DP 5.0.1 How to add the UDA partition?

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
10

hi ,@seeky15
The UDA is a partition reserved by NV and not open to customers.
If the you need a new partition to store private data, it is recommended to increase the partition .
you can add partition as below, here is an example ,

  1. modify flash_l4t_t194_spi_emmc_p3668.xml
` <partition name="kernel-dtb" type="kernel_dtb" oem_sign="true">
            <allocation_policy> sequential </allocation_policy>
            <filesystem_type> basic </filesystem_type>
            <size> 458752 </size>
            <file_system_attribute> 0 </file_system_attribute>
            <allocation_attribute> 8 </allocation_attribute>
            <percent_reserved> 0 </percent_reserved>
            <filename> DTB_FILE </filename>
            <description> **Required.** Slot A; contains kernel device tree blob. </description>
        </partition>
        <partition name="ADD1" type="data">
            <allocation_policy> sequential </allocation_policy>
            <filesystem_type> basic </filesystem_type>
            <size> 34123776 </size>
            <file_system_attribute> 0 </file_system_attribute>
            <allocation_attribute> 8 </allocation_attribute>
            <percent_reserved> 0 </percent_reserved>
            <description> **Required.** Reserved space for slot A. </description>
        </partition>
        <partition name="reserved_for_slot_A_user" type="data">
            <allocation_policy> sequential </allocation_policy>
            <filesystem_type> basic </filesystem_type>
            <size> 0 </size>
            <file_system_attribute> 0 </file_system_attribute>
            <allocation_attribute> 8 </allocation_attribute>
            <percent_reserved> 0 </percent_reserved>
            <description> **Required.** Reserved space for slot A. </description>
        </partition>
`

you can also decrease the size of APP and increase the size of ADD1 you want.

  1. Add reading and writing support for new added partition
    modify the flash.sh
#
       # Comment out sc7 support. It is found that sc7 sigheader is different and it needs special handling
       # See 200617500
       #
       # sc7 | sc7_b) target_partfile="${wb0bootname}";
       #       need_sign=1;
       #       ;;
       *spe-fw | spe-fw_b)
            target_partfile="${spefilename}";
            need_sign=1;
            ;;
       ADD1 | ADD2 )
            target_partfile="add1.bin";
        need_sign=1;
        ;;
       CPUBL-CFG)
            target_partfile="${cbootoptionfilename}";
            ;;
       *)   echo "*** Update ${tmp_updateid} is not supported. ***";
            exit 1; ;;
       esac;

  1. flash your device

  2. check the partition of ADD1 after flash , by command
    sudo gdisk -l /dev/mmcblk0
    you will find ADD1 partition

  3. write partition (write add1.bin to ADD1)
    sudo ./flash.sh -k ADD1 --image add1.bin jetson-xavier-nx-devkit-emmc mmcblk0p1

  4. read partition
    sudo ./flash.sh -r -k ADD1 -G testadd1.txt jetson-xavier-nx-devkit-emmc mmcblk0p1

you can try it, Thanks