https://blog.csdn.net/rikeyone/article/details/101786717
https://blog.csdn.net/modianwutong/article/details/76626629
https://blog.csdn.net/jiangwei0512/article/details/83685694
cache as ram
https://blog.csdn.net/caimouse/article/details/1473199
edk fdf文件布局
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