BCM_NVRAM_GET_BITS
valid = BCM_NVRAM_GET_BITS(hdr.cfg0, BCM_NVRAM_CFG0_CRC);
data->value. _dest = _swap(BCM_NVRAM_GET_BITS( \
bcm_ver = BCM_NVRAM_GET_BITS(hdr.cfg0, BCM_NVRAM_CFG0_VER);