CACHE_ENABLED 怎么启用呢

#ifdef CACHE_ENABLED
#ifdef xdc_target__isaCompatible_64P

    Memory_cacheWbInv(encodedBuf, encodedBufSize);
#else
#error Unvalidated config - add appropriate fread-related cache maintenance
#endif
    /* Per DMA Rule 7, our output buffer cache lines must be cleaned */
    Memory_cacheInv(outBuf, outBufSize);
#endif