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By default, the small core enables D-Cache without ensuring cache coherence. Therefore, when using shared memory, inconsistencies can occur in the data read by the small core and the big core. Solution: Migrate cache-related functions from the official duo-buildroot-sdk library to implement cache-related operations in rthw.h. This allows you to either disable D-Cache or call the flush_dcache_range function before reading and after writing for synchronization. It is recommended to use the flush_dcache_range function, as disabling D-Cache can have a significant performance impact. Signed-off-by: zdtyuiop4444 <ign7798540@gmail.com>