1 /*
2 * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <bl31/bl31.h>
10 #include <common/bl_common.h>
11 #include <context.h>
12 #include <lib/el3_runtime/context_mgmt.h>
13 #include <lib/el3_runtime/cpu_data.h>
14 #include <plat/common/platform.h>
15
16 /*******************************************************************************
17 * This function returns a pointer to the most recent 'cpu_context' structure
18 * for the calling CPU that was set as the context for the specified security
19 * state. NULL is returned if no such structure has been specified.
20 ******************************************************************************/
cm_get_context(uint32_t security_state)21 void *cm_get_context(uint32_t security_state)
22 {
23 assert(security_state <= NON_SECURE);
24
25 return get_cpu_data(cpu_context[security_state]);
26 }
27
28 /*******************************************************************************
29 * This function sets the pointer to the current 'cpu_context' structure for the
30 * specified security state for the calling CPU
31 ******************************************************************************/
cm_set_context(void * context,uint32_t security_state)32 void cm_set_context(void *context, uint32_t security_state)
33 {
34 assert(security_state <= NON_SECURE);
35
36 set_cpu_data(cpu_context[security_state], context);
37 }
38
39 /*******************************************************************************
40 * This function returns a pointer to the most recent 'cpu_context' structure
41 * for the CPU identified by `cpu_idx` that was set as the context for the
42 * specified security state. NULL is returned if no such structure has been
43 * specified.
44 ******************************************************************************/
cm_get_context_by_index(unsigned int cpu_idx,unsigned int security_state)45 void *cm_get_context_by_index(unsigned int cpu_idx,
46 unsigned int security_state)
47 {
48 assert(sec_state_is_valid(security_state));
49
50 return get_cpu_data_by_index(cpu_idx, cpu_context[security_state]);
51 }
52
53 /*******************************************************************************
54 * This function sets the pointer to the current 'cpu_context' structure for the
55 * specified security state for the CPU identified by CPU index.
56 ******************************************************************************/
cm_set_context_by_index(unsigned int cpu_idx,void * context,unsigned int security_state)57 void cm_set_context_by_index(unsigned int cpu_idx, void *context,
58 unsigned int security_state)
59 {
60 assert(sec_state_is_valid(security_state));
61
62 set_cpu_data_by_index(cpu_idx, cpu_context[security_state], context);
63 }
64