blob: cf10a53ec6f961cababdc0be69364e01328ee04f [file] [log] [blame]
Andreas Bießmann68145d42015-02-06 23:06:45 +01001/*
2 * Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
3 *
4 * Copyright (c) 2011 The Chromium OS Authors.
5 * (C) Copyright 2002-2006
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 *
8 * (C) Copyright 2002
9 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
10 * Marius Groeger <mgroeger@sysgo.de>
11 *
12 * SPDX-License-Identifier: GPL-2.0+
13 */
14#include <common.h>
15
16DECLARE_GLOBAL_DATA_PTR;
17
18int arch_reserve_stacks(void)
19{
20#ifdef CONFIG_SPL_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# ifdef CONFIG_USE_IRQ
29 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
30 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
31 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
32
33 /* 8-byte alignment for ARM ABI compliance */
34 gd->start_addr_sp &= ~0x07;
35# endif
36 /* leave 3 words for abort-stack, plus 1 for alignment */
37 gd->start_addr_sp -= 16;
38# endif
39#endif
40
41 return 0;
42}