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arm64: cache maintenance code rework + bugfix

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This commit is contained in:
Leif Lindholm 2013-11-19 10:05:23 +00:00
parent d3def58c52
commit 8a07b55a04
2 changed files with 27 additions and 48 deletions
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30
grub-core/kern/arm64/cache_flush.S
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@ -25,26 +25,25 @@
* Simple cache maintenance functions
*/
// r0 - *beg (inclusive)
// r1 - *end (exclusive)
clean_dcache_range:
// x0 - *beg (inclusive)
// x1 - *end (exclusive)
// x2 - line size
FUNCTION(grub_arch_clean_dcache_range)
// Clean data cache for range to point-of-unification
ldr x2, =EXT_C(grub_arch_cache_dlinesz)
ldr x2, [x2]
1: cmp x0, x1
bge 2f
dc cvau, x0 // Clean Virtual Address to PoU
add x0, x0, x2 // Next line
b 1b
2: dsb ish
isb
ret
// r0 - *beg (inclusive)
// r1 - *end (exclusive)
invalidate_icache_range:
// x0 - *beg (inclusive)
// x1 - *end (exclusive)
// x2 - line size
FUNCTION(grub_arch_invalidate_icache_range)
// Invalidate instruction cache for range to point-of-unification
ldr x2, =EXT_C(grub_arch_cache_ilinesz)
ldr x2, [x2]
1: cmp x0, x1
bge 2f
ic ivau, x0 // Invalidate Virtual Address to PoU
@ -54,14 +53,3 @@ invalidate_icache_range:
2: dsb ish
isb
ret
// void grub_arch_sync_caches_real (void *address, grub_size_t len)
FUNCTION(grub_arch_sync_caches_real)
dsb ish
stp x0, x30, [sp, #-16]!
stp x0, x1, [sp, #-16]!
bl clean_dcache_range
ldp x0, x1, [sp], #16
bl invalidate_icache_range
ldp x0, x30, [sp], #16
ret