x86: Clean up arch/x86/include/asm/e820.h

There are lots of unused codes defined in e820.h, clean it up.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index d155ce9..21bc633 100644 (file)
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -1,43 +1,7 @@
 #ifndef _ASM_X86_E820_H
 #define _ASM_X86_E820_H
-#define E820MAP        0x2d0           /* our map */
-#define E820MAX        128             /* number of entries in E820MAP */
 
-/*
- * Legacy E820 BIOS limits us to 128 (E820MAX) nodes due to the
- * constrained space in the zeropage.  If we have more nodes than
- * that, and if we've booted off EFI firmware, then the EFI tables
- * passed us from the EFI firmware can list more nodes.  Size our
- * internal memory map tables to have room for these additional
- * nodes, based on up to three entries per node for which the
- * kernel was built: MAX_NUMNODES == (1 << CONFIG_NODES_SHIFT),
- * plus E820MAX, allowing space for the possible duplicate E820
- * entries that might need room in the same arrays, prior to the
- * call to sanitize_e820_map() to remove duplicates.  The allowance
- * of three memory map entries per node is "enough" entries for
- * the initial hardware platform motivating this mechanism to make
- * use of additional EFI map entries.  Future platforms may want
- * to allow more than three entries per node or otherwise refine
- * this size.
- */
-
-/*
- * Odd: 'make headers_check' complains about numa.h if I try
- * to collapse the next two #ifdef lines to a single line:
- *     #if defined(__KERNEL__) && defined(CONFIG_EFI)
- */
-#ifdef __KERNEL__
-#ifdef CONFIG_EFI
-#include <linux/numa.h>
-#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
-#else  /* ! CONFIG_EFI */
-#define E820_X_MAX E820MAX
-#endif
-#else  /* ! __KERNEL__ */
-#define E820_X_MAX E820MAX
-#endif
-
-#define E820NR 0x1e8           /* # entries in E820MAP */
+#define E820MAX                128     /* number of entries in E820MAP */
 
 #define E820_RAM       1
 #define E820_RESERVED  2
@@ -45,111 +9,18 @@
 #define E820_NVS       4
 #define E820_UNUSABLE  5
 
-/* reserved RAM used by kernel itself */
-#define E820_RESERVED_KERN        128
-
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
+
 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[E820_X_MAX];
-};
-
 #define ISA_START_ADDRESS      0xa0000
 #define ISA_END_ADDRESS                0x100000
 
-#define BIOS_BEGIN             0x000a0000
-#define BIOS_END               0x00100000
-
-#ifdef __KERNEL__
-/* see comment in arch/x86/kernel/e820.c */
-extern struct e820map e820;
-extern struct e820map e820_saved;
-
-extern unsigned long pci_mem_start;
-extern int e820_any_mapped(u64 start, u64 end, unsigned type);
-extern int e820_all_mapped(u64 start, u64 end, unsigned type);
-extern void e820_add_region(u64 start, u64 size, int type);
-extern void e820_print_map(char *who);
-extern int
-sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
-extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
-                              unsigned new_type);
-extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
-                            int checktype);
-extern void update_e820(void);
-extern void e820_setup_gap(void);
-extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
-                       unsigned long start_addr, unsigned long long end_addr);
-struct setup_data;
-extern void parse_e820_ext(struct setup_data *data, unsigned long pa_data);
-
-#if defined(CONFIG_X86_64) || \
-       (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
-extern void e820_mark_nosave_regions(unsigned long limit_pfn);
-#else
-static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
-{
-}
-#endif
-
-#ifdef CONFIG_MEMTEST
-extern void early_memtest(unsigned long start, unsigned long end);
-#else
-static inline void early_memtest(unsigned long start, unsigned long end)
-{
-}
-#endif
-
-extern unsigned long end_user_pfn;
-
-extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align);
-extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align);
-extern void reserve_early(u64 start, u64 end, char *name);
-extern void reserve_early_overlap_ok(u64 start, u64 end, char *name);
-extern void free_early(u64 start, u64 end);
-extern void early_res_to_bootmem(u64 start, u64 end);
-extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align);
-
-extern unsigned long e820_end_of_ram_pfn(void);
-extern unsigned long e820_end_of_low_ram_pfn(void);
-extern int e820_find_active_region(const struct e820entry *ei,
-                                 unsigned long start_pfn,
-                                 unsigned long last_pfn,
-                                 unsigned long *ei_startpfn,
-                                 unsigned long *ei_endpfn);
-extern void e820_register_active_regions(int nid, unsigned long start_pfn,
-                                        unsigned long end_pfn);
-extern u64 e820_hole_size(u64 start, u64 end);
-extern void finish_e820_parsing(void);
-extern void e820_reserve_resources(void);
-extern void e820_reserve_resources_late(void);
-extern void setup_memory_map(void);
-extern char *default_machine_specific_memory_setup(void);
-
-/*
- * Returns true iff the specified range [s,e) is completely contained inside
- * the ISA region.
- */
-/*
-static inline bool is_ISA_range(u64 s, u64 e)
-{
-       return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
-}
-*/
-#endif /* __KERNEL__ */
 #endif /* __ASSEMBLY__ */
 
-#ifdef __KERNEL__
-/* #include <linux/ioport.h> */
-
-#define HIGH_MEMORY    (1024*1024)
-#endif /* __KERNEL__ */
-
 #endif /* _ASM_X86_E820_H */