x86: make e820.c to have common functions
authorYinghai Lu <yhlu.kernel@gmail.com>
Sun, 11 May 2008 07:30:15 +0000 (00:30 -0700)
committerThomas Gleixner <tglx@linutronix.de>
Sun, 25 May 2008 08:55:10 +0000 (10:55 +0200)
remove the duplicated copy of these functions.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/Makefile
arch/x86/kernel/e820.c [new file with mode: 0644]
arch/x86/kernel/e820_32.c
arch/x86/kernel/e820_64.c
arch/x86/kernel/setup_32.c
include/asm-x86/e820.h
include/asm-x86/e820_32.h
include/asm-x86/e820_64.h

index 5e618c3b47208ed2f301c685a5596135b30cc78f..5369a4e36f17427fab247ad236dc9cba0f8abbef 100644 (file)
@@ -22,7 +22,7 @@ obj-y                 += setup_$(BITS).o i8259_$(BITS).o setup.o
 obj-$(CONFIG_X86_32)   += sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)   += sys_x86_64.o x8664_ksyms_64.o
 obj-$(CONFIG_X86_64)   += syscall_64.o vsyscall_64.o setup64.o
-obj-y                  += bootflag.o e820_$(BITS).o
+obj-y                  += bootflag.o e820_$(BITS).o e820.o
 obj-y                  += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
 obj-y                  += alternative.o i8253.o pci-nommu.o
 obj-$(CONFIG_X86_64)   += bugs_64.o
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
new file mode 100644 (file)
index 0000000..2cb686f
--- /dev/null
@@ -0,0 +1,475 @@
+/*
+ * Handle the memory map.
+ * The functions here do the job until bootmem takes over.
+ *
+ *  Getting sanitize_e820_map() in sync with i386 version by applying change:
+ *  -  Provisions for empty E820 memory regions (reported by certain BIOSes).
+ *     Alex Achenbach <xela@slit.de>, December 2002.
+ *  Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/kexec.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/pfn.h>
+
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/e820.h>
+#include <asm/setup.h>
+
+struct e820map e820;
+
+/* For PCI or other memory-mapped resources */
+unsigned long pci_mem_start = 0xaeedbabe;
+#ifdef CONFIG_PCI
+EXPORT_SYMBOL(pci_mem_start);
+#endif
+
+/*
+ * This function checks if any part of the range <start,end> is mapped
+ * with type.
+ */
+int
+e820_any_mapped(u64 start, u64 end, unsigned type)
+{
+       int i;
+
+       for (i = 0; i < e820.nr_map; i++) {
+               struct e820entry *ei = &e820.map[i];
+
+               if (type && ei->type != type)
+                       continue;
+               if (ei->addr >= end || ei->addr + ei->size <= start)
+                       continue;
+               return 1;
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(e820_any_mapped);
+
+/*
+ * This function checks if the entire range <start,end> is mapped with type.
+ *
+ * Note: this function only works correct if the e820 table is sorted and
+ * not-overlapping, which is the case
+ */
+int __init e820_all_mapped(u64 start, u64 end, unsigned type)
+{
+       int i;
+
+       for (i = 0; i < e820.nr_map; i++) {
+               struct e820entry *ei = &e820.map[i];
+
+               if (type && ei->type != type)
+                       continue;
+               /* is the region (part) in overlap with the current region ?*/
+               if (ei->addr >= end || ei->addr + ei->size <= start)
+                       continue;
+
+               /* if the region is at the beginning of <start,end> we move
+                * start to the end of the region since it's ok until there
+                */
+               if (ei->addr <= start)
+                       start = ei->addr + ei->size;
+               /*
+                * if start is now at or beyond end, we're done, full
+                * coverage
+                */
+               if (start >= end)
+                       return 1;
+       }
+       return 0;
+}
+
+/*
+ * Add a memory region to the kernel e820 map.
+ */
+void __init add_memory_region(u64 start, u64 size, int type)
+{
+       int x = e820.nr_map;
+
+       if (x == E820MAX) {
+               printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
+               return;
+       }
+
+       e820.map[x].addr = start;
+       e820.map[x].size = size;
+       e820.map[x].type = type;
+       e820.nr_map++;
+}
+
+void __init e820_print_map(char *who)
+{
+       int i;
+
+       for (i = 0; i < e820.nr_map; i++) {
+               printk(KERN_INFO " %s: %016Lx - %016Lx ", who,
+                      (unsigned long long) e820.map[i].addr,
+                      (unsigned long long)
+                      (e820.map[i].addr + e820.map[i].size));
+               switch (e820.map[i].type) {
+               case E820_RAM:
+                       printk(KERN_CONT "(usable)\n");
+                       break;
+               case E820_RESERVED:
+                       printk(KERN_CONT "(reserved)\n");
+                       break;
+               case E820_ACPI:
+                       printk(KERN_CONT "(ACPI data)\n");
+                       break;
+               case E820_NVS:
+                       printk(KERN_CONT "(ACPI NVS)\n");
+                       break;
+               default:
+                       printk(KERN_CONT "type %u\n", e820.map[i].type);
+                       break;
+               }
+       }
+}
+
+/*
+ * Sanitize the BIOS e820 map.
+ *
+ * Some e820 responses include overlapping entries. The following
+ * replaces the original e820 map with a new one, removing overlaps.
+ *
+ */
+int __init sanitize_e820_map(struct e820entry *biosmap, char *pnr_map)
+{
+       struct change_member {
+               struct e820entry *pbios; /* pointer to original bios entry */
+               unsigned long long addr; /* address for this change point */
+       };
+       static struct change_member change_point_list[2*E820MAX] __initdata;
+       static struct change_member *change_point[2*E820MAX] __initdata;
+       static struct e820entry *overlap_list[E820MAX] __initdata;
+       static struct e820entry new_bios[E820MAX] __initdata;
+       struct change_member *change_tmp;
+       unsigned long current_type, last_type;
+       unsigned long long last_addr;
+       int chgidx, still_changing;
+       int overlap_entries;
+       int new_bios_entry;
+       int old_nr, new_nr, chg_nr;
+       int i;
