| Andreas Bießmann | 2542986 | 2015-02-06 23:06:45 +0100 | [diff] [blame] | 1 | /* |
| 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 | |
| 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 | } |