[u-boot.git] / arch / powerpc / lib / stack.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2015 Andreas Bießmann <[email protected]>
 *
 * Copyright (c) 2011 The Chromium OS Authors.
 * (C) Copyright 2002-2006
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <[email protected]>
 */
#include <common.h>
#include <init.h>
#include <asm/global_data.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;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
68145d4c	2	/*
09c2b8f3	3	* Copyright (c) 2015 Andreas Bießmann <[email protected]>
68145d4c AB	4	*
	5	* Copyright (c) 2011 The Chromium OS Authors.
	6	* (C) Copyright 2002-2006
	7	* Wolfgang Denk, DENX Software Engineering, [email protected].
	8	*
	9	* (C) Copyright 2002
	10	* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	11	* Marius Groeger <[email protected]>
68145d4c AB	12	*/
68145d4c AB	13	#include <common.h>
691d719d	14	#include <init.h>
401d1c4f	15	#include <asm/global_data.h>
68145d4c AB	16
	17	DECLARE_GLOBAL_DATA_PTR;
	18
	19	int arch_reserve_stacks(void)
	20	{
	21	ulong *s;
	22
	23	/* setup stack pointer for exceptions */
	24	gd->irq_sp = gd->start_addr_sp;
	25
	26	/* Clear initial stack frame */
	27	s = (ulong *)gd->start_addr_sp;
	28	s = 0; / Terminate back chain */
	29	++s = 0; / NULL return address */
	30
	31	return 0;
	32	}