Annotation of prex-old/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 u_long lo_mem;
37: extern u_long 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 = (u_long)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: printk("hi_mem=%x lo_mem=%x\n", hi_mem, lo_mem);
66:
67: bp->main_mem.start = 0;
68: bp->main_mem.size = (size_t)((1024 + hi_mem) * 1024);
69: if (bp->main_mem.size == 0)
70: panic("memory size is 0!");
71:
72: *bpp = bp;
73:
74: if (hi_mem != 0) {
75: reserve_memory((u_long)lo_mem * 1024,
76: (size_t)((1024 - lo_mem) * 1024));
77: }
78: }
CVSweb