Commit bff576f3 authored Dec 21, 2018 by Heinrich Schuchardt Committed by Greg Kroah-Hartman May 16, 2019

arm64: dts: marvell: armada-ap806: reserve PSCI area



[ Upstream commit 132ac39cffbcfed80ada38ef0fc6d34d95da7be6 ]

The memory area [0x4000000-0x4200000[ is occupied by the PSCI firmware. Any
attempt to access it from Linux leads to an immediate crash.

So let's make the same memory reservation as the vendor kernel.

[gregory: added as comment that this region matches the mainline U-boot]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>

parent fc038565

arch/arm64/boot/dts/marvell/armada-ap806.dtsi

+17 −0

Original line number	Diff line number	Diff line
		@@ -65,6 +65,23 @@
		method = "smc";
		};

		reserved-memory {
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

		/*
		* This area matches the mapping done with a
		* mainline U-Boot, and should be updated by the
		* bootloader.
		*/

		psci-area@4000000 {
		reg = <0x0 0x4000000 0x0 0x200000>;
		no-map;
		};
		};

		ap806 {
		#address-cells = <2>;
		#size-cells = <2>;