| Yatharth Kochar | ede39cb | 2016-11-14 12:01:04 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <assert.h> |
| 32 | #include <bl_common.h> |
| 33 | #include <desc_image_load.h> |
| 34 | #include <plat_arm.h> |
| 35 | |
| 36 | #if JUNO_AARCH32_EL3_RUNTIME |
| 37 | /******************************************************************************* |
| 38 | * This function changes the spsr for BL32 image to bypass |
| 39 | * the check in BL1 AArch64 exception handler. This is needed in the aarch32 |
| 40 | * boot flow as the core comes up in aarch64 and to enter the BL32 image a warm |
| 41 | * reset in aarch32 state is required. |
| 42 | ******************************************************************************/ |
| 43 | int bl2_plat_handle_post_image_load(unsigned int image_id) |
| 44 | { |
| 45 | int err = arm_bl2_handle_post_image_load(image_id); |
| 46 | |
| 47 | if (!err && (image_id == BL32_IMAGE_ID)) { |
| 48 | bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id); |
| 49 | assert(bl_mem_params); |
| 50 | bl_mem_params->ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX, |
| 51 | DISABLE_ALL_EXCEPTIONS); |
| 52 | } |
| 53 | |
| 54 | return err; |
| 55 | } |
| 56 | #endif /* JUNO_AARCH32_EL3_RUNTIME */ |