1/* 2 * Copyright (c) 2016-2017, 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 <asm_macros.S> 33#include <platform_def.h> 34 35 .weak plat_get_my_stack 36 .weak plat_set_my_stack 37 38 /* ----------------------------------------------------- 39 * uintptr_t plat_get_my_stack (u_register_t mpidr) 40 * 41 * For a given CPU, this function returns the stack 42 * pointer for a stack allocated in device memory. 43 * ----------------------------------------------------- 44 */ 45func plat_get_my_stack 46 mov r3, lr 47 get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE 48 bx r3 49endfunc plat_get_my_stack 50 51 /* ----------------------------------------------------- 52 * void plat_set_my_stack () 53 * 54 * For the current CPU, this function sets the stack 55 * pointer to a stack allocated in normal memory. 56 * ----------------------------------------------------- 57 */ 58func plat_set_my_stack 59 mov r3, lr 60 get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE 61 mov sp, r0 62 bx r3 63endfunc plat_set_my_stack 64 65 /* ----------------------------------------------------- 66 * Per-cpu stacks in normal memory. Each cpu gets a 67 * stack of PLATFORM_STACK_SIZE bytes. 68 * ----------------------------------------------------- 69 */ 70declare_stack platform_normal_stacks, tzfw_normal_stacks, \ 71 PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT 72