env.txt

earlyprintk=sunxi-uart,0x05000000
initcall_debug=0
console=ttyS0,115200
rootfstype=ext4
nand_root=/dev/nand0p4
mmc_root=/dev/mmcblk0p4
init=/sbin/init
loglevel=4
selinux=0
cma=64M
mac=
wifi_mac=
bt_mac=
specialstr=
keybox_list=hdcpkey,widevine
setargs_nand=setenv bootargs earlyprintk=${earlyprintk} initcall_debug=${initcall_debug} console=${console} loglevel=${loglevel} rootfstype=${rootfstype} root=${nand_root} init=${init} partitions=${partitions} cma=${cma} snum=${snum} mac_addr=${mac} wifi_mac=${wifi_mac} bt_mac=${bt_mac} selinux=${selinux} specialstr=${specialstr} gpt=1
setargs_mmc=setenv  bootargs earlyprintk=${earlyprintk} initcall_debug=${initcall_debug} console=${console} loglevel=${loglevel} rootfstype=${rootfstype} root=${mmc_root} init=${init} partitions=${partitions} cma=${cma} snum=${snum} mac_addr=${mac} wifi_mac=${wifi_mac} bt_mac=${bt_mac} selinux=${selinux} specialstr=${specialstr} gpt=1
boot_normal=sunxi_flash read 45000000 boot;bootm 45000000
boot_recovery=sunxi_flash read 45000000 recovery;bootm 45000000
boot_fastboot=fastboot
recovery_key_value_max=0x13
recovery_key_value_min=0x10
fastboot_key_value_max=0x8
fastboot_key_value_min=0x2
bootdelay=0
bootcmd=run setargs_nand boot_normal