Use external flash (AT45DB0) with MCUBOOT

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Mon, 21 Aug 2023 15:30:40 GMT

The mcuboot only supports spi-nor and qspi-nor flash.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Fri, 18 Aug 2023 15:07:15 GMT

mcuboot only supports spi-nor?

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Fri, 18 Aug 2023 15:03:02 GMT

Not sure whether MCUBoot can support AT45DB161 or not, but I would suggest using a spi-nor flash.

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Fri, 18 Aug 2023 13:20:49 GMT

I installed the mx25r6435 chip, the application worked with it. When I install the AT45DB161 chip but the application doesn't work. MCUBoot only supports "jedec,spi-nor"? It can't work with "atmel,at45"?

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Thu, 17 Aug 2023 19:26:04 GMT

Do you test the flash with nRF52840DK or your custom board? Is it the same HW as your project? I see there is a custom board file in your project. It should be able to use the same board file/overlay as the flash test. Did you rename the overly file for mcuboot as my suggestion?

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Thu, 17 Aug 2023 16:40:23 GMT

I did a flash test, the test passed successfully.

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Wed, 16 Aug 2023 20:00:49 GMT

"W: Failed reading sectors; BOOT_MAX_IMG_SECTORS=256 - too small?"

The error messages for this are not very exact.

This means one of two things:

CONFIG_BOOT_MAX_IMG_SECTORS is too small, but it is typically 256 for a 1MB flash device, such as nRF52840.
The flash driver for this slot is not detected
- This means that your external flash configuration for the MCUboot child image is wrong somehow

In your case, I guess it is the latter.

Can you test the flash driver https://github.com/nrfconnect/sdk-zephyr/tree/451c1c4b439597b6f4fa6466cb070a0b15aea641/samples/drivers/spi_flash_at45 and get the expected result?

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Wed, 16 Aug 2023 16:57:11 GMT

What could be the problem?

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Wed, 16 Aug 2023 16:04:06 GMT

Yes, I will only have one image.

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Wed, 16 Aug 2023 15:57:21 GMT

If you only build with one child image (mcuboot) for this board, you could just only have these config and overlay files under child_image folder as

child_image\mcuboot.config

child_image\mcuboot.overlay

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Wed, 16 Aug 2023 15:25:27 GMT

Here is the structure of my project. Or did I do something wrong?

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Wed, 16 Aug 2023 15:19:50 GMT

Hi,

[quote user="SavchenkoIvan"]child_image\mcuboot\boards\*board.config:[/quote][quote user="SavchenkoIvan"]child_image\mcuboot\boards\*mcuboot_dts.overlay:[/quote][quote user="SavchenkoIvan"]app/boards/beedigit_nrf52840.dts(custom board):[/quote]

From Multi Image builds:

It should be

child_image\mcuboot\boards\*board_name.config

child_image\mcuboot\boards\*board_name.overlay

app\boards\*board_name.overlay

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Wed, 16 Aug 2023 09:29:42 GMT

I was able to successfully build and run the project. I can see that the firmware is being successfully written to the outer flesh. But after rebooting the device, I can't see the update starting. Here is some information that might help you. I was able to successfully build and run the project. I see that the firmware is successfully written to an external flash. But after restarting the device, I don't see the update starting. Here is some information that might help you.

child_image\mcuboot\boards\*board.config:

#
# Copyright (c) 2021 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
#
CONFIG_MAIN_STACK_SIZE=10240

CONFIG_MCUBOOT_INDICATION_LED=y

CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x10000

CONFIG_BOOT_SWAP_SAVE_ENCTLV=n

# Enable flash operations
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y

# This must be increased to accommodate the bigger images.
CONFIG_BOOT_MAX_IMG_SECTORS=256

### Decrease footprint by ~4 KB in comparison to CBPRINTF_COMPLETE=y
CONFIG_CBPRINTF_NANO=y
CONFIG_NORDIC_QSPI_NOR=n

CONFIG_SPI=y
CONFIG_SPI_FLASH_AT45=y
CONFIG_SPI_NRFX_RAM_BUFFER_SIZE=32
# If you don't add this when setting CONFIG_SPI=y, you'll get a lot of undefined references from the nrfx spim driver
# E.G. "undefined reference to `z_impl_k_sleep'"
CONFIG_MULTITHREADING=y

CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y

CONFIG_FPROTECT=y
CONFIG_PM=n

CONFIG_FW_INFO=y

CONFIG_BOOT_BOOTSTRAP=n
CONFIG_BOOT_UPGRADE_ONLY=n

### Minimal Configurations ###
CONFIG_ASSERT=n
CONFIG_BOOT_BANNER=n
CONFIG_NO_RUNTIME_CHECKS=y
CONFIG_REBOOT=n
CONFIG_RESET_ON_FATAL_ERROR=n
CONFIG_SIZE_OPTIMIZATIONS=y

# Config logger
CONFIG_LOG=y
CONFIG_LOG_MODE_MINIMAL=y # former CONFIG_MODE_MINIMAL
### Ensure Zephyr logging changes don't use more resources
CONFIG_LOG_DEFAULT_LEVEL=3

# Disable UART Console and enable the RTT console
#CONFIG_UART_CONSOLE=n
#CONFIG_LOG_BACKEND_UART=n

CONFIG_CONSOLE=y
CONFIG_RTT_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y

child_image\mcuboot\boards\*mcuboot_dts.overlay:

/ {
	led {
		compatible = "gpio-leds";
		but_led_1: but_led {
			gpios = <&gpio0 12 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "Permission to turn off the device";
		};
	};

	aliases {
		mcuboot-led0 = &but_led_1;
	};

	chosen {
		nordic,pm-ext-flash = &at45db0;
	};
};

&gpio0 {
	status = "okay";
};

&spi2 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	pinctrl-0 = <&spi2_default>;
	pinctrl-1 = <&spi2_sleep>;
	pinctrl-names = "default", "sleep";
	cs-gpios = < &gpio0 29 GPIO_ACTIVE_LOW >;

	at45db0: at45db161d@0 {
		compatible = "atmel,at45";
		reg = <0>;
		spi-max-frequency = <15000000>;
		jedec-id = [1f 26 00];
		size = <16777216>;
		sector-size = <131072>;
		block-size = <4096>;
		page-size = <512>;
		use-udpd;
		enter-dpd-delay = <2000>;
		exit-dpd-delay = <35000>;
		status = "okay";
	};
};

app/prj.conf:

#CONFIG_SIZE_OPTIMIZATIONS=n
#***********************************************
#				КОНФИГУРАЦИЯ ЗАГРУЗЧИКА
#***********************************************
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_IMG_MANAGER=y
CONFIG_DFU_TARGET_MCUBOOT=y
CONFIG_DFU_TARGET_STREAM=y
CONFIG_STREAM_FLASH_ERASE=y
CONFIG_STREAM_FLASH=y
CONFIG_DFU_TARGET=y

CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
################################################################################
# Enable flash operations.
CONFIG_FLASH_MAP=y

# Enable the LittleFS file system.
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y
CONFIG_PM_PARTITION_REGION_LITTLEFS_EXTERNAL=y
CONFIG_PM_PARTITION_SIZE_LITTLEFS=0x7000
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ ПЕРЕФИРИ
#***********************************************
# Enable UART 
CONFIG_SERIAL=y
CONFIG_UART_ASYNC_API=y
CONFIG_UART_1_INTERRUPT_DRIVEN=y
# Enable SPI
CONFIG_SPI=y
# Enable ADC
CONFIG_ADC=y
# Enable I2C
CONFIG_I2C=y
CONFIG_I2C_NRFX=y
# NFCT pins as GPIOs
CONFIG_NFCT_PINS_AS_GPIOS=y
#***********************************************

