add uConsole_CM4_v2.0_64bit into wiki

Author: cuu

wiki/How-uConsole-CM4-OS-image-made.md

@@ -158,9 +158,59 @@ sudo losetup -D /dev/loop0
 
 ---
 
-## **Final Notes**
+## **Notes**
 
 - All official uConsole OS images can be found here:  
   [uConsole Images Repository](https://github.com/clockworkpi/uConsole/tree/master/images)
 
-- Happy hacking!
+
+
+
+# uConsole_CM4_v2.0_64bit.img.7z
+Since v2.0, cm4 os image is made by [pi-gen](https://github.com/cuu/pi-gen/tree/uconsole_arm64)
+
+just clone [pi-gen](https://github.com/cuu/pi-gen/tree/uconsole_arm64) repo, branch uconsole_arm64  
+
+run `sudo ./build.sh` in ubuntu linux PC  
+
+
+- kernel source: https://github.com/cuu/ClockworkPi-linux/commit/9a1e3adc9d1431889f62e633ae791bfc9a6cf535
+here is kernel compiling commands:
+```
+export KERNEL=kernel8
+export ARCH=arm64
+export CROSS_COMPILE=aarch64-linux-gnu-
+
+make bcm2711_defconfig
+
+make -j4
+
+mkdir -p ../modules
+rm -rf ../modules/*
+
+INSTALL_MOD_PATH=../modules make modules_install
+
+mkdir -p ../firmware
+rm -rf ../firmware/*
+mkdir -p ../firmware/overlays
+
+cp arch/arm64/boot/Image ../firmware/$KERNEL.img
+cp arch/arm64/boot/dts/broadcom/*.dtb ../firmware
+cp arch/arm64/boot/dts/overlays/*.dtb* ../firmware/overlays/
+cp arch/arm64/boot/dts/overlays/README ../firmware/overlays/
+
+KERNEL_VER=$(make kernelrelease)
+cp arch/arm64/boot/Image.gz ../vmlinuz-${KERNEL_VER}
+
+cp System.map  ../System.map-${KERNEL_VER}
+cp .config  ../config-${KERNEL_VER}
+
+mkdir -p ../linux-headers-${KERNEL_VER}
+
+make headers_install INSTALL_HDR_PATH=../linux-headers-${KERNEL_VER}
+```
+
+
+
+
+- Happy hacking!