spl: fit: Allocate buffers aligned to cache line size
Allocate memory for buffers at a cache-line boundary to avoid
misaligned buffer address for subsequent reads. This avoids an
additional sector-based memory copy in the fat file system driver:
FAT: Misaligned buffer address (...)
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index a35be52..c1ed31e 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -10,7 +10,7 @@
#include <gzip.h>
#include <image.h>
#include <log.h>
-#include <malloc.h>
+#include <memalign.h>
#include <mapmem.h>
#include <spl.h>
#include <sysinfo.h>
@@ -429,7 +429,9 @@
* depending on how the overlay is stored, so
* don't fail yet if the allocation failed.
*/
- tmpbuffer = malloc(CONFIG_SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ);
+ size_t size = CONFIG_SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ;
+
+ tmpbuffer = malloc_cache_aligned(size);
if (!tmpbuffer)
debug("%s: unable to allocate space for overlays\n",
__func__);
@@ -537,7 +539,7 @@
{
void *buf;
- buf = malloc(size);
+ buf = malloc_cache_aligned(size);
if (!buf) {
pr_err("Could not get FIT buffer of %lu bytes\n", (ulong)size);
pr_err("\tcheck CONFIG_SYS_SPL_MALLOC_SIZE\n");