| /* |
| * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch.h> |
| #include <arch_helpers.h> |
| #include <assert.h> |
| #include <bl_common.h> |
| #include <debug.h> |
| #include <platform.h> |
| #include <platform_def.h> |
| #include "bl2_private.h" |
| |
| /******************************************************************************* |
| * Load the BL3-0 image if there's one. |
| * If a platform does not want to attempt to load BL3-0 image it must leave |
| * BL30_BASE undefined. |
| * Return 0 on success or if there's no BL3-0 image to load, a negative error |
| * code otherwise. |
| ******************************************************************************/ |
| static int load_bl30(void) |
| { |
| int e = 0; |
| #ifdef BL30_BASE |
| meminfo_t bl30_mem_info; |
| image_info_t bl30_image_info; |
| |
| /* |
| * It is up to the platform to specify where BL3-0 should be loaded if |
| * it exists. It could create space in the secure sram or point to a |
| * completely different memory. |
| * |
| * The entry point information is not relevant in this case as the AP |
| * won't execute the BL3-0 image. |
| */ |
| bl2_plat_get_bl30_meminfo(&bl30_mem_info); |
| e = load_image(&bl30_mem_info, |
| BL30_IMAGE_NAME, |
| BL30_BASE, |
| &bl30_image_info, |
| NULL); |
| |
| if (e == 0) { |
| /* The subsequent handling of BL3-0 is platform specific */ |
| bl2_plat_handle_bl30(&bl30_image_info); |
| } |
| #endif /* BL30_BASE */ |
| |
| return e; |
| } |
| |
| /******************************************************************************* |
| * Load the BL3-1 image. |
| * The bl2_to_bl31_params and bl31_ep_info params will be updated with the |
| * relevant BL3-1 information. |
| * Return 0 on success, a negative error code otherwise. |
| ******************************************************************************/ |
| static int load_bl31(bl31_params_t *bl2_to_bl31_params, |
| entry_point_info_t *bl31_ep_info) |
| { |
| meminfo_t *bl2_tzram_layout; |
| int e; |
| |
| assert(bl2_to_bl31_params != NULL); |
| assert(bl31_ep_info != NULL); |
| |
| /* Find out how much free trusted ram remains after BL2 load */ |
| bl2_tzram_layout = bl2_plat_sec_mem_layout(); |
| |
| /* Set the X0 parameter to BL3-1 */ |
| bl31_ep_info->args.arg0 = (unsigned long)bl2_to_bl31_params; |
| |
| /* Load the BL3-1 image */ |
| e = load_image(bl2_tzram_layout, |
| BL31_IMAGE_NAME, |
| BL31_BASE, |
| bl2_to_bl31_params->bl31_image_info, |
| bl31_ep_info); |
| |
| if (e == 0) |
| bl2_plat_set_bl31_ep_info(bl2_to_bl31_params->bl31_image_info, |
| bl31_ep_info); |
| |
| return e; |
| } |
| |
| /******************************************************************************* |
| * Load the BL3-2 image if there's one. |
| * The bl2_to_bl31_params param will be updated with the relevant BL3-2 |
| * information. |
| * If a platform does not want to attempt to load BL3-2 image it must leave |
| * BL32_BASE undefined. |
| * Return 0 on success or if there's no BL3-2 image to load, a negative error |
| * code otherwise. |
| ******************************************************************************/ |
| static int load_bl32(bl31_params_t *bl2_to_bl31_params) |
| { |
| int e = 0; |
| #ifdef BL32_BASE |
| meminfo_t bl32_mem_info; |
| |
| assert(bl2_to_bl31_params != NULL); |
| |
| /* |
