1 /*
2  * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef __XLAT_TABLES_ARCH_H__
8 #define __XLAT_TABLES_ARCH_H__
9 
10 #ifdef AARCH32
11 #include "aarch32/xlat_tables_aarch32.h"
12 #else
13 #include "aarch64/xlat_tables_aarch64.h"
14 #endif
15 
16 /*
17  * Evaluates to 1 if the given virtual address space size is valid, or 0 if it's
18  * not.
19  *
20  * A valid size is one that is a power of 2 and is within the architectural
21  * limits. Not that these limits are different for AArch32 and AArch64.
22  */
23 #define CHECK_VIRT_ADDR_SPACE_SIZE(size)			\
24 	(((size) >= MIN_VIRT_ADDR_SPACE_SIZE) &&		\
25 	((size) <= MAX_VIRT_ADDR_SPACE_SIZE) &&			\
26 	IS_POWER_OF_TWO(size))
27 
28 /*
29  * Evaluates to 1 if the given physical address space size is a power of 2,
30  * or 0 if it's not.
31  */
32 #define CHECK_PHY_ADDR_SPACE_SIZE(size)				\
33 	(IS_POWER_OF_TWO(size))
34 
35 /*
36  * Compute the number of entries required at the initial lookup level to address
37  * the whole virtual address space.
38  */
39 #define GET_NUM_BASE_LEVEL_ENTRIES(addr_space_size)			\
40 	((addr_space_size) >>						\
41 		XLAT_ADDR_SHIFT(GET_XLAT_TABLE_LEVEL_BASE(addr_space_size)))
42 
43 #endif /* __XLAT_TABLES_ARCH_H__ */
44