Initial import of Leif's work

grub-core/lib/dtc/libfdt/libfdt_env.h

@@ -0,0 +1,27 @@
+#ifndef _LIBFDT_ENV_H
+#define _LIBFDT_ENV_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#define _B(n)	((unsigned long long)((uint8_t *)&x)[n])
+static inline uint32_t
+fdt32_to_cpu (uint32_t x)
+{
+  return (_B (0) << 24) | (_B (1) << 16) | (_B (2) << 8) | _B (3);
+}
+
+#define cpu_to_fdt32(x) fdt32_to_cpu(x)
+
+static inline uint64_t
+fdt64_to_cpu (uint64_t x)
+{
+  return (_B (0) << 56) | (_B (1) << 48) | (_B (2) << 40) | (_B (3) << 32)
+    | (_B (4) << 24) | (_B (5) << 16) | (_B (6) << 8) | _B (7);
+}
+
+#define cpu_to_fdt64(x) fdt64_to_cpu(x)
+#undef _B
+
+#endif /* _LIBFDT_ENV_H */