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arm_coreboot: Support DMA.

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This is needed to support USB and some other busses.
This commit is contained in:
Vladimir Serbinenko 2017-05-08 22:06:04 +02:00
parent 656c3b0d7f
commit 265292f2b0
8 changed files with 155 additions and 25 deletions
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12
grub-core/kern/arm/cache_armv7.S
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@ -33,6 +33,18 @@
# define ISB isb
#define ARMV7 1
FUNCTION(grub_arm_clean_dcache_range_poc_armv7)
DSB
@ Clean data cache for range to point-of-coherence
1: cmp r0, r1
bge 2f
mcr p15, 0, r0, c7, c14, 1 @ DCCMVAC
add r0, r0, r2 @ Next line
b 1b
2: DSB
bx lr
@ r0 - CLIDR
@ r1 - LoC
@ r2 - current level