| * It is up to the platform to specify where BL3-2 should be loaded if |
| * it exists. It could create space in the secure sram or point to a |
| * completely different memory. |
| */ |
| bl2_plat_get_bl32_meminfo(&bl32_mem_info); |
| e = load_image(&bl32_mem_info, |
| BL32_IMAGE_NAME, |
| BL32_BASE, |
| bl2_to_bl31_params->bl32_image_info, |
| bl2_to_bl31_params->bl32_ep_info); |
| |
| if (e == 0) { |
| bl2_plat_set_bl32_ep_info( |
| bl2_to_bl31_params->bl32_image_info, |
| bl2_to_bl31_params->bl32_ep_info); |
| } |
| #endif /* BL32_BASE */ |
| |
| return e; |
| } |
| |
| /******************************************************************************* |
| * Load the BL3-3 image. |
| * The bl2_to_bl31_params param will be updated with the relevant BL3-3 |
| * information. |
| * Return 0 on success, a negative error code otherwise. |
| ******************************************************************************/ |
| static int load_bl33(bl31_params_t *bl2_to_bl31_params) |
| { |
| meminfo_t bl33_mem_info; |
| int e; |
| |
| assert(bl2_to_bl31_params != NULL); |
| |
| bl2_plat_get_bl33_meminfo(&bl33_mem_info); |
| |
| /* Load the BL3-3 image in non-secure memory provided by the platform */ |
| e = load_image(&bl33_mem_info, |
| BL33_IMAGE_NAME, |
| plat_get_ns_image_entrypoint(), |
| bl2_to_bl31_params->bl33_image_info, |
| bl2_to_bl31_params->bl33_ep_info); |
| |
| if (e == 0) |
| bl2_plat_set_bl33_ep_info(bl2_to_bl31_params->bl33_image_info, |
| bl2_to_bl31_params->bl33_ep_info); |
| |
| return e; |
| } |
| |
| /******************************************************************************* |
| * The only thing to do in BL2 is to load further images and pass control to |
| * BL3-1. The memory occupied by BL2 will be reclaimed by BL3-x stages. BL2 runs |
| * entirely in S-EL1. |
| ******************************************************************************/ |
| void bl2_main(void) |
| { |
| bl31_params_t *bl2_to_bl31_params; |
| entry_point_info_t *bl31_ep_info; |
| int e; |
| |
| /* Perform remaining generic architectural setup in S-EL1 */ |
| bl2_arch_setup(); |
| |
| /* Perform platform setup in BL2 */ |
| bl2_platform_setup(); |
| |
| tf_printf("BL2 %s\n\r", build_message); |
| |
| /* |
| * Load the subsequent bootloader images |
| */ |
| e = load_bl30(); |
| if (e) { |
| ERROR("Failed to load BL3-0 (%i)\n", e); |
| panic(); |
| } |
| |
| /* |
| * Get a pointer to the memory the platform has set aside to pass |
| * information to BL3-1. |
| */ |
| bl2_to_bl31_params = bl2_plat_get_bl31_params(); |
| bl31_ep_info = bl2_plat_get_bl31_ep_info(); |
| |
| e = load_bl31(bl2_to_bl31_params, bl31_ep_info); |
| if (e) { |
| ERROR("Failed to load BL3-1 (%i)\n", e); |
| panic(); |
| } |
| |
| e = load_bl32(bl2_to_bl31_params); |
| if (e) |
| WARN("Failed to load BL3-2 (%i)\n", e); |
| |
| e = load_bl33(bl2_to_bl31_params); |
| if (e) { |
| ERROR("Failed to load BL3-3 (%i)\n", e); |
| panic(); |
| } |
| |
| /* Flush the params to be passed to memory */ |
| bl2_plat_flush_bl31_params(); |
| |
| /* |
| * Run BL3-1 via an SMC to BL1. Information on how to pass control to |
| * the BL3-2 (if present) and BL3-3 software images will be passed to |
| * BL3-1 as an argument. |
| */ |
| smc(RUN_IMAGE, (unsigned long)bl31_ep_info, 0, 0, 0, 0, 0, 0); |
| } |