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Annotation of prex/boot/i386/pc/bootinfo.c, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2005, 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: #include <boot.h>
                     31: #include "platform.h"
                     32:
                     33: #define SCREEN_80x25 1
                     34: /* #define SCREEN_80x50 1 */
                     35:
                     36: extern paddr_t lo_mem;
                     37: extern paddr_t hi_mem;
                     38:
                     39: /*
                     40:  * Setup boot information.
                     41:  *
                     42:  * Note: The memory size are already got via BIOS call in head.S.
                     43:  */
                     44: void
                     45: setup_bootinfo(struct boot_info **bpp)
                     46: {
                     47:        struct boot_info *bp;
                     48:
                     49:        bp = (struct boot_info *)BOOT_INFO;
                     50:        memset(bp, 0, BOOT_INFO_SIZE);
                     51:
                     52:        bp->archive = (paddr_t)ARCHIVE_START;
                     53:
                     54: #ifdef SCREEN_80x25
                     55:        bp->video.text_x = 80;
                     56:        bp->video.text_y = 25;
                     57: #else
                     58:        bp->video.text_x = 80;
                     59:        bp->video.text_y = 50;
                     60: #endif
                     61: #ifdef CONFIG_MIN_MEMORY
                     62:        lo_mem = 512;   /* 512KB */
                     63:        hi_mem = 0;
                     64: #endif
                     65:        bp->main_mem.start = 0;
                     66:        bp->main_mem.size = (size_t)((1024 + hi_mem) * 1024);
                     67:        if (bp->main_mem.size == 0)
                     68:                panic("memory size is 0!");
                     69:
                     70:        *bpp = bp;
                     71:
                     72:        if (hi_mem != 0) {
                     73:                reserve_memory(lo_mem * 1024,
                     74:                               (size_t)((1024 - lo_mem) * 1024));
                     75:        }
                     76: }