[U-Boot] [PATCH] bootm: flush cache on aligned region

[your name <yurovsky@gmail.com>]

From: Andrey Yurovsky <yurovsky@gmail.com>

bootm_load_os() uses flush_cache() on the region where the OS image is
loaded however the OS image may be part of a FIT image and thereby may
not be aligned with respect to the machine's cache lines. Give
flush_cache() an aligned start of the region to avoid misalignment.

Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
---
 common/bootm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/bootm.c b/common/bootm.c
index adb12137c7..948807af25 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -447,7 +447,10 @@ static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 		bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 		return err;
 	}
-	flush_cache(load, ALIGN(*load_end - load, ARCH_DMA_MINALIGN));
+
+	ulong load_a = ALIGN(load, ARCH_DMA_MINALIGN);
+
+	flush_cache(load_a, ALIGN(*load_end - load_a, ARCH_DMA_MINALIGN));
 
 	debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 	bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
-- 
2.14.3