Boot from NAND Flash
（
ubi file system for
core board with NAND Flash)
Update of NAND boot image needs the aid of u-boot. Whether or not NAND Flash
has data, the u-boot booted through TF card can be used to update NAND Flash
images.
Preparation
1.Format the TF card to FAT or FAT32 file system by “HP USB Disk Storage
Format Tool 2.0.6” from directory “03-Tools/” of CD.
2.Copy "MLO", "u-boot.img", "uEnv.txt", "zImage","myd_*335x.dtb" and
"rootfs.ubi" image files under directory “02-Images\Linux-image” to the TF card
from the CD.
Update
Insert the TF card with the system images into the development board, Connect
the corresponding board to set the boot mode of the jumper cap 1-2 pin, power
on and boot it. Press any key on the PC keyboard to enter the u-boot according
to the following prompts:
U-Boot
2016.05
(Jan
09
2017
-
19
:
37
:
43
+
0800
)
Watchdog enabled
I2C: ready
DRAM:
512
MiB
NAND:
512
MiB
MMC: OMAP SD/MMC:
0
, OMAP SD/MMC:
1
*** Warning - bad CRC,
using
default
environment
Net: cpsw
Press SPACE to
abort
autoboot in
2
seconds
MYIR>#
After entering the u-boot command line, input
run updatesys
from the PC keyboard to
start automatic updating process. If the partitions were changed, users should erase
the whole NAND Flash with command
nand erase.chip
:
MYIR># nand erase.chip
74