+
+       /*
+               Visually we're performing the following
+               (1,2,3,4 = memory types)...
+
+               Sample memory map (w/overlaps):
+                  ____22__________________
+                  ______________________4_
+                  ____1111________________
+                  _44_____________________
+                  11111111________________
+                  ____________________33__
+                  ___________44___________
+                  __________33333_________
+                  ______________22________
+                  ___________________2222_
+                  _________111111111______
+                  _____________________11_
+                  _________________4______
+
+               Sanitized equivalent (no overlap):
+                  1_______________________
+                  _44_____________________
+                  ___1____________________
+                  ____22__________________
+                  ______11________________
+                  _________1______________
+                  __________3_____________
+                  ___________44___________
+                  _____________33_________
+                  _______________2________
+                  ________________1_______
+                  _________________4______
+                  ___________________2____
+                  ____________________33__
+                  ______________________4_
+       */
+
+       /* if there's only one memory region, don't bother */
+       if (*pnr_map < 2)
+               return -1;
+
+       old_nr = *pnr_map;
+
+       /* bail out if we find any unreasonable addresses in bios map */
+       for (i = 0; i < old_nr; i++)
+               if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr)
+                       return -1;
+
+       /* create pointers for initial change-point information (for sorting) */
+       for (i = 0; i < 2 * old_nr; i++)
+               change_point[i] = &change_point_list[i];
+
+       /* record all known change-points (starting and ending addresses),
+          omitting those that are for empty memory regions */
+       chgidx = 0;
+       for (i = 0; i < old_nr; i++)    {
+               if (biosmap[i].size != 0) {
+                       change_point[chgidx]->addr = biosmap[i].addr;
+                       change_point[chgidx++]->pbios = &biosmap[i];
+                       change_point[chgidx]->addr = biosmap[i].addr +
+                               biosmap[i].size;
+                       change_point[chgidx++]->pbios = &biosmap[i];
+               }
+       }
+       chg_nr = chgidx;
+
+       /* sort change-point list by memory addresses (low -> high) */
+       still_changing = 1;
+       while (still_changing)  {
+               still_changing = 0;
+               for (i = 1; i < chg_nr; i++)  {
+                       unsigned long long curaddr, lastaddr;
+                       unsigned long long curpbaddr, lastpbaddr;
+
+                       curaddr = change_point[i]->addr;
+                       lastaddr = change_point[i - 1]->addr;
+                       curpbaddr = change_point[i]->pbios->addr;
+                       lastpbaddr = change_point[i - 1]->pbios->addr;
+
+                       /*
+                        * swap entries, when:
+                        *
+                        * curaddr > lastaddr or
+                        * curaddr == lastaddr and curaddr == curpbaddr and
+                        * lastaddr != lastpbaddr
+                        */
+                       if (curaddr < lastaddr ||
+                           (curaddr == lastaddr && curaddr == curpbaddr &&
+                            lastaddr != lastpbaddr)) {
+                               change_tmp = change_point[i];
+                               change_point[i] = change_point[i-1];
+                               change_point[i-1] = change_tmp;
+                               still_changing = 1;
+                       }
+               }
+       }
+
+       /* create a new bios memory map, removing overlaps */
+       overlap_entries = 0;     /* number of entries in the overlap table */
+       new_bios_entry = 0;      /* index for creating new bios map entries */
+       last_type = 0;           /* start with undefined memory type */
+       last_addr = 0;           /* start with 0 as last starting address */
+
+       /* loop through change-points, determining affect on the new bios map */
+       for (chgidx = 0; chgidx < chg_nr; chgidx++) {
+               /* keep track of all overlapping bios entries */
+               if (change_point[chgidx]->addr ==
+                   change_point[chgidx]->pbios->addr) {
+                       /*
+                        * add map entry to overlap list (> 1 entry
+                        * implies an overlap)
+                        */
+                       overlap_list[overlap_entries++] =
+                               change_point[chgidx]->pbios;
+               } else {
+                       /*
+                        * remove entry from list (order independent,
+                        * so swap with last)
+                        */
+                       for (i = 0; i < overlap_entries; i++) {
+                               if (overlap_list[i] ==
+                                   change_point[chgidx]->pbios)
+                                       overlap_list[i] =
+                                               overlap_list[overlap_entries-1];
+                       }
+                       overlap_entries--;
+               }
+               /*
+                * if there are overlapping entries, decide which
+                * "type" to use (larger value takes precedence --
+                * 1=usable, 2,3,4,4+=unusable)
+                */
+               current_type = 0;
+               for (i = 0; i < overlap_entries; i++)
+                       if (overlap_list[i]->type > current_type)
+                               current_type = overlap_list[i]->type;
+               /*
+                * continue building up new bios map based on this
+                * information
+                */
