RAM disk support for AGX Orin

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

Hi,

Is it possible to use part of the DDR memory area implemented in Orin as a file system?
I would like to use portion of DDR memory (about 20GB) as a temporary directory to store update files for OTA updates. Is this possible?

Best Regards,
UNA

3

This sounds like RCM boot on jetson. We have an example to RCM boot from NFS.

https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/SD/FlashingSupport.html?highlight=rcm%20boot#to-rcm-boot-to-nfs

4

AGX Orin has 32GB or 64 GB of DRAM.
I am thinking of not having the root file system on the above DRAM instead of NFS, is this possible?

Best Regards,
UNA

5

Try with

sudo ./flash.sh --rcm-boot your_board_config mmcblk0p1

6

Your approach appears to be to write the RCM boot loader to the eMMC and boot in Recovery mode instead of booting normally. Rather, I would like to have a partition for each of the eMMC and DDR RAM in the normal boot.

Best Regards,
UNA

7

Then it is not possible.

9

Hi Wayne,

The answer is that the DDR RAM area cannot have a partition like a file system. Does this mean that DDR RAM is occupied as Jetson’s work memory and cannot have a separate partition?
If there is any other reason, could you please let us know?

Best Regards,
UNA

10

It is just our bootflow cannot achieve your request.

11

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