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Enable cache on ARM U-Boot port.

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Without it the port is reidiculously slow.
This commit is contained in:
Vladimir Serbinenko 2013-12-23 05:01:58 +01:00
parent 943981ff65
commit bbc52c228f
9 changed files with 182 additions and 3 deletions
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31
grub-core/kern/arm/cache_armv6.S
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@ -41,4 +41,33 @@ FUNCTION(grub_arm_main_id)
FUNCTION(grub_arm_cache_type)
mrc p15, 0, r0, c0, c0, 1
bx lr
bx lr
FUNCTION(grub_arm_clear_mmu_v6)
mov r0, #0
mcr p15, 0, r0, c2, c0, 2
bx lr
FUNCTION(grub_arm_enable_mmu)
mcr p15, 0, r0, c2, c0, 0
mvn r0, #0
mcr p15, 0, r0, c3, c0, 0
mrc p15, 0, r0, c1, c0, 0
bic r0, r0, #(1 << 23)
mcr p15, 0, r0, c1, c0, 0
mrc p15, 0, r0, c1, c0, 0
orr r0, r0, #(1 << 0)
mcr p15, 0, r0, c1, c0, 0
mrc p15, 0, r0, c1, c0, 0
orr r0, r0, #(1 << 2)
mcr p15, 0, r0, c1, c0, 0
mrc p15, 0, r0, c1, c0, 0
orr r0, r0, #(1 << 12)
mcr p15, 0, r0, c1, c0, 0
bx lr