#***********************************************
#		КОНФИГУРАЦИЯ СТАТУСНОГО СВЕТОДИОДА 
#***********************************************
# Enable PWM0
CONFIG_PWM=y
CONFIG_LED=y
CONFIG_LED_STATUS=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ C++
#***********************************************
CONFIG_CPLUSPLUS=y
CONFIG_STD_CPP11=y
CONFIG_LIB_CPLUSPLUS=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ ETHERNET
#***********************************************
# Using networking 
CONFIG_NETWORKING=y
CONFIG_NET_L2_ETHERNET=y
CONFIG_NET_L2_ETHERNET_MGMT=y
CONFIG_NET_IF_MAX_IPV4_COUNT=2 

# EnableIntermediate socket offloading layer
CONFIG_NET_SOCKETS_OFFLOAD_DISPATCHER=y
# Enable W5500 Ethernet Controller custom
CONFIG_ETH_W5500_CUSTOM=y

# GSM modem support
CONFIG_MODEM_CUSTOM=y
CONFIG_MODEM_SIM7600=y
CONFIG_MODEM_SIMCOM_SIM7600_RAT_AUTOMATIC=y
CONFIG_MODEM_SIMCOM_SIM7600_EU_SIM=y

# Enable IPv4 support
CONFIG_NET_IPV4=y
CONFIG_NET_IPV6=n

# Enable TCP support
CONFIG_NET_TCP=y

# Enable DHCPv4 support
CONFIG_NET_DHCPV4=y

# Enable MQTT Lib support
CONFIG_MQTT_CUSTOM_LIB=y

# Network configuration
CONFIG_NET_CONFIG_AUTO_INIT=y
CONFIG_NET_CONFIG_SETTINGS=n

# Network connection manager
CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_MGMT_EVENT_INFO=y
CONFIG_NET_CONNECTION_MANAGER=y

# Enable the DNS resolver
CONFIG_DNS_RESOLVER=y
# Enable additional buffers
CONFIG_DNS_RESOLVER_ADDITIONAL_BUF_CTR=1

# RX thread stack size
CONFIG_INIT_STACKS=y
CONFIG_NEWLIB_LIBC=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ EEPROM
#***********************************************
#CONFIG_EEPROM=y
#CONFIG_EEPROM_INIT_PRIORITY=80
#CONFIG_EEPROM_25AA02E48=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ DataFlash
#***********************************************
CONFIG_FLASH=y
CONFIG_SPI_FLASH_AT45=y
CONFIG_FLASH_PAGE_LAYOUT=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ RTC
#***********************************************
CONFIG_COUNTER=y
CONFIG_COUNTER_MAXIM_DS3231_CUST=y
CONFIG_COUNTER_INIT_PRIORITY=65
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ ДРАЙВЕРОВ ЯДРА
#***********************************************
# Enable event objects.
CONFIG_EVENTS=y
# Enable ring buffer.
CONFIG_RING_BUFFER=y
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ WATCHDOG
#***********************************************
# Disable hardware watchdog
#CONFIG_WATCHDOG=y
#CONFIG_WDT_DISABLE_AT_BOOT=y
#CONFIG_TASK_WDT=y
#CONFIG_TASK_WDT_MIN_TIMEOUT=500
#***********************************************

#***********************************************
#				КОНФИГУРАЦИЯ СТЕКОВ ЗАДАЧ
#***********************************************
CONFIG_NET_RX_STACK_SIZE=4096
CONFIG_NET_TCP_WORKQ_STACK_SIZE=4096
CONFIG_NET_CONNECTION_MANAGER_STACK_SIZE=1024
CONFIG_NET_MGMT_EVENT_STACK_SIZE=2048
CONFIG_ETH_W5500_RX_THREAD_STACK_SIZE_CUSTOM=2048
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
#***********************************************

CONFIG_KERNEL_BIN_NAME="Beedigit_hub -DEMO-"

#***********************************************
#				КОНФИГУРАЦИЯ ЛОГИРОВАНИЯ
#***********************************************
# logging
CONFIG_LOG=y
CONFIG_PRINTK=y
CONFIG_LOG_PRINTK=y
# Enable RTT
CONFIG_USE_SEGGER_RTT=y
# Enable Logging support
CONFIG_NET_LOG=y

