1 /* 2 * Copyright (c) 2015, 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 <arch.h> 32 #include <arch_helpers.h> 33 #include <assert.h> 34 #include <auth_mod.h> 35 #include <bl_common.h> 36 #include <bl1.h> 37 #include <debug.h> 38 #include <platform.h> 39 #include <platform_def.h> 40 #include <stdint.h> 41 42 /******************************************************************************* 43 * This function is responsible to: 44 * Load SCP_BL2U if platform has defined SCP_BL2U_BASE 45 * Perform platform setup. 46 * Go back to EL3. 47 ******************************************************************************/ 48 void bl2u_main(void) 49 { 50 NOTICE("BL2U: %s\n", version_string); 51 NOTICE("BL2U: %s\n", build_message); 52 53 #if SCP_BL2U_BASE 54 int rc; 55 /* Load the subsequent bootloader images */ 56 rc = bl2u_plat_handle_scp_bl2u(); 57 if (rc) { 58 ERROR("Failed to load SCP_BL2U (%i)\n", rc); 59 panic(); 60 } 61 #endif 62 63 /* Perform platform setup in BL2U after loading SCP_BL2U */ 64 bl2u_platform_setup(); 65 66 /* 67 * Indicate that BL2U is done and resume back to 68 * normal world via an SMC to BL1. 69 * x1 could be passed to Normal world, 70 * so DO NOT pass any secret information. 71 */ 72 smc(FWU_SMC_SEC_IMAGE_DONE, 0, 0, 0, 0, 0, 0, 0); 73 wfi(); 74 } 75