<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none"><!-- p { margin-top: 0px; margin-bottom: 0px; }--></style>
</head>
<body dir="ltr" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Hi Team, <br>
</p>
<p> 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 <strong><em>Starting kernel </em></strong>itself as below. <span style="font-size: 12pt;">Further we have added earlycon to debug</span><span style="font-size: 12pt;"> the early console. Bootargs given below.
With these earlycon option also we are still stuck at <strong style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><em>Starting kernel </em></strong> itself. </span></p>
<p><span style="font-size: 12pt;"><br>
</span></p>
<p><span style="font-size: 12pt;">Could you please help me to understand below queries,</span><br>
</p>
<ul dir="" class="" style="">
<li> Do we have the support of lttng for TI's K3-am654 board?<br>
</li><li><span style="font-size: 12pt;"> Or did we miss something in the kernel?</span></li></ul>
<p><span style="font-size: 12pt;"><br>
</span></p>
<div><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><strong>Bootargs</strong></span><br style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<em>setenv bootargs "console=ttyS3,115200n8 root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait earlycon=ns16550a,mmio32,0x02810000"</em></div>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<em>load mmc 0:1 0x82000000 /usr/lib/linux-image-4.19.165-cip41-rt18/ti/k3-am654-base-board.dtb</em></div>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<div><em>load mmc 0:1 0x80080000 /boot/vmlinuz-4.19.165-cip41-rt18;</em></div>
</div>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<div><em>load mmc 0:1 0x81000000 /boot/initrd.img-4.19.165-cip41-rt18;</em></div>
</div>
</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<div><em>booti 0x80080000 0x81000000:20000 0x82000000</em></div>
</div>
</div>
</blockquote>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
</div>
<br>
</div>
<em style="font-size: 12pt;"></em><br>
<em style="font-size: 12pt;"><strong>Boot logs</strong></em><br>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>
<div><em>=></em></div>
</div>
<div>
<div><em>=> run bootcmd_mmc0</em></div>
</div>
<div>
<div><em>switch to partitions #0, OK</em></div>
</div>
<div>
<div><em>mmc0 is current device</em></div>
</div>
<div>
<div><em>Scanning mmc 0:1...</em></div>
</div>
<div>
<div><em>77332 bytes read in 9 ms (8.2 MiB/s)</em></div>
</div>
<div>
<div><em>16533512 bytes read in 4217 ms (3.7 MiB/s)</em></div>
</div>
<div>
<div><em>8740838 bytes read in 731 ms (11.4 MiB/s)</em></div>
</div>
<div>
<div><em>## Flattened Device Tree blob at 82000000</em></div>
</div>
<div>
<div><em> Booting using the fdt blob at 0x8200000</em></div>
</div>
<div>
<div><em> Loading Ramdisk to fd670000, end fdec5fe6 ... OK</em></div>
</div>
<div>
<div><em> Loading Device Tree to 00000000fd65a000, end 00000000fd66fe13 ... OK</em></div>
</div>
<div>
<div><br>
</div>
</div>
<div>
<div><em style="color: rgb(255, 0, 0); text-decoration: none solid rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0); text-decoration: none solid rgb(255, 0, 0);">Starting kernel ...</span></em></div>
</div>
</blockquote>
<div><br>
</div>
<div>Kernel Configurations.<br>
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_KPROBES=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_PERF_EVENTS=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_HAVE_SYSCALL_TRACEPOINTS=y<br>
</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_EVENT_TRACING=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_KRETPROBES=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_KALLSYMS=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_KALLSYMS_ALL=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_HIGH_RES_TIMERS=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_TRACEPOINTS=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_FTRACE=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_FUNCTION_TRACER=y</div>
</blockquote>
<blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">
<div>CONFIG_LTTNG=m</div>
</blockquote>
</blockquote>
<div><br>
</div>
<div>Regards,<br>
</div>
<div>Arulpandiyan V.<br>
</div>
</body>
</html>