dev-arm: Add VExpress_GEM5_Foundation platform

A new VExpress_GEM5_Foundation platform has been added in order to match
the FVP Armv8-A Foundation Platform described in:

Armv8-A Foundation Platform - User Guide - Version 11.8

The VExpress_GEM5_V1/V2 are already loosely based on the Foundation
platform, however there are some differences in the PCI regions (V1/V2)
and the GICv3 regions (V2).
We hence introduce the VExpress_GEM5_Foundation to match closely the
FVP Foundation Platform

Change-Id: I1604c64ce566308d888c3a630019494b9fae7acf
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/27388
Tested-by: Gem5 Cloud Project GCB service account <345032938727@cloudbuild.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>

diff --git a/src/dev/arm/RealView.py b/src/dev/arm/RealView.py
index 0a26a9414ca9092b83556f1d66ed8e40161ca3bc..a22ac4a9a4bb6cd5757300d537e9ee9e8b9d3e5e 100644 (file)
--- a/src/dev/arm/RealView.py
+++ b/src/dev/arm/RealView.py
@@ -1209,3 +1209,37 @@ class VExpress_GEM5_V2(VExpress_GEM5_V2_Base):
                 self.hdlcd,
             ]
 
+class VExpress_GEM5_Foundation(VExpress_GEM5_Base):
+    """
+    Based on Armv8-A FVP Foundation platform v11.8
+    Reference for memory and interrupt map:
+        Armv8-A Foundation Platform - User Guide - Version 11.8
+        Document ID: 100961_1180_00_en
+    """
+    _off_chip_ranges = [
+        # CS1-CS5
+        AddrRange(0x0c000000, 0x20000000),
+        # External AXI interface (PCI)
+        AddrRange(0x40000000, 0x80000000),
+    ]
+
+    gic = Gicv3(dist_addr=0x2f000000, redist_addr=0x2f100000,
+                maint_int=ArmPPI(num=25), gicv4=False,
+                its=NULL)
+
+    pci_host = GenericArmPciHost(
+        conf_base=0x40000000, conf_size='256MB', conf_device_bits=12,
+        pci_pio_base=0x50000000,
+        pci_mem_base=0x400000000,
+        int_policy="ARM_PCI_INT_DEV", int_base=100, int_count=4)
+
+    def _on_chip_devices(self):
+        return super(VExpress_GEM5_Foundation, self)._on_chip_devices() + [
+                self.gic
+            ]
+
+    def setupBootLoader(self, cur_sys, loc, boot_loader=None):
+        if boot_loader is None:
+            boot_loader = [ loc('boot_v2.arm64') ]
+        super(VExpress_GEM5_Foundation, self).setupBootLoader(
+                cur_sys, boot_loader)