EC200U QuecOpen ql_embed_nor_flash_app_init() Not Run In SDK?

I tried to run this function ql_embed_nor_flash_app_init in ql_init.c but it didn’t work.

Can anyone help me ?
and can not be found this Document PDF !

First you should turn on the embedded flash feature , where is "components\ql-config\build*The module type*\8915DM_cat1_open\target.config " add “CONFIG_QUEC_PROJECT_FEATURE_EMBED_NOR_FLASH=y” to open embedded flash feature 。
Please refer to the attachment for the use of embedded flash 。