samples: cellular: Disable PM

boards/nordic/thingy91x/thingy91x_nrf9151_partition.dtsi

@@ -12,7 +12,6 @@
 	 *   0x0003_0000  Primary secure image       ( 32 kB)
 	 *   0x0003_8000  Primary non-secure image   (800 kB)
 	 */
-
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
@@ -63,7 +62,6 @@
 	 * 0x004d_0000  Settings                      (    8 kB)
 	 * 0x004d_2000  Free                          (27832 kB)
 	 */
-
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
@@ -98,7 +96,7 @@
 			reg = <0x004d0000 0x2000>;
 		};
 
-		external_flash_partition: partition@4d20000 {
+		external_flash_partition: partition@4d2000 {
 			label = "external_flash";
 			reg = <0x0004d2000 0x1b2e000>;
 		};

doc/nrf/libraries/dfu/dfu_target.rst

@@ -155,8 +155,37 @@ The MCUboot target will then use the :ref:`zephyr:settings_api` subsystem in Zep
 Using a dedicated partition for full modem upgrades
 ===================================================
 
-External flash partitions require the chosen node ``nordic,pm-ext-flash`` to be set to the external flash device in devicetree, see :ref:`partition_manager` for details.
-When ``nordic,pm-ext-flash`` is set, the :ref:`partition_manager` will add the partition ``fmfu_storage`` to the external flash region.
+Configure a dedicated storage partition for full modem firmware updates:
+
+* If you enable Partition Manager (:kconfig:option:`CONFIG_PARTITION_MANAGER_ENABLED`):
+
+  Set the chosen node ``nordic,pm-ext-flash`` to the external flash device in devicetree.
+  The Partition Manager automatically creates the ``fmfu_storage`` partition in the external flash region.
+  See :ref:`partition_manager` for details.
+
+* If you do not enable Partition Manager (DTS-based partitioning):
+
+  Define a fixed partition in devicetree and set the ``nordic,fmfu_storage_partition`` chosen property to point to the defined partition:
+
+  .. code-block:: devicetree
+
+    / {
+      chosen {
+        nordic,fmfu_storage_partition = &fmfu_storage_partition;
+      };
+    };
+
+    &your_external_flash {
+      partitions {
+        compatible = "fixed-partitions";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        fmfu_storage_partition: partition@0 {
+          reg = <0x0 0x400000>;
+        };
+      };
+    };
 
 
 API documentation

dts/common/nordic/nrf91_partition_sram.dtsi

@@ -6,15 +6,14 @@
 
 &sram0 {
 	/*
-	 * 0x2000_0000  Secure RAM                   (  32 kB)
-	 * 0x2000_8000  Non-secure RAM area          ( 224 kB)
-	 *   0x2000_8000  Modem shared area          (  18 kB)
-	 *     0x2000_8000  control                  (1832 B)
-	 *     0x2000_8728  app -> cell              (8408 B)
-	 *     0x2000_a800  cell -> app              (   8 kB)
-	 *   0x2000_c800  Application RAM            ( 206 kB)
+	 * 0x2000_0000  Secure RAM                      (   32 kB)
+	 * 0x2000_8000  Non-secure RAM area             (  224 kB)
+	 *   0x2000_8000  Modem shared area             ( 17768 B)
+	 *     0x2000_8000  control                     (  1256 B)
+	 *     0x2000_84e8  app -> cell                 (  8320 B)
+	 *     0x2000_a568  cell -> app                 (    8 kB)
+	 *   0x2000_c568  Application RAM               (211608 B)
 	 */
-
 	sram0_s: sram@0 {
 		reg = <0x0 0x8000>;
 	};
@@ -28,30 +27,30 @@
 		/* Must be in first 128 kB of RAM. */
 		sram0_ns_modem: sram0_ns@0 {
 			/* Modem (shared) memory */
-			reg = <0x0 0x4800>;
+			reg = <0x0 0x4568>;
 			#address-cells = <1>;
 			#size-cells = <1>;
-			ranges = <0x0 0x0 0x4800>;
+			ranges = <0x0 0x0 0x4568>;
 
 			cpuapp_cpucell_ipc_shm_ctrl: sram0_ns_modem@0 {
 				/* Modem IPC control */
-				reg = <0x0 0x728>;
+				reg = <0x0 0x4e8>;
 			};
 
