samples: mgmt: mcumgr: smp_svr: Add RAM load configuration

Adds configuration for booting this sample in RAM load mode on
nrf52840dk

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

samples/subsys/mgmt/mcumgr/smp_svr/boards/nrf52840dk_nrf52840_ram_load.conf

@@ -0,0 +1 @@
+CONFIG_RETAINED_MEM_NRF_GPREGRET=n

samples/subsys/mgmt/mcumgr/smp_svr/boards/nrf52840dk_nrf52840_ram_load.overlay

@@ -0,0 +1,17 @@
+/delete-node/ &sram0;
+
+#include "../sysbuild/nrf52840dk_nrf52840_mcuboot_ram_load.overlay"
+
+/ {
+	chosen {
+		zephyr,flash = &flash0;
+		/delete-property/ zephyr,code-partition;
+	};
+
+	soc {
+		sram0: memory@20006000 {
+			compatible = "mmio-sram";
+			reg = <0x20006000 DT_SIZE_K(200)>;
+		};
+	};
+};

samples/subsys/mgmt/mcumgr/smp_svr/prj_ram_load.conf

@@ -0,0 +1,48 @@
+# Enable MCUmgr and dependencies.
+CONFIG_NET_BUF=y
+CONFIG_ZCBOR=y
+CONFIG_CRC=y
+CONFIG_MCUMGR=y
+CONFIG_STREAM_FLASH=y
+CONFIG_FLASH_MAP=y
+
+# Some command handlers require a large stack.
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2304
+CONFIG_MAIN_STACK_SIZE=2048
+
+# Ensure an MCUboot-compatible binary is generated.
+CONFIG_BOOTLOADER_MCUBOOT=y
+
+# Enable flash operations.
+CONFIG_FLASH=y
+
+# Required by the `taskstat` command.
+CONFIG_THREAD_MONITOR=y
+
+# Support for taskstat command
+CONFIG_MCUMGR_GRP_OS_TASKSTAT=y
+
+# Enable statistics and statistic names.
+CONFIG_STATS=y
+CONFIG_STATS_NAMES=y
+
+# Enable most core commands.
+CONFIG_FLASH=y
+CONFIG_IMG_MANAGER=y
+CONFIG_MCUMGR_GRP_IMG=y
+CONFIG_MCUMGR_GRP_OS=y
+CONFIG_MCUMGR_GRP_STAT=y
+
+# Enable logging
+CONFIG_LOG=y
+CONFIG_MCUBOOT_UTIL_LOG_LEVEL_WRN=y
+
+# Disable debug logging
+CONFIG_LOG_MAX_LEVEL=3
+
+# Enable retained memory and retention
+CONFIG_RETAINED_MEM=y
+CONFIG_RETENTION=y
+CONFIG_RETAINED_MEM_ZEPHYR_RAM=y
+CONFIG_RETENTION_BOOTLOADER_INFO=y
+CONFIG_RETENTION_BOOTLOADER_INFO_TYPE_MCUBOOT=y

samples/subsys/mgmt/mcumgr/smp_svr/sample.yaml

@@ -158,3 +158,26 @@ tests:
       - mg100
     integration_platforms:
       - nrf52840dk/nrf52840
+  sample.mcumgr.smp_svr.ram_load:
+    sysbuild: true
+    extra_args: FILE_SUFFIX="ram_load"
+    platform_allow:
+      - nrf52840dk/nrf52840
+    integration_platforms:
+      - nrf52840dk/nrf52840
+  sample.mcumgr.smp_svr.ram_load.serial:
+    sysbuild: true
+    extra_args: FILE_SUFFIX="ram_load"
+                EXTRA_CONF_FILE="overlay-serial.conf"
+    platform_allow:
+      - nrf52840dk/nrf52840
+    integration_platforms:
+      - nrf52840dk/nrf52840
+  sample.mcumgr.smp_svr.ram_load.serial.fs.shell:
+    sysbuild: true
+    extra_args: FILE_SUFFIX="ram_load"
+                EXTRA_CONF_FILE="overlay-serial.conf;overlay-fs.conf;overlay-shell.conf"
+    platform_allow:
+      - nrf52840dk/nrf52840
+    integration_platforms:
+      - nrf52840dk/nrf52840

samples/subsys/mgmt/mcumgr/smp_svr/sysbuild/CMakeLists.txt

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: Apache-2.0
+
+if("${FILE_SUFFIX}" STREQUAL "ram_load")
+  set(mcuboot_EXTRA_DTC_OVERLAY_FILE "${CMAKE_CURRENT_LIST_DIR}/nrf52840dk_nrf52840_mcuboot_ram_load.overlay" CACHE INTERNAL "" FORCE)
+endif()
+
+find_package(Sysbuild REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(sysbuild LANGUAGES)

samples/subsys/mgmt/mcumgr/smp_svr/sysbuild/mcuboot_ram_load.conf

@@ -0,0 +1,9 @@
+CONFIG_SRAM_SIZE=30
+CONFIG_RETAINED_MEM=y
+CONFIG_RETENTION=y
+CONFIG_RETAINED_MEM_ZEPHYR_RAM=y
+CONFIG_BOOT_SHARE_DATA=y
+CONFIG_BOOT_SHARE_DATA_BOOTINFO=y
+CONFIG_BOOT_SHARE_BACKEND_RETENTION=y
+CONFIG_FLASH=y
+CONFIG_FLASH_MAP=y

samples/subsys/mgmt/mcumgr/smp_svr/sysbuild/nrf52840dk_nrf52840_mcuboot_ram_load.overlay

@@ -0,0 +1,25 @@
+/ {
+	sram@2003F000 {
+		compatible = "zephyr,memory-region", "mmio-sram";
+		reg = <0x2003F000 DT_SIZE_K(1)>;
+		zephyr,memory-region = "RetainedMem";
+		status = "okay";
+
+		retainedmem {
+			compatible = "zephyr,retained-ram";
+			status = "okay";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			boot_info0: boot_info@0 {
+				compatible = "zephyr,retention";
+				status = "okay";
+				reg = <0x0 0x100>;
+			};
+		};
+	};
+
+	chosen {
+		zephyr,bootloader-info = &boot_info0;
+	};
+};

samples/subsys/mgmt/mcumgr/smp_svr/sysbuild_ram_load.conf

@@ -0,0 +1,3 @@
+# Enable MCUboot bootloader support and use RAM load mode
+SB_CONFIG_BOOTLOADER_MCUBOOT=y
+SB_CONFIG_MCUBOOT_MODE_RAM_LOAD=y