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

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[ 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>
This commit is contained in:
Heinrich Schuchardt 2018-12-21 17:45:03 +01:00 committed by Greg Kroah-Hartman
parent fc038565f1
commit bff576f356
1 changed files with 17 additions and 0 deletions
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17
arch/arm64/boot/dts/marvell/armada-ap806.dtsi
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@ -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>;