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About this Article
Here we provide a simple way to boot linux from USB OTG port. It's very useful when our system damaged somehow, and we can fix it if we could access to the storeage, e.g. nand, sata, or SD Card.
FEL is a low-level subroutine containing in the BootROM on allwinner devices. It is used for provisioning and recovery of devices using USB. When the chip goes to FEL mode, the chip will be waiting for communication from PC though USB. The primary purpose for FEL is for flashing the NAND with the PC tool LiveSuit. For more detailed please refer to FEL MODE
$ ./usb-boot ./u-boot-spl.bin ./u-boot.bin ./uImage ./script.bin ./initramfs.img fel write 0x2000 ./u-boot-spl.bin fel exe 0x2000 fel write 0x4a000000 ./u-boot.bin fel write 0x41000000 ./bin/ramboot.scr fel write 0x43000000 ./script.bin fel write 0x44000000 ./uImage fel write 0x4c000000 ./initramfs.img fel exe 0x4a000000