1 /* 2 * Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org> 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 16 DECLARE_GLOBAL_DATA_PTR; 17 18 int 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 } 43