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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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34
grub-core/kern/arm/cache.c
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@ -29,6 +29,8 @@ void grub_arm_clean_dcache_range_armv6 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_clean_dcache_range_armv7 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_clean_dcache_range_poc_armv7 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_invalidate_icache_range_armv6 (grub_addr_t start, grub_addr_t end,
grub_addr_t dlinesz);
void grub_arm_invalidate_icache_range_armv7 (grub_addr_t start, grub_addr_t end,
@ -252,6 +254,38 @@ grub_arch_sync_caches (void *address, grub_size_t len)
}
}
void
grub_arch_sync_dma_caches (volatile void *address, grub_size_t len)
{
grub_addr_t start = (grub_addr_t) address;
grub_addr_t end = start + len;
if (type == ARCH_UNKNOWN)
probe_caches ();
start = ALIGN_DOWN (start, grub_arch_cache_max_linesz);
end = ALIGN_UP (end, grub_arch_cache_max_linesz);
switch (type)
{
case ARCH_ARMV6:
grub_arm_clean_dcache_range_armv6 (start, end, grub_arch_cache_dlinesz);
grub_arm_invalidate_icache_range_armv6 (start, end,
grub_arch_cache_ilinesz);
break;
case ARCH_ARMV5_WRITE_THROUGH:
case ARCH_ARMV6_UNIFIED:
grub_arm_clean_dcache_range_armv6 (start, end, grub_arch_cache_dlinesz);
break;
case ARCH_ARMV7:
grub_arm_clean_dcache_range_poc_armv7 (start, end, grub_arch_cache_dlinesz);
grub_arm_invalidate_icache_range_armv7 (start, end,
grub_arch_cache_ilinesz);
break;
/* Pacify GCC. */
case ARCH_UNKNOWN:
break;
}
}
void
grub_arm_disable_caches_mmu (void)
{