GCW Zero
build ubiboot
編譯步驟如下：
$ cd $ wget https://github.com/steward-fu/gcw0/releases/download/v1.0/toolchain.7z $ 7za x toolchain.7z $ sudo cp -a gcw0 /opt $ export PATH=$PATH:/opt/gcw0/usr/bin $ wget https://github.com/steward-fu/gcw0/releases/download/v1.1/ubiboot.7z $ 7za x ubiboot.7z $ cd UBIBoot $ make CONFIG=gcw0 clean $ make CONFIG=gcw0