From: daniel.thompson@linaro.org (Daniel Thompson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: dts: foundation-v8: Enable PSCI mode
Date: Mon, 18 Sep 2017 16:38:32 +0100 [thread overview]
Message-ID: <20170918153832.16356-1-daniel.thompson@linaro.org> (raw)
Currently if the Foundation model is running ARM Trusted Firmware then
the kernel, which is configured to use spin tables, cannot start secondary
processors or "power off" the simulation.
Add a couple of labels to the include file, and introduce a new .dts
file that uses these to override the enable-method.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
---
arch/arm64/boot/dts/arm/Makefile | 3 +-
.../boot/dts/arm/foundation-v8-gicv3-psci.dts | 51 ++++++++++++++++++++++
arch/arm64/boot/dts/arm/foundation-v8.dtsi | 8 ++--
3 files changed, 57 insertions(+), 5 deletions(-)
create mode 100644 arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dts
diff --git a/arch/arm64/boot/dts/arm/Makefile b/arch/arm64/boot/dts/arm/Makefile
index 75cc2aa10101..c9ec88809f3d 100644
--- a/arch/arm64/boot/dts/arm/Makefile
+++ b/arch/arm64/boot/dts/arm/Makefile
@@ -1,4 +1,5 @@
-dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb foundation-v8-gicv3.dtb
+dtb-$(CONFIG_ARCH_VEXPRESS) += \
+ foundation-v8.dtb foundation-v8-gicv3.dtb foundation-v8-gicv3-psci.dtb
dtb-$(CONFIG_ARCH_VEXPRESS) += juno.dtb juno-r1.dtb juno-r2.dtb
dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb
dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2f-1xv7-ca53x2.dtb
diff --git a/arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dts b/arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dts
new file mode 100644
index 000000000000..94a249095104
--- /dev/null
+++ b/arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dts
@@ -0,0 +1,51 @@
+/*
+ * ARM Ltd.
+ *
+ * ARMv8 Foundation model DTS (GICv3 configuration)
+ */
+
+#include "foundation-v8.dtsi"
+
+/ {
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+
+ gic: interrupt-controller at 2f000000 {
+ compatible = "arm,gic-v3";
+ #interrupt-cells = <3>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+ interrupt-controller;
+ reg = <0x0 0x2f000000 0x0 0x10000>,
+ <0x0 0x2f100000 0x0 0x200000>,
+ <0x0 0x2c000000 0x0 0x2000>,
+ <0x0 0x2c010000 0x0 0x2000>,
+ <0x0 0x2c02f000 0x0 0x2000>;
+ interrupts = <1 9 4>;
+
+ its: its at 2f020000 {
+ compatible = "arm,gic-v3-its";
+ msi-controller;
+ reg = <0x0 0x2f020000 0x0 0x20000>;
+ };
+ };
+};
+
+&cpu0 {
+ enable-method = "psci";
+};
+
+&cpu1 {
+ enable-method = "psci";
+};
+
+&cpu2 {
+ enable-method = "psci";
+};
+
+&cpu3 {
+ enable-method = "psci";
+};
diff --git a/arch/arm64/boot/dts/arm/foundation-v8.dtsi b/arch/arm64/boot/dts/arm/foundation-v8.dtsi
index 8ecdd4331980..8c7f8c4f090a 100644
--- a/arch/arm64/boot/dts/arm/foundation-v8.dtsi
+++ b/arch/arm64/boot/dts/arm/foundation-v8.dtsi
@@ -28,7 +28,7 @@
#address-cells = <2>;
#size-cells = <0>;
- cpu at 0 {
+ cpu0: cpu at 0 {
device_type = "cpu";
compatible = "arm,armv8";
reg = <0x0 0x0>;
@@ -36,7 +36,7 @@
cpu-release-addr = <0x0 0x8000fff8>;
next-level-cache = <&L2_0>;
};
- cpu at 1 {
+ cpu1: cpu at 1 {
device_type = "cpu";
compatible = "arm,armv8";
reg = <0x0 0x1>;
@@ -44,7 +44,7 @@
cpu-release-addr = <0x0 0x8000fff8>;
next-level-cache = <&L2_0>;
};
- cpu at 2 {
+ cpu2: cpu at 2 {
device_type = "cpu";
compatible = "arm,armv8";
reg = <0x0 0x2>;
@@ -52,7 +52,7 @@
cpu-release-addr = <0x0 0x8000fff8>;
next-level-cache = <&L2_0>;
};
- cpu at 3 {
+ cpu3: cpu at 3 {
device_type = "cpu";
compatible = "arm,armv8";
reg = <0x0 0x3>;
--
2.9.5
next reply other threads:[~2017-09-18 15:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 15:38 Daniel Thompson [this message]
2017-09-18 16:12 ` [PATCH] arm64: dts: foundation-v8: Enable PSCI mode Mark Rutland
2017-09-19 15:59 ` Daniel Thompson
2017-09-19 16:20 ` Mark Rutland
2017-09-19 18:32 ` [PATCH v2] " Daniel Thompson
2017-09-20 9:42 ` Sudeep Holla
2017-09-20 11:17 ` Daniel Thompson
2017-10-02 17:26 ` Sudeep Holla
2017-10-03 9:12 ` Daniel Thompson
2017-10-03 10:15 ` Ard Biesheuvel
2017-10-03 14:09 ` Sudeep Holla
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