From e1912a821a992f04c258e844d717733de03daeb7 Mon Sep 17 00:00:00 2001
From: Peter Robinson <pbrobinson@gmail.com>
Date: Wed, 15 Aug 2018 14:06:45 +0100
Subject: [PATCH] arm64: dts: marvell: a3700: reserve ATF memory
On Marvell Armada 3700, the ARM Trusted Firmware is loaded in RAM at address
0x04000000, and can use up to 16MiB (0x01000000).
As the ATF is responsible for handling PSCI calls (including, but not limited
to, system reset management), its memory area should never be overwritten
during runtime.
Declaring a range of reserved memory solves this problem.
Signed-off-by: Arnaud Ferraris <arnaud.ferraris.external@xxxxxxxxxx>
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index 3353252d78a0a..2110e7dbc9818 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -34,6 +34,17 @@
};
};
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ arm-trusted-firmware@4000000 {
+ no-map;
+ reg = <0x0 0x04000000 0x0 0x01000000>;
+ };
+ };
+
psci {
compatible = "arm,psci-0.2";
method = "smc";
--
2.17.1