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/*
* 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
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