Comments (1)
Hi,
In order to have CI20 booting from SD card you should do following:
Build u-boot from source as instructed here:
https://www.elinux.org/CI20_Dev_Zone
Download RFS from one of following locations:
http://mipscreator.mips.com/CI20/images/default_NAND/Debian8_20160602/rootfs_2016_06_02.tar
http://mipscreator.mips.com/CI20/images/default_NAND/Debian8_20150909/rootfs_2015_09_09.tar
Burn u-boot to SD card
- Determine the device name of the SD card:
run lsblk command before sd card is inserted, run lsblk command after sd card is inserted, see the difference.
/dev/sdd is used in my case. - Unmount sd card
sudo umount $SD_MOUNT_PATH
- Burn uboot
sudo sfdisk /dev/sdd -uS -L << EOF
4096,,L
EOF
sudo mkfs.ext4 /dev/sdd1
sudo dd if=/dev/zero of=/dev/sdd bs=1K seek=526 count=32
sudo dd if=./CI20_u-boot/spl/u-boot-spl.bin of=/dev/sdd obs=512 seek=1
sudo dd if=./CI20_u-boot/u-boot.img of=/dev/sdd obs=1K seek=14
sync
Unpack RFS to SD card
mount SD card (/dev/sdd1)
sudo tar -xzpf ./rootfs_2016_06_02.tar -C $SD_MOUNT_PATH
sudo sync
Boot CI20
- Insert SD card
- Make sure that JP3 is set to boot from SD card (2,3)
- Power on the board
from ci20_u-boot.
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from ci20_u-boot.