[PATCH 4/4] amd/seattle: Initial revision of AMD Seattle support

[<suravee.suthikulpanit@amd.com>]

From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>

This patch add inital (minimal) platform support for AMD Seattle,
which mainly just define the matching ID, and specify system_off,
and sytem_reset mechanism.

Initially, the firmware only support a subset of PSCI-0.2 functions,
system-off and sytem-reset. The boot protocol is still using spin-table.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
---
 xen/arch/arm/platforms/Makefile  |  1 +
 xen/arch/arm/platforms/seattle.c | 50 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 xen/arch/arm/platforms/seattle.c

diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile
index 680364f..03e7a14 100644
--- a/xen/arch/arm/platforms/Makefile
+++ b/xen/arch/arm/platforms/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_ARM_32) += midway.o
 obj-$(CONFIG_ARM_32) += omap5.o
 obj-$(CONFIG_ARM_32) += sunxi.o
 obj-$(CONFIG_ARM_64) += xgene-storm.o
+obj-$(CONFIG_ARM_64) += seattle.o
diff --git a/xen/arch/arm/platforms/seattle.c b/xen/arch/arm/platforms/seattle.c
new file mode 100644
index 0000000..e9a5ecf
--- /dev/null
+++ b/xen/arch/arm/platforms/seattle.c
@@ -0,0 +1,50 @@
+/*
+ * xen/arch/arm/seattle.c
+ *
+ * AMD Seattle specific settings
+ *
+ * Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
+ * Copyright (c) 2014 Advance Micro Devices Inc.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+#include <asm/platform.h>
+#include <xen/mm.h>
+#include <xen/vmap.h>
+#include <asm/io.h>
+#include <asm/gic.h>
+#include <asm/psci.h>
+
+static const char * const seattle_dt_compat[] __initconst =
+{
+    "amd,seattle",
+    NULL
+};
+
+/* Seattle firmware only implement PSCI handler for
+ * system off and system reset. This is temporary
+ * until full PSCI-0.2 is supported.
+ */
+PLATFORM_START(seattle, "SEATTLE")
+    .compatible = seattle_dt_compat,
+    .reset      = call_psci_system_reset,
+    .poweroff   = call_psci_system_off,
+PLATFORM_END
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
1.9.3