[AR-300M] U-Boot serial access settings for version 20220216

[szab]

Thank you for the hint!

Now I’m able to communicate to U-Boot!
I use my CP2102 to receive and the CH341A to send data … of course with two minicoms.

And now I know why it doesn’t boot the NAND image:

...
Device 0 bad blocks:
  06000000
  07fe0000
Found ART,Checking calibration status...
Device have calibrated,Checking device test status...
Device haven't tested. Please test device in calibration firmware...
...

So executing the commands below helped me too!

AR-300m upgrade uboot to newer verions

I resolved marking the device as tested executing the following commands in the u-boot console: # prepare in memroy cp.b 0x9fff0000 0x81000000 0xffff mw 0x81000050 0x646f6e65 # done mw 0x81000060 0x7365636f # seco # write to flash protect off bank 1 cp.b 0x81000050 0x9fff0050 4 # done cp.b 0x81000060 0x9fff0060 4 # seco protect on bank 1 Now I am happy with my cool AR300M booting to NAND and/or NOR using the switch

...
Device 0 bad blocks:
  06000000
  07fe0000
Found ART,Checking calibration status...
Device have calibrated,Checking device test status...
Device have tested,Checking MAC address...
Device have MAC address,Checking device flash status...
Device have nor and nand flash,Booting standard firmware from nand flash...
Booting image at: 0x81000000
val is 0
...