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1 jermar 1 
/*
2701 jermar 2 
 * Copyright (c) 2008 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup ia32mm 
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 * @{
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 */
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/** @file
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 * @ingroup ia32mm, amd64mm
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 */
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#include <mm/frame.h>
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#include <arch/mm/frame.h>
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#include <mm/as.h>
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#include <config.h>
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#include <arch/boot/boot.h>
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#include <arch/boot/memmap.h>
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#include <panic.h>
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#include <debug.h>
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#include <align.h>
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#include <macros.h>
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#include <print.h>
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size_t hardcoded_unmapped_ktext_size = 0;
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size_t hardcoded_unmapped_kdata_size = 0;
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uintptr_t last_frame = 0;
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static void init_e820_memory(pfn_t minconf)
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{
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    unsigned int i;
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    pfn_t start, conf;
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    size_t size;
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    for (i = 0; i < e820counter; i++) {
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        if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
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            start = ADDR2PFN(ALIGN_UP(e820table[i].base_address, FRAME_SIZE));
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            size = SIZE2FRAMES(ALIGN_DOWN(e820table[i].size, FRAME_SIZE));
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            if ((minconf < start) || (minconf >= start + size))
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                conf = start;
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            else
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                conf = minconf;
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            zone_create(start, size, conf, 0);
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            if (last_frame < ALIGN_UP(e820table[i].base_address +
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                e820table[i].size, FRAME_SIZE))
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                last_frame =
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                    ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE);
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        }          
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    }
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}
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static char *e820names[] = {
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    "invalid",
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    "available",
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    "reserved",
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    "acpi",
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    "nvs",
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    "unusable"
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};
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void physmem_print(void)
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{
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    unsigned int i;
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    char *name;
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    printf("Base               Size               Name\n");
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    printf("------------------ ------------------ ---------\n");
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    for (i = 0; i < e820counter; i++) {
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        if (e820table[i].type <= MEMMAP_MEMORY_UNUSABLE)
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            name = e820names[e820table[i].type];
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        else
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            name = "invalid";
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        printf("%#18llx %#18llx %s\n", e820table[i].base_address,
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            e820table[i].size, name);
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    }
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}
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void frame_arch_init(void)
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{
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    pfn_t minconf;
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    if (config.cpu_active == 1) {
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        minconf = 1;
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#ifdef CONFIG_SMP
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        minconf = max(minconf,
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            ADDR2PFN(AP_BOOT_OFFSET + hardcoded_unmapped_ktext_size +
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            hardcoded_unmapped_kdata_size));
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#endif
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        init_e820_memory(minconf);
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        /* Reserve frame 0 (BIOS data) */
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        frame_mark_unavailable(0, 1);
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#ifdef CONFIG_SMP
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        /* Reserve AP real mode bootstrap memory */
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        frame_mark_unavailable(AP_BOOT_OFFSET >> FRAME_WIDTH,
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            (hardcoded_unmapped_ktext_size +
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            hardcoded_unmapped_kdata_size) >> FRAME_WIDTH);
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#endif
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    }
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}
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/** @}
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 */