+               if (current_type != last_type)  {
+                       if (last_type != 0)      {
+                               new_bios[new_bios_entry].size =
+                                       change_point[chgidx]->addr - last_addr;
+                               /*
+                                * move forward only if the new size
+                                * was non-zero
+                                */
+                               if (new_bios[new_bios_entry].size != 0)
+                                       /*
+                                        * no more space left for new
+                                        * bios entries ?
+                                        */
+                                       if (++new_bios_entry >= E820MAX)
+                                               break;
+                       }
+                       if (current_type != 0)  {
+                               new_bios[new_bios_entry].addr =
+                                       change_point[chgidx]->addr;
+                               new_bios[new_bios_entry].type = current_type;
+                               last_addr = change_point[chgidx]->addr;
+                       }
+                       last_type = current_type;
+               }
+       }
+       /* retain count for new bios entries */
+       new_nr = new_bios_entry;
+
+       /* copy new bios mapping into original location */
+       memcpy(biosmap, new_bios, new_nr * sizeof(struct e820entry));
+       *pnr_map = new_nr;
+
+       return 0;
+}
+
+/*
+ * Copy the BIOS e820 map into a safe place.
+ *
+ * Sanity-check it while we're at it..
+ *
+ * If we're lucky and live on a modern system, the setup code
+ * will have given us a memory map that we can use to properly
+ * set up memory.  If we aren't, we'll fake a memory map.
+ */
+int __init copy_e820_map(struct e820entry *biosmap, int nr_map)
+{
+       /* Only one memory region (or negative)? Ignore it */
+       if (nr_map < 2)
+               return -1;
+
+       do {
+               u64 start = biosmap->addr;
+               u64 size = biosmap->size;
+               u64 end = start + size;
+               u32 type = biosmap->type;
+
+               /* Overflow in 64 bits? Ignore the memory map. */
+               if (start > end)
+                       return -1;
+
+               add_memory_region(start, size, type);
+       } while (biosmap++, --nr_map);
+       return 0;
+}
+
+u64 __init update_memory_range(u64 start, u64 size, unsigned old_type,
+                               unsigned new_type)
+{
+       int i;
+       u64 real_updated_size = 0;
+
+       BUG_ON(old_type == new_type);
+
+       for (i = 0; i < e820.nr_map; i++) {
+               struct e820entry *ei = &e820.map[i];
+               u64 final_start, final_end;
+               if (ei->type != old_type)
+                       continue;
+               /* totally covered? */
+               if (ei->addr >= start &&
+                   (ei->addr + ei->size) <= (start + size)) {
+                       ei->type = new_type;
+                       real_updated_size += ei->size;
+                       continue;
+               }
+               /* partially covered */
+               final_start = max(start, ei->addr);
+               final_end = min(start + size, ei->addr + ei->size);
+               if (final_start >= final_end)
+                       continue;
+               add_memory_region(final_start, final_end - final_start,
+                                        new_type);
+               real_updated_size += final_end - final_start;
+       }
+       return real_updated_size;
+}
+
+void __init update_e820(void)
+{
+       u8 nr_map;
+
+       nr_map = e820.nr_map;
+       if (sanitize_e820_map(e820.map, &nr_map))
+               return;
+       e820.nr_map = nr_map;
+       printk(KERN_INFO "modified physical RAM map:\n");
+       e820_print_map("modified");
+}
+
+/*
+ * Search for the biggest gap in the low 32 bits of the e820
+ * memory space.  We pass this space to PCI to assign MMIO resources
+ * for hotplug or unconfigured devices in.
+ * Hopefully the BIOS let enough space left.
+ */
+__init void e820_setup_gap(void)
+{
+       unsigned long gapstart, gapsize, round;
+       unsigned long long last;
+       int i;
+       int found = 0;
+
+       last = 0x100000000ull;
+       gapstart = 0x10000000;
+       gapsize = 0x400000;
+       i = e820.nr_map;
+       while (--i >= 0) {
+               unsigned long long start = e820.map[i].addr;
+               unsigned long long end = start + e820.map[i].size;
+
+               /*
+                * Since "last" is at most 4GB, we know we'll
+                * fit in 32 bits if this condition is true
+                */
+               if (last > end) {
+                       unsigned long gap = last - end;
+
+                       if (gap > gapsize) {
+                               gapsize = gap;
+                               gapstart = end;
+                               found = 1;
+                       }
+               }
+               if (start < last)
+                       last = start;
+       }
+
+#ifdef CONFIG_X86_64
+       if (!found) {
+               gapstart = (end_pfn << PAGE_SHIFT) + 1024*1024;
+               printk(KERN_ERR "PCI: Warning: Cannot find a gap in the 32bit "
+                      "address range\n"
+                      KERN_ERR "PCI: Unassigned devices with 32bit resource "
+                      "registers may break!\n");
+       }
+#endif
+
+       /*
+        * See how much we want to round up: start off with
+        * rounding to the next 1MB area.
+        */
+       round = 0x100000;
+       while ((gapsize >> 4) > round)
+               round += round;
+       /* Fun with two's complement */
+       pci_mem_start = (gapstart + round) & -round;
+
+       printk(KERN_INFO
+              "Allocating PCI resources starting at %lx (gap: %lx:%lx)\n",
+              pci_mem_start, gapstart, gapsize);
+}
+
index 751d517d802cc57794ec54799844c59a61b595d6..dfe25751038b5b2640c554ab3717f8a3cdda4b61 100644 (file)
 #include <asm/e820.h>
 #include <asm/setup.h>
 
