打开 根目录下的 STM32H7B0VBTx_FLASH.ld
第77行的:__EXTFLASH_START__ = 0x90000000 + __EXTFLASH_OFFSET__;
替换为:__EXTFLASH_BASE__ = 0x90000000; /* Beginning of addressable extflash addresses */
__EXTFLASH_START__ = __EXTFLASH_BASE__ + __EXTFLASH_OFFSET__; /* Beginning of where we're going to store emulator and rom data */