Recent booting problems on HiKey960

[EStapf]

Hi

all,

I have some problems booting OP-TEE on my Hikey960 board. I followed the instructions under https://github.com/OP-TEE/build and I was able to build and flash (make flash) everything nicely.
However, when I boot the system it gets stuck with the following lines:

[0.753291] hi3660-mbox e896b000.mailbox: Mailbox enabled
[ 21.773459] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 21.779191] 5-...: (1 GPs behind) idle=135/140000000000000/0 softirq=21/22 fqs=2625
[ 21.787109] (detected by 0, t=5252 jiffies, g=-289, c=-290, q=111)
[ 21.793448] Task dump for CPU 5:
[ 21.796706] swapper/0 R running task 0 1 0 0x00000002
[ 21.803837] Call trace:
[ 21.806320] [] __switch_to+0x94/0xa8
[ 21.811513] [<0000000000000040>] 0x40

I attached the whole log file from the boot process.
Any idea what could lead to those stalls on the CPU? I get the same error with the make recovery command.

Surprisingly I was able to run OP-TEE on the board only a few weeks ago. I also got some problem after make flash, some error with the BL2. However, a make recovery fixed the problem back then.
So could this problem maybe be caused by one of the more recent commits?

boot.log

[Edit: fixed URL to build Git]

[vchong]

@pentr We'll investigate and get back to you later. Thanks for the report!

[jforissier]

I'm seeing the same issue :(

[jforissier]

Looks like https://github.com/96boards-hikey/tools-images-hikey960 commit 92f365073cd812a8d8ca159b01f52dd6dd06d111 breaks the thing.
Workaround:

$ (cd tools-images-hikey960; git checkout 92f365073cd8^)

(thanks @vchong!)

[jforissier]

@pentr feel free to try again and re-open the issue if it doesn't work for you.

[vchong]

@jforissier np thanks for testing!