source: mainline/arch/ia32/src/mm/frame.c@ f6297e0

/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <mm/frame.h>
#include <arch/mm/frame.h>
#include <mm/vm.h>
#include <config.h>
#include <arch/boot/boot.h>
#include <arch/boot/memmap.h>

size_t hardcoded_unmapped_ktext_size = 0;
size_t hardcoded_unmapped_kdata_size = 0;

void frame_arch_init(void)
{
        __u8 i;
        
        if (config.cpu_active == 1) {
                /* Reserve the NULL frame */
                frame_not_free(0x0);
                
                /* Reserve well-known memory regions */
                frame_region_not_free(0xa0000,0xff000);
                frame_region_not_free(0xfec00000,0xffffffff);
                
                /* Reserve real mode bootstrap memory */
                frame_region_not_free(BOOTSTRAP_OFFSET, BOOTSTRAP_OFFSET + hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size);
                
                for (i=e820counter;i>0;i--) {
                        if (e820table[i-1].type!=MEMMAP_MEMORY_AVAILABLE) {
                                        frame_region_not_free(e820table[i-1].base_address, e820table[i-1].base_address+e820table[i-1].size);
                                }
                        }
        }
}