PROCESSOR-SDK-AM335X: PROCESSOR-SDK-AM335X

PEleph

I have an amm335x processor that is booting into CCCC... . How can i revover it.

I have the u-boot-restore.img and u-boot-spl-restore.bin file.

I have already tried following from my ubuntu machine:

# Flash SPL using XMODEM
sudo picocom -b 115200 /dev/ttyUSB18 --send-cmd "sx -vv" --receive-cmd "rx -vv"
-> Board printf "CCCC..."
CTRL+A+S and write "u-boot-spl-restore.bin"
CTRL+A+Q

# Flash U-Boot using YMODEM:

sudo picocom -b 115200 /dev/ttyUSB18 --send-cmd "sb -vv" --receive-cmd "rb -vv"

-> Board SPL prints "CCCC..."
CTRL+A+S and write "u-boot-restore.img"
CTRL+A+Q

After writing u-boot-restore.img, i was expecting the board to reboot and I could stop it into U-Boot prompt and start a normal flashing procedure. But, as soon as I reboot, I am still getting CCCC... from the board.

anyone can help?

I actually found out writing u-boot files failed. I am missing something to get that done successfuly?

over 3 years ago

0 PEleph over 3 years ago

Intellectual 735 points

My console screen shot:

p@p-ubuntu:/tftpboot$ sudo picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx -vv" --receive-cmd "rx -vv"

picocom v1.7

port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 115200
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sx -vv
receive_cmd is : rx -vv
imap is :
omap is :
emap is : crcrlf,delbs,

Terminal ready
CCCCCCCCCCCCCC

*** file: u-boot-spl-restore.bin

$ sx -vv u-boot-spl-restore.bin
Sending u-boot-spl-restore.bin, 808 blocks: Give your local XMODEM receive command now.
Xmodem sectors/kbytes sent: 0/ 0kRetry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: Retry Count Exceeded

Transfer incomplete

*** exit status: 128
CCCCCCCCCCC
Thanks for using picocom

p@p-ubuntu:/tftpboot$ sudo picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx -vv" --receive-cmd "rx -vv"
picocom v1.7

Terminal ready
CCCCC
*** file: u-boot-restore.img
$ sx -vv u-boot-restore.img
Sending u-boot-restore.img, 3036 blocks: Give your local XMODEM receive command now.
Xmodem sectors/kbytes sent: 0/ 0kRetry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: NAK on sector
Retry 0: Retry Count Exceeded

Transfer incomplete

*** exit status: 128
CCCCCCCCCCCC
Thanks for using picocom
p@p-ubuntu:/tftpboot$