image sdcard.img { hdimage { gpt = "true" } partition fsbl1 { image = "u-boot-spl.stm32" size = 256K } partition fsbl2 { image = "u-boot-spl.stm32" size = 256K } partition ssbl { image = "u-boot.img" size = 2M } partition rootfs { image = "rootfs.ext4" bootable = "yes" } }