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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 11:20:03 +0200
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 11:20:03 +0200
commit96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch)
treed947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86/e820_32.h
parent27bd0c955648646abf2a353a8371d28c37bcd982 (diff)
i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/e820_32.h')
-rw-r--r--include/asm-x86/e820_32.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h
new file mode 100644
index 00000000000..cf67dbb1db7
--- /dev/null
+++ b/include/asm-x86/e820_32.h
@@ -0,0 +1,60 @@
+/*
+ * structures and definitions for the int 15, ax=e820 memory map
+ * scheme.
+ *
+ * In a nutshell, arch/i386/boot/setup.S populates a scratch table
+ * in the empty_zero_block that contains a list of usable address/size
+ * duples. In arch/i386/kernel/setup.c, this information is
+ * transferred into the e820map, and in arch/i386/mm/init.c, that
+ * new information is used to mark pages reserved or not.
+ *
+ */
+#ifndef __E820_HEADER
+#define __E820_HEADER
+
+#define E820MAP 0x2d0 /* our map */
+#define E820MAX 128 /* number of entries in E820MAP */
+#define E820NR 0x1e8 /* # entries in E820MAP */
+
+#define E820_RAM 1
+#define E820_RESERVED 2
+#define E820_ACPI 3
+#define E820_NVS 4
+
+#define HIGH_MEMORY (1024*1024)
+
+#ifndef __ASSEMBLY__
+
+struct e820entry {
+ u64 addr; /* start of memory segment */
+ u64 size; /* size of memory segment */
+ u32 type; /* type of memory segment */
+} __attribute__((packed));
+
+struct e820map {
+ u32 nr_map;
+ struct e820entry map[E820MAX];
+};
+
+extern struct e820map e820;
+
+extern int e820_all_mapped(unsigned long start, unsigned long end,
+ unsigned type);
+extern int e820_any_mapped(u64 start, u64 end, unsigned type);
+extern void find_max_pfn(void);
+extern void register_bootmem_low_pages(unsigned long max_low_pfn);
+extern void e820_register_memory(void);
+extern void limit_regions(unsigned long long size);
+extern void print_memory_map(char *who);
+
+#if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
+extern void e820_mark_nosave_regions(void);
+#else
+static inline void e820_mark_nosave_regions(void)
+{
+}
+#endif
+
+#endif/*!__ASSEMBLY__*/
+
+#endif/*__E820_HEADER*/