STM_FLASH_ALIGNED_OFF
inbound_region.addr = STM_FLASH_BASE_ADDR - STM_FLASH_ALIGNED_OFF;
bar_addr_high = RREG32(mmPCIE_DBI_BAR1_REG + STM_FLASH_ALIGNED_OFF);
bar_addr_low = RREG32(mmPCIE_DBI_BAR0_REG + STM_FLASH_ALIGNED_OFF) & ~0xF;