1*91f16700Schasinglulu/* 2*91f16700Schasinglulu * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu */ 6*91f16700Schasinglulu 7*91f16700Schasinglulu#include <arch.h> 8*91f16700Schasinglulu#include <asm_macros.S> 9*91f16700Schasinglulu#include <platform_def.h> 10*91f16700Schasinglulu 11*91f16700Schasinglulu .weak plat_get_my_stack 12*91f16700Schasinglulu .weak plat_set_my_stack 13*91f16700Schasinglulu 14*91f16700Schasinglulu /* ----------------------------------------------------- 15*91f16700Schasinglulu * unsigned long plat_get_my_stack () 16*91f16700Schasinglulu * 17*91f16700Schasinglulu * For cold-boot BL images, only the primary CPU needs 18*91f16700Schasinglulu * a stack. This function returns the stack pointer for 19*91f16700Schasinglulu * a stack allocated in normal memory. 20*91f16700Schasinglulu * ----------------------------------------------------- 21*91f16700Schasinglulu */ 22*91f16700Schasinglulufunc plat_get_my_stack 23*91f16700Schasinglulu get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 24*91f16700Schasinglulu bx lr 25*91f16700Schasingluluendfunc plat_get_my_stack 26*91f16700Schasinglulu 27*91f16700Schasinglulu /* ----------------------------------------------------- 28*91f16700Schasinglulu * void plat_set_my_stack () 29*91f16700Schasinglulu * 30*91f16700Schasinglulu * For cold-boot BL images, only the primary CPU needs 31*91f16700Schasinglulu * a stack. This function sets the stack pointer to a 32*91f16700Schasinglulu * stack allocated in normal memory. 33*91f16700Schasinglulu * ----------------------------------------------------- 34*91f16700Schasinglulu */ 35*91f16700Schasinglulufunc plat_set_my_stack 36*91f16700Schasinglulu get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 37*91f16700Schasinglulu mov sp, r0 38*91f16700Schasinglulu bx lr 39*91f16700Schasingluluendfunc plat_set_my_stack 40*91f16700Schasinglulu 41*91f16700Schasinglulu /* ----------------------------------------------------- 42*91f16700Schasinglulu * Per-cpu stacks in normal memory. Each cpu gets a 43*91f16700Schasinglulu * stack of PLATFORM_STACK_SIZE bytes. 44*91f16700Schasinglulu * ----------------------------------------------------- 45*91f16700Schasinglulu */ 46*91f16700Schasingluludeclare_stack platform_normal_stacks, .tzfw_normal_stacks, \ 47*91f16700Schasinglulu PLATFORM_STACK_SIZE, 1, CACHE_WRITEBACK_GRANULE 48