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 40 41 /* ----------------------------------------------------- 42 * unsigned long platform_get_stack (unsigned long mpidr) 43 * 44 * For a given CPU, this function returns the stack 45 * pointer for a stack allocated in device memory. 46 * ----------------------------------------------------- 47 */ 48 func platform_get_stack 49 mov x10, x30 // lr 50 get_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE 51 ret x10 52 53 /* ----------------------------------------------------- 54 * void platform_set_stack (unsigned long mpidr) 55 * 56 * For a given CPU, this function sets the stack pointer 57 * to a stack allocated in normal memory. 58 * ----------------------------------------------------- 59 */ 60 func platform_set_stack 61 mov x9, x30 // lr 62 bl platform_get_stack 63 mov sp, x0 64 ret x9 65 66 /* ----------------------------------------------------- 67 * Per-cpu stacks in normal memory. Each cpu gets a 68 * stack of PLATFORM_STACK_SIZE bytes. 69 * ----------------------------------------------------- 70 */ 71 declare_stack platform_normal_stacks, tzfw_normal_stacks, \ 72 PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT 73
