Don’t forget to use sync command to save changes!
First of all change jumpers to boot from nand flash. (First page of the schematic pdf, check https://enthru.net/?p=2965).
Press any key in uart terminal while booting and enter following commands to boot system in single user:
nand read 0x2000000 0x1100000 ${kernel_size}
nand read 0x3000000 0x1020000 ${devicetree_size}
setenv bootargs 'noinitrd mem=496M console=ttyPS0,115200 root=ubi0:rootfs ubi.mtd=1 rootfstype=ubifs rw rootwait init=/bin/sh'
bootm 0x2000000 - 0x3000000
Some boards have 1Gb memory instead of 512Mb so instead of 3d command use this one or it will be stuck on "booting kernel":
setenv bootargs 'noinitrd mem=1008M console=ttyPS0,115200 root=ubi0:rootfs ubi.mtd=1 rootfstype=ubifs rw rootwait init=/bin/sh'
Change root password using command:
passwd
Remove bitminer software from autostart:
cd /etc/rcS.d/
rm S100monitor-ipsig.sh S37bitmainer_setup.sh S50avahi S60lighttpd S70bmminer.sh S70monitor-recobtn S80agent.sh S81agent-monitor.sh
Some startup files may be missed on some systems, so just ignore error if some of them not found.
Remove following lines from /etc/inittab or remove those files specified in lines:
dcdc:2345:respawn:/sbin/monitorcg
cphy:2345:once:/sbin/check_phy.sh
rrst:2345:once:/sbin/reset.sh
Command to remove files:
rm /sbin/monitorcg /sbin/check_phy.sh /sbin/reset.sh
Allow root user to login from uart (not neccesarry) commenting this line in file /etc/pam.d/login:
auth [success=ok ignore=ignore user_unknown=ignore default=die] pam_securetty.so
Copy bitstream, server file and start script to sd card (unarchive zip):
Copy bitstream, server file and start script from sd card to board:
mkdir /mnt/flash
cd /mnt/flash
mount /dev/mmcblk0p1 /mnt/flash
cp * /home/root/
Change start script permissions to allow to run it:
chmod 755 /home/root/start.sh
To enable autostart: (don’t forget that it hangs system without external generator):
ln -s /home/root/start.sh /etc/rcS.d/S60start.sh