[lttng-dev] Reg: LTTNG Support for arm64 based k3-am654 board

[Vadivel, Arulpandiyan]

Hi Team,

    We are working on the Texas Instrument's K3-am654 board(ARM64 based), on 4.19.165-cip41 RT and Non-RT kernel. We would like to have the lttng support on the board. Hence I have added below configurations.  With these configurations enabled I am not able to access the console itself and kernel stuck at Starting kernel itself as below.  Further we have added earlycon to debug the early console.  Bootargs given below. With these earlycon option also we are still stuck at  Starting kernel  itself.


Could you please help me to understand below queries,

  *    Do we have the support of lttng for TI's K3-am654 board?
  *    Or did we miss something in the kernel?


Bootargs
setenv bootargs "console=ttyS3,115200n8 root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait earlycon=ns16550a,mmio32,0x02810000"
load mmc 0:1 0x82000000 /usr/lib/linux-image-4.19.165-cip41-rt18/ti/k3-am654-base-board.dtb
load mmc 0:1 0x80080000 /boot/vmlinuz-4.19.165-cip41-rt18;
load mmc 0:1 0x81000000 /boot/initrd.img-4.19.165-cip41-rt18;
booti 0x80080000 0x81000000:20000 0x82000000

?
?Boot logs
=>
=> run bootcmd_mmc0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
77332 bytes read in 9 ms (8.2 MiB/s)
16533512 bytes read in 4217 ms (3.7 MiB/s)
8740838 bytes read in 731 ms (11.4 MiB/s)
## Flattened Device Tree blob at 82000000
   Booting using the fdt blob at 0x8200000
   Loading Ramdisk to fd670000, end fdec5fe6 ... OK
   Loading Device Tree to 00000000fd65a000, end 00000000fd66fe13 ... OK

Starting kernel ...

Kernel Configurations.
CONFIG_KPROBES=y
CONFIG_PERF_EVENTS=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_EVENT_TRACING=y
CONFIG_KRETPROBES=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_TRACEPOINTS=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_LTTNG=m

Regards,
Arulpandiyan V.
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