The number of boards vs. the number of SOCs:

u-boot-2018.05$ tools/genboardscfg.py
u-boot-2018.05$ wc -l boards.cfg
1249 boards.cfg
u-boot-2018.05$ cat boards.cfg |tail +7 |awk '{print $4}' |sort |uniq  |grep -v '^$' |wc -l # 4 is the "SOC" column
86