1 files changed, 16 insertions, 0 deletions

diff --git a/firmware/export/config.h b/firmware/export/config.h
index f731fb5513..96fec57d7b 100644
--- a/firmware/export/config.h
+++ b/firmware/export/config.h
@@ -889,6 +889,22 @@ Lyre prototype 1 */
 
 #endif /* HAVE_USBSTACK */
 
+/* Storage alignment: the mask specifies a mask of bits which should be
+ * clear in addresses used for storage_{read,write}_sectors(). This is
+ * only relevant for buffers that will contain one or more whole sectors.
+ */ 
+
+/* PP502x DMA requires an alignment of at least 16 bytes */
+#ifdef HAVE_ATA_DMA
+#ifdef  CPU_PP502x
+#define STORAGE_ALIGN_MASK 15
+#endif
+#endif /* HAVE_ATA_DMA */
+
+/* by default no alignment is required */
+#ifndef STORAGE_ALIGN_MASK
+#define STORAGE_ALIGN_MASK 0
+#endif
 
 
 #endif /* __CONFIG_H__ */