From: Heinrich Schuchardt <xypron.glpk@gmx.de>
To: Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@bootlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Heinrich Schuchardt <xypron.glpk@gmx.de>
Subject: [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area
Date: Fri, 21 Dec 2018 17:45:03 +0100 [thread overview]
Message-ID: <20181221164503.5128-1-xypron.glpk@gmx.de> (raw)
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.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v2
Move the change from armada-8040-mcbin.dts to armada-ap806.dtsi.
I only have a MACCHIATObin for testing but
https://github.com/MarvellEmbeddedProcessors/linux-marvell
has the reservation in that file.
---
arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
index 7d94c1fa592a..f8dafef83db0 100644
--- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
@@ -28,6 +28,17 @@
method = "smc";
};
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ psci-area@4000000 {
+ reg = <0x0 0x4000000 0x0 0x200000>;
+ no-map;
+ };
+ };
+
ap806 {
#address-cells = <2>;
#size-cells = <2>;
--
2.19.2
next reply other threads:[~2018-12-21 16:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 16:45 Heinrich Schuchardt [this message]
2018-12-26 16:16 ` [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area Gregory CLEMENT
2018-12-26 17:09 ` Heinrich Schuchardt
2019-01-10 6:34 ` Emmanuel Vadot
2019-01-10 11:01 ` Gregory CLEMENT
2019-01-10 11:04 ` Gregory CLEMENT
2019-01-20 14:14 ` Heinrich Schuchardt
2019-01-21 10:41 ` Greg Kroah-Hartman
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