uEnv-SD.txt

console=ttyS0,115200n8
overlays=pcdev0.dtbo pcdev1.dtbo
dtb=am335x-boneblack.dtb
dtbopath=/lib/firmware
ovenvsetup=setenv fdtaddr 0x87f00000;setenv fdtovaddr 0x87fc0000;
fdtload=load mmc 0:1 ${fdtaddr} ${dtb};
fdtcmd=fdt addr $fdtaddr;fdt resize 8192;
fdtovload=for i in ${overlays};do echo Applying overlay...;load mmc 0:2 ${fdtovaddr} ${dtbopath}/${i};fdt apply $fdtovaddr;done
bootsettings=setenv bootargs console=$console root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait earlyprintk mem=512M
mmcboot=run ovenvsetup; run fdtload; run fdtcmd; run fdtovload; echo Booting from microSD ...; setenv autoload no ; load mmc 0:1 ${loadaddr} uImage ; run bootsettings ; bootm ${loadaddr} - ${fdtaddr}
uenvcmd=run mmcboot