• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 97 subscribers
  • Views 511 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM625: No response after downloading tiboot3 using uart0

Nancy Wang
Expert 8210 points

Part Number: AM625

Hi,

SDK：ti-processor-sdk-linux-am62xx-evm-08.03.00.19

Custom board

Customer wants to boot from uart, uart prints 01000000011a0000616d36327800000000000000475020200100010001000100CCCCCCCCCCCCCC"
Then use SecureCRT's xmodem to transmit the prebuild image tiboot3:

Starting xmodem transfer.  Press Ctrl+C to cancel.
Transferring tiboot3.bin...
  100%     327 KB       7 KB/sec    00:00:45       0 Errors  

After waiting for a few minutes, the following appears again:

01000000011a0000616d36327800000000000000475020200100010001000100CCCCCCCCCCCCCC

If using the tiboot3 compiled by himself：
Starting xmodem transfer. Press Ctrl+C to cancel.
Transferring tiboot3.bin...
100% 327 KB 7 KB/sec 00:00:45 0 Errors
After that, the uart has no output

Tispl.bin unable to download. Please help check.

  • 0
    TI__Guru* 80400 points

    Hello,
    I'm attaching the working boot log I captured from UART boot on AM62x-SK using AM62x Linux SDK.
    From the issue description, there seems a lockup when RBL booting r5-spl from UART on the customer board.
    I'd expect the customer needs to port/modify u-boot in order to boot on the customer board.
    Best,
    -Hong

    Fullscreen am62x-sk-e2_uart_boot.log Download 
    CCCCCCCCCCCC
U-Boot SPL 2021.01-00001-g441d4eb-dirty (Oct 19 2022 - 17:23:37 -0500)
SYSFW ABI: 3.1 (firmware rev 0x0008 '8.4.7--v08.04.07 (Jolly Jellyfi')
Trying to boot from UART
CCxyzModem - CRC mode, 0(SOH)/915(STX)/0(CAN) packets, 4 retries
Loaded 935808 bytes
Loading Environment from MMC... *** Warning - No MMC card found, using default environment

init_env from device 7 not supported!
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.7(release):v2.7.0-dirty
NOTICE:  BL31: Built : 16:41:25, Sep 27 2022

U-Boot SPL 2021.01-00001-g441d4eb-dirty (Oct 19 2022 - 17:22:24 -0500)
SYSFW ABI: 3.1 (firmware rev 0x0008 '8.4.7--v08.04.07 (Jolly Jellyfi')
Trying to boot from UART
CCxyzModem - CRC mode, 0(SOH)/829(STX)/0(CAN) packets, 5 retries
Loaded 847784 bytes


U-Boot 2021.01-00001-g441d4eb-dirty (Oct 19 2022 - 17:22:24 -0500)

SoC:   AM62X SR1.0 GP
Model: Texas Instruments AM625 SK
EEPROM not available at 0x50, trying to read at 0x51
Board: AM62-SKEVM rev E2
DRAM:  2 GiB
MMC:   mmc@fa10000: 0, mmc@fa00000: 1, mmc@fa20000: 2
Loading Environment from MMC... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  2  0 
=> md.l 0x43000030 1
43000030: 0000023b                               ;...

  • 0 in reply to Hong Guan64
    TI__Expert 8210 points

    Hi,

    Previously, due to hardware design problems, the VPP pin was not floating, and it was always powered on with a 1.8v power supply. Now, after disconnecting, we boot from uart and the uart keeps printing:

    CCCCCCC01000000011a0000616d36327800000000000000475020200100010001000100CCCCCCCCC
CCCCC01000000011a0000616d36327800000000000000475020200100010001000100CCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCC01000000011a0000616d3632780000000000000047502020010
0010001000100CCCCCCCCCCCCCCCCCCCCCCCC01000000011a0000616d36327800000000000000475
020200100010001000100CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC01000000011a0000616
d36327800000000000000475020200100010001000100CCCCCCCCCCCCCCCCCCCC01000000011a000
0616d36327800000000000000475020200100010001000100CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCC01000000011a0000616d36327800000000000000475020200100010001000100CCCCCCC
CCCCCCCCCCCCC01000000011a0000616d36327800000000000000475020200100010001000100CCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC01000000011a0000616d36327800000000000000475
020200100010001000100CCCCCCCCCCCCCCCCCCCC01000000011a0000616d3632780000000000000
0475020200100010001000100CCCCCCCCCCCCCCCCCCCCCCC

    After the xmodem is downloaded,the board still reboots. The vpp was connected to 1.8v before, will it damage the hardware?

  • 0 in reply to Nancy Wang
    TI__Guru* 80400 points
    Hong Guan64 said:
    From the issue description, there seems a lockup when RBL booting r5-spl from UART on the customer board.
    I'd expect the customer needs to port/modify u-boot in order to boot on the customer board.

    Do we know the customer made u-boot changs in order to boot the customer board?
    Best,
    -Hong