summaryrefslogtreecommitdiff
path: root/big-little/virtualisor/include/mem_trap.h
blob: ab68259b7652de80884b71d0f7fa439f9a1132fe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/*
 * Copyright (c) 2012, ARM Limited. All rights reserved.
 *       
 * Redistribution and use in source and binary forms, with
 * or without modification, are permitted provided that the
 * following conditions are met:
 *     
 * Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the 
 * following disclaimer.
 *
 * Redistributions in binary form must reproduce the
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation 
 * and/or other materials provided with the distribution.
 *      
 * Neither the name of ARM nor the names of its
 * contributors may be used to endorse or promote products
 * derived from this software without specific prior written
 * permission.                        
 */

#ifndef __MEM_TRAP_H__
#define __MEM_TRAP_H__

/*
 * Data structure that holds info about all traps populated
 * in the 2nd stage translation tables. It does not need to
 * interpret the traps but simple save and restore them.
 * This should prevent the usage of trap specific save/restore
 * routines.
 */
typedef struct trap_data {
	/* Does this structure contain valid data */
	unsigned valid;
	/* Which cluster to save/restore this trap on */
	unsigned cluster_id;
	/* Translation table address */
	unsigned long long table;
	/* Index corresponding to mapping */
	unsigned index;
	/* TODO: Revisit why we need two variables here */
	/* Original Descriptor */
	unsigned long long prev_desc;
	/* Current Descriptor */
	unsigned long long cur_desc;
} mem_trap_data;

extern unsigned mem_trap_setup(unsigned, mem_trap_data *);
extern mem_trap_data s2_trap_section$$Base;
extern unsigned s2_trap_section$$Length;

#endif				/* __MEM_TRAP_H__ */