Boot From TF-SD
setenv fdtfile bcm2709-rpi-2-b.dtb
mmc dev 0
fatload mmc 0:1 ${kernel_addr_r} zImage
fatload mmc 0:1 ${fdt_addr_r} bcm2709-rpi-2-b.dtb
setenv bootargs earlyprintk console=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
bootz ${kernel_addr_r} - ${fdt_addr_r}
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