abuf: Provide a constant buffer

Add a new initialiser which can accept a constant pointer.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/abuf.c b/lib/abuf.c
index 8156177c773..61adf7fc6b1 100644
--- a/lib/abuf.c
+++ b/lib/abuf.c
@@ -119,6 +119,12 @@ void abuf_init_set(struct abuf *abuf, void *data, size_t size)
 	abuf_set(abuf, data, size);
 }
 
+void abuf_init_const(struct abuf *abuf, const void *data, size_t size)
+{
+	/* for now there is no flag indicating that the abuf data is constant */
+	abuf_init_set(abuf, (void *)data, size);
+}
+
 void abuf_init_move(struct abuf *abuf, void *data, size_t size)
 {
 	abuf_init_set(abuf, data, size);