mcuboot on nRF9160 custom board

[MayurKumar]

I have written simple hello world code on nRF9160 custom board and enables the MCUBoot as bootloader using CONFIG_BOOTLOADER_MCUBOOT=y in prj.conf file.

Also, made some bootloader related configuration at mcuboot.conf file.

I have kept the break point on loader.c file but my program execution is not halting there.

my question is that. How to debug the mcuboot a bootloader code on nRF9160 custom board?

I am using Segger Embedded Studio IDE.

[Elfving]

Hey Mayurkumar!

I see you have another case that strictly isn't related to this, but still has the same title. Please keep the support tickets separate by giving them different and descriptive titles.

When it comes to your issue though, it might be that the thread isn't running on the files you mentioned. Can you tell me more about what configurations you added? 

Best regards,

Elfving

[MayurKumar]

Hi,

In my hello world application i have added the below prj.conf

# Bootloader
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_SECURE_BOOT=y
#CONFIG_BUILD_S1_VARIANT=y
CONFIG_IMG_MANAGER=y
CONFIG_MCUBOOT_IMG_MANAGER=y

# External Falsh for secondary storage
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y

CONFIG_PM_EXTERNAL_FLASH=y
CONFIG_PM_EXTERNAL_FLASH_DEV_NAME="MX25R64"
CONFIG_PM_EXTERNAL_FLASH_BASE=0x0
CONFIG_PM_EXTERNAL_FLASH_SIZE=0x800000

mcuboot.conf as below

# 
CONFIG_SPI=y
#CONFIG_SPI_1=y
CONFIG_SPI_NOR=y
CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
#CONFIG_SPI_NOR_STACK_WRITE_BUFFER_SIZE=16

CONFIG_MULTITHREADING=y
CONFIG_BOOT_MAX_IMG_SECTORS=512 

# Enable these for serial recovery
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=4
CONFIG_LOG_OVERRIDE_LEVEL=4
CONFIG_PM_EXTERNAL_FLASH=y
CONFIG_PM_EXTERNAL_FLASH_DEV_NAME="MX25R64"
CONFIG_PM_EXTERNAL_FLASH_BASE=0x0
CONFIG_PM_EXTERNAL_FLASH_SIZE=0x800000
CONFIG_PM_EXTERNAL_FLASH_SUPPORT_LEGACY=y

#secondary image
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
CONFIG_PM_PARTITION_SIZE_MCUBOOT_SECONDARY=0xf0000

#OVERWRITE mode
CONFIG_BOOT_UPGRADE_ONLY=y

#shared memory area
#CONFIG_MEASURED_BOOT=y

CONFIG_MAIN_STACK_SIZE=10240

CONFIG_GPIO=y

# Enable regulators
CONFIG_REGULATOR=y

 

pm_static.yml as below

mcuboot:
  address: 0x0
  end_address: 0xc000
  placement:
    before:
    - mcuboot_primary
  region: flash_primary
  size: 0xc000
EMPTY_0:
  address: 0xC000
  end_address: 0x10000
  placement:
    before:
    - mcuboot_pad
  region: flash_primary
  size: 0x4000
mcuboot_primary:
  address: 0x10000
  end_address: 0x100000
  orig_span: &id001
  - mcuboot_pad
  - spm
  - app
  region: flash_primary
  sharers: 0x1
  size: 0xF0000
  span: *id001
mcuboot_primary_app:
  address: 0x10200
  end_address: 0x100000
  orig_span: &id002
  - app
  - spm
  region: flash_primary
  size: 0xEFE00
  span: *id002
mcuboot_pad:
  address: 0x10000
  end_address: 0x10200
  placement:
    align:
      start: 0x8000
    before:
    - mcuboot_primary_app
  region: flash_primary
  size: 0x200
spm:
  address: 0x10200
  end_address: 0x20200
  inside:
  - mcuboot_primary_app
  placement:
    before:
    - app
  region: flash_primary
  size: 0x10000
app:
  address: 0x20200
  inside:
  - mcuboot_primary_app
  region: flash_primary
  size: 0xDFE00
mcuboot_secondary:
  address: 0x0
  device: MX25R64
  end_address: 0xf0000
  placement:
    align:
      start: 0x000
  region: external_flash
  size: 0xf0000
storage:
  address: 0xf0000
  end_address: 0x800000
  device: MX25R64
  region: external_flash
  size: 0x710000
  

Thank You,

MayurKumar

[Elfving]

Hey Mayur!

Yes, this is possible. This is what you need to do:

- Program the sample to the chip

- Start an Ozone-session, and when you choose an elf file, then choose <sample>/<build folder>/mcuboot/zephyr/zephyr.elf.

- Then you drag the file /bootloader/mcuboot/boot/bootutil/src/loader.c into the Ozone window.

- Then choose debug --> start debug session --> Attach to running program

- Then set a breakpoint in loader.c and press Debug --> reset

This should work.

Best regards,

Elfving

[MayurKumar]

Hi,

I am able to debug my custom board using ozone debug as per your suggestion.

My issue is that mcuboot is unable to read/swap the image. So i want to debug loader.c file on nRF9160 DK board. When i do same process for DK board i unable to debug it (program execution didn't halt at breakpoints)?  

Is there any settings to be enable for nRF9160DK board?

[Elfving]

Hello! Sorry about the delay.

MayurKumar said:

program execution didn't halt at breakpoints

I see, that is odd. And you do manage to set the breakpoints? Note that not every line gives you that option.

What about at line 90 on loader.c? Place a breakpoint, then go to Debug --> Reset --> Reset & Run.

MayurKumar said:

Is there any settings to be enable for nRF9160DK board?

Nothing you require for this to work, but speaking of which I believe CONFIG_DEBUG_OPTIMIZATIONS could be helpful.

Best regards,

Elfving