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