-struct e820map e820;
-struct change_member {
-       struct e820entry *pbios; /* pointer to original bios entry */
-       unsigned long long addr; /* address for this change point */
-};
-static struct change_member change_point_list[2*E820MAX] __initdata;
-static struct change_member *change_point[2*E820MAX] __initdata;
-static struct e820entry *overlap_list[E820MAX] __initdata;
-static struct e820entry new_bios[E820MAX] __initdata;
-/* For PCI or other memory-mapped resources */
-unsigned long pci_mem_start = 0x10000000;
-#ifdef CONFIG_PCI
-EXPORT_SYMBOL(pci_mem_start);
-#endif
-
 static struct resource system_rom_resource = {
        .name   = "System ROM",
        .start  = 0xf0000,
@@ -254,223 +239,6 @@ void __init e820_mark_nosave_regions(void)
 }
 #endif
 
-void __init add_memory_region(unsigned long long start,
-                             unsigned long long size, int type)
-{
-       int x;
-
-       x = e820.nr_map;
-
-       if (x == E820MAX) {
-               printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
-               return;
-       }
-
-       e820.map[x].addr = start;
-       e820.map[x].size = size;
-       e820.map[x].type = type;
-       e820.nr_map++;
-} /* add_memory_region */
-
-/*
- * Sanitize the BIOS e820 map.
- *
- * Some e820 responses include overlapping entries.  The following
- * replaces the original e820 map with a new one, removing overlaps.
- *
- */
-int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
-{
-       struct change_member *change_tmp;
-       unsigned long current_type, last_type;
-       unsigned long long last_addr;
-       int chgidx, still_changing;
-       int overlap_entries;
-       int new_bios_entry;
-       int old_nr, new_nr, chg_nr;
-       int i;
-
-       /*
-               Visually we're performing the following (1,2,3,4 = memory types)...
-
-               Sample memory map (w/overlaps):
-                  ____22__________________
-                  ______________________4_
-                  ____1111________________
-                  _44_____________________
-                  11111111________________
-                  ____________________33__
-                  ___________44___________
-                  __________33333_________
-                  ______________22________
-                  ___________________2222_
-                  _________111111111______
-                  _____________________11_
-                  _________________4______
-
-               Sanitized equivalent (no overlap):
-                  1_______________________
-                  _44_____________________
-                  ___1____________________
-                  ____22__________________
-                  ______11________________
-                  _________1______________
-                  __________3_____________
-                  ___________44___________
-                  _____________33_________
-                  _______________2________
-                  ________________1_______
-                  _________________4______
-                  ___________________2____
-                  ____________________33__
-                  ______________________4_
-       */
-       /* if there's only one memory region, don't bother */
-       if (*pnr_map < 2) {
-               return -1;
-       }
-
-       old_nr = *pnr_map;
-
-       /* bail out if we find any unreasonable addresses in bios map */
-       for (i=0; i<old_nr; i++)
-               if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr) {
-                       return -1;
-               }
-
-       /* create pointers for initial change-point information (for sorting) */
-       for (i=0; i < 2*old_nr; i++)
-               change_point[i] = &change_point_list[i];
-
-       /* record all known change-points (starting and ending addresses),
-          omitting those that are for empty memory regions */
-       chgidx = 0;
-       for (i=0; i < old_nr; i++)      {
-               if (biosmap[i].size != 0) {
-                       change_point[chgidx]->addr = biosmap[i].addr;
-                       change_point[chgidx++]->pbios = &biosmap[i];
-                       change_point[chgidx]->addr = biosmap[i].addr + biosmap[i].size;
-                       change_point[chgidx++]->pbios = &biosmap[i];
-               }
-       }
-       chg_nr = chgidx;        /* true number of change-points */
-
-       /* sort change-point list by memory addresses (low -> high) */
-       still_changing = 1;
-       while (still_changing)  {
-               still_changing = 0;
-               for (i=1; i < chg_nr; i++)  {
-                       /* if <current_addr> > <last_addr>, swap */
-                       /* or, if current=<start_addr> & last=<end_addr>, swap */
-                       if ((change_point[i]->addr < change_point[i-1]->addr) ||
-                               ((change_point[i]->addr == change_point[i-1]->addr) &&
-                                (change_point[i]->addr == change_point[i]->pbios->addr) &&
-                                (change_point[i-1]->addr != change_point[i-1]->pbios->addr))
-                          )
-                       {
-                               change_tmp = change_point[i];
-                               change_point[i] = change_point[i-1];
-                               change_point[i-1] = change_tmp;
-                               still_changing=1;
-                       }
-               }
-       }
-
-       /* create a new bios memory map, removing overlaps */
-       overlap_entries=0;       /* number of entries in the overlap table */
-       new_bios_entry=0;        /* index for creating new bios map entries */
-       last_type = 0;           /* start with undefined memory type */
-       last_addr = 0;           /* start with 0 as last starting address */
-       /* loop through change-points, determining affect on the new bios map */
-       for (chgidx=0; chgidx < chg_nr; chgidx++)
-       {
-               /* keep track of all overlapping bios entries */
-               if (change_point[chgidx]->addr == change_point[chgidx]->pbios->addr)
-               {
-                       /* add map entry to overlap list (> 1 entry implies an overlap) */
-                       overlap_list[overlap_entries++]=change_point[chgidx]->pbios;
-               }
-               else
-               {
-                       /* remove entry from list (order independent, so swap with last) */
-                       for (i=0; i<overlap_entries; i++)
-                       {
-                               if (overlap_list[i] == change_point[chgidx]->pbios)
-                                       overlap_list[i] = overlap_list[overlap_entries-1];
-                       }
-                       overlap_entries--;
-               }
-               /* if there are overlapping entries, decide which "type" to use */
-               /* (larger value takes precedence -- 1=usable, 2,3,4,4+=unusable) */
-               current_type = 0;
-               for (i=0; i<overlap_entries; i++)
-                       if (overlap_list[i]->type > current_type)
-                               current_type = overlap_list[i]->type;
-               /* continue building up new bios map based on this information */
-               if (current_type != last_type)  {
-                       if (last_type != 0)      {
-                               new_bios[new_bios_entry].size =
-                                       change_point[chgidx]->addr - last_addr;
-                               /* move forward only if the new size was non-zero */
-                               if (new_bios[new_bios_entry].size != 0)
-                                       if (++new_bios_entry >= E820MAX)
-                                               break;  /* no more space left for new bios entries */
-                       }
-                       if (current_type != 0)  {
-                               new_bios[new_bios_entry].addr = change_point[chgidx]->addr;
-                               new_bios[new_bios_entry].type = current_type;
-                               last_addr=change_point[chgidx]->addr;
-                       }
-                       last_type = current_type;
-               }
-       }
-       new_nr = new_bios_entry;   /* retain count for new bios entries */
-
-       /* copy new bios mapping into original location */
-       memcpy(biosmap, new_bios, new_nr*sizeof(struct e820entry));
-       *pnr_map = new_nr;
-
-       return 0;
-}
-
-/*
- * Copy the BIOS e820 map into a safe place.
- *
- * Sanity-check it while we're at it..
- *
- * If we're lucky and live on a modern system, the setup code
- * will have given us a memory map that we can use to properly
- * set up memory.  If we aren't, we'll fake a memory map.
- *
- * We check to see that the memory map contains at least 2 elements
- * before we'll use it, because the detection code in setup.S may
- * not be perfect and most every PC known to man has two memory
- * regions: one from 0 to 640k, and one from 1mb up.  (The IBM
- * thinkpad 560x, for example, does not cooperate with the memory
- * detection code.)
- */
-int __init copy_e820_map(struct e820entry *biosmap, int nr_map)
-{
-       /* Only one memory region (or negative)? Ignore it */
-       if (nr_map < 2)
-               return -1;
-
-       do {
-               u64 start = biosmap->addr;
-               u64 size = biosmap->size;
-               u64 end = start + size;
-               u32 type = biosmap->type;
-
-               /* Overflow in 64 bits? Ignore the memory map. */
-               if (start > end)
-                       return -1;
-
-               add_memory_region(start, size, type);
-       } while (biosmap++, --nr_map);
-
-       return 0;
-}
-
 /*
  * Find the highest page frame number we have available
  */
@@ -535,86 +303,12 @@ void __init register_bootmem_low_pages(unsigned long max_low_pfn)
        }
 }
 
