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 ******************************************************************************/ 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 ******************************************************************************/ 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 ******************************************************************************/ 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 ******************************************************************************/ 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