mt798x: reserve memory for pstore

mt7981_360t7_build.sh

@@ -19,6 +19,7 @@ echo "build u-boot..."
 cp -f $UBOOT_DIR/configs/$UBOOT_CFG $UBOOT_DIR/.config
 if [ "$1" = "fixedparts" ]; then
 	echo "CONFIG_MEDIATEK_UBI_FIXED_MTDPARTS=y" >> $UBOOT_DIR/.config
+	echo "Build uboot with fixed-mtdparts!"
 fi
 
 make -C $UBOOT_DIR olddefconfig all

uboot-mtk-20220606/arch/arm/dts/mt7981.dtsi

@@ -30,6 +30,23 @@
 		};
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		ramoops@42ff0000 {
+			compatible = "ramoops";
+			reg = <0x42ff0000 0x10000>;
+			record-size = <0x1000>;
+		};
+
+		secmon_reserved: secmon@43000000 {
+			reg = <0x43000000 0x30000>;
+			no-map;
+		};
+	};
+
 	gpt_clk: gpt_dummy20m {
 		compatible = "fixed-clock";
 		clock-frequency = <13000000>;

uboot-mtk-20220606/arch/arm/dts/mt7986.dtsi

@@ -46,6 +46,23 @@
 		};
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		ramoops@42ff0000 {
+			compatible = "ramoops";
+			reg = <0x42ff0000 0x10000>;
+			record-size = <0x1000>;
+		};
+
+		secmon_reserved: secmon@43000000 {
+			reg = <0x43000000 0x30000>;
+			no-map;
+		};
+	};
+
 	dummy_clk: dummy12m {
 		compatible = "fixed-clock";
 		clock-frequency = <12000000>;