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 <platform.h> 33#include <asm_macros.S> 34 35 36 .local pcpu_dv_mem_stack 37 .local platform_normal_stacks 38 .globl platform_set_stack 39 .globl platform_get_stack 40 .globl platform_set_coherent_stack 41 42 43 /* ----------------------------------------------------- 44 * void platform_set_coherent_stack (unsigned long) 45 * 46 * For cold-boot BL images, only the primary CPU needs a 47 * stack. This function sets the stack pointer to a stack 48 * allocated in device memory. 49 * ----------------------------------------------------- 50 */ 51func platform_set_coherent_stack 52 get_up_stack pcpu_dv_mem_stack, PCPU_DV_MEM_STACK_SIZE 53 mov sp, x0 54 ret 55 56 57 /* ----------------------------------------------------- 58 * unsigned long platform_get_stack (unsigned long) 59 * 60 * For cold-boot BL images, only the primary CPU needs a 61 * stack. This function returns the stack pointer for a 62 * stack allocated in device memory. 63 * ----------------------------------------------------- 64 */ 65func platform_get_stack 66 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 67 ret 68 69 /* ----------------------------------------------------- 70 * void platform_set_stack (unsigned long) 71 * 72 * For cold-boot BL images, only the primary CPU needs a 73 * stack. This function sets the stack pointer to a stack 74 * allocated in normal memory. 75 * ----------------------------------------------------- 76 */ 77func platform_set_stack 78 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE 79 mov sp, x0 80 ret 81 82 /* ----------------------------------------------------- 83 * Single cpu stack in normal memory. 84 * Used for C code during boot, PLATFORM_STACK_SIZE bytes 85 * are allocated 86 * ----------------------------------------------------- 87 */ 88declare_stack platform_normal_stacks, tzfw_normal_stacks, \ 89 PLATFORM_STACK_SIZE, 1 90 91 /* ----------------------------------------------------- 92 * Single cpu stack in device/coherent memory. 93 * PCPU_DV_MEM_STACK_SIZE bytes are allocated. 94 * ----------------------------------------------------- 95 */ 96declare_stack pcpu_dv_mem_stack, tzfw_coherent_mem, \ 97 PCPU_DV_MEM_STACK_SIZE, 1 98