1 /*
2 * Copyright (c) 2013-2020, 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
15 /*******************************************************************************
16 * This function returns a pointer to the most recent 'cpu_context' structure
17 * for the calling CPU that was set as the context for the specified security
18 * state. NULL is returned if no such structure has been specified.
19 ******************************************************************************/
cm_get_context(uint32_t security_state)20 void *cm_get_context(uint32_t security_state)
21 {
22 assert(security_state <= NON_SECURE);
23
24 return get_cpu_data(cpu_context[security_state]);
25 }
26
27 /*******************************************************************************
28 * This function sets the pointer to the current 'cpu_context' structure for the
29 * specified security state for the calling CPU
30 ******************************************************************************/
cm_set_context(void * context,uint32_t security_state)31 void cm_set_context(void *context, uint32_t security_state)
32 {
33 assert(security_state <= NON_SECURE);
34
35 set_cpu_data(cpu_context[security_state], context);
36 }
37
38 /*******************************************************************************
39 * This function returns a pointer to the most recent 'cpu_context' structure
40 * for the CPU identified by `cpu_idx` that was set as the context for the
41 * specified security state. NULL is returned if no such structure has been
42 * specified.
43 ******************************************************************************/
cm_get_context_by_index(unsigned int cpu_idx,unsigned int security_state)44 void *cm_get_context_by_index(unsigned int cpu_idx,
45 unsigned int security_state)
46 {
47 assert(sec_state_is_valid(security_state));
48
49 return get_cpu_data_by_index(cpu_idx, cpu_context[security_state]);
50 }
51
52 /*******************************************************************************
53 * This function sets the pointer to the current 'cpu_context' structure for the
54 * specified security state for the CPU identified by CPU index.
55 ******************************************************************************/
cm_set_context_by_index(unsigned int cpu_idx,void * context,unsigned int security_state)56 void cm_set_context_by_index(unsigned int cpu_idx, void *context,
57 unsigned int security_state)
58 {
59 assert(sec_state_is_valid(security_state));
60
61 set_cpu_data_by_index(cpu_idx, cpu_context[security_state], context);
62 }
63