MCU_CACHE_OFFSET
icache_offset = dev->firmware.paddr - MCU_CACHE_OFFSET;
(dev->firmware.paddr & 0xffffffff00000000ULL) - MCU_CACHE_OFFSET;
if (upper_32_bits(phys) || (lower_32_bits(phys) & MCU_CACHE_OFFSET))
return lower_32_bits(phys) | MCU_CACHE_OFFSET;