Hello,
I am using the nrf52840dk_nrf52840 with NCS v1.7.0. I am trying to use the external memory (MX25R64) to host the mcuboot_secondary slot. Then, the primary slot could be twice as large and FOTA would still happen correctly using that external memory.
I went through a bunch of documentation and similar thread but I still cannot figure out what I am doing wrong.
So, I started from the external_flash test in "nrf\tests\modules\mcuboot\external_flash". I then added what make sense until I ended up with:
- boards/nrf52840dk_nrf52840.overlay:
/ {
chosen {
nordic,pm-ext-flash = &mx25r64;
};
};
- child_image/mcuboot.conf
# MCUboot requires a large stack size, otherwise an MPU fault will occur CONFIG_MAIN_STACK_SIZE=10240 # Set the size here so that the size of MCUBOOT_SECONDARY won't change # if the default value changes. CONFIG_PM_PARTITION_SIZE_MCUBOOT=0x20000 CONFIG_DEBUG_OPTIMIZATIONS=y # Enable flash operations CONFIG_FLASH=y # This value must match the size of the MCUboot primary partition. CONFIG_PM_PARTITION_SIZE_MCUBOOT_SECONDARY=0xe0000 # This must be increased to accommodate the bigger images. CONFIG_BOOT_MAX_IMG_SECTORS=256 # Enable serial recovery CONFIG_UART_CONSOLE=n CONFIG_CONSOLE_HANDLER=n CONFIG_MCUBOOT_SERIAL=y CONFIG_MCUBOOT_SERIAL_DIRECT_IMAGE_UPLOAD=y CONFIG_NORDIC_QSPI_NOR=y CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096 CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=16
- src/main.c: It just registers the os_mgmt and img_mgmt group, then initialize ble and register smp.
- CMakeLists.txt
# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.13.1)
set(BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
set(mcuboot_DTC_OVERLAY_FILE "${CMAKE_CURRENT_SOURCE_DIR}/boards/${BOARD}.overlay")
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(peripheral_hr)
FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE
${app_sources}
)
zephyr_library_include_directories(${ZEPHYR_BASE}/samples/bluetooth)
- prj.conf
# Deactivate DEBUG/LOG for production builds CONFIG_SERIAL=y # Logging CONFIG_LOG=y CONFIG_UART_CONSOLE=y #### BLE #### # Activate the BLE layer, set as peripheral CONFIG_BT=y CONFIG_BT_SMP=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_CTLR=y CONFIG_BT_CTLR_PHY_2M=y CONFIG_BT_GATT_CLIENT=y # Set up the Services CONFIG_BT_DIS=y CONFIG_BT_DIS_PNP=n # Allow another device that unpaired to pair again CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE=y #### FLASH #### # Configure stack size for process CONFIG_MAIN_STACK_SIZE=8192 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=8192 ##### MCUBOOT ##### # Enable mcumgr. #Turn to y if BOOTLOADER CONFIG_MCUMGR=y # Ensure an MCUboot-compatible binary is generated. MCUboot is the upgradable bootloader. #Turn to y if BOOTLOADER CONFIG_BOOTLOADER_MCUBOOT=y # Enable most core commands. #Turn to y if BOOTLOADER CONFIG_MCUMGR_CMD_IMG_MGMT=y CONFIG_MCUMGR_CMD_OS_MGMT=y # Enable the Bluetooth (unauthenticated) mcumgr transports. #Turn to y if BOOTLOADER CONFIG_MCUMGR_SMP_BT=y CONFIG_MCUMGR_SMP_BT_AUTHEN=n # Generate a confirmed image directly CONFIG_MCUBOOT_GENERATE_CONFIRMED_IMAGE=y # This value must match the size of the MCUboot primary partition CONFIG_PM_PARTITION_SIZE_MCUBOOT_SECONDARY=0xf0000 # Enable flash operations CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_NORDIC_QSPI_NOR=y CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096 CONFIG_NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE=4
What happens is that when I try to test and confirm a new .bin, nothing happens. The serial line just shows this line: "<inf> mcuboot_util: Swap type: none". Digging deeper, it seems that this function poses problem (in bootloader/mcuboot/boot/bootutil/src/bootutil_public.c):
int
boot_magic_compatible_check(uint8_t tbl_val, uint8_t val)
{
BOOT_LOG_INF("Magic combatibility check: tbl_val = %d, val = %d", tbl_val, val);
switch (tbl_val) {
case BOOT_MAGIC_ANY:
return 1;
case BOOT_MAGIC_NOTGOOD:
return val != BOOT_MAGIC_GOOD;
default:
return tbl_val == val;
}
}
I added the log and it showed this:
<inf> mcuboot_util: Magic combatibility check: tbl_val = 4, val = 3 <inf> mcuboot_util: Magic combatibility check: tbl_val = 1, val = 3 <inf> mcuboot_util: Magic combatibility check: tbl_val = 4, val = 3 <inf> mcuboot_util: Magic combatibility check: tbl_val = 1, val = 3 <inf> mcuboot_util: Magic combatibility check: tbl_val = 1, val = 3
Looking at the build/partition.yml, I have this:
app:
address: 0x20200
end_address: 0x100000
region: flash_primary
size: 0xdfe00
external_flash:
address: 0xe0000
end_address: 0x800000
region: external_flash
size: 0x720000
mcuboot:
address: 0x0
end_address: 0x20000
placement:
before:
- mcuboot_primary
region: flash_primary
size: 0x20000
mcuboot_pad:
address: 0x20000
end_address: 0x20200
placement:
align:
start: 0x1000
before:
- mcuboot_primary_app
region: flash_primary
size: 0x200
mcuboot_primary:
address: 0x20000
end_address: 0x100000
orig_span: &id001
- mcuboot_pad
- app
region: flash_primary
size: 0xe0000
span: *id001
mcuboot_primary_app:
address: 0x20200
end_address: 0x100000
orig_span: &id002
- app
region: flash_primary
size: 0xdfe00
span: *id002
mcuboot_secondary:
address: 0x0
device: MX25R64
end_address: 0xe0000
placement:
align:
start: 0x4
region: external_flash
size: 0xe0000
sram_primary:
address: 0x20000000
end_address: 0x20040000
region: sram_primary
size: 0x40000
This seems to make sense to me but then again I am not sure.
So, my question is what am I doing wrong?
I will be grateful for any help. You will find that sample attached. Whenever it ends up working, I'll link an updated sample.fota_external_flash_spi.zip
