1f27bb139SMarc Zyngier/* 2f27bb139SMarc Zyngier * Copyright (C) 2012 ARM Ltd. 3f27bb139SMarc Zyngier * 4f27bb139SMarc Zyngier * This program is free software; you can redistribute it and/or modify 5f27bb139SMarc Zyngier * it under the terms of the GNU General Public License version 2 as 6f27bb139SMarc Zyngier * published by the Free Software Foundation. 7f27bb139SMarc Zyngier * 8f27bb139SMarc Zyngier * This program is distributed in the hope that it will be useful, 9f27bb139SMarc Zyngier * but WITHOUT ANY WARRANTY; without even the implied warranty of 10f27bb139SMarc Zyngier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11f27bb139SMarc Zyngier * GNU General Public License for more details. 12f27bb139SMarc Zyngier * 13f27bb139SMarc Zyngier * You should have received a copy of the GNU General Public License 14f27bb139SMarc Zyngier * along with this program. If not, see <http://www.gnu.org/licenses/>. 15f27bb139SMarc Zyngier */ 16f27bb139SMarc Zyngier 17f27bb139SMarc Zyngier#include <linux/linkage.h> 18f27bb139SMarc Zyngier#include <linux/const.h> 19f27bb139SMarc Zyngier#include <asm/assembler.h> 20f27bb139SMarc Zyngier#include <asm/page.h> 21f27bb139SMarc Zyngier 22f27bb139SMarc Zyngier/* 23f27bb139SMarc Zyngier * Copy a page from src to dest (both are page aligned) 24f27bb139SMarc Zyngier * 25f27bb139SMarc Zyngier * Parameters: 26f27bb139SMarc Zyngier * x0 - dest 27f27bb139SMarc Zyngier * x1 - src 28f27bb139SMarc Zyngier */ 29f27bb139SMarc ZyngierENTRY(copy_page) 30f27bb139SMarc Zyngier /* Assume cache line size is 64 bytes. */ 31f27bb139SMarc Zyngier prfm pldl1strm, [x1, #64] 32f27bb139SMarc Zyngier1: ldp x2, x3, [x1] 33f27bb139SMarc Zyngier ldp x4, x5, [x1, #16] 34f27bb139SMarc Zyngier ldp x6, x7, [x1, #32] 35f27bb139SMarc Zyngier ldp x8, x9, [x1, #48] 36f27bb139SMarc Zyngier add x1, x1, #64 37f27bb139SMarc Zyngier prfm pldl1strm, [x1, #64] 38f27bb139SMarc Zyngier stnp x2, x3, [x0] 39f27bb139SMarc Zyngier stnp x4, x5, [x0, #16] 40f27bb139SMarc Zyngier stnp x6, x7, [x0, #32] 41f27bb139SMarc Zyngier stnp x8, x9, [x0, #48] 42f27bb139SMarc Zyngier add x0, x0, #64 43f27bb139SMarc Zyngier tst x1, #(PAGE_SIZE - 1) 44f27bb139SMarc Zyngier b.ne 1b 45f27bb139SMarc Zyngier ret 46f27bb139SMarc ZyngierENDPROC(copy_page) 47