source: mainline/boot/arch/mips32/src/main.c@ b278b4e

/*
 * 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 <arch/main.h>
#include <arch/arch.h>
#include <arch/asm.h>
#include <arch/_components.h>
#include <halt.h>
#include <printf.h>
#include <memstr.h>
#include <version.h>
#include <macros.h>
#include <align.h>
#include <str.h>
#include <errno.h>
#include <inflate.h>

#define TOP2ADDR(top)  (((void *) PA2KA(BOOT_OFFSET)) + (top))

static bootinfo_t *bootinfo = (bootinfo_t *) PA2KA(BOOTINFO_OFFSET);
static uint32_t *cpumap = (uint32_t *) PA2KA(CPUMAP_OFFSET);

void bootstrap(void)
{
        version_print();
        
        printf("\nMemory statistics\n");
        printf(" %p|%p: CPU map\n", PA2KA(CPUMAP_OFFSET), CPUMAP_OFFSET);
        printf(" %p|%p: bootstrap stack\n", PA2KA(STACK_OFFSET), STACK_OFFSET);
        printf(" %p|%p: boot info structure\n", PA2KA(BOOTINFO_OFFSET), BOOTINFO_OFFSET);
        printf(" %p|%p: kernel entry point\n", PA2KA(BOOT_OFFSET), BOOT_OFFSET);
        printf(" %p|%p: bootloader entry point\n", PA2KA(LOADER_OFFSET), LOADER_OFFSET);
        
        size_t i;
        for (i = 0; i < COMPONENTS; i++)
                printf(" %p|%p: %s image (%u/%u bytes)\n", components[i].start,
                    KSEG2PA(components[i].start), components[i].name,
                    components[i].inflated, components[i].size);
        
        void *dest[COMPONENTS];
        size_t top = 0;
        size_t cnt = 0;
        bootinfo->cnt = 0;
        for (i = 0; i < min(COMPONENTS, TASKMAP_MAX_RECORDS); i++) {
                top = ALIGN_UP(top, PAGE_SIZE);
                
                if (i > 0) {
                        bootinfo->tasks[bootinfo->cnt].addr = TOP2ADDR(top);
                        bootinfo->tasks[bootinfo->cnt].size = components[i].inflated;
                        
                        str_cpy(bootinfo->tasks[bootinfo->cnt].name,
                            BOOTINFO_TASK_NAME_BUFLEN, components[i].name);
                        
                        bootinfo->cnt++;
                }
                
                dest[i] = TOP2ADDR(top);
                top += components[i].inflated;
                cnt++;
        }
        
        printf("\nInflating components ... ");
        
        for (i = cnt; i > 0; i--) {
                void *tail = dest[i - 1] + components[i].inflated;
                if (tail >= ((void *) PA2KA(LOADER_OFFSET))) {
                        printf("\n%s: Image too large to fit (%p >= %p), halting.\n",
                            components[i].name, tail, PA2KA(LOADER_OFFSET));
                        halt();
                }
                
                printf("%s ", components[i - 1].name);
                
                int err = inflate(components[i - 1].start, components[i - 1].size,
                    dest[i - 1], components[i - 1].inflated);
                
                if (err != EOK) {
                        printf("\n%s: Inflating error %d, halting.\n",
                            components[i - 1].name, err);
                        halt();
                }
        }
        
        printf(".\n");
        
        printf("Copying CPU map ... \n");
        
        bootinfo->cpumap = 0;
        for (i = 0; i < CPUMAP_MAX_RECORDS; i++) {
                if (cpumap[i] != 0)
                        bootinfo->cpumap |= (1 << i);
        }
        
        printf("Booting the kernel ... \n");
        jump_to_kernel((void *) PA2KA(BOOT_OFFSET), bootinfo);
}