source: mainline/kernel/arch/arm32/include/mm/frame.h@ c39544a

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since c39544a was 6250c37, checked in by Jiri Svoboda <jiri@…>, 15 years ago

Fix first physical frame number computation. Only create kernel identity mapping from beginning of physical memory, not from zero.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Copyright (c) 2007 Pavel Jancik, Michal Kebrt
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 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup arm32mm
30 * @{
31 */
32/** @file
33 * @brief Frame related declarations.
34 */
35
36#ifndef KERN_arm32_FRAME_H_
37#define KERN_arm32_FRAME_H_
38
39#define FRAME_WIDTH 12 /* 4KB frames */
40#define FRAME_SIZE (1 << FRAME_WIDTH)
41
42#ifdef KERNEL
43#ifndef __ASM__
44
45#include <typedefs.h>
46
47#define BOOT_PAGE_TABLE_SIZE 0x4000
48
49#ifdef MACHINE_gta02
50#define BOOT_PAGE_TABLE_ADDRESS 0x30010000
51#else
52#define BOOT_PAGE_TABLE_ADDRESS 0x00008000
53#endif
54
55#define BOOT_PAGE_TABLE_START_FRAME (BOOT_PAGE_TABLE_ADDRESS >> FRAME_WIDTH)
56#define BOOT_PAGE_TABLE_SIZE_IN_FRAMES (BOOT_PAGE_TABLE_SIZE >> FRAME_WIDTH)
57
58#ifdef MACHINE_gta02
59#define PHYSMEM_START_ADDR 0x30008000
60#else
61#define PHYSMEM_START_ADDR 0x00000000
62#endif
63
64extern uintptr_t last_frame;
65
66extern void frame_arch_init(void);
67extern void boot_page_table_free(void);
68#define physmem_print()
69
70#endif /* __ASM__ */
71#endif /* KERNEL */
72
73#endif
74
75/** @}
76 */
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