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 */ 57