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From c6319fb59e0cd5b6d3d4e3401abd9c2057059a74 Mon Sep 17 00:00:00 2001
From: Jakub Luzny <jakub@luzny.cz>
Date: Tue, 11 Aug 2020 10:40:18 +0200
Subject: [PATCH] dt/dtoverlays: Add jailhouse-memory DT overlay
It is meant to reserve memory that can be used by the Jailhouse partitioning
hypervisor. More regions can be reserved.
Upstream-Status: Inappropriate [Jailhouse specific]
Signed-off-by: Jakub Luzny <jakub@luzny.cz>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 7 +++++
.../boot/dts/overlays/jailhouse-memory-overlay.dts | 30 ++++++++++++++++++++++
3 files changed, 38 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/jailhouse-memory-overlay.dts
diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
index fa6db6eed3e2..38c61c67606d 100644
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -92,6 +92,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
iqaudio-dacplus.dtbo \
iqaudio-digi-wm8804-audio.dtbo \
irs1125.dtbo \
+ jailhouse-memory.dtbo \
jedec-spi-nor.dtbo \
justboom-both.dtbo \
justboom-dac.dtbo \
diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index 69892d01faae..4a62f204b4f9 100644
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1528,6 +1528,13 @@ Load: dtoverlay=irs1125
Params: <None>
+Name: jailhouse-memory
+Info: Reserves memory for use by the Jailhouse hypervisor
+Load: dtoverlay=jailhouse-memory,<param>=<val>
+Params: start Start of the reserved memory area (default 0x20000000)
+ size Size of the reserved memory area (default 0x10000000)
+
+
Name: jedec-spi-nor
Info: Adds support for JEDEC-compliant SPI NOR flash devices. (Note: The
"jedec,spi-nor" kernel driver was formerly known as "m25p80".)
diff --git a/arch/arm/boot/dts/overlays/jailhouse-memory-overlay.dts b/arch/arm/boot/dts/overlays/jailhouse-memory-overlay.dts
new file mode 100644
index 000000000000..26c3ce6b9e3d
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/jailhouse-memory-overlay.dts
@@ -0,0 +1,30 @@
+// Reserves memory for use by the Jailhouse hypervisor
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ ranges;
+
+ jailhouse_memory: jailhouse@20000000 {
+ reg = <0x0 0x20000000 0x10000000>;
+ no-map;
+ };
+ };
+ };
+ };
+
+ __overrides__ {
+ start = <&jailhouse_memory>,"reg#0";
+ size = <&jailhouse_memory>,"reg:8";
+ };
+};
--
2.11.0
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