1/* 2 * Copyright (c) 2014-2017, 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 36 .local platform_normal_stacks 37 .weak plat_set_my_stack 38 .weak plat_get_my_stack 39 .weak platform_set_stack 40 .weak platform_get_stack 41 42 /* ----------------------------------------------------- 43 * uintptr_t plat_get_my_stack () 44 * 45 * For cold-boot BL images, only the primary CPU needs a 46 * stack. This function returns the stack pointer for a 47 * stack allocated in device memory. 48 * ----------------------------------------------------- 49 */ 50func plat_get_my_stack 51 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 52 ret 53endfunc plat_get_my_stack 54 55 /* ----------------------------------------------------- 56 * void plat_set_my_stack () 57 * 58 * For cold-boot BL images, only the primary CPU needs a 59 * stack. This function sets the stack pointer to a stack 60 * allocated in normal memory. 61 * ----------------------------------------------------- 62 */ 63func plat_set_my_stack 64 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 65 mov sp, x0 66 ret 67endfunc plat_set_my_stack 68 69 /* ----------------------------------------------------- 70 * unsigned long platform_get_stack () 71 * 72 * For cold-boot BL images, only the primary CPU needs a 73 * stack. This function returns the stack pointer for a 74 * stack allocated in device memory. This function 75 * is deprecated. 76 * ----------------------------------------------------- 77 */ 78func_deprecated platform_get_stack 79 b plat_get_my_stack 80endfunc_deprecated platform_get_stack 81 82 /* ----------------------------------------------------- 83 * void platform_set_stack () 84 * 85 * For cold-boot BL images, only the primary CPU needs a 86 * stack. This function sets the stack pointer to a stack 87 * allocated in normal memory.This function is 88 * deprecated. 89 * ----------------------------------------------------- 90 */ 91func_deprecated platform_set_stack 92 b plat_set_my_stack 93endfunc_deprecated platform_set_stack 94 95 /* ----------------------------------------------------- 96 * Single cpu stack in normal memory. 97 * Used for C code during boot, PLATFORM_STACK_SIZE bytes 98 * are allocated 99 * ----------------------------------------------------- 100 */ 101declare_stack platform_normal_stacks, tzfw_normal_stacks, \ 102 PLATFORM_STACK_SIZE, 1, CACHE_WRITEBACK_GRANULE 103