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 <init.h>
14 #include <asm/global_data.h>
15 
16 DECLARE_GLOBAL_DATA_PTR;
17 
arch_reserve_stacks(void)18 int arch_reserve_stacks(void)
19 {
20 #ifdef CONFIG_XPL_BUILD
21 	gd->start_addr_sp -= 128;	/* leave 32 words for abort-stack */
22 	gd->irq_sp = gd->start_addr_sp;
23 #else
24 	/* setup stack pointer for exceptions */
25 	gd->irq_sp = gd->start_addr_sp;
26 
27 # if !defined(CONFIG_ARM64)
28 	/* leave 3 words for abort-stack, plus 1 for alignment */
29 	gd->start_addr_sp -= 16;
30 # endif
31 #endif
32 
33 	return 0;
34 }
35