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.

[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