Kernel Not booting in Jetson Orin Nano

Autonomous Machines Jetson & Embedded Systems Jetson Orin Nano
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1

Hi ,
I tried to Compile a new kernel in Jetson Orin Nano and have replaced the new Image in /boot/ path in the device.
I also have kept the Default on in this path With a different name.
In addition to this I have modified the \boot\extlinux\extlinux.conf to uncomment the backup entries so the even one setting fails to boot I Have the default image.
When I try to boot the Image, the device is starting (fan and led is blinking) and Monitor Connected to it showing the below Image.

shared image(3)
shared image(3)2048×1536 365 KB

After this Page the monitor goes blank, but the fan and ethernet connected to the device is running and blinking respectively.
What should I do to boot the Device.

Attaching log for reference.
Kernel_log.txt (36.0 KB)

2

Then can it boot up normally after you delete the new kernel?
Please also show steps on how you build the kernel.

3

Earlier i encountered the same issue but at that time I didn’t keep the backup_image in the /boot/ directory so had to re-flash the device.
This time I had kept the Backup_image in /boot/ path and uncommented the extlinux.conf file to ensure the backup entries.

These are steps I followed : NVIDIA Jetson Orin Nano - Kernel Compile

4

Please follow our official steps:
https://docs.nvidia.com/jetson/archives/r36.3/DeveloperGuide/SD/Kernel/KernelCustomization.html

There is huge difference in kernel compilation between rel-35 and rel-36.

5

When I try to replace the original Image with image I built its working fine.
Let me check Again the Steps I followed in Kernel Compilation,I took that as a reference and built it according to rel-36.

6

How can I find the release-tag in this : ./source_sync.sh -k -t is this path ?
l4t-gcc/aarch64–glibc–stable-2022.08-1/bin/aarch64-buildroot-linux-gnu- ?

7

The release tag is always specified in Release Notes:
https://docs.nvidia.com/jetson/archives/r36.3/ReleaseNotes/Jetson_Linux_Release_Notes_r36.3.pdf?_gl=1*1rj8eey*_gcl_au*Mzg3MTA0Mzk4LjE3MTQ0NDc1ODg.
Use jetson_36.3.

8

Hi , Im trying to edit Linux_for_Tegra/source/kernel/kernel-jammy-src/.config file by adding CONFIG_CMA_SIZE_MBYTES=512 , but When I build the kernel its getting changed to CONFIG_CMA_SIZE_MBYTES=32.
Why is getting changed ?
Im trying to do kernel customisation in Jetson Orin Nano.

9

Please don’t directly change .config or defconfig file.
Do everything with menuconfig.

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Im unable to see menuconfig option in Jetson orin nano ,when I run this command export CROSS_COMPILE=/bin/aarch64-buildroot-linux-gnu- and type make menu config its no showing anything .
How to access menuconfig ?

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make ARCH=arm64 menuconfig

12

Hi, how to enter this in menuconfig its not there in config file.

CONFIG_IRQ_REMAP=y

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https://cateee.net/lkddb/web-lkddb/IRQ_REMAP.html#google_vignette
It’s only available on x86_64.

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I’m try to change parameters in Menuconfig and when I start make -C kernel it uses defconfig.
I’m disabling this “CONFIG_ARCH_QCOM” in menuconfig and exported KERNEL_DEFCONFIG to arch/arm64/config/name_defconfig.
But once I build the kernel Changes done in Menuconfig is getting reverted back to its original value.
Same is the case with “CONFIG_CMA_SIZE_MBYTES” , trying to set it to “512” in menuconfig but its getting
to “32”(orginal value).
Same happens with this paramter too , “CONFIG_CMA_AREAS”, trying to set it to "7" in menuconfig but its getting
to “19”(orginal value).
Why is it reverting back ?

15

You already explained it here…
The Makefile by default uses defconfig, not your customized name_defconfig.

16

okay got it.

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