1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
15 */
16
17/*
18 * Clear page @dest
19 *
20 * Parameters:
21 *	x0 - dest
22 */
23ENTRY(clear_page)
24	mrs	x1, dczid_el0
25	and	w1, w1, #0xf
26	mov	x2, #4
27	lsl	x1, x2, x1
28
291:	dc	zva, x0
30	add	x0, x0, x1
31	tst	x0, #(PAGE_SIZE - 1)
32	b.ne	1b
33	ret
34ENDPROC(clear_page)
35