diff --git a/src/arch/i386/include/arch/byteorder.h b/src/arch/i386/include/arch/byteorder.h
new file mode 100644
index 0000000000..eecd02cf2b
--- /dev/null
+++ b/src/arch/i386/include/arch/byteorder.h
@@ -0,0 +1,17 @@
+#ifndef _BYTEORDER_H
+#define _BYTEORDER_H
+
+#define __LITTLE_ENDIAN 1234
+
+#include <swab.h>
+
+#define cpu_to_le32(x) ((unsigned int)(x))
+#define le32_to_cpu(x) ((unsigned int)(x))
+#define cpu_to_le16(x) ((unsigned short)(x))
+#define le16_to_cpu(x) ((unsigned short)(x))
+#define cpu_to_be32(x) swab32((x))
+#define be32_to_cpu(x) swab32((x))
+#define cpu_to_be16(x) swab16((x))
+#define be16_to_cpu(x) swab16((x))
+
+#endif /* _BYTEORDER_H */
diff --git a/src/arch/ppc/include/arch/byteorder.h b/src/arch/ppc/include/arch/byteorder.h
new file mode 100644
index 0000000000..44fb09cca1
--- /dev/null
+++ b/src/arch/ppc/include/arch/byteorder.h
@@ -0,0 +1,17 @@
+#ifndef _BYTEORDER_H
+#define _BYTEORDER_H
+
+#define __BIG_ENDIAN 4321
+
+#include <swab.h>
+
+#define cpu_to_le32(x) swab32((x))
+#define le32_to_cpu(x) swab32((x))
+#define cpu_to_le16(x) swab16((x))
+#define le16_to_cpu(x) swab16((x))
+#define cpu_to_be32(x) ((unsigned int)(x))
+#define be32_to_cpu(x) ((unsigned int)(x))
+#define cpu_to_be16(x) ((unsigned short)(x))
+#define be16_to_cpu(x) ((unsigned short)(x))
+
+#endif /* _BYTEORDER_H */