As I do not have sd card，i use tftp nfs to boot kernel and mount rootfs.My u-boot command:
=>setenv bootcmd 'tftp 0x80000000 Image-j7-evm.bin;tftp 0x89000000 k3-j721e-common-proc-board.dtb;booti 0x80000000 - 0x89000000'
root@j7-evm:/opt/vision_apps# source ./vision_apps_init.sh
root@j7-evm:/opt/vision_apps# APP_LOG: Mapping 0xac000000 ...
APP_LOG: Mapped 0xac000000 -> (nil) of size 262144 bytes
APP_LOG: ERROR: Unable to map memory @ 0xac000000 of size 262144 bytes !!!
my tftp command memmap is wrong?or I do not tftp other dtb0 file?
