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AM625: reboot is not working while booting linux through emmc.

Abhijeet Damahe
Prodigy 160 points
Part Number: AM625
Other Parts Discussed in Thread: SYSCONFIG

Hello,

I booted the rootfs.ext4 through DFU into the EMMC. After logging in, when I type the 'reboot' command in the UART terminal, the reboot doesn't work, and the UART log shows the following.

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Stopping topping Session c2 of User root...
Stopping Session c5 of User root...
[ OK ] Removed slice Slice /system/dropbear.
[ OK ] Removed slice Slice /system/modprobe.
[ OK ] Removed slice Slice /system/systemd-coredump.
[ OK ] Stopped target Graphical Interface.
[ OK ] Stopped target Multi-User System.
[ OK ] Stopped target Login Prompts.
[ OK ] Stopped target RPC Port Mapper.
[ OK ] Stopped target Sound Card.
[ OK ] Stopped target Timer Units.
[ OK ] Stopped Daily rotation of log files.
[ OK ] Stopped Daily Cleanup of Temporary Directories.
[ OK ] Stopped target System Time Set.
[ OK ] Stopped target Hardware activated USB gadget.
[ OK ] Closed Process Core Dump Socket.
[ OK ] Closed Load/Save RF Kill Switch Status /dev/rfkill Watch.
Stopping Job spooling tools...
Stopping Avahi mDNS/DNS-SD Stack...
Stopping Bluetooth service...
Stopping containerd container runtime...
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

please provide me the solution on how to reboot my device using soft reboot i.e reboot command.

Thanks,

Abhijeet

  • +1
    TI__Guru**** 155121 points

    Hi Abhijeet,

    It is possible that is because the eMMC device RST_n signal is not enabled. Please refer to the instruction linked below to enable it.

    https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1168342/faq-am62x-how-to-check-and-configure-emmc-flash-rst_n-signal-to-support-warm_reset-from-emmc-booting-on-am62x-sk-e2

  • 0 in reply to Bin Liu
    Prodigy 160 points

    Hello Bin,

    Thanks this solved my issue .

    I have a question regarding whether the changes I make will be retained when I update the OS filesystem or modify the U-boot of my device. Can these changes be implemented during the hardware design phase using the sysconfig utility?

    Thanks,

    Abhijeet 

  • 0 in reply to Bin Liu
    Prodigy 160 points

    Hello Bin,

    After implementing the above solution, our Ethernet continuously resets, as indicated in the following log.

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    root@am62xx-evm:~# reb[ 45.292173] kauditd_printk_skb: 5 callbacks suppressed
    [ 45.292203] audit: type=1334 audit(1712898317.820:29): prog-id=12 op=UNLOAD
    [ 45.304810] audit: type=1334 audit(1712898317.820:30): prog-id=11 op=UNLOAD
    oot
    Stopping topping Session c2 of User root...
    [ OK ] Removed slice Slice /system/modprobe.
    [ OK ] Removed slice Slice /system/systemd-coredump.
    [ OK ] Stopped target Graphical Interface.
    [ OK ] Stopped target Multi-User System.
    [ OK ] Stopped target Login Prompts.
    [ OK ] Stopped target RPC Port Mapper.
    [ OK ] Stopped target Sound Card.
    [ OK ] Stopped target Timer Units.
    [ OK ] Stopped Daily rotation of log files.
    [ OK ] Stopped Daily Cleanup of Temporary Directories.
    [ OK ] Stopped target System Time Set.
    [ OK ] Stopped target Hardware activated USB gadget.
    [ OK ] Closed Process Core Dump Socket.
    [ OK ] Closed Load/Save RF Kill Switch Status /dev/rfkill Watch.
    Stopping Job spooling tools...
    Stopping Avahi mDNS/DNS-SD Stack...
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    After power ON power OFF cycle IT works fine.

    How to solve this new problem ?

    Thanks,

    Abhijeet

  • 0 in reply to Abhijeet Damahe
    TI__Guru**** 155121 points

    Hi Abhijeet,

    Abhijeet Damahe said:
    I have a question regarding whether the changes I make will be retained when I update the OS filesystem or modify the U-boot of my device.

    This change is in the eMMC device, (and it is NOT reversible). So yes, it will be retained.

    Abhijeet Damahe said:
    After implementing the above solution, our Ethernet continuously resets, as indicated in the following log.

    This issue is irrelevant to eMMC RST_n change, likely a different issue which is just revealed after Linux reboot. Please create a new e2e thread for the issue, so that our Ethernet expert can assist.

  • 0 in reply to Bin Liu
    Prodigy 160 points

    Hello,

    Bin

    Thanks, I will creat a new e2e thread .

    Thanks,

    Abhijeet