fdt: Add a function to decode a variable-sized u32 array
Sometimes an array can be of variable size up to a maximum. Add a helper
function to decode this.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 9714620..4aa227a 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -485,6 +485,26 @@
return err;
}
+int fdtdec_get_int_array_count(const void *blob, int node,
+ const char *prop_name, u32 *array, int count)
+{
+ const u32 *cell;
+ int len, elems;
+ int i;
+
+ debug("%s: %s\n", __func__, prop_name);
+ cell = fdt_getprop(blob, node, prop_name, &len);
+ if (!cell)
+ return -FDT_ERR_NOTFOUND;
+ elems = len / sizeof(u32);
+ if (count > elems)
+ count = elems;
+ for (i = 0; i < count; i++)
+ array[i] = fdt32_to_cpu(cell[i]);
+
+ return count;
+}
+
const u32 *fdtdec_locate_array(const void *blob, int node,
const char *prop_name, int count)
{
