https://whycan.com/t_6502.html

Tina351
/opt/tina351/sdk/build/image.mk
./build/image.mk:define Image/mkfs/ext4
./build/image.mk: $(STAGING_DIR_HOST)/bin/mkfs.ext4 -b $
./build/aw-upgrade.mk: -mv $(1)/usr/sbin/mkfs.ext4 $(1)/sbin/

https://whycan.com/t_4008.html