL_DIR)/output
+INSTALL_DIR ?= $(LOCAL_DIR)/_install
+
+# ---------------------------------------------------------------------------
+# Variables
+MULTI_CORES ?= $(shell grep -c ^processor /proc/cpuinfo)
+
+# ---------------------------------------------------------------------------
+# Compile configure
+
+# ---------------------------------------------------------------------------
+# Source and oject files
 ifneq ($(KERNELRELEASE),)
 
 obj-m := char_static.o
 
+# ---------------------------------------------------------------------------
+# Targets
 else # KERNELRELEASE
 
 ifneq ($(filter $(BOARD),mikv-Duo),)
-KERNELDIR ?= ${HOME}/Source/10-CV1800/01-MilkDuo/02-Project/SDK_CV1800_BR2/linux_5.10/build/cv1800b_milkv_duo_sd
-ROOTFS    ?= ${HOME}/nfs/rootfs
-else ifneq ($(filter $(ARCH),arm64),)
-KERNELDIR ?= ${HOME}/Source/04-RK3568/02-Projects/SDK_RK3568_Linux_LBCat2/kernel
-ROOTFS    ?= ${HOME}/nfs/rootfs
+KERNELDIR := ${HOME}/Source/10-CV1800/01-MilkDuo/02-Project/SDK_CV1800_BR2/linux_5.10/build/cv1800b_milkv_duo_sd
+ROOTFS    := ${HOME}/nfs/rootfs
 else
 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
 endif
 
-PWD := $(shell pwd)
+.PHONY:  all clean init
+
+all:
+	@$(MAKE) -C $(KERNELDIR) M=$(PWD) modules -j$(MULTI_CORES);
+
+install:
+	@$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install INSTALL_MOD_PATH=$(INSTALL_DIR)
 
-modules:
-	@$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
-modules_install:
-	@$(MAKE) -C $(KERNELDIR) M=$(PWD) INSTALL_MOD_PATH=$(ROOTFS) modules_install
 clean:
 	@rm -rf *.o *.ko .*.cmd *.mod* modules.order Module.symvers .tmp_versions
 
diff --git a/Makefile b/Makefile
new file mode 100644
index 000000000..891e7f287
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,64 @@
+# All Right Reserved.
+# Author       : gaoyang3513@outlook.com
+# Version      : V1.0.0  202x.01.01
+# Description  :
+# Note         :
+
+# ---------------------------------------------------------------------------
+# Path information
+LOCAL_DIR   := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+
+# Subdirectory
+MODEL_CHAR  := $(LOCAL_DIR)/01-Char
+
+# Output directories
+OUTPUT_DIR  ?= $(LOCAL_DIR)/output
+INSTALL_DIR ?= $(LOCAL_DIR)/_install
+
+# ---------------------------------------------------------------------------
+# Variables
+MULTI_CORES ?= $(shell grep -c ^processor /proc/cpuinfo)
+
+SUB_DIRS := 01-Char/
+
+# ---------------------------------------------------------------------------
+# Compile configure
+
+# ---------------------------------------------------------------------------
+# Source and oject files
+ifneq ($(KERNELRELEASE),)
+
+obj-y := $(SUB_DIRS)
+
+# ---------------------------------------------------------------------------
+# Targets
+else # KERNELRELEASE
+
+ifneq ($(filter $(BOARD),mikv-Duo),)
+KERNELDIR := ${HOME}/Source/10-CV1800/01-MilkDuo/02-Project/SDK_CV1800_BR2/linux_5.10/build/cv1800b_milkv_duo_sd
+ROOTFS    := ${HOME}/nfs/rootfs
+else
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+endif
+
+.PHONY:  all clean init
+
+all: init
+	@for sub in $(SUB_DIRS); do \
+	        $(MAKE) -C $${sub}; \
+	        $(MAKE) -C $${sub} install INSTALL_DIR=$(OUTPUT_DIR); \
+	done;
+
+clean:
+	@for sub in $(SUB_DIRS); do \
+	        $(MAKE) -C $${sub} clean; \
+	done;
+
+install:
+	@mkdir -p $(INSTALL_DIR);
+	@cp -arf $(OUTPUT_DIR)/. $(INSTALL_DIR);
+
+init:
+	@mkdir -p $(OUTPUT_DIR);
+
+endif # KERNELRELEASE
\ No newline at end of file