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authorHeinrich Schuchardt <xypron.glpk@gmx.de>2018-12-21 17:45:03 +0100
committerGregory CLEMENT <gregory.clement@bootlin.com>2019-01-10 12:16:33 +0100
commit132ac39cffbcfed80ada38ef0fc6d34d95da7be6 (patch)
treeb2b3a2872e3f3d534781cbb3f4fdcca39378ec6d
parentbfeffd155283772bbe78c6a05dec7c0128ee500c (diff)
downloadlinux-0-day-132ac39cffbcfed80ada38ef0fc6d34d95da7be6.tar.gz
arm64: dts: marvell: armada-ap806: reserve PSCI area
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>
-rw-r--r--arch/arm64/boot/dts/marvell/armada-ap806.dtsi17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
index 7d94c1f..7f799cb 100644
--- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
@@ -28,6 +28,23 @@
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>;