-void __init e820_register_memory(void)
-{
-       unsigned long gapstart, gapsize, round;
-       unsigned long long last;
-       int i;
-
-       /*
-        * Search for the biggest gap in the low 32 bits of the e820
-        * memory space.
-        */
-       last = 0x100000000ull;
-       gapstart = 0x10000000;
-       gapsize = 0x400000;
-       i = e820.nr_map;
-       while (--i >= 0) {
-               unsigned long long start = e820.map[i].addr;
-               unsigned long long end = start + e820.map[i].size;
-
-               /*
-                * Since "last" is at most 4GB, we know we'll
-                * fit in 32 bits if this condition is true
-                */
-               if (last > end) {
-                       unsigned long gap = last - end;
-
-                       if (gap > gapsize) {
-                               gapsize = gap;
-                               gapstart = end;
-                       }
-               }
-               if (start < last)
-                       last = start;
-       }
-
-       /*
-        * See how much we want to round up: start off with
-        * rounding to the next 1MB area.
-        */
-       round = 0x100000;
-       while ((gapsize >> 4) > round)
-               round += round;
-       /* Fun with two's complement */
-       pci_mem_start = (gapstart + round) & -round;
-
-       printk("Allocating PCI resources starting at %08lx (gap: %08lx:%08lx)\n",
-               pci_mem_start, gapstart, gapsize);
-}
-
-static void __init print_memory_map(char *who)
-{
-       int i;
-
-       for (i = 0; i < e820.nr_map; i++) {
-               printk(" %s: %016Lx - %016Lx ", who,
-                       e820.map[i].addr,
-                       e820.map[i].addr + e820.map[i].size);
-               switch (e820.map[i].type) {
-               case E820_RAM:  printk("(usable)\n");
-                               break;
-               case E820_RESERVED:
-                               printk("(reserved)\n");
-                               break;
-               case E820_ACPI:
-                               printk("(ACPI data)\n");
-                               break;
-               case E820_NVS:
-                               printk("(ACPI NVS)\n");
-                               break;
-               default:        printk("type %u\n", e820.map[i].type);
-                               break;
-               }
-       }
-}
-
 void __init limit_regions(unsigned long long size)
 {
        unsigned long long current_addr;
        int i;
 
-       print_memory_map("limit_regions start");
+       e820_print_map("limit_regions start");
        for (i = 0; i < e820.nr_map; i++) {
                current_addr = e820.map[i].addr + e820.map[i].size;
                if (current_addr < size)
@@ -633,62 +327,10 @@ void __init limit_regions(unsigned long long size)
                        e820.nr_map = i + 1;
                        e820.map[i].size -= current_addr - size;
                }
-               print_memory_map("limit_regions endfor");
+               e820_print_map("limit_regions endfor");
                return;
        }
-       print_memory_map("limit_regions endfunc");
-}
-
-/*
- * This function checks if any part of the range <start,end> is mapped
- * with type.
- */
-int
-e820_any_mapped(u64 start, u64 end, unsigned type)
-{
-       int i;
-       for (i = 0; i < e820.nr_map; i++) {
-               const struct e820entry *ei = &e820.map[i];
-               if (type && ei->type != type)
-                       continue;
-               if (ei->addr >= end || ei->addr + ei->size <= start)
-                       continue;
-               return 1;
-       }
-       return 0;
-}
-EXPORT_SYMBOL_GPL(e820_any_mapped);
-
- /*
-  * This function checks if the entire range <start,end> is mapped with type.
-  *
-  * Note: this function only works correct if the e820 table is sorted and
-  * not-overlapping, which is the case
-  */
-int __init
-e820_all_mapped(unsigned long s, unsigned long e, unsigned type)
-{
-       u64 start = s;
-       u64 end = e;
-       int i;
-       for (i = 0; i < e820.nr_map; i++) {
-               struct e820entry *ei = &e820.map[i];
-               if (type && ei->type != type)
-                       continue;
-               /* is the region (part) in overlap with the current region ?*/
-               if (ei->addr >= end || ei->addr + ei->size <= start)
-                       continue;
-               /* if the region is at the beginning of <start,end> we move
-                * start to the end of the region since it's ok until there
-                */
-               if (ei->addr <= start)
-                       start = ei->addr + ei->size;
-               /* if start is now at or beyond end, we're done, full
-                * coverage */
-               if (start >= end)
-                       return 1; /* we're done */
-       }
-       return 0;
+       e820_print_map("limit_regions endfunc");
 }
 
 /* Overridden in paravirt.c if CONFIG_PARAVIRT */
@@ -700,7 +342,7 @@ char * __init __attribute__((weak)) memory_setup(void)
 void __init setup_memory_map(void)
 {
        printk(KERN_INFO "BIOS-provided physical RAM map:\n");
-       print_memory_map(memory_setup());
+       e820_print_map(memory_setup());
 }
 
 static int __initdata user_defined_memmap;
@@ -783,55 +425,12 @@ static int __init parse_memmap(char *arg)
        return 0;
 }
 early_param("memmap", parse_memmap);
-u64 __init update_memory_range(u64 start, u64 size, unsigned old_type,
-                               unsigned new_type)
-{
-       int i;
-       u64 real_updated_size = 0;
-
-       BUG_ON(old_type == new_type);
-
-       for (i = 0; i < e820.nr_map; i++) {
-               struct e820entry *ei = &e820.map[i];
-               u64 final_start, final_end;
-               if (ei->type != old_type)
-                       continue;
-               /* totally covered? */
-               if (ei->addr >= start &&
-                   (ei->addr + ei->size) <= (start + size)) {
-                       ei->type = new_type;
-                       real_updated_size += ei->size;
-                       continue;
-               }
-               /* partially covered */
-               final_start = max(start, ei->addr);
-               final_end = min(start + size, ei->addr + ei->size);
-               if (final_start >= final_end)
-                       continue;
-               add_memory_region(final_start, final_end - final_start,
-                                        new_type);
-               real_updated_size += final_end - final_start;
-       }
-
-       return real_updated_size;
-}
 
 void __init finish_e820_parsing(void)
 {
        if (user_defined_memmap) {
                printk(KERN_INFO "user-defined physical RAM map:\n");
-               print_memory_map("user");
+               e820_print_map("user");
        }
 }
 
-void __init update_e820(void)
-{
-       u8 nr_map;
-
-       nr_map = e820.nr_map;
-       if (sanitize_e820_map(e820.map, &nr_map))
-               return;
-       e820.nr_map = nr_map;
-       printk(KERN_INFO "modified physical RAM map:\n");
-       print_memory_map("modified");
-}
index c45b4dea405543126e9f814e4f4174d2beb84d13..28a14eb65d3d1f176f75f05162be82b8168f717d 100644 (file)
@@ -29,8 +29,6 @@
 #include <asm/kdebug.h>
 #include <asm/trampoline.h>
 
