Subversion Repositories HelenOS

/*

 * Copyright (C) 2005 Martin Decky

 * 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 "main.h" 

#include <printf.h>

#include "asm.h"

#include "_components.h"

#include <balloc.h>

#include <ofw.h>

#include <ofw_tree.h>

#include "ofwarch.h"

#include <align.h>

#define KERNEL_VIRTUAL_ADDRESS 0x400000

bootinfo_t bootinfo;

void bootstrap(void)

{

    printf("HelenOS SPARC64 Bootloader\n");

    component_t components[COMPONENTS];

    init_components(components);

    if (!ofw_memmap(&bootinfo.memmap)) {

        printf("Error: unable to get memory map, halting.\n");

        halt();

    }

    if (bootinfo.memmap.total == 0) {

        printf("Error: no memory detected, halting.\n");

        halt();

    }

    if (!ofw_screen(&bootinfo.screen)) {

        printf("Error: unable to get screen properties, halting.\n");

        halt();

    }

    bootinfo.screen.addr = ofw_translate(bootinfo.screen.addr);

    /* transform scanline to bytes with respect to potential alignment */

    bootinfo.screen.scanline = bootinfo.screen.scanline*bpp2align[bootinfo.screen.bpp >> 3];

    if (!ofw_cpu(&bootinfo.cpu))

        printf("Error: unable to get cpu properties\n");

    printf("\nDevice statistics\n");

    printf(" cpu: %dMHz\n", bootinfo.cpu.clock_frequency/1000000);

    printf(" memory: %dM\n", bootinfo.memmap.total>>20);

    printf(" screen at %P, resolution %dx%d, %d bpp (scanline %d bytes)\n", (uintptr_t) bootinfo.screen.addr, bootinfo.screen.width, bootinfo.screen.height, bootinfo.screen.bpp, bootinfo.screen.scanline);

    printf("\nMemory statistics\n");

    printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS);

    printf(" %P: boot info structure\n", &bootinfo);

    unsigned int i;

    for (i = 0; i < COMPONENTS; i++)

        printf(" %P: %s image (size %d bytes)\n", components[i].start, components[i].name, components[i].size);

    void * base = (void *) KERNEL_VIRTUAL_ADDRESS;

    unsigned int top = 0;

    printf("\nCopying components\n");

    bootinfo.taskmap.count = 0;

    for (i = 0; i < COMPONENTS; i++) {

        printf(" %s...", components[i].name);

        top = ALIGN_UP(top, PAGE_SIZE);

        memcpy(base + top, components[i].start, components[i].size);

        if (i > 0) {

            bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = base + top;

            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = components[i].size;

            bootinfo.taskmap.count++;

        }

        top += components[i].size;

        printf("done.\n");

    }

    balloc_init(&bootinfo.ballocs, ALIGN_UP(((uintptr_t) base) + top, PAGE_SIZE));

    printf("\nCanonizing OpenFirmware device tree...");

    bootinfo.ofw_root = ofw_tree_build();

    printf("done.\n");

    printf("\nBooting the kernel...\n");

    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo, sizeof(bootinfo));

}