[nrfconnect] Introduced several platform configuration fixes

config/nrfconnect/app/enable-gnu-std.cmake

@@ -1,6 +1,5 @@
 add_library(gnu17 INTERFACE)
 target_compile_options(gnu17
     INTERFACE 
-        $<$<COMPILE_LANGUAGE:CXX>:-std=gnu++17>
-        -D_SYS__PTHREADTYPES_H_)
+        $<$<COMPILE_LANGUAGE:CXX>:-std=gnu++17>)
 target_link_libraries(app PRIVATE gnu17)

config/nrfconnect/chip-module/Kconfig

@@ -302,4 +302,9 @@ config CHIP_FACTORY_RESET_ON_KEY_MIGRATION_FAILURE
 	  Perform factory reset of the device if the operational key for Fabric has not been migrated
 	  properly to PSA ITS storage.
 
+config CHIP_PERSISTENT_SUBSCRIPTIONS
+	default n
+	# selecting experimental for this feature since there is an issue with multiple controllers.
+	select EXPERIMENTAL
+
 endif # CHIP

config/nrfconnect/chip-module/Kconfig.defaults

@@ -24,6 +24,10 @@ if CHIP
 # System configuration
 # ==============================================================================
 
+choice LIBC_IMPLEMENTATION
+    default NEWLIB_LIBC
+endchoice
+
 config ASSERT
     default y
 
@@ -318,13 +322,13 @@ if PSA_CRYPTO_DRIVER_CC3XX && PSA_CRYPTO_DRIVER_OBERON
 config PSA_USE_CC3XX_HASH_DRIVER
     default n
 
-endif
+endif # PSA_CRYPTO_DRIVER_CC3XX && PSA_CRYPTO_DRIVER_OBERON
 
 # Spake2+ support
 config MBEDTLS_MD_C
     default y
 
-endif
+endif # CHIP_CRYPTO_PSA
 
 if !CHIP_CRYPTO_PSA
 
@@ -367,7 +371,7 @@ config MBEDTLS_ECP_C
 config MBEDTLS_ECP_DP_SECP256R1_ENABLED
     default y
 
-endif
+endif # !CHIP_CRYPTO_PSA
 
 config MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
     default n if CHIP_WIFI
@@ -487,4 +491,4 @@ config OPENTHREAD_SHELL
 
 endif # SHELL
 
-endif
+endif # CHIP

config/nrfconnect/chip-module/Kconfig.features

@@ -42,15 +42,13 @@ config CHIP_WIFI
 
 config CHIP_QSPI_NOR
 	bool "Enable QSPI NOR feature set"
+	imply NORDIC_QSPI_NOR
 	help
 	  Enables QSPI NOR flash with a set of options for configuring pages and
 	  buffer sizes.
 
 if CHIP_QSPI_NOR
 
-config NORDIC_QSPI_NOR
-	default y
-
 config NORDIC_QSPI_NOR_STACK_WRITE_BUFFER_SIZE
 	default 16
 

config/nrfconnect/chip-module/Kconfig.mcuboot.defaults

@@ -19,16 +19,7 @@
 config MAIN_STACK_SIZE
     default 10240
 
-config BOOT_SWAP_SAVE_ENCTLV
-    default n
-
-config BOOT_ENCRYPT_RSA
-    default n
-
-config BOOT_ENCRYPT_EC256
-    default n
-
-config BOOT_ENCRYPT_X25519
+config BOOT_ENCRYPT_IMAGE
     default n
 
 config BOOT_BOOTSTRAP
@@ -53,9 +44,6 @@ if BOARD_NRF7002DK_NRF5340_CPUAPP
 config SPI
     default y
 
-config SPI_NOR
-    default y
-
 choice SPI_NOR_SFDP
 	default SPI_NOR_SFDP_DEVICETREE
 endchoice
@@ -74,9 +62,6 @@ endif
 # All boards beside nRF7002DK use QSPI NOR external flash
 if BOARD_NRF5340DK_NRF5340_CPUAPP || BOARD_NRF52840DK_NRF52840
 
-config NORDIC_QSPI_NOR
-    default y
-
 config NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE
     default 4096
 

config/zephyr/Kconfig

@@ -309,7 +309,8 @@ config CHIP_PROJECT_CONFIG
 
 config CHIP_ENABLE_DNSSD_SRP
 	bool "OpenThread Service Registration Protocol"
-	default y if NET_L2_OPENTHREAD
+	default y
+	depends on NET_L2_OPENTHREAD
 	imply OPENTHREAD_ECDSA
 	imply OPENTHREAD_SRP_CLIENT
 	help
@@ -318,7 +319,8 @@ config CHIP_ENABLE_DNSSD_SRP
 
 config CHIP_ENABLE_DNS_CLIENT
 	bool "OpenThread DNS client"
-	default y if NET_L2_OPENTHREAD
+	default y
+	depends on NET_L2_OPENTHREAD
 	imply OPENTHREAD_DNS_CLIENT
 	help
 	  Enables using the OpenThread DNS client for the Matter service discovery.
@@ -413,6 +415,7 @@ config CHIP_THREAD_SSED
 
 config CHIP_OPENTHREAD_CONFIG
 	string "Custom OpenThread configuration file"
+	depends on NET_L2_OPENTHREAD
 	help
 	  Provides a path to an OpenThread configuration file. The path can be
 	  either absolute or relative to the application directory. When this option

src/platform/Zephyr/ConfigurationManagerImpl.cpp

@@ -40,6 +40,10 @@
 #include <zephyr/settings/settings.h>
 #endif
 
+#ifdef CONFIG_NET_L2_OPENTHREAD
+#include <platform/ThreadStackManager.h>
+#endif
+
 namespace chip {
 namespace DeviceLayer {
 
@@ -179,6 +183,11 @@ void ConfigurationManagerImpl::DoFactoryReset(intptr_t arg)
 {
     ChipLogProgress(DeviceLayer, "Performing factory reset");
 
+// Lock the Thread stack to avoid unwanted interaction with settings NVS during factory reset.
+#ifdef CONFIG_NET_L2_OPENTHREAD
+    ThreadStackMgr().LockThreadStack();
+#endif
+
 #ifdef CONFIG_CHIP_FACTORY_RESET_ERASE_NVS
     void * storage = nullptr;
     int status     = settings_storage_get(&storage);

src/platform/nrfconnect/CHIPDevicePlatformConfig.h

@@ -161,7 +161,11 @@
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_PRIORITY
 
 #ifndef CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
+#if defined(CONFIG_LTO)
+#define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 10240
+#else
 #define CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE 6144
+#endif // CONFIG_LTO
 #endif // CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE
 
 #define CHIP_DEVICE_CONFIG_MAX_EVENT_QUEUE_SIZE 64

src/platform/nrfconnect/SystemPlatformConfig.h

@@ -48,7 +48,7 @@ struct ChipDeviceEvent;
 #define CHIP_SYSTEM_CONFIG_USE_SOCKETS 1
 
 #ifndef CONFIG_ARCH_POSIX
-#define CHIP_SYSTEM_CONFIG_PACKETBUFFER_POOL_SIZE 8
+#define CHIP_SYSTEM_CONFIG_PACKETBUFFER_POOL_SIZE 15
 #endif
 
 #ifndef CHIP_SYSTEM_CONFIG_PACKETBUFFER_CAPACITY_MAX