I know it's uboot problem not armbian, but when I compile it with option CONFIG_BOOTDELAY=5 it still boots with 1s delay. here is my Cubieboard_defconfig
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_OHCI_HCD=y
CONFIG_VIDEO_DE2=n
CONFIG_VIDEO_LCD_MODE="x:1024,y:768,depth:18,pclk_khz:100000,le:480,ri:260,up:6,lo:16,hs:320,vs:10,sync:3,vmode:0"
CONFIG_VIDEO_LCD_PANEL_LVDS=y
CONFIG_VIDEO_LCD_POWER="PH8"
CONFIG_VIDEO_LCD_BL_EN="PH7"
CONFIG_VIDEO_LCD_BL_PWM="PB2"
CONFIG_USB=y
CONFIG_CMD_USB=y
CONFIG_USB_UHCI=y
CONFIG_DM_USB=y
CONFIG_USB_KEYBOARD=y
CONFIG_USB_HOST=y
CONFIG_DM_KEYBOARD=y
CONFIG_BOOTDELAY=5