| Gary Morrison | 3d7f654 | 2021-01-27 13:08:47 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <lib/el3_runtime/context_mgmt.h> |
| 8 | #include <lib/el3_runtime/pubsub_events.h> |
| 9 | |
| 10 | #include <platform_def.h> |
| 11 | |
| 12 | |
| 13 | /******************************************************************************* |
| 14 | * File contains EL2 equivalents of EL3 functions from |
| 15 | * .../lib/el3_runtime/aarch64/context_mgmt.c |
| 16 | ******************************************************************************/ |
| 17 | |
| 18 | /******************************************************************************* |
| 19 | * Prepare the CPU system registers for first entry into secure or normal world |
| 20 | * |
| 21 | * The majority of the work needed is only for switching to non-secure, which |
| 22 | * is not available on v8-R64 cores, so this function is very simple. |
| 23 | ******************************************************************************/ |
| 24 | void cm_prepare_el2_exit(uint32_t security_state) |
| 25 | { |
| 26 | cm_el1_sysregs_context_restore(security_state); |
| 27 | cm_set_next_eret_context(security_state); |
| 28 | } |