-			cpuapp_cpucell_ipc_shm_heap: sram0_ns_modem@728 {
+			cpuapp_cpucell_ipc_shm_heap: sram0_ns_modem@4e8 {
 				/* Modem IPC transmit */
-				reg = <0x728 0x20d8>;
+				reg = <0x4e8 0x2080>;
 			};
 
-			cpucell_cpuapp_ipc_shm_heap: sram0_ns_modem@2800 {
+			cpucell_cpuapp_ipc_shm_heap: sram0_ns_modem@2568 {
 				/* Modem IPC receive */
-				reg = <0x2800 0x2000>;
+				reg = <0x2568 0x2000>;
 			};
 		};
 
-		sram0_ns_app: sram0_ns@4800 {
+		sram0_ns_app: sram0_ns@4568 {
 			/* Non-Secure application memory */
-			reg = <0x4800 0x33800>;
+			reg = <0x4568 0x33a98>;
 		};
 	};
 };

dts/samples/cellular/nrf91_bootloader_partitions.dtsi

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/delete-node/ &boot_partition;
+/delete-node/ &slot0_partition;
+/delete-node/ &slot1_partition;
+/delete-node/ &tfm_ps_partition;
+/delete-node/ &tfm_its_partition;
+/delete-node/ &tfm_otp_partition;
+/delete-node/ &storage_partition;
+
+&flash0 {
+	/*
+	 * 0x0000_0000  MCUboot                        ( 64 kB)
+	 * 0x0001_0000  Primary area                   (448 kB)
+	 *   0x0001_0000  Primary secure image         ( 32 kB)
+	 *   0x0001_8000  Primary non-secure image     (416 kB)
+	 * 0x0008_0000  Secondary area                 (448 kB)
+	 *   0x0008_0000  Secondary secure image       ( 32 kB)
+	 *   0x0008_8000  Secondary non-secure image   (416 kB)
+	 * 0x000f_0000 Settings storage                ( 64 kB)
+	 */
+	partitions {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		boot_partition: partition@0 {
+			compatible = "zephyr,mapped-partition";
+			label = "mcuboot";
+			reg = <0x00000000 0x10000>;
+		};
+
+		slot0_partition: partition@10000 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-0";
+			reg = <0x00010000 0x70000>;
+			ranges = <0x0 0x00010000 0x70000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			slot0_s_partition: partition@0 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-0-secure";
+				reg = <0x00000000 0x8000>;
+			};
+
+			slot0_ns_partition: partition@8000 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-0-nonsecure";
+				reg = <0x00008000 0x68000>;
+			};
+		};
+
+		slot1_partition: partition@80000 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-1";
+			reg = <0x00080000 0x70000>;
+			ranges = <0x0 0x00080000 0x70000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			slot1_s_partition: partition@0 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-1-secure";
+				reg = <0x00000000 0x8000>;
+			};
+
+			slot1_ns_partition: partition@8000 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-1-nonsecure";
+				reg = <0x00008000 0x68000>;
+			};
+		};
+
+		storage_partition: partition@f0000 {
+			compatible = "zephyr,mapped-partition";
+			label = "storage";
+			reg = <0x000f0000 0x10000>;
+		};
+	};
+};

