Help FG50E unable to open an initial console

Hi. Now I'm trying to install to Fortigate FG50E with custom firmware as tftp.

and stuck with this result as serial console.

[   15.026970] mv88e6085 f1072004.mdio-mii:02: configuring for fixed/rgmii-id link mode
[   15.122908] mv88e6085 f1072004.mdio-mii:02: Link is Up - 1Gbps/Full - flow control off
[   15.228774] mv88e6085 f1072004.mdio-mii:02 lan5 (uninitialized): PHY [mv88e6xxx-1:00] driver [Marvell 88E1540] (irq=60)
[   15.458246] mv88e6085 f1072004.mdio-mii:02 lan4 (uninitialized): PHY [mv88e6xxx-1:01] driver [Marvell 88E1540] (irq=61)
[   15.688241] mv88e6085 f1072004.mdio-mii:02 lan3 (uninitialized): PHY [mv88e6xxx-1:02] driver [Marvell 88E1540] (irq=62)
[   15.898762] mv88e6085 f1072004.mdio-mii:02 lan2 (uninitialized): PHY [mv88e6xxx-1:03] driver [Marvell 88E1540] (irq=63)
[   16.128240] mv88e6085 f1072004.mdio-mii:02 lan1 (uninitialized): PHY [mv88e6xxx-1:04] driver [Marvell 88E1540] (irq=64)
[   16.264080] device eth0 entered promiscuous mode
[   16.319434] DSA: tree 0 setup
[   16.355318] Warning: unable to open an initial console.
[   16.421116] Freeing unused kernel image (initmem) memory: 6144K
[   16.514847] Run /init as init process

What is that cause ?

lrwxrwxrwx 1 tftp 105 Mar 2 13:39 image.out -> /home/hogehoge/openwrt/bin/targets/mvebu/cortexa9/openwrt-mvebu-cortexa9-fortinet_fg-50e-initramfs-kernel.bin

WAN1 and WAN2 looks indicated with no problem.

serial port setting or related one?

libgcc was marked and installed too ..

Thank you all.

I already done by myself.

Minimum requirements configuration is works well.

Maybe some too much configure makes bad situation.