1 files changed, 55 insertions, 0 deletions
diff --git a/lib/libfdt/fdt_addresses.c b/lib/libfdt/fdt_addresses.c
new file mode 100644
index 0000000000..76054d98e5
--- /dev/null
+++ b/lib/libfdt/fdt_addresses.c
@@ -0,0 +1,55 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
+ * SPDX-License-Identifier:	GPL-2.0+ BSD-2-Clause
+ */
+#include "libfdt_env.h"
+
+#ifndef USE_HOSTCC
+#include <fdt.h>
+#include <libfdt.h>
+#else
+#include "fdt_host.h"
+#endif
+
+#include "libfdt_internal.h"
+
+int fdt_address_cells(const void *fdt, int nodeoffset)
+{
+	const fdt32_t *ac;
+	int val;
+	int len;
+
+	ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
+	if (!ac)
+		return 2;
+
+	if (len != sizeof(*ac))
+		return -FDT_ERR_BADNCELLS;
+
+	val = fdt32_to_cpu(*ac);
+	if ((val <= 0) || (val > FDT_MAX_NCELLS))
+		return -FDT_ERR_BADNCELLS;
+
+	return val;
+}
+
+int fdt_size_cells(const void *fdt, int nodeoffset)
+{
+	const fdt32_t *sc;
+	int val;
+	int len;
+
+	sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
+	if (!sc)
+		return 2;
+
+	if (len != sizeof(*sc))
+		return -FDT_ERR_BADNCELLS;
+
+	val = fdt32_to_cpu(*sc);
+	if ((val < 0) || (val > FDT_MAX_NCELLS))
+		return -FDT_ERR_BADNCELLS;
+
+	return val;
+}