EMTOP TECHNOLOGY
Copyright © 2017 Emtop Technology
SBC-IMX8MM Quick Operation Guide
9
IMX8MMINI DEMO can boot up from both TF card and eMMC, this sectio
n briefly introduce the process of system update on TF card and eMMC.
2. Update of TF Card System Image
1
）
Make A Bootable TF Card
a)
Get the system image from
Image
directory, named as
imx-image-xxx.
img.xz
, unxz it and create a raw image
imx-image-xxx.img
.
b)
If you work under Windows system, please run
Tools/win32diskimager
to
write the
imx-image-xxx.img
into TF Card. If you work under Linux system,
please use
dd
command to write it into TF Card.
Image Name
Display
Supported
imx-image-full-imx8mmddr4evk-xxx.img
MIPI-DSI
imx-image-full-imx8mmddr4evk-xxx-hdmi.img
HDMI
Note:
The difference between
imx-image-full-imx8mmddr4evk-xxx.img
and
imx-image-full-imx8m
mddr4evk-xxx-hdmi.img
is that the
fdt_file
in
uEnv.txt
chooses a different dtb.
2
）
Update U-Boot
If you’ve made some changes to the u-boot source code, and want to update it
into TFCard, please run the below command:
dd if=<YOUR_PATH>/flash.bin of=/dev/sdx bs=1K seek=33 conv=notrunc
Note:
/dev/sdx
is the TFCard device node recognized under Ubuntu system.
3
）
Update Kernel
If you have modified the kernel source code, please update the dtb and Image
under Partition 1 [FAT32] of the TF Card. That partition can be recognized by
Windows or Linux.
4
）
Update Rootfs
Because EXT4 isn’t accessible Under Windows, please mount the Partiton 2 of
TF Card under Ubuntu, change the target file and umount the Card.
Note:
Press down the button "
BOOT
" before power up, don't release it. Wait until booting message shows
on the terminal [3 seconds at most], release the button.
