LS1046A-FRWY won't boot Linux Kernel if CodeWarrior is running

[mindchasers]

Hello,

I'm  using an LS1046A-FRWY board with LSDK 20.04 Yocto 3.1 release (fsl-image-networking image) and CodeWarrior (CW) Version v2020.06.

Without CW running, the Kernel boots fine via TFTP from U-boot. However, if I have the CW debugger running, the boot process hangs after "Starting kernel ..."   This is true even if I delete all breakpoints. 

I followed the instructions posted here:  https://freescale.jiveon.com/docs/DOC-331981

If I hit suspend while the kernel boot is hung, I see it stopped at __primary_switched @ ffff800011ae0320:   I'm not able to step or resume from here.

I don't see any warnings while invoking the debugger. 

Thanks

Bob

[yipingwang]

Hello Bob,

First please compile Linux Kernel with debug info enabled.

Please configure Debugger, Startup and OS Awareness panels according to the section "3. Debug Linux Kernel by Attaching Running U-boot" in https://freescale.jiveon.com/docs/DOC-331981.

On the target board, after setting up u-boot and entering into u-boot prompt. In CodeWarrior IDE, click “Debug” to connect to the target board to attach to u-boot. then click “Suspend” button in CodeWarrior IDE to stop the running u-boot, and
enter “break _text” in the gdb console to set the breakpoint at the start of Linux Kernel.

In CodeWarrior IDE click resume button, on the target board, type Linux Kernel booting up command.

=> tftp 0xa0000000 b25805/ls1043rdb/kernel-fsl-ls1043a-rdb.itb
=> bootm 0xa0000000

In CodeWarrior IDE, the debugger will stop at the Linux Kernel entry point address.

Click Resume button Linux Kernel will continue to run.

Thanks,

Yiping