1 files changed, 89 insertions, 0 deletions

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
new file mode 100644
index 000000000000..a59faf2b5edd
--- /dev/null
+++ b/include/linux/memblock.h
@@ -0,0 +1,89 @@
+#ifndef _LINUX_MEMBLOCK_H
+#define _LINUX_MEMBLOCK_H
+#ifdef __KERNEL__
+
+/*
+ * Logical memory blocks.
+ *
+ * Copyright (C) 2001 Peter Bergner, IBM Corp.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/mm.h>
+
+#define MAX_MEMBLOCK_REGIONS 128
+
+struct memblock_property {
+        u64 base;
+        u64 size;
+};
+
+struct memblock_region {
+        unsigned long cnt;
+        u64 size;
+        struct memblock_property region[MAX_MEMBLOCK_REGIONS+1];
+};
+
+struct memblock {
+        unsigned long debug;
+        u64 rmo_size;
+        struct memblock_region memory;
+        struct memblock_region reserved;
+};
+
+extern struct memblock memblock;
+
+extern void __init memblock_init(void);
+extern void __init memblock_analyze(void);
+extern long memblock_add(u64 base, u64 size);
+extern long memblock_remove(u64 base, u64 size);
+extern long __init memblock_free(u64 base, u64 size);
+extern long __init memblock_reserve(u64 base, u64 size);
+extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
+                                u64 (*nid_range)(u64, u64, int *));
+extern u64 __init memblock_alloc(u64 size, u64 align);
+extern u64 __init memblock_alloc_base(u64 size,
+                u64, u64 max_addr);
+extern u64 __init __memblock_alloc_base(u64 size,
+                u64 align, u64 max_addr);
+extern u64 __init memblock_phys_mem_size(void);
+extern u64 memblock_end_of_DRAM(void);
+extern void __init memblock_enforce_memory_limit(u64 memory_limit);
+extern int __init memblock_is_reserved(u64 addr);
+extern int memblock_is_region_reserved(u64 base, u64 size);
+extern int memblock_find(struct memblock_property *res);
+
+extern void memblock_dump_all(void);
+
+static inline u64
+memblock_size_bytes(struct memblock_region *type, unsigned long region_nr)
+{
+        return type->region[region_nr].size;
+}
+static inline u64
+memblock_size_pages(struct memblock_region *type, unsigned long region_nr)
+{
+        return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
+}
+static inline u64
+memblock_start_pfn(struct memblock_region *type, unsigned long region_nr)
+{
+        return type->region[region_nr].base >> PAGE_SHIFT;
+}
+static inline u64
+memblock_end_pfn(struct memblock_region *type, unsigned long region_nr)
+{
+        return memblock_start_pfn(type, region_nr) +
+               memblock_size_pages(type, region_nr);
+}
+
+#include <asm/memblock.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_MEMBLOCK_H */