Juno: Implement initial platform port
This patch adds the initial port of the ARM Trusted Firmware on the Juno
development platform. This port does not support a BL3-2 image or any PSCI APIs
apart from PSCI_VERSION and PSCI_CPU_ON. It enables workarounds for selected
Cortex-A57 (#806969 & #813420) errata and implements the workaround for a Juno
platform errata (Defect id 831273).
Change-Id: Ib3d92df3af53820cfbb2977582ed0d7abf6ef893
diff --git a/plat/juno/plat_topology.c b/plat/juno/plat_topology.c
new file mode 100644
index 0000000..39d4dab
--- /dev/null
+++ b/plat/juno/plat_topology.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <platform_def.h>
+#include <psci.h>
+
+unsigned int plat_get_aff_count(unsigned int aff_lvl, unsigned long mpidr)
+{
+ /* Report 1 (absent) instance at levels higher that the cluster level */
+ if (aff_lvl > MPIDR_AFFLVL1)
+ return 1;
+
+ if (aff_lvl == MPIDR_AFFLVL1)
+ return 2; /* We have two clusters */
+
+ return mpidr & 0x100 ? 4 : 2; /* 4 cpus in cluster 1, 2 in cluster 0 */
+}
+
+unsigned int plat_get_aff_state(unsigned int aff_lvl, unsigned long mpidr)
+{
+ return aff_lvl <= MPIDR_AFFLVL1 ? PSCI_AFF_PRESENT : PSCI_AFF_ABSENT;
+}
+
+int plat_get_max_afflvl()
+{
+ return MPIDR_AFFLVL1;
+}
+
+int plat_setup_topology()
+{
+ /* Juno todo: Make topology configurable via SCC */
+ return 0;
+}