107570d59SYatharth Kochar /* 2*5d5fb10fSMikael Olsson * Copyright (c) 2016-2017,2021, ARM Limited and Contributors. All rights reserved. 307570d59SYatharth Kochar * 482cb2c1aSdp-arm * SPDX-License-Identifier: BSD-3-Clause 507570d59SYatharth Kochar */ 607570d59SYatharth Kochar 707570d59SYatharth Kochar #include <assert.h> 809d40e0eSAntonio Nino Diaz 909d40e0eSAntonio Nino Diaz #include <common/bl_common.h> 1009d40e0eSAntonio Nino Diaz #include <common/desc_image_load.h> 11*5d5fb10fSMikael Olsson #include <lib/fconf/fconf.h> 12*5d5fb10fSMikael Olsson #include <lib/fconf/fconf_dyn_cfg_getter.h> 13*5d5fb10fSMikael Olsson 14bd9344f6SAntonio Nino Diaz #include <plat/arm/common/plat_arm.h> 1507570d59SYatharth Kochar 1607570d59SYatharth Kochar #if JUNO_AARCH32_EL3_RUNTIME 1707570d59SYatharth Kochar /******************************************************************************* 1807570d59SYatharth Kochar * This function changes the spsr for BL32 image to bypass 1907570d59SYatharth Kochar * the check in BL1 AArch64 exception handler. This is needed in the aarch32 2007570d59SYatharth Kochar * boot flow as the core comes up in aarch64 and to enter the BL32 image a warm 2107570d59SYatharth Kochar * reset in aarch32 state is required. 2207570d59SYatharth Kochar ******************************************************************************/ 23490eeb04SDaniel Boulby int arm_bl2_plat_handle_post_image_load(unsigned int image_id) 2407570d59SYatharth Kochar { 2507570d59SYatharth Kochar int err = arm_bl2_handle_post_image_load(image_id); 2607570d59SYatharth Kochar 2707570d59SYatharth Kochar if (!err && (image_id == BL32_IMAGE_ID)) { 2807570d59SYatharth Kochar bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id); 2907570d59SYatharth Kochar assert(bl_mem_params); 3007570d59SYatharth Kochar bl_mem_params->ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX, 3107570d59SYatharth Kochar DISABLE_ALL_EXCEPTIONS); 3207570d59SYatharth Kochar } 3307570d59SYatharth Kochar 3407570d59SYatharth Kochar return err; 3507570d59SYatharth Kochar } 36*5d5fb10fSMikael Olsson 37*5d5fb10fSMikael Olsson #else 38*5d5fb10fSMikael Olsson 39*5d5fb10fSMikael Olsson /******************************************************************************* 40*5d5fb10fSMikael Olsson * This function returns the list of executable images 41*5d5fb10fSMikael Olsson ******************************************************************************/ 42*5d5fb10fSMikael Olsson struct bl_params *plat_get_next_bl_params(void) 43*5d5fb10fSMikael Olsson { 44*5d5fb10fSMikael Olsson struct bl_params *arm_bl_params = arm_get_next_bl_params(); 45*5d5fb10fSMikael Olsson 46*5d5fb10fSMikael Olsson #if __aarch64__ 47*5d5fb10fSMikael Olsson const struct dyn_cfg_dtb_info_t *fw_config_info; 48*5d5fb10fSMikael Olsson bl_mem_params_node_t *param_node; 49*5d5fb10fSMikael Olsson uintptr_t fw_config_base = 0U; 50*5d5fb10fSMikael Olsson entry_point_info_t *ep_info; 51*5d5fb10fSMikael Olsson 52*5d5fb10fSMikael Olsson /* Get BL31 image node */ 53*5d5fb10fSMikael Olsson param_node = get_bl_mem_params_node(BL31_IMAGE_ID); 54*5d5fb10fSMikael Olsson assert(param_node != NULL); 55*5d5fb10fSMikael Olsson 56*5d5fb10fSMikael Olsson /* Get fw_config load address */ 57*5d5fb10fSMikael Olsson fw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, FW_CONFIG_ID); 58*5d5fb10fSMikael Olsson assert(fw_config_info != NULL); 59*5d5fb10fSMikael Olsson 60*5d5fb10fSMikael Olsson fw_config_base = fw_config_info->config_addr; 61*5d5fb10fSMikael Olsson assert(fw_config_base != 0U); 62*5d5fb10fSMikael Olsson 63*5d5fb10fSMikael Olsson /* 64*5d5fb10fSMikael Olsson * Get the entry point info of BL31 image and override 65*5d5fb10fSMikael Olsson * arg1 of entry point info with fw_config base address 66*5d5fb10fSMikael Olsson */ 67*5d5fb10fSMikael Olsson ep_info = ¶m_node->ep_info; 68*5d5fb10fSMikael Olsson ep_info->args.arg1 = (uint32_t)fw_config_base; 69*5d5fb10fSMikael Olsson #endif /* __aarch64__ */ 70*5d5fb10fSMikael Olsson 71*5d5fb10fSMikael Olsson return arm_bl_params; 72*5d5fb10fSMikael Olsson } 7307570d59SYatharth Kochar #endif /* JUNO_AARCH32_EL3_RUNTIME */ 74