[Xen-devel] [PATCH v2 1/3] xen/arm: Add ThunderX platform support

[vijay.kilari@xxxxxxxxx]

From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>

Add basic support for Cavium ThunderX platform

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
---
 xen/arch/arm/platforms/Makefile   |    1 +
 xen/arch/arm/platforms/thunderx.c |   66 +++++++++++++++++++++++++++++++++++++
 xen/arch/arm/setup.c              |    1 +
 3 files changed, 68 insertions(+)

diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile
index e173fec..d9f98f9 100644
--- a/xen/arch/arm/platforms/Makefile
+++ b/xen/arch/arm/platforms/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_ARM_32) += sunxi.o
 obj-$(CONFIG_ARM_32) += rcar2.o
 obj-$(CONFIG_ARM_64) += seattle.o
 obj-$(CONFIG_ARM_64) += xgene-storm.o
+obj-$(CONFIG_ARM_64) += thunderx.o
diff --git a/xen/arch/arm/platforms/thunderx.c 
b/xen/arch/arm/platforms/thunderx.c
new file mode 100644
index 0000000..96560e1
--- /dev/null
+++ b/xen/arch/arm/platforms/thunderx.c
@@ -0,0 +1,66 @@
+/*
+ * xen/arch/arm/platforms/thunderx.c
+ *
+ * Cavium Thunder specific settings
+ *
+ * Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
+ * Copyright (c) 2015 Cavium 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>
+
+static int thunderx_specific_mapping(struct domain *d)
+{
+    uint64_t addr, size;
+    int res;
+
+    /* Mappings GSER region required for dom0 */
+    addr = 0x87e090000000;
+    size = 0xd000000;
+
+    res = map_mmio_regions(d,
+                           paddr_to_pfn(addr & PAGE_MASK),
+                           DIV_ROUND_UP(size, PAGE_SIZE),
+                           paddr_to_pfn(addr & PAGE_MASK));
+    if ( res )
+    {
+         printk(XENLOG_ERR "Unable to map to dom%d region"
+                " 0x%"PRIx64" - 0x%"PRIx64"\n",
+                d->domain_id,
+                addr & PAGE_MASK, PAGE_ALIGN(addr + size) - 1);
+    }
+
+    return 0;
+}
+
+static const char * const thunderx_dt_compat[] __initconst =
+{
+    "cavium,thunder-88xx",
+    NULL
+};
+
+PLATFORM_START(thunderx, "THUNDERX")
+    .compatible = thunderx_dt_compat,
+    .specific_mapping = thunderx_specific_mapping,
+    .dom0_gnttab_start = 0x40000000000,
+    .dom0_gnttab_size = 0x20000,
+PLATFORM_END
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index a916ca6..43b626b 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -66,6 +66,7 @@ static void __init init_idle_domain(void)
 static const char * __initdata processor_implementers[] = {
     ['A'] = "ARM Limited",
     ['B'] = "Broadcom Corporation",
+    ['C'] = "Cavium Inc.",
     ['D'] = "Digital Equipment Corp",
     ['M'] = "Motorola, Freescale Semiconductor Inc.",
     ['P'] = "Applied Micro",
-- 
1.7.9.5


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