AMD_NB_CFG_WDOGTMRBASESEL_MASK
uintptr_t basefld = (val & AMD_NB_CFG_WDOGTMRBASESEL_MASK);
val &= ~AMD_NB_CFG_WDOGTMRBASESEL_MASK;
val &= ~AMD_NB_CFG_WDOGTMRBASESEL_MASK;
val &= ~(AMD_NB_CFG_WDOGTMRBASESEL_MASK |
val &= ~(AMD_NB_CFG_WDOGTMRBASESEL_MASK |