source: mainline/boot/arch/sparc64/loader/main.c@ 61e90dd

/*
 * 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_keyboard(&bootinfo.keyboard))
                printf("Error: unable to get keyboard properties\n");

        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(" keyboard at %P (size %d bytes)\n", (uintptr_t) bootinfo.keyboard.addr, bootinfo.keyboard.size);

        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));
}