1 files changed, 56 insertions, 0 deletions
diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
new file mode 100644
index 000000000..50f0dc174
--- /dev/null
+++ b/arch/sh/mm/numa.c
@@ -0,0 +1,56 @@
+/*
+ * arch/sh/mm/numa.c - Multiple node support for SH machines
+ *
+ *  Copyright (C) 2007  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/module.h>
+#include <linux/memblock.h>
+#include <linux/mm.h>
+#include <linux/numa.h>
+#include <linux/pfn.h>
+#include <asm/sections.h>
+
+struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
+EXPORT_SYMBOL_GPL(node_data);
+
+/*
+ * On SH machines the conventional approach is to stash system RAM
+ * in node 0, and other memory blocks in to node 1 and up, ordered by
+ * latency. Each node's pgdat is node-local at the beginning of the node,
+ * immediately followed by the node mem map.
+ */
+void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
+{
+	unsigned long start_pfn, end_pfn;
+
+	/* Don't allow bogus node assignment */
+	BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
+
+	start_pfn = PFN_DOWN(start);
+	end_pfn = PFN_DOWN(end);
+
+	pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
+			 PAGE_KERNEL);
+
+	memblock_add(start, end - start);
+
+	__add_active_range(nid, start_pfn, end_pfn);
+
+	/* Node-local pgdat */
+	NODE_DATA(nid) = memblock_alloc_node(sizeof(struct pglist_data),
+					     SMP_CACHE_BYTES, nid);
+	if (!NODE_DATA(nid))
+		panic("%s: Failed to allocate %zu bytes align=0x%x nid=%d\n",
+		      __func__, sizeof(struct pglist_data), SMP_CACHE_BYTES,
+		      nid);
+
+	NODE_DATA(nid)->node_start_pfn = start_pfn;
+	NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
+
+	/* It's up */
+	node_set_online(nid);
+}