summaryrefslogtreecommitdiffstats
path: root/kernel/include/uapi/linux/nvram.h
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/include/uapi/linux/nvram.h')
-rw-r--r--kernel/include/uapi/linux/nvram.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/include/uapi/linux/nvram.h b/kernel/include/uapi/linux/nvram.h
new file mode 100644
index 000000000..0986c4337
--- /dev/null
+++ b/kernel/include/uapi/linux/nvram.h
@@ -0,0 +1,16 @@
+#ifndef _UAPI_LINUX_NVRAM_H
+#define _UAPI_LINUX_NVRAM_H
+
+#include <linux/ioctl.h>
+
+/* /dev/nvram ioctls */
+#define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */
+#define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */
+
+/* for all current systems, this is where NVRAM starts */
+#define NVRAM_FIRST_BYTE 14
+/* all these functions expect an NVRAM offset, not an absolute */
+#define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE)
+
+
+#endif /* _UAPI_LINUX_NVRAM_H */