/* * Copyright (c) 2013, ARM Limited. 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. */ .globl reset_handler .section reset_code, "ax"; .align 3 /* ----------------------------------------------------- * reset_handler() is the entry point into the trusted * firmware code when a cpu is released from warm or * cold reset. * ----------------------------------------------------- */ reset_handler:; .type reset_handler, %function /* --------------------------------------------- * Perform any processor specific actions upon * reset e.g. cache, tlb invalidations etc. * --------------------------------------------- */ bl cpu_reset_handler _wait_for_entrypoint: /* --------------------------------------------- * Find the type of reset and jump to handler * if present. If the handler is null then it is * a cold boot. The primary cpu will set up the * platform while the secondaries wait for * their turn to be woken up * --------------------------------------------- */ bl read_mpidr bl platform_get_entrypoint cbnz x0, _do_warm_boot bl read_mpidr bl platform_is_primary_cpu cbnz x0, _do_cold_boot /* --------------------------------------------- * Perform any platform specific secondary cpu * actions * --------------------------------------------- */ bl plat_secondary_cold_boot_setup b _wait_for_entrypoint _do_cold_boot: /* --------------------------------------------- * Initialize platform and jump to our c-entry * point for this type of reset * --------------------------------------------- */ adr x0, bl1_main bl platform_cold_boot_init b _panic _do_warm_boot: /* --------------------------------------------- * Jump to BL31 for all warm boot init. * --------------------------------------------- */ blr x0 _panic: b _panic