-struct e820map e820;
-
 /*
  * PFN of last memory page.
  */
@@ -176,62 +174,6 @@ again:
        }
        return changed;
 }
-/*
- * This function checks if any part of the range <start,end> is mapped
- * with type.
- */
-int
-e820_any_mapped(unsigned long start, unsigned long end, unsigned type)
-{
-       int i;
-
-       for (i = 0; i < e820.nr_map; i++) {
-               struct e820entry *ei = &e820.map[i];
-
-               if (type && ei->type != type)
-                       continue;
-               if (ei->addr >= end || ei->addr + ei->size <= start)
-                       continue;
-               return 1;
-       }
-       return 0;
-}
-EXPORT_SYMBOL_GPL(e820_any_mapped);
-
-/*
- * This function checks if the entire range <start,end> is mapped with type.
- *
- * Note: this function only works correct if the e820 table is sorted and
- * not-overlapping, which is the case
- */
-int __init e820_all_mapped(unsigned long start, unsigned long end,
-                          unsigned type)
-{
-       int i;
-
-       for (i = 0; i < e820.nr_map; i++) {
-               struct e820entry *ei = &e820.map[i];
-
-               if (type && ei->type != type)
-                       continue;
-               /* is the region (part) in overlap with the current region ?*/
-               if (ei->addr >= end || ei->addr + ei->size <= start)
-                       continue;
-
-               /* if the region is at the beginning of <start,end> we move
-                * start to the end of the region since it's ok until there
-                */
-               if (ei->addr <= start)
-                       start = ei->addr + ei->size;
-               /*
-                * if start is now at or beyond end, we're done, full
-                * coverage
-                */
-               if (start >= end)
-                       return 1;
-       }
-       return 0;
-}
 
 /*
  * Find a free area with specified alignment in a specific range.
@@ -434,24 +376,6 @@ e820_register_active_regions(int nid, unsigned long start_pfn,
                        add_active_range(nid, ei_startpfn, ei_endpfn);
 }
 
-/*
- * Add a memory region to the kernel e820 map.
- */
-void __init add_memory_region(unsigned long start, unsigned long size, int type)
-{
-       int x = e820.nr_map;
-
-       if (x == E820MAX) {
-               printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
-               return;
-       }
-
-       e820.map[x].addr = start;
-       e820.map[x].size = size;
-       e820.map[x].type = type;
-       e820.nr_map++;
-}
-
 /*
  * Find the hole size (in bytes) in the memory range.
  * @start: starting address of the memory range to scan
@@ -473,266 +397,6 @@ unsigned long __init e820_hole_size(unsigned long start, unsigned long end)
        return end - start - (ram << PAGE_SHIFT);
 }
 
