How to remove nvs_storage partition

[tomas_mjp]

SDK: v2.6.0. nRF5340 custom board

Hello I'm trying to do an static partitioning scheme using a pm_static.yml file and also I want to use NVS to store some data.

The problem is that when I add NVS to the project a nvs_storage partition is automatically generated inside mcuboot_primary_app and I don't want that, I want a separate partition for NVS  (storage1) because I'm going to do DFU and I dont want to lose that data on every DFU process.

What can I do to delete nvs_storage partition?

This is my pm_static.yml

app:
  address:     0x00c200
  end_address: 0x074000
  region: flash_primary
  size:        0x067e00

mcuboot:
  address:     0x000000
  end_address: 0x00c000
  placement:
    before:
    - mcuboot_primary
  region: flash_primary
  size:        0x00c000

mcuboot_pad:
  address:     0x00c000
  end_address: 0x00c200
  placement:
    align:
      start:   0x004000
    before:
    - mcuboot_primary_app
  region: flash_primary
  size:        0x000200

mcuboot_primary:
  address:     0x00c000
  end_address: 0x074000
  orig_span: &id001
  - mcuboot_pad
  - app
  region: flash_primary
  sharers: 0x1
  size:        0x068000
  span: *id001

mcuboot_primary_app:
  address:     0x00c200
  end_address: 0x074000
  orig_span: &id002
  - app
  region: flash_primary
  size:        0x067e00
  span: *id002

mcuboot_secondary:
  address:     0x074000
  end_address: 0x0dc000
  placement:
    after:
    - mcuboot_primary
    align:
      start:   0x004000
  region: flash_primary
  share_size:
  - mcuboot_primary
  size:        0x068000

# NetCore secondary partition in internal flash. Needed for DFU
mcuboot_secondary_1:
  address:     0x0dc000
  end_address: 0x0fc000
  placement:
    after:
    - mcuboot_secondary
  region: flash_primary
  size:        0x020000

storage1:
  address:     0x0fc000
  end_address: 0x100000
  placement:
    after:
    - mcuboot_secondary_1
  region: flash_primary
  size:        0x004000
  
otp:
  address: 0xff8100
  end_address: 0xff83fc
  region: otp
  size: 0x2fc

pcd_sram:
  address: 0x2006f000
  end_address: 0x20071000
  placement:
    before:
    - networkCore_sram
    - end
  region: sram_primary
  size: 0x2000
  
networkCore_sram:
  address: 0x20071000
  end_address: 0x20080000
  placement:
    before:
    - end
  region: sram_primary
  size: 0xF000
  
shared_sram:
  address: 0x20000000
  end_address: 0x20001000
  placement:
    before:
    - sram_primary
  region: sram_primary
  size: 0x1000

sram_primary:
  address: 0x20010000
  end_address: 0x2006f000
  region: sram_primary
  size: 0x6e000

And this is the generated memory report:

Regards!

[Marte Myrvold]

Hi,

Can this be reproduced in an SDK sample? If so, please share how to reproduce it. If not, can you upload your project here? If you do not want to upload the project in a public ticket, let me know and I can make it private.

Best regards,
Marte

[tomas_mjp]

Hi Marte Myrvold !

I can reproduce using the zephyr/samples/subsys/nvs sample whit the pm_static.yml attached in the previous post and adding CONFIG_BOOTLOADER_MCUBOOT=y to the prj.conf.

I'm attaching the sample with the modification descrived above.

nvs_sample_static_partitions.zip

[Marte Myrvold]

Hi,

I do not get the nvs_storage partition under mcuboot_primary_app when adding CONFIG_BOOTLOADER_MCUBOOT=y in prj.conf, and I do not get it in the project you shared if I do not include the static partition file.

Do you need the storage1 partition, or is it enough with the nvs_storage partition as long as it is not located inside mcuboot_primary_app? If you rename the storage1 partition to nvs_storage in your pm_static.yml, the nvs_storage partition will no longer be located inside mcuboot_primary_app:

Best regards,
Marte

[tomas_mjp]

Thank you very much Marte Myrvold , I've renamed the storage1 partition to nvs_storage and now I can place it wherrever I want using the pm_static.yml. Great!

Regards