| // 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 <init.h> |
| #include <asm/global_data.h> |
| #include <asm/mp.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int arch_reserve_stacks(void) |
| { |
| ulong *s; |
| |
| /* setup stack pointer for exceptions */ |
| gd->irq_sp = gd->start_addr_sp; |
| |
| /* Clear initial stack frame */ |
| s = (ulong *)gd->start_addr_sp; |
| *s = 0; /* Terminate back chain */ |
| *++s = 0; /* NULL return address */ |
| |
| return 0; |
| } |
| |
| int arch_setup_dest_addr(void) |
| { |
| #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) |
| /* |
| * We need to make sure the location we intend to put secondary core |
| * boot code is reserved and not used by any part of u-boot |
| */ |
| if (gd->relocaddr > determine_mp_bootpg(NULL)) { |
| gd->relocaddr = determine_mp_bootpg(NULL); |
| debug("Reserving MP boot page to %08lx\n", gd->relocaddr); |
| } |
| #endif |
| |
| return 0; |
| } |