Mode 1: Boot from a TF Card, Load Ramdisk
Filesystem Mode 2: Boot from a TF Card, Load Ext4 Filesystem Mode 3: Boot from the QSPI Flash, Load Ext4 Filesystem of eMMC Mode 3 is the default loading mode. The boot mechanisms and corresponding program steps of above three loading modes are described in the following
sections.
JP1 JP2 boot
sequences :
JP1 Close JP2 Open:
QSPI->USB1->MMC0->USB0 Open Close MMC0->MMC1->USB1->USB0 Close Close NAND->USB1->MMC0->USB0
