Initial import

1 files changed, 29 insertions, 0 deletions

diff --git a/scripts/dtc/libfdt/libfdt_env.h b/scripts/dtc/libfdt/libfdt_env.h
new file mode 100644
index 000000000..213d7fb81
--- /dev/null
+++ b/scripts/dtc/libfdt/libfdt_env.h
@@ -0,0 +1,29 @@
+#ifndef _LIBFDT_ENV_H
+#define _LIBFDT_ENV_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#define EXTRACT_BYTE(n)	((unsigned long long)((uint8_t *)&x)[n])
+static inline uint16_t fdt16_to_cpu(uint16_t x)
+{
+	return (EXTRACT_BYTE(0) << 8) | EXTRACT_BYTE(1);
+}
+#define cpu_to_fdt16(x) fdt16_to_cpu(x)
+
+static inline uint32_t fdt32_to_cpu(uint32_t x)
+{
+	return (EXTRACT_BYTE(0) << 24) | (EXTRACT_BYTE(1) << 16) | (EXTRACT_BYTE(2) << 8) | EXTRACT_BYTE(3);
+}
+#define cpu_to_fdt32(x) fdt32_to_cpu(x)
+
+static inline uint64_t fdt64_to_cpu(uint64_t x)
+{
+	return (EXTRACT_BYTE(0) << 56) | (EXTRACT_BYTE(1) << 48) | (EXTRACT_BYTE(2) << 40) | (EXTRACT_BYTE(3) << 32)
+		| (EXTRACT_BYTE(4) << 24) | (EXTRACT_BYTE(5) << 16) | (EXTRACT_BYTE(6) << 8) | EXTRACT_BYTE(7);
+}
+#define cpu_to_fdt64(x) fdt64_to_cpu(x)
+#undef EXTRACT_BYTE
+
+#endif /* _LIBFDT_ENV_H */