# Enable Logging support
#CONFIG_NET_IF_LOG_LEVEL_DBG=y
#CONFIG_ETHERNET_LOG_LEVEL_DBG=y
#CONFIG_NET_TCP_LOG_LEVEL_DBG=y
#CONFIG_NET_CONFIG_LOG_LEVEL_DBG=y
#CONFIG_NET_CONNECTION_MANAGER_LOG_LEVEL_DBG=y
#CONFIG_NET_L2_ETHERNET_LOG_LEVEL_DBG=y
#CONFIG_MQTT_LOG_LEVEL_DBG=y
#CONFIG_DNS_RESOLVER_LOG_LEVEL_DBG=y
#CONFIG_NET_DHCPV4_LOG_LEVEL_DBG=y
#CONFIG_NET_SOCKETS_LOG_LEVEL_DBG=y
#***********************************************

#***********************************************
#			АНАЛИЗАТОР ПОТОКОВ
#***********************************************
#CONFIG_THREAD_ANALYZER=y
#CONFIG_THREAD_ANALYZER_USE_PRINTK=y
#CONFIG_THREAD_ANALYZER_AUTO=y
#CONFIG_THREAD_ANALYZER_AUTO_INTERVAL=y
#CONFIG_THREAD_ANALYZER_AUTO_STACK_SIZE=y
#CONFIG_THREAD_NAME=y
#CONFIG_THREAD_RUNTIME_STATS=y
#***********************************************

app/boards/beedigit_nrf52840.dts(custom board):

// Copyright (c) 2022 Nordic Semiconductor ASA
// SPDX-License-Identifier: Apache-2.0

/dts-v1/;
#include <nordic/nrf52840_qiaa.dtsi>
#include "beedigit_nrf52840-pinctrl.dtsi"

/ {
	model = "Beedigit_nrf52840";
	compatible = "BeeDigit,beedigit-nrf52840";

	chosen {
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		nordic,pm-ext-flash = &at45db0;
	};

	zephyr,user {
		handle = < &gpio1 >;
		io-channels = <&adc 0>;	
	};

	switch {
		compatible = "gpio-keys";
		button_pwr: but_pwr {
			gpios = <&gpio0 13 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
			label = "Switch-OFF control";
		};	
	};

	power {
		compatible = "gpio-keys";
		device_pwr: dev_pwr {
			gpios = <&gpio0 15 (GPIO_PULL_DOWN | GPIO_ACTIVE_LOW)>;
			label = "Permission to turn off the device";
		};

		exp_module_pwr: exp_mod_pwr {
			gpios = <&gpio0 14 (GPIO_PULL_DOWN | GPIO_ACTIVE_LOW)>;
			label = "Permission to enable expansion module";
		};
	};

	charger {
		compatible = "gpio-charger";
		stdby: stdby_ch {
			gpios = <&gpio0 9  (GPIO_PULL_UP | GPIO_ACTIVE_HIGH)>;
			label = "CHARGE-STDBY";
		};
		chrg: chrg_ch {
			gpios = <&gpio0 10  (GPIO_PULL_UP | GPIO_ACTIVE_HIGH)>;
			label = "CHARGE-CHRG";
		};
	};

	exp_board {
	 	compatible = "gpio-exp";
		cs1: cs_1 {
			gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
			label = "CS-1";
		};
		cs2: cs_2 {
			gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
			label = "CS-2";
		};
		cs3: cs_3 {
			gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
			label = "CS-3";
		};
		cs4: cs_4 {
			gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
			label = "CS-4";
		};
	};

	aliases {
		cs1 = &cs1;
		cs2 = &cs2;
		cs3 = &cs3;
		cs4 = &cs4;
		stdby = &stdby;
		chrg = &chrg;
		butpwr = &button_pwr;
		mainpwr = &device_pwr;
		exppwr = &exp_module_pwr;
		expboard = &uart1;
		meter = &i2c0;
	};
};

