FVP: Allow building for DynamIQ systems
FVPs that model DynamIQ configuration implements all CPUs in a single
cluster. I.e., such models have a single cluster with more than 4 CPUs.
This differs from existing default build configuration for FVP where up
to 4 CPUs are assumed per cluster.
To allow building for DynamIQ configuration, promote the macro
FVP_MAX_CPUS_PER_CLUSTER as a build option to have it set from the build
command line. The value of the build option defaults to 4.
Change-Id: Idc3853bc95f680869b434b011c2dbd733e40c6ce
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index c9e8748..9e23711 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -755,6 +755,9 @@
- ``FVP_CCN`` : The CCN driver is selected. This is the default
if ``FVP_CLUSTER_COUNT`` > 2.
+- ``FVP_MAX_CPUS_PER_CLUSTER``: Sets the maximum number of CPUs implemented in
+ a single cluster. This option defaults to 4.
+
- ``FVP_MAX_PE_PER_CPU``: Sets the maximum number of PEs implemented on any CPU
in the system. This option defaults to 1. Note that the build option
``ARM_PLAT_MT`` doesn't have any effect on FVP platforms.
diff --git a/plat/arm/board/fvp/fvp_def.h b/plat/arm/board/fvp/fvp_def.h
index a430bca..5ac5d3c 100644
--- a/plat/arm/board/fvp/fvp_def.h
+++ b/plat/arm/board/fvp/fvp_def.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -10,7 +10,10 @@
#ifndef FVP_CLUSTER_COUNT
#define FVP_CLUSTER_COUNT 2
#endif
+
+#ifndef FVP_MAX_CPUS_PER_CLUSTER
#define FVP_MAX_CPUS_PER_CLUSTER 4
+#endif
#ifndef FVP_MAX_PE_PER_CPU
# define FVP_MAX_PE_PER_CPU 1
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 8b913fb..3dca4c2 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -13,6 +13,9 @@
# Default cluster count for FVP
FVP_CLUSTER_COUNT := 2
+# Default number of CPUs per cluster on FVP
+FVP_MAX_CPUS_PER_CLUSTER := 4
+
# Default number of threads per CPU on FVP
FVP_MAX_PE_PER_CPU := 1
@@ -27,6 +30,9 @@
# Pass FVP_CLUSTER_COUNT to the build system.
$(eval $(call add_define,FVP_CLUSTER_COUNT))
+# Pass FVP_MAX_CPUS_PER_CLUSTER to the build system.
+$(eval $(call add_define,FVP_MAX_CPUS_PER_CLUSTER))
+
# Pass FVP_MAX_PE_PER_CPU to the build system.
$(eval $(call add_define,FVP_MAX_PE_PER_CPU))