How to flash multiple partition files simultaneously

For example, I want to flash <spe-fw,kernel-dtb,bootloader-dtb> at the same time. The following command is useless:

sudo ./ -r -k {spe-fw,kernel-dtb,bootloader-dtb} jetson-xavier mmcblk0p1

It only can flash spe-fw.

Hi Xu_Xu,

-k parameter is used for flashing the specified partition.
-r parameter is used for using current booloader/system.img.

If you wants to flash multiple partitions, please just flash w/o these parameters.

$sudo ./ jetson-xavier mmcblk0p1

Thanks your reply. @KevinFFF
The command:

$sudo ./ -r jetson-xavier mmcblk0p1

will update all partitions. But it’s a waste of time. If I only want to flash <spe-fw,kernel-dtb,bootloader-dtb> at the same time. How to do?

What’s more. The command:

sudo ./ -r -k spe-fw jetson-xavier mmcblk0p1

makes agx devkit reboot automatically after flash successfully. So I have to enter flash mode again to update kernel-dtb. If you can tell me some method to disable reboot automatically after flash. I can flash <spe-fw,kernel-dtb,bootloader-dtb> by the following command with entering one-time flash mode:

sudo ./ -r -k spe-fw jetson-xavier mmcblk0p1
sudo ./ -r -k kernel-dtb jetson-xavier mmcblk0p1
sudo ./ -r -k bootloader-dtb jetson-xavier mmcblk0p1

What‘s more, I want to know what’s the difference between kernel-dtb and bootloader-dtb? From flash.xml, I find that both partitions share a dtb file(kernel_tegra194-p2888-0001-p2822-0000.dtb,tegra194-p2888-0001-p2822-0000.dtb). If I only update kernel-dtb partition, system works well and meets my expectations.

There is no such command to flash multiple partitions at same time.

Bootloader-dtb is for bootloader to read. Kernel dtb is for kernel to read.

If I modify the DTB file (such as spi1), I should update both kernel-dtb and bootloader-dtb or only kernel-dtb partition?

If you don’t need spi1 running in bootloader, then it is okay to update kernel only.

I’m sorry. Your answer puzzled me! I only known that peripherals can run in kernel. Do you have any official documents in l4t-r32.7.3 for peripherals running in bootloader?

For example, boot logo is from bootloader. Display is also a peripheral.

There is no such document for your request. There is not much to discuss for this part.

Also, you didn’t mention 32.7.3 until now.


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