stack.c 828 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>
  4. *
  5. * Copyright (c) 2011 The Chromium OS Authors.
  6. * (C) Copyright 2002-2006
  7. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  8. *
  9. * (C) Copyright 2002
  10. * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  11. * Marius Groeger <mgroeger@sysgo.de>
  12. */
  13. #include <common.h>
  14. #include <init.h>
  15. #include <asm/global_data.h>
  16. DECLARE_GLOBAL_DATA_PTR;
  17. int arch_reserve_stacks(void)
  18. {
  19. #ifdef CONFIG_SPL_BUILD
  20. gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
  21. gd->irq_sp = gd->start_addr_sp;
  22. #else
  23. /* setup stack pointer for exceptions */
  24. gd->irq_sp = gd->start_addr_sp;
  25. # if !defined(CONFIG_ARM64)
  26. /* leave 3 words for abort-stack, plus 1 for alignment */
  27. gd->start_addr_sp -= 16;
  28. # endif
  29. #endif
  30. return 0;
  31. }