-static void __init e820_print_map(char *who)
-{
-       int i;
-
-       for (i = 0; i < e820.nr_map; i++) {
-               printk(KERN_INFO " %s: %016Lx - %016Lx ", who,
-                      (unsigned long long) e820.map[i].addr,
-                      (unsigned long long)
-                      (e820.map[i].addr + e820.map[i].size));
-               switch (e820.map[i].type) {
-               case E820_RAM:
-                       printk(KERN_CONT "(usable)\n");
-                       break;
-               case E820_RESERVED:
-                       printk(KERN_CONT "(reserved)\n");
-                       break;
-               case E820_ACPI:
-                       printk(KERN_CONT "(ACPI data)\n");
-                       break;
-               case E820_NVS:
-                       printk(KERN_CONT "(ACPI NVS)\n");
-                       break;
-               default:
-                       printk(KERN_CONT "type %u\n", e820.map[i].type);
-                       break;
-               }
-       }
-}
-
-/*
- * Sanitize the BIOS e820 map.
- *
- * Some e820 responses include overlapping entries. The following
- * replaces the original e820 map with a new one, removing overlaps.
- *
- */
-static int __init sanitize_e820_map(struct e820entry *biosmap, char *pnr_map)
-{
-       struct change_member {
-               struct e820entry *pbios; /* pointer to original bios entry */
-               unsigned long long addr; /* address for this change point */
-       };
-       static struct change_member change_point_list[2*E820MAX] __initdata;
-       static struct change_member *change_point[2*E820MAX] __initdata;
-       static struct e820entry *overlap_list[E820MAX] __initdata;
-       static struct e820entry new_bios[E820MAX] __initdata;
-       struct change_member *change_tmp;
-       unsigned long current_type, last_type;
-       unsigned long long last_addr;
-       int chgidx, still_changing;
-       int overlap_entries;
-       int new_bios_entry;
-       int old_nr, new_nr, chg_nr;
-       int i;
-
-       /*
-               Visually we're performing the following
-               (1,2,3,4 = memory types)...
-
-               Sample memory map (w/overlaps):
-                  ____22__________________
-                  ______________________4_
-                  ____1111________________
-                  _44_____________________
-                  11111111________________
-                  ____________________33__
-                  ___________44___________
-                  __________33333_________
-                  ______________22________
-                  ___________________2222_
-                  _________111111111______
-                  _____________________11_
-                  _________________4______
-
-               Sanitized equivalent (no overlap):
-                  1_______________________
-                  _44_____________________
-                  ___1____________________
-                  ____22__________________
-                  ______11________________
-                  _________1______________
-                  __________3_____________
-                  ___________44___________
-                  _____________33_________
-                  _______________2________
-                  ________________1_______
-                  _________________4______
-                  ___________________2____
-                  ____________________33__
-                  ______________________4_
-       */
-
-       /* if there's only one memory region, don't bother */
-       if (*pnr_map < 2)
-               return -1;
-
-       old_nr = *pnr_map;
-
-       /* bail out if we find any unreasonable addresses in bios map */
-       for (i = 0; i < old_nr; i++)
-               if (biosmap[i].addr + biosmap[i].size < biosmap[i].addr)
-                       return -1;
-
-       /* create pointers for initial change-point information (for sorting) */
-       for (i = 0; i < 2 * old_nr; i++)
-               change_point[i] = &change_point_list[i];
-
-       /* record all known change-points (starting and ending addresses),
-          omitting those that are for empty memory regions */
-       chgidx = 0;
-       for (i = 0; i < old_nr; i++)    {
-               if (biosmap[i].size != 0) {
-                       change_point[chgidx]->addr = biosmap[i].addr;
-                       change_point[chgidx++]->pbios = &biosmap[i];
-                       change_point[chgidx]->addr = biosmap[i].addr +
-                               biosmap[i].size;
-                       change_point[chgidx++]->pbios = &biosmap[i];
-               }
-       }
-       chg_nr = chgidx;
-
-       /* sort change-point list by memory addresses (low -> high) */
-       still_changing = 1;
-       while (still_changing)  {
-               still_changing = 0;
-               for (i = 1; i < chg_nr; i++)  {
-                       unsigned long long curaddr, lastaddr;
-                       unsigned long long curpbaddr, lastpbaddr;
-
-                       curaddr = change_point[i]->addr;
-                       lastaddr = change_point[i - 1]->addr;
-                       curpbaddr = change_point[i]->pbios->addr;
-                       lastpbaddr = change_point[i - 1]->pbios->addr;
-
-                       /*
-                        * swap entries, when:
-                        *
-                        * curaddr > lastaddr or
-                        * curaddr == lastaddr and curaddr == curpbaddr and
-                        * lastaddr != lastpbaddr
-                        */
-                       if (curaddr < lastaddr ||
-                           (curaddr == lastaddr && curaddr == curpbaddr &&
-                            lastaddr != lastpbaddr)) {
-                               change_tmp = change_point[i];
-                               change_point[i] = change_point[i-1];
-                               change_point[i-1] = change_tmp;
-                               still_changing = 1;
-                       }
-               }
-       }
-
-       /* create a new bios memory map, removing overlaps */
-       overlap_entries = 0;     /* number of entries in the overlap table */
-       new_bios_entry = 0;      /* index for creating new bios map entries */
-       last_type = 0;           /* start with undefined memory type */
-       last_addr = 0;           /* start with 0 as last starting address */
-
-       /* loop through change-points, determining affect on the new bios map */
-       for (chgidx = 0; chgidx < chg_nr; chgidx++) {
-               /* keep track of all overlapping bios entries */
-               if (change_point[chgidx]->addr ==
-                   change_point[chgidx]->pbios->addr) {
-                       /*
-                        * add map entry to overlap list (> 1 entry
-                        * implies an overlap)
-                        */
-                       overlap_list[overlap_entries++] =
-                               change_point[chgidx]->pbios;
-               } else {
-                       /*
-                        * remove entry from list (order independent,
-                        * so swap with last)
-                        */
-                       for (i = 0; i < overlap_entries; i++) {
-                               if (overlap_list[i] ==
-                                   change_point[chgidx]->pbios)
-                                       overlap_list[i] =
-                                               overlap_list[overlap_entries-1];
-                       }
-                       overlap_entries--;
-               }
-               /*
-                * if there are overlapping entries, decide which
-                * "type" to use (larger value takes precedence --
-                * 1=usable, 2,3,4,4+=unusable)
-                */
-               current_type = 0;
-               for (i = 0; i < overlap_entries; i++)
-                       if (overlap_list[i]->type > current_type)
-                               current_type = overlap_list[i]->type;
-               /*
-                * continue building up new bios map based on this
-                * information
-                */
-               if (current_type != last_type)  {
-                       if (last_type != 0)      {
-                               new_bios[new_bios_entry].size =
-                                       change_point[chgidx]->addr - last_addr;
-                               /*
-                                * move forward only if the new size
-                                * was non-zero
-                                */
-                               if (new_bios[new_bios_entry].size != 0)
-                                       /*
-                                        * no more space left for new
-                                        * bios entries ?
-                                        */
-                                       if (++new_bios_entry >= E820MAX)
-                                               break;
-                       }
-                       if (current_type != 0)  {
-                               new_bios[new_bios_entry].addr =
-                                       change_point[chgidx]->addr;
-                               new_bios[new_bios_entry].type = current_type;
-                               last_addr = change_point[chgidx]->addr;
-                       }
-                       last_type = current_type;
-               }
-       }
-       /* retain count for new bios entries */
-       new_nr = new_bios_entry;
-
-       /* copy new bios mapping into original location */
-       memcpy(biosmap, new_bios, new_nr * sizeof(struct e820entry));
-       *pnr_map = new_nr;
-
-       return 0;
-}
-
-/*
- * Copy the BIOS e820 map into a safe place.
- *
- * Sanity-check it while we're at it..
- *
- * If we're lucky and live on a modern system, the setup code
- * will have given us a memory map that we can use to properly
- * set up memory.  If we aren't, we'll fake a memory map.
- */
-static int __init copy_e820_map(struct e820entry *biosmap, int nr_map)
-{
-       /* Only one memory region (or negative)? Ignore it */
-       if (nr_map < 2)
-               return -1;
-
-       do {
-               u64 start = biosmap->addr;
-               u64 size = biosmap->size;
-               u64 end = start + size;
-               u32 type = biosmap->type;
-
-               /* Overflow in 64 bits? Ignore the memory map. */
-               if (start > end)
-                       return -1;
-
-               add_memory_region(start, size, type);
-       } while (biosmap++, --nr_map);
-       return 0;
-}
-
 static void early_panic(char *msg)
 {
        early_printk(msg);
@@ -829,114 +493,6 @@ void __init finish_e820_parsing(void)
        }
 }
 
