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1018 decky 1
/*
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 * Copyright (C) 2005 Martin Decky
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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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#define KERNEL_VIRTUAL_ADDRESS 0x400000
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bootinfo_t bootinfo;
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void bootstrap(void)
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{
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    printf("HelenOS SPARC64 Bootloader\n");
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    component_t components[COMPONENTS];
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    init_components(components);
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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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    if (!ofw_screen(&bootinfo.screen)) {
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        printf("Error: unable to get screen properties, halting.\n");
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        halt();
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    }
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    bootinfo.screen.addr = ofw_translate(bootinfo.screen.addr);
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    /* transform scanline to bytes with respect to potential alignment */
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    bootinfo.screen.scanline = bootinfo.screen.scanline*bpp2align[bootinfo.screen.bpp >> 3];
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    if (!ofw_keyboard(&bootinfo.keyboard))
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        printf("Error: unable to get keyboard properties\n");
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    if (!ofw_cpu(&bootinfo.cpu))
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        printf("Error: unable to get cpu properties\n");
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    printf("\nDevice statistics\n");
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    printf(" cpu: %dMHz\n", bootinfo.cpu.clock_frequency/1000000);
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    printf(" memory: %dM\n", bootinfo.memmap.total>>20);
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    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);
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    printf(" keyboard at %P (size %d bytes)\n", (uintptr_t) bootinfo.keyboard.addr, bootinfo.keyboard.size);
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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, 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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        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 = base + top;
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            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = 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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    balloc_init(&bootinfo.ballocs, ALIGN_UP(((uintptr_t) base) + top, 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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    printf("\nBooting the kernel...\n");
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    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo, sizeof(bootinfo));
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}