&flash0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x0 0xc000>;
		};
		slot0_partition: partition@c000 {
			label = "image-0";
			reg = <0xc000 0x72000>;
		};
	};
};

&gpiote {
	status = "okay";
};

&gpio0 {
	status = "okay";
};

&gpio1 {
	status = "okay";
};

&pwm0 {
	status = "okay";
	pinctrl-0 = <&pwm0_default>;
	pinctrl-1 = <&pwm0_sleep>;
	pinctrl-names = "default", "sleep";
	ledstatus: ledstatus_dev {
		compatible = "led-status";
		pwms = <&pwm0 0 PWM_KHZ(1) PWM_POLARITY_NORMAL>;
		label = "STATUS-LED";
	};
};

&adc {
	status = "okay";
};

&adc {
	#address-cells = <1>;
	#size-cells = <0>;
	
	channel@0 {
		reg = <0>;
		zephyr,gain = "ADC_GAIN_1_5";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,oversampling = <8>;
		zephyr,input-positive = <NRF_SAADC_AIN2>;	
	};
};

&spi1 {
		compatible = "nordic,nrf-spim";
		status = "okay";
		pinctrl-0 = <&spi1_default>;
		pinctrl-1 = <&spi1_sleep>;
		pinctrl-names = "default", "sleep";
		cs-gpios = < &gpio0 8 GPIO_ACTIVE_LOW >,
				   < &gpio0 5 GPIO_ACTIVE_LOW >;

		w5500: w5500_dev@0{
			compatible = "wiznet,w5500custom";
			status = "okay";
			reg = < 0 >;
			int-gpios = < &gpio0 11 GPIO_ACTIVE_LOW >;
			reset-gpios = < &gpio0 6 GPIO_ACTIVE_HIGH >;
			spi-max-frequency = < 30000000 >;
		};

		mac48: mac48_dev@1{
			compatible = "microchip,25aa02e48";
			reg = < 1 >;
			spi-max-frequency = < 6000000 >;
		};
};

&spi2 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	pinctrl-0 = <&spi2_default>;
	pinctrl-1 = <&spi2_sleep>;
	pinctrl-names = "default", "sleep";
	cs-gpios = < &gpio0 29 GPIO_ACTIVE_LOW >;

	at45db0: at45db161d@0 {
		compatible = "atmel,at45";
		reg = <0>;
		spi-max-frequency = <15000000>;
		jedec-id = [1f 26 00];
		size = <16777216>;
		sector-size = <131072>;
		block-size = <4096>;
		page-size = <512>;
		use-udpd;
		enter-dpd-delay = <2000>;
		exit-dpd-delay = <35000>;
		status = "okay";
	};
};

&at45db0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		slot1_partition: partition@0 {
			label = "image-1";
			reg = <0x000000000 0x0000e8000>;
		};
	};
};

&uart0 {
	compatible = "nordic,nrf-uarte";
	status = "okay";
	current-speed = <115200>;
	pinctrl-0 = <&uart0_default>;
	pinctrl-1 = <&uart0_sleep>;
	pinctrl-names = "default", "sleep";
	sim7600: sim7600_dev {
		compatible = "simcom,sim7600";
		mdm-power-gpios = < &gpio0 25 GPIO_ACTIVE_LOW >;
		mdm-reset-gpios = < &gpio0 24 GPIO_ACTIVE_LOW >;
	};
};

&uart1 {
	compatible = "nordic,nrf-uarte";
	status = "okay";
	current-speed = <9600>;
	pinctrl-0 = <&uart1_default>;
	pinctrl-1 = <&uart1_sleep>;
	pinctrl-names = "default", "sleep";
};

&i2c0 { 
	compatible = "nordic,nrf-twim";
	status = "okay";
	pinctrl-0 = <&i2c0_default>;
	pinctrl-1 = <&i2c0_sleep>;
	pinctrl-names = "default", "sleep";
	ds3231: ds3231_dev@68 {
		compatible = "maxim,ds3231cust";
		reg = <0x68>;
	};
	i2c-device@48 {
		compatible = "i2c-device";
		reg = <0x48>;
	};		
};

I see this message in debug:

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Tue, 15 Aug 2023 13:37:24 GMT

Hi,

What sample are you using?