-u64 __init update_memory_range(u64 start, u64 size, unsigned old_type,
-                               unsigned new_type)
-{
-       int i;
-       u64 real_updated_size = 0;
-
-       BUG_ON(old_type == new_type);
-
-       for (i = 0; i < e820.nr_map; i++) {
-               struct e820entry *ei = &e820.map[i];
-               u64 final_start, final_end;
-               if (ei->type != old_type)
-                       continue;
-               /* totally covered? */
-               if (ei->addr >= start &&
-                   (ei->addr + ei->size) <= (start + size)) {
-                       ei->type = new_type;
-                       real_updated_size += ei->size;
-                       continue;
-               }
-               /* partially covered */
-               final_start = max(start, ei->addr);
-               final_end = min(start + size, ei->addr + ei->size);
-               if (final_start >= final_end)
-                       continue;
-               add_memory_region(final_start, final_end - final_start,
-                                        new_type);
-               real_updated_size += final_end - final_start;
-       }
-       return real_updated_size;
-}
-
-void __init update_e820(void)
-{
-       u8 nr_map;
-
-       nr_map = e820.nr_map;
-       if (sanitize_e820_map(e820.map, &nr_map))
-               return;
-       e820.nr_map = nr_map;
-       printk(KERN_INFO "modified physical RAM map:\n");
-       e820_print_map("modified");
-}
-
-unsigned long pci_mem_start = 0xaeedbabe;
-EXPORT_SYMBOL(pci_mem_start);
-
-/*
- * Search for the biggest gap in the low 32 bits of the e820
- * memory space.  We pass this space to PCI to assign MMIO resources
- * for hotplug or unconfigured devices in.
- * Hopefully the BIOS let enough space left.
- */
-__init void e820_setup_gap(void)
-{
-       unsigned long gapstart, gapsize, round;
-       unsigned long last;
-       int i;
-       int found = 0;
-
-       last = 0x100000000ull;
-       gapstart = 0x10000000;
-       gapsize = 0x400000;
-       i = e820.nr_map;
-       while (--i >= 0) {
-               unsigned long long start = e820.map[i].addr;
-               unsigned long long end = start + e820.map[i].size;
-
-               /*
-                * Since "last" is at most 4GB, we know we'll
-                * fit in 32 bits if this condition is true
-                */
-               if (last > end) {
-                       unsigned long gap = last - end;
-
-                       if (gap > gapsize) {
-                               gapsize = gap;
-                               gapstart = end;
-                               found = 1;
-                       }
-               }
-               if (start < last)
-                       last = start;
-       }
-
-       if (!found) {
-               gapstart = (end_pfn << PAGE_SHIFT) + 1024*1024;
-               printk(KERN_ERR "PCI: Warning: Cannot find a gap in the 32bit "
-                      "address range\n"
-                      KERN_ERR "PCI: Unassigned devices with 32bit resource "
-                      "registers may break!\n");
-       }
-
-       /*
-        * See how much we want to round up: start off with
-        * rounding to the next 1MB area.
-        */
-       round = 0x100000;
-       while ((gapsize >> 4) > round)
-               round += round;
-       /* Fun with two's complement */
-       pci_mem_start = (gapstart + round) & -round;
-
-       printk(KERN_INFO
-              "Allocating PCI resources starting at %lx (gap: %lx:%lx)\n",
-              pci_mem_start, gapstart, gapsize);
-}
-
 int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
 {
        int i;
index b54c79c91efd957ab7dddaac2c576f256c1bbadf..5faeab69edd93b004e3049daf0af729456e48236 100644 (file)
@@ -875,7 +875,7 @@ void __init setup_arch(char **cmdline_p)
                get_smp_config();
 #endif
 
-       e820_register_memory();
+       e820_setup_gap();
        e820_mark_nosave_regions();
 
 #ifdef CONFIG_VT
index 7004251fc66bd7925a787bd09ccb675dc0714de8..b5b519feba1ded324a95a3a522dc90e8db2a7f64 100644 (file)
@@ -20,6 +20,20 @@ struct e820map {
        __u32 nr_map;
        struct e820entry map[E820MAX];
 };
+
+extern struct e820map e820;
+
+extern int e820_any_mapped(u64 start, u64 end, unsigned type);
+extern int e820_all_mapped(u64 start, u64 end, unsigned type);
+extern void add_memory_region(u64 start, u64 size, int type);
+extern void e820_print_map(char *who);
+extern int sanitize_e820_map(struct e820entry *biosmap, char *pnr_map);
+extern int copy_e820_map(struct e820entry *biosmap, int nr_map);
+extern u64 update_memory_range(u64 start, u64 size, unsigned old_type,
+                              unsigned new_type);
+extern void update_e820(void);
+extern void e820_setup_gap(void);
+
 #endif /* __ASSEMBLY__ */
 
 #define ISA_START_ADDRESS      0xa0000
index af0711b220dfcb53800ef328cd6b7ded8dd7921d..9576b438fbd955b34f1809db65b9723ca6dedbcb 100644 (file)
 extern void setup_memory_map(void);
 extern void finish_e820_parsing(void);
 
-extern struct e820map e820;
-extern void update_e820(void);
-
-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 propagate_e820_map(void);
 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
-extern void add_memory_region(unsigned long long start,
-                             unsigned long long size, int type);
-extern u64 update_memory_range(u64 start, u64 size, unsigned old_type,
-                               unsigned new_type);
-extern void e820_register_memory(void);
 extern void limit_regions(unsigned long long size);
 extern void init_iomem_resources(struct resource *code_resource,
                                 struct resource *data_resource,
@@ -47,6 +36,5 @@ static inline void e820_mark_nosave_regions(void)
 }
 #endif
 
-
 #endif/*!__ASSEMBLY__*/
 #endif/*__E820_HEADER*/
index 6ae3e2803286b48025538df7c1b4a4292e44077f..9fac77e01441b0b9600ad063e99e6e61248eac9c 100644 (file)
@@ -19,34 +19,22 @@ extern unsigned long find_e820_area(unsigned long start, unsigned long end,
 extern unsigned long find_e820_area_size(unsigned long start,
                                         unsigned long *sizep,
                                         unsigned long align);
-extern void add_memory_region(unsigned long start, unsigned long size,
-                             int type);
-extern u64 update_memory_range(u64 start, u64 size, unsigned old_type,
-                               unsigned new_type);
 extern void setup_memory_region(void);
 extern void contig_e820_setup(void);
 extern unsigned long e820_end_of_ram(void);
 extern void e820_reserve_resources(void);
 extern void e820_mark_nosave_regions(void);
-extern int e820_any_mapped(unsigned long start, unsigned long end,
-                          unsigned type);
-extern int e820_all_mapped(unsigned long start, unsigned long end,
-                          unsigned type);
 extern int e820_any_non_reserved(unsigned long start, unsigned long end);
 extern int is_memory_any_valid(unsigned long start, unsigned long end);
 extern int e820_all_non_reserved(unsigned long start, unsigned long end);
 extern int is_memory_all_valid(unsigned long start, unsigned long end);
 extern unsigned long e820_hole_size(unsigned long start, unsigned long end);
 
-extern void e820_setup_gap(void);
 extern void e820_register_active_regions(int nid, unsigned long start_pfn,
                                         unsigned long end_pfn);
 
 extern void finish_e820_parsing(void);
 
-extern struct e820map e820;
-extern void update_e820(void);
-
 extern void reserve_early(unsigned long start, unsigned long end, char *name);
 extern void free_early(unsigned long start, unsigned long end);
 extern void early_res_to_bootmem(unsigned long start, unsigned long end);