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1018 decky 1
/*
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 * Copyright (c) 2005 Martin Decky
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 * Copyright (c) 2006 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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#include "main.h" 
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#include <printf.h>
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#include "asm.h"
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#include "_components.h"
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#include <balloc.h>
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#include <ofw.h>
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#include <ofw_tree.h>
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#include "ofwarch.h"
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#include <align.h>
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bootinfo_t bootinfo;
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component_t components[COMPONENTS];
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char *release = RELEASE;
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#ifdef REVISION
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    char *revision = ", revision " REVISION;
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#else
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    char *revision = "";
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#endif
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#ifdef TIMESTAMP
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    char *timestamp = "\nBuilt on " TIMESTAMP;
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#else
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    char *timestamp = "";
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#endif
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/** Print version information. */
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static void version_print(void)
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{
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    printf("HelenOS SPARC64 Bootloader\nRelease %s%s%s\n"
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        "Copyright (c) 2006 HelenOS project\n",
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        release, revision, timestamp);
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}
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void bootstrap(void)
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{
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    version_print();
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    init_components(components);
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    if (!ofw_get_physmem_start(&bootinfo.physmem_start)) {
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        printf("Error: unable to get start of physical memory.\n");
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        halt();
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    }
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    if (!ofw_memmap(&bootinfo.memmap)) {
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        printf("Error: unable to get memory map, halting.\n");
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        halt();
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    }
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    if (bootinfo.memmap.total == 0) {
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        printf("Error: no memory detected, halting.\n");
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        halt();
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    }
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    /*
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     * SILO for some reason adds 0x400000 and subtracts
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     * bootinfo.physmem_start to/from silo_ramdisk_image.
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     * We just need plain physical address so we fix it up.
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     */
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    if (silo_ramdisk_image) {
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        silo_ramdisk_image += bootinfo.physmem_start;
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        silo_ramdisk_image -= 0x400000;
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    }
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    printf("\nSystem info\n");
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    printf(" memory: %dM starting at %P\n",
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        bootinfo.memmap.total >> 20, bootinfo.physmem_start);
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    printf("\nMemory statistics\n");
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    printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS);
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    printf(" %P: boot info structure\n", &bootinfo);
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    unsigned int i;
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    for (i = 0; i < COMPONENTS; i++)
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        printf(" %P: %s image (size %d bytes)\n", components[i].start,
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            components[i].name, components[i].size);
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    void * base = (void *) KERNEL_VIRTUAL_ADDRESS;
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    unsigned int top = 0;
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    printf("\nCopying components\n");
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    bootinfo.taskmap.count = 0;
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    for (i = 0; i < COMPONENTS; i++) {
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        printf(" %s...", components[i].name);
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        top = ALIGN_UP(top, PAGE_SIZE);
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        /*
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         * At this point, we claim the physical memory that we are
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         * going to use. We should be safe in case of the virtual
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         * address space because the OpenFirmware, according to its
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         * SPARC binding, should restrict its use of virtual memory
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         * to addresses from [0xffd00000; 0xffefffff] and
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         * [0xfe000000; 0xfeffffff].
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         */
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        (void) ofw_claim_phys(bootinfo.physmem_start + base + top,
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            ALIGN_UP(components[i].size, PAGE_SIZE));
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        memcpy(base + top, components[i].start, components[i].size);
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        if (i > 0) {
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            bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
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                base + top;
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            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
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                components[i].size;
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            bootinfo.taskmap.count++;
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        }
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        top += components[i].size;
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        printf("done.\n");
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    }
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    /*
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     * Claim the physical memory for the boot allocator.
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     * Initialize the boot allocator.
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     */
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    (void) ofw_claim_phys(bootinfo.physmem_start +
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        base + ALIGN_UP(top, PAGE_SIZE), BALLOC_MAX_SIZE);
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    balloc_init(&bootinfo.ballocs, ALIGN_UP(((uintptr_t) base) + top,
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        PAGE_SIZE));
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    printf("\nCanonizing OpenFirmware device tree...");
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    bootinfo.ofw_root = ofw_tree_build();
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    printf("done.\n");
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#ifdef CONFIG_SMP
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    printf("\nChecking for secondary processors...");
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    if (!ofw_cpu())
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        printf("Error: unable to get CPU properties\n");
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    printf("done.\n");
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#endif
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    printf("\nBooting the kernel...\n");
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    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS,
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        bootinfo.physmem_start | BSP_PROCESSOR, &bootinfo,
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        sizeof(bootinfo));
1018 decky 165
}
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