Did you copy the app/boards/*board.conf & *board.ovelay and child_image\mcuboot\boards\*board.config & *board.ovelay to that sample?

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Tue, 15 Aug 2023 12:09:38 GMT

Now I'm having errors when selecting a project.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Tue, 15 Aug 2023 12:03:25 GMT

Thank you very much for your help! I now see that the secondary partition is placed on the external flash.

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Mon, 14 Aug 2023 17:44:36 GMT

Placing MCUboot secondary in the external flash by the partition manager would only be enabled by other dependencies options. See the Dependencies of CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY.

You can check .config under build/zephyr to see whether it is enabled or not.

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Mon, 14 Aug 2023 14:26:55 GMT

I'm using a custom board, should I add the use of a secondary section there?

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Mon, 14 Aug 2023 12:51:23 GMT

No, you could let the partition manager handle it.

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Mon, 14 Aug 2023 12:20:37 GMT

Do I need to add pm_static.yml to the root of the project?

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Fri, 11 Aug 2023 15:41:24 GMT

Hi,

You need to add the overlay with pm-ext-flash to both the application and MCUboot. See this post.

To use SPI external memory, it needs the following configs

for child_image\mcuboot\boards\*board.config

# MCUboot requires a large stack size, otherwise an MPU fault will occur
CONFIG_MAIN_STACK_SIZE=10240

CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x10000

# Enable flash operations
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y

# This must be increased to accommodate the bigger images.
CONFIG_BOOT_MAX_IMG_SECTORS=256

CONFIG_LOG=y
CONFIG_LOG_MODE_MINIMAL=y 

### Ensure Zephyr logging changes don't use more resources
CONFIG_LOG_DEFAULT_LEVEL=0

### Decrease footprint by ~4 KB in comparison to CBPRINTF_COMPLETE=y
CONFIG_CBPRINTF_NANO=y

CONFIG_NORDIC_QSPI_NOR=n

CONFIG_SPI=y
CONFIG_SPI_NOR=y
CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096

# If you don't add this when setting CONFIG_SPI=y, you'll get a lot of undefined references from the nrfx spim driver
# E.G. "undefined reference to `z_impl_k_sleep'"
CONFIG_MULTITHREADING=y

CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y

for application external_flash\boards\*board.conf

#
# Copyright (c) 2021 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
################################################################################

# SPI Flash
CONFIG_SPI=y
CONFIG_SPI_NOR=y
CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096

CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=y
################################################################################
# Enable flash operations.
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y

# Enable the LittleFS file system.
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y
CONFIG_PM_PARTITION_REGION_LITTLEFS_EXTERNAL=y
CONFIG_PM_PARTITION_SIZE_LITTLEFS=0x7000

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Fri, 11 Aug 2023 13:20:53 GMT

RE: Use external flash (AT45DB0) with MCUBOOT

Amanda Hsieh — Fri, 11 Aug 2023 12:39:57 GMT

Hi,

Please run the following command under build folder:

ninja partition_manager_report

And then post the memory layout. Let's see whether the "mcuboot_secondary" is on the external flash or not.

-Amanda H.

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Fri, 11 Aug 2023 08:19:07 GMT

I need "mcuboot_secondary" to be on external flash (AT45DB0).

RE: Use external flash (AT45DB0) with MCUBOOT

SavchenkoIvan — Fri, 11 Aug 2023 08:02:16 GMT

Thanks for the quick feedback!

I did as you wrote. The project started building without errors.

But I see that the flash is still used by the nRF52810 to write the firmware image:

I need to place specify that the image will be placed on an external flash (AT45DB0).
I can give my project to you, maybe it will help you?