arm64: dts: qcom: msm8994-octagon: Fix up the memory map

Windows-based devices have a far different memory map than
the standard LA one.
Signed-off-by: Gustave Monce <gustave.monce@outlook.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210131013853.55810-7-konrad.dybcio@somainline.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi

@@ -10,6 +10,19 @@
 #include "pm8994.dtsi"
 #include "pmi8994.dtsi"
 
+/*
+ * Delete all generic (msm8994.dtsi) reserved
+ * memory mappings which are different in this device.
+ */
+/delete-node/ &adsp_mem;
+/delete-node/ &audio_mem;
+/delete-node/ &cont_splash_mem;
+/delete-node/ &mba_mem;
+/delete-node/ &mpss_mem;
+/delete-node/ &peripheral_region;
+/delete-node/ &rmtfs_mem;
+/delete-node/ &smem_mem;
+
 / {
 	/*
 	 * Most Lumia 950/XL users use GRUB to load their kernels,
@@ -28,6 +41,159 @@ chosen {
 		#size-cells = <2>;
 		ranges;
 	};
+
+	reserved-memory {
+		/*
+		 * This device being a WP platform has a very different
+		 * memory layout than other Android based devices.
+		 * This memory layout is directly copied from the original
+		 * device UEFI firmware, and adapted based on observations
+		 * using JTAG for the Qualcomm Peripheral Image regions.
+		 */
+
+		uefi_mem: memory@200000 {
+			reg = <0 0x200000 0 0x100000>;
+			no-map;
+		};
+
+		mppark_mem: memory@300000 {
+			reg = <0 0x300000 0 0x80000>;
+			no-map;
+		};
+
+		fbpt_mem: memory@380000 {
+			reg = <0 0x380000 0 0x1000>;
+			no-map;
+		};
+
+		dbg2_mem: memory@381000 {
+			reg = <0 0x381000 0 0x4000>;
+			no-map;
+		};
+
+		capsule_mem: memory@385000 {
+			reg = <0 0x385000 0 0x1000>;
+			no-map;
+		};
+
+		tpmctrl_mem: memory@386000 {
+			reg = <0 0x386000 0 0x3000>;
+			no-map;
+		};
+
+		uefiinfo_mem: memory@389000 {
+			reg = <0 0x389000 0 0x1000>;
+			no-map;
+		};
+
+		reset_mem: memory@389000 {
+			reg = <0 0x389000 0 0x1000>;
+			no-map;
+		};
+
+		resuncached_mem: memory@38e000 {
+			reg = <0 0x38e000 0 0x72000>;
+			no-map;
+		};
+
+		disp_mem: memory@400000 {
+			reg = <0 0x400000 0 0x800000>;
+			no-map;
+		};
+
+		uefistack_mem: memory@c00000 {
+			reg = <0 0xc00000 0 0x40000>;
+			no-map;
+		};
+
+		cpuvect_mem: memory@c40000 {
+			reg = <0 0xc40000 0 0x10000>;
+			no-map;
+		};
+
+		rescached_mem: memory@400000 {
+			reg = <0 0xc50000 0 0xb0000>;
+			no-map;
+		};
+
+		tzapps_mem: memory@6500000 {
+			reg = <0 0x6500000 0 0x500000>;
+			no-map;
+		};
+
+		smem_mem: memory@6a00000 {
+			reg = <0 0x6a00000 0 0x200000>;
+			no-map;
+		};
+
+		hyp_mem: memory@6c00000 {
+			reg = <0 0x6c00000 0 0x100000>;
+			no-map;
+		};
+
+		tz_mem: memory@6d00000 {
+			reg = <0 0x6d00000 0 0x160000>;
+			no-map;
+		};
+
+		rfsa_adsp_mem: memory@6e60000 {
+			reg = <0 0x6e60000 0 0x10000>;
+			no-map;
+		};
+
+		rfsa_mpss_mem: memory@6e70000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0 0x6e70000 0 0x10000>;
+			no-map;
+
+			qcom,client-id = <1>;
+		};
+
+		/*
+		 * Value obtained from the device original ACPI DSDT table
+		 * MPSS_EFS / SBL
+		 */
+		mba_mem: memory@6e80000 {
+			reg = <0 0x6e80000 0 0x180000>;
+			no-map;
+		};
+
+		/*
+		 * Peripheral Image loader region begin!
+		 * The region reserved for pil is 0x7000000-0xef00000
+		 */
+
+		mpss_mem: memory@7000000 {
+			reg = <0 0x7000000 0 0x5a00000>;
+			no-map;
+		};
+
+		adsp_mem: memory@ca00000 {
+			reg = <0 0xca00000 0 0x1800000>;
+			no-map;
+		};
+
+		venus_mem: memory@e200000 {
+			reg = <0 0xe200000 0 0x500000>;
+			no-map;
+		};
+
+		pil_metadata_mem: memory@e700000 {
+			reg = <0 0xe700000 0 0x4000>;
+			no-map;
+		};
+
+		memory@e704000 {
+			reg = <0 0xe704000 0 0x7fc000>;
+			no-map;
+		};
+		/* Peripheral Image loader region end */
+
+		cnss_mem: memory@ef00000 {
+			reg = <0 0xef00000 0 0x300000>;
+			no-map;
+		};
+	};
 };
 
 &blsp1_i2c1 {