This area doesn't support all cache operations.
Update #3869.
---
rtemsbsd/rtems/rtems-kernel-bus-dma.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/rtemsbsd/rtems/rtems-kernel-bus-dma.c
b/rtemsbsd/rtems/rtems-kernel-bus-dma.c
index 8c15e92b..8674bef1 100644
--- a/rtemsbsd/rtems/rtems-kernel-bus-dma.c
+++ b/rtemsbsd/rtems/rtems-kernel-bus-dma.c
@@ -48,6 +48,8 @@
#include <machine/rtems-bsd-kernel-space.h>
#include <machine/rtems-bsd-cache.h>
#include <machine/rtems-bsd-bus-dma.h>
+#include <bsp.h>
+#include <bsp/linker-symbols.h>
#include <rtems/malloc.h>
@@ -396,6 +398,11 @@ bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map,
bus_dmasync_op_t op)
uintptr_t size = map->buffer_size;
uintptr_t begin = (uintptr_t) map->buffer_begin;
uintptr_t end = begin + size;
+#if defined(LIBBSP_ARM_IMX_BSP_H)
+ if (begin >= bsp_section_nocache_begin && end <=
bsp_section_nocachenoload_end) {
+ return;
+ }
+#endif
if ((op & BUS_DMASYNC_PREWRITE) != 0 && (op & BUS_DMASYNC_PREREAD) ==
0) {
rtems_cache_flush_multiple_data_lines((void *) begin, size);
--
2.16.4
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