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1 jermar 1
/*
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 * 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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1 jermar 36
#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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    for (i = 0; i < e820counter; i++) {
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        uint64_t base = e820table[i].base_address;
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        uint64_t size = e820table[i].size;
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#ifdef __32_BITS__
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        /* Ignore physical memory above 4 GB */
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        if ((base >> 32) != 0)
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            continue;
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        /* Clip regions above 4 GB */
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        if (((base + size) >> 32) != 0)
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            size = 0xffffffff - base;
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#endif
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        pfn_t pfn;
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        count_t count;
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        if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
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            /* To be safe, make available zone possibly smaller */
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            pfn = ADDR2PFN(ALIGN_UP(base, FRAME_SIZE));
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            count = SIZE2FRAMES(ALIGN_DOWN(size, FRAME_SIZE));
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            pfn_t conf;
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            if ((minconf < pfn) || (minconf >= pfn + count))
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                conf = pfn;
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            else
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                conf = minconf;
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            zone_create(pfn, count, conf, ZONE_AVAILABLE);
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            // XXX this has to be removed
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            if (last_frame < ALIGN_UP(base + size, FRAME_SIZE))
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                last_frame = ALIGN_UP(base + size, FRAME_SIZE);
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        }
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        if (e820table[i].type == MEMMAP_MEMORY_RESERVED) {
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            /* To be safe, make reserved zone possibly larger */
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            pfn = ADDR2PFN(ALIGN_DOWN(base, FRAME_SIZE));
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            count = SIZE2FRAMES(ALIGN_UP(size, FRAME_SIZE));
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            zone_create(pfn, count, 0, ZONE_RESERVED);
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        }
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        if (e820table[i].type == MEMMAP_MEMORY_ACPI) {
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            /* To be safe, make firmware zone possibly larger */
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            pfn = ADDR2PFN(ALIGN_DOWN(base, (uintptr_t) FRAME_SIZE));
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            count = SIZE2FRAMES(ALIGN_UP(size, (uintptr_t) FRAME_SIZE));
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            zone_create(pfn, count, 0, ZONE_FIRMWARE);
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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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1 jermar 145
    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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533 bondari 155
        /* Reserve frame 0 (BIOS data) */
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        frame_mark_unavailable(0, 1);
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693 decky 158
#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
1 jermar 164
    }
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}
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1888 jermar 167
/** @}
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 */