1 /* 2 * Copyright (c) 2015-2017, 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 <console.h> 38 #include <debug.h> 39 #include <platform.h> 40 #include <platform_def.h> 41 #include <stdint.h> 42 43 /******************************************************************************* 44 * This function is responsible to: 45 * Load SCP_BL2U if platform has defined SCP_BL2U_BASE 46 * Perform platform setup. 47 * Go back to EL3. 48 ******************************************************************************/ 49 void bl2u_main(void) 50 { 51 NOTICE("BL2U: %s\n", version_string); 52 NOTICE("BL2U: %s\n", build_message); 53 54 #if SCP_BL2U_BASE 55 int rc; 56 /* Load the subsequent bootloader images */ 57 rc = bl2u_plat_handle_scp_bl2u(); 58 if (rc) { 59 ERROR("Failed to load SCP_BL2U (%i)\n", rc); 60 panic(); 61 } 62 #endif 63 64 /* Perform platform setup in BL2U after loading SCP_BL2U */ 65 bl2u_platform_setup(); 66 67 console_flush(); 68 69 /* 70 * Indicate that BL2U is done and resume back to 71 * normal world via an SMC to BL1. 72 * x1 could be passed to Normal world, 73 * so DO NOT pass any secret information. 74 */ 75 smc(FWU_SMC_SEC_IMAGE_DONE, 0, 0, 0, 0, 0, 0, 0); 76 wfi(); 77 } 78