boards: define flash partitions for nucleo_h743zi

Defines partitions that can be used by mcuboot on nucleo_h743zi board.
Please note that mcuboot is not yet supported on stm32 h7 family as the
write-block-size is greater than 8.

Signed-off-by: Nicolas VINCENT <[email protected]>

Author: nvincent-vossloh

boards/arm/nucleo_h743zi/nucleo_h743zi.dts

@@ -19,6 +19,7 @@
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash0;
 		zephyr,dtcm = &dtcm;
+		zephyr,code-partition = &slot0_partition;
 	};
 
 	leds {
@@ -116,3 +117,43 @@
 	status = "okay";
 	pinctrl-0 = <&spi1_sck_pa5 &spi1_miso_pa6 &spi1_mosi_pb5>;
 };
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* 128KB for bootloader */
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x00020000>;
+			read-only;
+		};
+
+		/* storage: 128KB for settings */
+		storage_partition: partition@20000 {
+			label = "storage";
+			reg = <0x00020000 0x00020000>;
+		};
+
+		/* application image slot: 256KB */
+		slot0_partition: partition@40000 {
+			label = "image-0";
+			reg = <0x00040000 0x00040000>;
+		};
+
+		/* backup slot: 256KB */
+		slot1_partition: partition@80000 {
+			label = "image-1";
+			reg = <0x00080000 0x00040000>;
+		};
+
+		/* swap slot: 128KB */
+		scratch_partition: partition@c0000 {
+			label = "image-scratch";
+			reg = <0x000c0000 0x00020000>;
+		};
+
+	};
+};