1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org> 4 * 5 * Copyright (c) 2011 The Chromium OS Authors. 6 * (C) Copyright 2002-2006 7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 8 * 9 * (C) Copyright 2002 10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 11 * Marius Groeger <mgroeger@sysgo.de> 12 */ 13 #include <common.h> 14 15 DECLARE_GLOBAL_DATA_PTR; 16 17 int arch_reserve_stacks(void) 18 { 19 ulong *s; 20 21 /* setup stack pointer for exceptions */ 22 gd->irq_sp = gd->start_addr_sp; 23 24 /* Clear initial stack frame */ 25 s = (ulong *)gd->start_addr_sp; 26 *s = 0; /* Terminate back chain */ 27 *++s = 0; /* NULL return address */ 28 29 return 0; 30 } 31