commit aec83a6451c78f64de5656c2f4075b7453020425
author Adrian Herrera <adrian.herrera@arm.com> Thu Aug 22 14:20:36 2019 +0100
committer Giacomo Travaglini <giacomo.travaglini@arm.com> Fri Sep 06 08:32:04 2019 +0000
tree f2538777366cfc1191ca45a950d583fcd60d6524
parent 69097ceac805ad5b7fc65404e80574c22b95e36e

dev-arm: Gicv3 ITS device tree autogen

This patch adds device tree automatic generation for Gicv3 ITS.

Change-Id: Ic01500ffa691b331f527c5c2c785ff715660b0c2
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20609
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/dev/arm/Gic.py

diff --git a/src/dev/arm/Gic.py b/src/dev/arm/Gic.py
index e1a8a78..eec6e95 100644
--- a/src/dev/arm/Gic.py
+++ b/src/dev/arm/Gic.py
@@ -187,6 +187,15 @@
     # ID_bits [12:8] = 0b11111: ITS supports 31 EventID bits
     gits_typer = Param.UInt64(0x30023F01, "GITS_TYPER RO value")
 
+    def generateDeviceTree(self, state):
+        node = self.generateBasicPioDeviceNode(state, "gic-its", self.pio_addr,
+                                               self.pio_size)
+        node.appendCompatible(["arm,gic-v3-its"])
+        node.append(FdtProperty("msi-controller"))
+        node.append(FdtPropertyWords("#msi-cells", [1]))
+
+        return node
+
 class Gicv3(BaseGic):
     type = 'Gicv3'
     cxx_header = "dev/arm/gic_v3.hh"
@@ -254,4 +263,7 @@
 
         node.appendPhandle(self)
 
+        # Generate the ITS device tree
+        node.append(self.its.generateDeviceTree(self._state))
+
         yield node