1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>
5 * Copyright (c) 2011 The Chromium OS Authors.
6 * (C) Copyright 2002-2006
7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Marius Groeger <mgroeger@sysgo.de>
16 #include <asm/global_data.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 int arch_reserve_stacks(void)
22 #ifdef CONFIG_SPL_BUILD
23 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
24 gd->irq_sp = gd->start_addr_sp;
26 /* setup stack pointer for exceptions */
27 gd->irq_sp = gd->start_addr_sp;
29 # if !defined(CONFIG_ARM64)
30 /* leave 3 words for abort-stack, plus 1 for alignment */
31 gd->start_addr_sp -= 16;
38 static ulong get_sp(void)
42 asm("mov %0, sp" : "=r"(ret) : );
46 void arch_lmb_reserve(struct lmb *lmb)
48 arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 16384);