| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2013 Free Software Foundation, Inc. |
| * |
| * GRUB is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * GRUB is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with GRUB. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <grub/symbol.h> |
| |
| .file "cache_flush.S" |
| .text |
| |
| /* |
| * Simple cache maintenance functions |
| */ |
| |
| // x0 - *beg (inclusive) |
| // x1 - *end (exclusive) |
| // x2 - line size |
| FUNCTION(grub_arch_clean_dcache_range) |
| // Clean data cache for range to point-of-unification |
| 1: cmp x0, x1 |
| b.ge 2f |
| dc cvau, x0 // Clean Virtual Address to PoU |
| add x0, x0, x2 // Next line |
| b 1b |
| 2: dsb ish |
| isb |
| ret |
| |
| // x0 - *beg (inclusive) |
| // x1 - *end (exclusive) |
| // x2 - line size |
| FUNCTION(grub_arch_invalidate_icache_range) |
| // Invalidate instruction cache for range to point-of-unification |
| 1: cmp x0, x1 |
| b.ge 2f |
| ic ivau, x0 // Invalidate Virtual Address to PoU |
| add x0, x0, x2 // Next line |
| b 1b |
| // Branch predictor invalidation not needed on AArch64 |
| 2: dsb ish |
| isb |
| ret |
