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-rw-r--r--include/asm-powerpc/sparsemem.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-powerpc/sparsemem.h b/include/asm-powerpc/sparsemem.h
new file mode 100644
index 00000000000..ba1b34fdb96
--- /dev/null
+++ b/include/asm-powerpc/sparsemem.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_POWERPC_SPARSEMEM_H
+#define _ASM_POWERPC_SPARSEMEM_H 1
+
+#ifdef CONFIG_SPARSEMEM
+/*
+ * SECTION_SIZE_BITS 2^N: how big each section will be
+ * MAX_PHYSADDR_BITS 2^N: how much physical address space we have
+ * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
+ */
+#define SECTION_SIZE_BITS 24
+#define MAX_PHYSADDR_BITS 44
+#define MAX_PHYSMEM_BITS 44
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+extern void create_section_mapping(unsigned long start, unsigned long end);
+#endif /* CONFIG_MEMORY_HOTPLUG */
+
+#endif /* CONFIG_SPARSEMEM */
+
+#endif /* _ASM_POWERPC_SPARSEMEM_H */