dts/samples/cellular/nrf91_crypto_partitions.dtsi

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/delete-node/ &boot_partition;
+/delete-node/ &slot0_partition;
+/delete-node/ &slot1_partition;
+
+&flash0 {
+	/*
+	 * 0x0000_0000  Primary area			(960 kB)
+	 *   0x0000_0000  Primary secure image		(384 kB)
+	 *   0x0006_0000  Primary non-secure image	(576 kB)
+	 *
+	 * Unchanged:
+	 * 0x000f_0000 Protected Storage Area           ( 16 KB)
+	 * 0x000f_4000 Internal Trusted Storage Area    (  8 KB)
+	 * 0x000f_6000 OTP / NV counters area           (  8 KB)
+	 * 0x000f_8000  Settings storage		( 32 kB)
+	 */
+	partitions {
+		ranges;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		slot0_partition: partition@0 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-0";
+			reg = <0x00000000 0xf0000>;
+			ranges = <0x0 0x00000000 0xf0000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			slot0_s_partition: partition@0 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-0-secure";
+				reg = <0x00000000 0x60000>;
+			};
+
+			slot0_ns_partition: partition@60000 {
+				compatible = "zephyr,mapped-partition";
+				label = "image-0-nonsecure";
+				reg = <0x00060000 0x90000>;
+			};
+		};
+	};
+};

dts/samples/cellular/nrf91_immutable_bootloader_partitions.dtsi

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/delete-node/ &boot_partition;
+/delete-node/ &slot0_partition;
+/delete-node/ &slot1_partition;
+/delete-node/ &tfm_ps_partition;
+/delete-node/ &tfm_its_partition;
+/delete-node/ &tfm_otp_partition;
+/delete-node/ &storage_partition;
+
+&flash0 {
+	/*
+	 * 0x0000_0000  B0 (NSIB)                    ( 32 kB)
+	 * 0x0000_8000  Primary updatable MCUboot    ( 64 kB)
+	 * 0x0001_8000  Secondary updatable MCUboot  ( 64 kB)
+	 * 0x0002_8000  Primary image area           (416 kB)
+	 *   0x0002_8000  Primary secure image       ( 32 kB)
+	 *   0x0003_0000  Primary non-secure image   (384 kB)
+	 * 0x0009_0000  Secundary image area         (416 kB)
+	 *   0x0009_0000  Secundary secure image     ( 32 kB)
+	 *   0x0009_8000  Secundary non-secure image (384 kB)
+	 * 0x000f_8000  Settings storage             ( 32 kB)
+	 */
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		b0_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x8000>;
+		};
+
+		s0_partition: partition@8000 {
+			label = "mcuboot-0";
+			reg = <0x00008000 0x10000>;
+		};
+
+		s1_partition: partition@18000 {
+			label = "mcuboot-1";
+			reg = <0x00018000 0x10000>;
+		};
+
+		slot0_partition: partition@28000 {
+			compatible = "fixed-subpartitions";
+			label = "image-0";
+			reg = <0x00028000 0x68000>;
+			ranges = <0x0 0x00028000 0x68000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			slot0_s_partition: partition@0 {
+				label = "image-0-secure";
+				reg = <0x00000000 0x8000>;
+			};
+
+			slot0_ns_partition: partition@8000 {
+				label = "image-0-nonsecure";
+				reg = <0x00008000 0x60000>;
+			};
+		};
+
+		slot1_partition: partition@90000 {
+			compatible = "fixed-subpartitions";
+			label = "image-1";
+			reg = <0x00090000 0x68000>;
+			ranges = <0x0 0x00090000 0x68000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			slot1_s_partition: partition@0 {
+				label = "image-1-secure";
+				reg = <0x00000000 0x8000>;
+			};
+
+			slot1_ns_partition: partition@8000 {
+				label = "image-1-nonsecure";
+				reg = <0x00008000 0x60000>;
+			};
+		};
+
+		storage_partition: partition@f8000 {
+			compatible = "zephyr,mapped-partition";
+			label = "storage";
+			reg = <0x000f8000 0x8000>;
+		};
+	};
+};