root@am437x-evm:~# echo 'am437x-pru1_1-fw' > /sys/class/remoteproc/remoteproc4/firmware
root@am437x-evm:~# echo 'start' > /sys/class/remoteproc/remoteproc4/state
[ 377.868249] remoteproc remoteproc4: powering up 54478000.pru
[ 377.888033] remoteproc remoteproc4: Booting fw image am437x-pru1_1-fw, size 82656
[ 377.900464] remoteproc4#vdev0buffer: registered virtio0 (type 7)
[ 377.907088] remoteproc remoteproc4: remote processor 54478000.pru is now up
root@am437x-evm:~# [ 377.943669] virtio_rpmsg_bus virtio0: creating channel rpmsg-pru addr 0x21
[ 377.951593] virtio_rpmsg_bus virtio0: rpmsg host is online
[ 378.019887] rpmsg_pru virtio0.rpmsg-pru.-1.33: new rpmsg_pru device: /dev/rpmsg_pru33
root@am437x-evm:~#
root@am437x-evm:~# echo 'ethercat_slave_full_AM437x_arm.out' > /sys/class/remoteproc/remoteproc3/firmware
root@am437x-evm:~# echo 'start' > /sys/class/remoteproc/remoteproc3/state
[ 502.768228] remoteproc remoteproc3: powering up 54474000.pru
[ 502.957138] remoteproc remoteproc3: Booting fw image ethercat_slave_full_AM437x_arm.out, size 2889212
[ 502.966723] remoteproc remoteproc3: bad phdr da 0x80000000 mem 0x448d0
[ 502.975808] remoteproc remoteproc3: Failed to load program segments: -22
[ 502.984443] remoteproc remoteproc3: Boot failed: -22
-sh: echo: write error: Invalid argument
加载编译的固件，启动不起来。需要修改什么？
