u-boot-brain/arch/xtensa/lib/relocate.c

/*
 * Copyright (C) 2016 Cadence Design Systems Inc.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <relocate.h>
#include <asm/sections.h>
#include <asm/string.h>

int clear_bss(void)
{
	size_t len = (size_t)&__bss_end - (size_t)&__bss_start;

	memset((void *)&__bss_start, 0x00, len);
	return 0;
}
xtensa: add support for the xtensa processor architecture [2/2] The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core provided by Tensilica, inc. This is the second part of the basic architecture port, adding the 'arch/xtensa' directory and a readme file. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> 2016-08-11 00:36:44 +09:00			`/*`
			`* Copyright (C) 2016 Cadence Design Systems Inc.`
			`*`
			`* SPDX-License-Identifier: GPL-2.0+`
			`*/`

board_f: Make relocation functions generic This header file is used by three archs. It could be used by all of them since relocation is a common function. Move it into a generic file. Signed-off-by: Simon Glass <sjg@chromium.org> 2017-03-31 23:40:38 +09:00			`#include <relocate.h>`
xtensa: add support for the xtensa processor architecture [2/2] The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core provided by Tensilica, inc. This is the second part of the basic architecture port, adding the 'arch/xtensa' directory and a readme file. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> 2016-08-11 00:36:44 +09:00			`#include <asm/sections.h>`
			`#include <asm/string.h>`

			`int clear_bss(void)`
			`{`
			`size_t len = (size_t)&__bss_end - (size_t)&__bss_start;`

			`memset((void *)&__bss_start, 0x00, len);`
			`return 0;`
			`}`