[Xen-devel] [PATCH v2 2/2] xen/arm: Blacklist SMMU on Thunder-X

[Julien Grall <julien.grall@xxxxxxx>]

Xen does not yet support Cavium SMMU because it requires some
workaround. For the time being, blacklist them.

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>

---
    Changes in v2:
        - Fix compatible string
---
 xen/arch/arm/platforms/Makefile   |  1 +
 xen/arch/arm/platforms/thunderx.c | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 xen/arch/arm/platforms/thunderx.c

diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile
index 53a47e48d2..80e555cc14 100644
--- a/xen/arch/arm/platforms/Makefile
+++ b/xen/arch/arm/platforms/Makefile
@@ -6,5 +6,6 @@ obj-$(CONFIG_ARM_32) += omap5.o
 obj-$(CONFIG_ARM_32) += rcar2.o
 obj-$(CONFIG_ARM_64) += seattle.o
 obj-y += sunxi.o
+obj-$(CONFIG_ARM_64) += thunderx.o
 obj-$(CONFIG_ARM_64) += xgene-storm.o
 obj-$(CONFIG_ARM_64) += xilinx-zynqmp.o
diff --git a/xen/arch/arm/platforms/thunderx.c 
b/xen/arch/arm/platforms/thunderx.c
new file mode 100644
index 0000000000..9b32a29c6b
--- /dev/null
+++ b/xen/arch/arm/platforms/thunderx.c
@@ -0,0 +1,39 @@
+/*
+ * xen/arch/arm/platforms/thunderx.c
+ *
+ * Cavium Thunder-X specific settings
+ *
+ * Copyright (c) 2018 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; under version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <asm/platform.h>
+
+static const char * const thunderx_dt_compat[] __initconst =
+{
+    "cavium,thunder-88xx",
+    NULL
+};
+
+static const struct dt_device_match thunderx_blacklist_dev[] __initconst =
+{
+    /* Cavium has its own SMMU which is not yet supported. */
+    DT_MATCH_COMPATIBLE("cavium,smmu-v2"),
+    { /* sentinel */ },
+};
+
+PLATFORM_START(thunderx, "THUNDERX")
+    .compatible = thunderx_dt_compat,
+    .blacklist_dev = thunderx_blacklist_dev,
+PLATFORM_END
-- 
2.11.0


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