Moved some functions to common/

1 files changed, 24 insertions, 0 deletions

diff --git a/common/fdt.c b/common/fdt.c
new file mode 100644
index 0000000..c554b25
--- /dev/null
+++ b/common/fdt.c
@@ -0,0 +1,24 @@
+#include <libfdt.h>
+
+struct cell_info_t get_cellinfo(void *fdt, int offset)
+{
+	return (struct cell_info_t){
+		fdt_size_cells(fdt, offset),
+		fdt_address_cells(fdt, offset)
+	};
+}
+
+/* how "reg" is interpreted depends on the parent node */
+struct cell_info_t get_reginfo(void *fdt, const char *path)
+{
+	const char *i = strrchr(path, '/');
+	if(!i)
+		return (struct cell_info_t){0, 0};
+
+	size_t baselen = i - path;
+	if(i == 0)
+		/* root node */
+		baselen = 1;
+
+	return get_cellinfo(fdt, fdt_path_offset_namelen(fdt, path, baselen));
+}