aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDaniel Thompson <daniel.thompson@linaro.org>2017-03-03 20:55:16 +0100
committerDaniel Thompson <daniel.thompson@linaro.org>2017-03-30 16:30:08 +0100
commitd5bb17596f739e22ea446894e6ff60947d86a5f3 (patch)
tree6fa3f44f2bd73b3157022769a71af68fec78e1b2
parentc02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff)
downloadlinux-d5bb17596f739e22ea446894e6ff60947d86a5f3.tar.gz
arm64: dts: foundation-v8: Enable PSCI mode
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>
-rw-r--r--arch/arm64/boot/dts/arm/Makefile3
-rw-r--r--arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dts51
-rw-r--r--arch/arm64/boot/dts/arm/foundation-v8.dtsi8
3 files changed, 57 insertions, 5 deletions
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@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@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 7cfa8e414e7f..78bdaf55b71a 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@0 {
+ cpu0: cpu@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@1 {
+ cpu1: cpu@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@2 {
+ cpu2: cpu@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@3 {
+ cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,armv8";
reg = <0x0 0x3>;