1/* 2 * Copyright (c) 2014, 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 36 .local platform_normal_stacks 37 .weak platform_set_stack 38 .weak platform_get_stack 39 .weak plat_get_my_stack 40 .weak plat_set_my_stack 41 42 /* ----------------------------------------------------- 43 * unsigned long platform_get_stack (unsigned long mpidr) 44 * 45 * For a given CPU, this function returns the stack 46 * pointer for a stack allocated in device memory. 47 * ----------------------------------------------------- 48 */ 49func platform_get_stack 50 mov x10, x30 // lr 51 get_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE 52 ret x10 53endfunc platform_get_stack 54 55 /* ----------------------------------------------------- 56 * void platform_set_stack (unsigned long mpidr) 57 * 58 * For a given CPU, this function sets the stack pointer 59 * to a stack allocated in normal memory. 60 * ----------------------------------------------------- 61 */ 62func platform_set_stack 63 mov x9, x30 // lr 64 bl platform_get_stack 65 mov sp, x0 66 ret x9 67endfunc platform_set_stack 68 69 /* ----------------------------------------------------- 70 * unsigned long plat_get_my_stack () 71 * 72 * For the current CPU, this function returns the stack 73 * pointer for a stack allocated in device memory. 74 * ----------------------------------------------------- 75 */ 76func plat_get_my_stack 77 mov x10, x30 // lr 78 get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE 79 ret x10 80endfunc plat_get_my_stack 81 82 /* ----------------------------------------------------- 83 * void plat_set_my_stack () 84 * 85 * For the current CPU, this function sets the stack 86 * pointer to a stack allocated in normal memory. 87 * ----------------------------------------------------- 88 */ 89func plat_set_my_stack 90 mov x9, x30 // lr 91 bl plat_get_my_stack 92 mov sp, x0 93 ret x9 94endfunc plat_set_my_stack 95 96 /* ----------------------------------------------------- 97 * Per-cpu stacks in normal memory. Each cpu gets a 98 * stack of PLATFORM_STACK_SIZE bytes. 99 * ----------------------------------------------------- 100 */ 101declare_stack platform_normal_stacks, tzfw_normal_stacks, \ 102 PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT 103