[U-Boot] [PATCH] efi_loader: Always flush in cache line size granularity

[Alexander Graf]

The cache line flush helpers only work properly when they get aligned
start and end addresses. Round our flush range to cache line size. It's
safe because we're guaranteed to flush within a single page which has the
same cache attributes.

Reported-by: Marek Vasut <marex at denx.de>
Signed-off-by: Alexander Graf <agraf at suse.de>
---
 lib/efi_loader/efi_runtime.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 22bcd08..40acec0 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -194,7 +194,8 @@ void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map)
 #endif
 
 		*p = newaddr;
-		flush_dcache_range((ulong)p, (ulong)&p[1]);
+		flush_dcache_range((ulong)p & ~(CONFIG_SYS_CACHELINE_SIZE - 1),
+			ALIGN((ulong)&p[1], CONFIG_SYS_CACHELINE_SIZE));
 	}
 
 #ifndef IS_RELA
-- 
1.8.5.6