source: mainline/kernel/arch/arm32/include/mm/km.h@ db64d094

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since db64d094 was db64d094, checked in by Jakub Jermar <jakub@…>, 14 years ago

Quarter the size of arm32's kernel non-identity to compensate for
the unusually large PTL0 (i.e. four frames). This reduces the amount
of memory needed for sharing the kernel non-identity across all
address spaces from 4MiB to 1MiB (i.e. the same sime as on ia32).

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 * Copyright (c) 2011 Jakub Jermar
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 */
34
35#ifndef KERN_arm32_KM_H_
36#define KERN_arm32_KM_H_
37
38#include <typedefs.h>
39
40#define KM_ARM32_IDENTITY_START UINT32_C(0x80000000)
41#define KM_ARM32_IDENTITY_SIZE UINT32_C(0x70000000)
42
43#define KM_ARM32_NON_IDENTITY_START UINT32_C(0xf0000000)
44#define KM_ARM32_NON_IDENTITY_SIZE UINT32_C(0x10000000)
45
46extern void km_identity_arch_init(void);
47extern void km_non_identity_arch_init(void);
48extern bool km_is_non_identity_arch(uintptr_t);
49
50#endif
51
52/** @}
53 */
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