Return to machdep.c CVS log

Up to [local] / prex-old / sys / arch / i386 / pc

Annotation of prex-old/sys/arch/i386/pc/machdep.c, Revision 1.1

1.1     ! nbrk        1: /*-
        !             2:  * Copyright (c) 2005-2007, Kohsuke Ohtani
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. Neither the name of the author nor the names of any co-contributors
        !            14:  *    may be used to endorse or promote products derived from this software
        !            15:  *    without specific prior written permission.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: /*
        !            31:  * machdep.c - machine-dependent routines
        !            32:  */
        !            33:
        !            34: #include <kernel.h>
        !            35: #include <cpu.h>
        !            36:
        !            37: /*
        !            38:  * Setup pages.
        !            39:  * This reserves some kernel pages which includes a page for
        !            40:  * kernel page directory, interrupt stack, boot stack, etc.
        !            41:  */
        !            42: static void
        !            43: page_setup(void)
        !            44: {
        !            45:        struct mem_map *mem;
        !            46:        int i;
        !            47:
        !            48:        /*
        !            49:         * Find empty slot, and set reserved pages
        !            50:         */
        !            51:        for (i = 0; i < NRESMEM; i++) {
        !            52:                mem = &boot_info->reserved[i];
        !            53:                if (mem->size == 0) {
        !            54:                        mem->start = RESERVED_BASE;
        !            55:                        mem->size = (RESERVED_MAX - RESERVED_BASE);
        !            56:                        break;
        !            57:                }
        !            58:        }
        !            59:        ASSERT(i != NRESMEM);
        !            60: }
        !            61:
        !            62: /*
        !            63:  * Cause an i386 machine reset.
        !            64:  */
        !            65: void
        !            66: machine_reset(void)
        !            67: {
        !            68:        int i;
        !            69:
        !            70:        /*
        !            71:         * Try to do keyboard reset.
        !            72:         */
        !            73:        cli();
        !            74:        outb(0xfe, 0x64);
        !            75:        for (i = 0; i < 10000; i++)
        !            76:                outb(0, 0x80);
        !            77:
        !            78:        /*
        !            79:         * Do cpu reset.
        !            80:         */
        !            81:        cpu_reset();
        !            82:        /* NOTREACHED */
        !            83: }
        !            84:
        !            85: /*
        !            86:  * Machine-dependent startup code
        !            87:  */
        !            88: void
        !            89: machine_init(void)
        !            90: {
        !            91:
        !            92:        cpu_init();
        !            93:
        !            94: #ifdef CONFIG_GDB
        !            95:        gdb_init();
        !            96: #endif
        !            97:        page_setup();
        !            98:        interrupt_init();
        !            99: }