Where to put a custom partition layout?

[Schlumpf]

According to https://github.com/OE4T/meta-tegra/wiki/Redundant-Rootfs-A-B-Partition-Support, I a have a custom redundant flash layout XML file. In my distro.conf I set it with:

USE_REDUNDANT_FLASH_LAYOUT = "1"
PARTITION_LAYOUT_TEMPLATE_REDUNDANT = "flash_mycustom.xml"

The file is derived from flash_l4t_t194_spi_emmc_p3668_rootfs_ab.xml for a Xavier NX with some extensions.

But how do I get the file into the image?

[joekale]

I needed a new recipe to include the file in the rootfs and a bbappends to the tegra-bootfiles recipe to set that file to the PARTITION_FILE and/or PARTITION_FILE_EXTERNAL variable and also add a dependency on my recipe that includes the xml file.

This is the tegra-bootfiles_%.bbappends as an example.

DEPENDS += "rauc-custom-flash-layout"
RAUC_PARTITION_FILE = "${STAGING_DATADIR}/rauc-flash-layout/flash_rauc.xml"
PARTITION_FILE:custom-xavier-nx = "${RAUC_PARTITION_FILE}"
PARTITION_FILE_EXTERNAL:custom-orin-nano = "${RAUC_PARTITION_FILE}"

[madisongh]

For nanbield and later branches, this should get easier to do. There's a tegra-storage-layout recipe there that you can directly add a bbappend to, and supply your modified XML files by adding to the SRC_URI in the bbappend.

[albertbu]

Could we please have an example? It doesn't work either way

[dwalkes]

There's an example adding a data partition at https://github.com/mendersoftware/meta-mender-community/blob/4c1c2c144c9155bcca5cbd0f9d310eebef56d6c9/meta-mender-tegra/recipes-bsp/tegra-binaries/tegra-storage-layout-base_%25.bbappend but it's more complicated than just the simple replacement of the XML file.

Regarding

It doesn't work either way

Perhaps share a minimally modified fork of https://github.com/OE4T/tegra-demo-distro showing what you've attempted to change unsuccessfully and details about the issues you found would be a good approach. One benefit is that it would also help build the public example you are requesting.

[arrow53]

i'm interested in an A / B rootfs. I'd like to try tegra-storage-layout. But, my use case is I always want a data partition.

Is there an example layout xml that I can start with to try out the above?

[albertbu]

Hi, did you solve the issue? I'm facing the same problem. Thanks!

[DenizEDRS]

were you able to resolve this?

[dwalkes]

There are working examples in each branch of https://github.com/Trellis-Logic/kas-demos/blob/main/layers/meta-trellis-swupdate-rootfs-overlay-oe4t/recipes-bsp/tegra-binaries/tegra-storage-layout_%25.bbappend for jetson-orin-nano-devkit-nvme - you can pick the one which applies to your target branch and look at the commit history for the files to use with different MACHINEs.

[albertbu]

Hi I'll have a look, and be more than happy to share my work when I'll succeed. Alas, I do not have enough time to work on the demo distro, but I'll share everything when I'll succeed Thanks

…

On Mon, Sep 2, 2024 at 6:36 PM Dan Walkes ***@***.***> wrote: There's an example adding a data partition at https://github.com/mendersoftware/meta-mender-community/blob/4c1c2c144c9155bcca5cbd0f9d310eebef56d6c9/meta-mender-tegra/recipes-bsp/tegra-binaries/tegra-storage-layout-base_%25.bbappend but it's more complicated than just the simple replacement of the XML file. Regarding It doesn't work either way Perhaps share a minimally modified fork of https://github.com/OE4T/tegra-demo-distro showing what you've attempted to change unsuccessfully and details about the issues you found would be a good approach. One benefit is that it would also help build the public example you are requesting. — Reply to this email directly, view it on GitHub <#1467 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABRZY4H3B5HERVCG4EOQWFTZUSAV7AVCNFSM6AAAAABCWW7YJKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANJSGI2TKNQ> . You are receiving this because you commented.Message ID: ***@***.***>

-- Albert Burbea Hana Zemer 9 Tel Aviv 62917, Israel Tel/Fax + 972-3-6044704 Mobile: +972-52-3541842

[dwalkes]

I do not have enough time to work on the demo distro

To be clear, I'm not suggesting you specifically add a functional demo to the distribution, just that you start by using it as a way to test your changes in isolation from whatever else is custom in your layer and demonstrate whatever isn't working in a way which makes it easier to provide feedback.

[albertbu]

hi, well, the mender example just replaces / adds a filename to a partition, but it's not changing the size of the partition itself Albert

…

On Mon, Sep 2, 2024 at 6:36 PM Dan Walkes ***@***.***> wrote: There's an example adding a data partition at https://github.com/mendersoftware/meta-mender-community/blob/4c1c2c144c9155bcca5cbd0f9d310eebef56d6c9/meta-mender-tegra/recipes-bsp/tegra-binaries/tegra-storage-layout-base_%25.bbappend but it's more complicated than just the simple replacement of the XML file. Regarding It doesn't work either way Perhaps share a minimally modified fork of https://github.com/OE4T/tegra-demo-distro showing what you've attempted to change unsuccessfully and details about the issues you found would be a good approach. One benefit is that it would also help build the public example you are requesting. — Reply to this email directly, view it on GitHub <#1467 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABRZY4H3B5HERVCG4EOQWFTZUSAV7AVCNFSM6AAAAABCWW7YJKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANJSGI2TKNQ> . You are receiving this because you commented.Message ID: ***@***.***>

-- Albert Burbea Hana Zemer 9 Tel Aviv 62917, Israel Tel/Fax + 972-3-6044704 Mobile: +972-52-3541842

[Lexmark-chad]

Per what @madisongh indicated you can simply .bbappend to tegra-storage-layout and specify your own custom layout. Something like this:

FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"

SRC_URI:append = " file://external-flash.xml"

PARTITION_FILE_EXTERNAL = "${WORKDIR}/external-flash.xml"

[djusten]

PARTITION_FILE_EXTERNAL = "${WORKDIR}/external-flash.xml"

I used PARTITION_FILE = "${WORKDIR}/external-flash.xml" instead.

[dwalkes]

It will depend on the MACHINE, if you are working with an nvme variant you'll want to use PARTITION_FILE_EXTERNAL, if you have an emmc variant like the AGX Orin and aren't booting from nvme you'll use PARTITION_FILE.