1 files changed, 5 insertions, 406 deletions

diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c
index 751d517d802c..dfe25751038b 100644
--- a/arch/x86/kernel/e820_32.c
+++ b/arch/x86/kernel/e820_32.c
@@ -16,21 +16,6 @@
 #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");
-}