u-boot/arch/arm/lib/stack.c

// 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 <common.h>

DECLARE_GLOBAL_DATA_PTR;

int arch_reserve_stacks(void)
{
#ifdef CONFIG_SPL_BUILD
	gd->start_addr_sp -= 128;	/* leave 32 words for abort-stack */
	gd->irq_sp = gd->start_addr_sp;
#else
	/* setup stack pointer for exceptions */
	gd->irq_sp = gd->start_addr_sp;

# if !defined(CONFIG_ARM64)
	/* leave 3 words for abort-stack, plus 1 for alignment */
	gd->start_addr_sp -= 16;
# endif
#endif

	return 0;
}
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 21:58:06 +00:00			`// SPDX-License-Identifier: GPL-2.0+`
common/board_f: factor out reserve_stacks Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to the architecture needs. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2015-02-06 22:06:45 +00:00			`/*`
Change my mailaddress I'll switch my mails to my own server, so drop all gmail references. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> 2016-05-01 01:46:16 +00:00			`* Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>`
common/board_f: factor out reserve_stacks Introduce arch_reserve_stacks() to tailor gd->start_addr_sp and gd->irq_sp to the architecture needs. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2015-02-06 22:06:45 +00:00			`*`
			`* 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 <common.h>`

			`DECLARE_GLOBAL_DATA_PTR;`

			`int arch_reserve_stacks(void)`
			`{`
			`#ifdef CONFIG_SPL_BUILD`
			`gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */`
			`gd->irq_sp = gd->start_addr_sp;`
			`#else`
			`/* setup stack pointer for exceptions */`
			`gd->irq_sp = gd->start_addr_sp;`

			`# if !defined(CONFIG_ARM64)`
			`/* leave 3 words for abort-stack, plus 1 for alignment */`
			`gd->start_addr_sp -= 16;`
			`# endif`
			`#endif`

			`return 0;`
			`}`