diff --git a/libc/kernel/uapi/linux/wmi.h b/libc/kernel/uapi/linux/wmi.h
new file mode 100644
index 0000000..26f54d9
--- /dev/null
+++ b/libc/kernel/uapi/linux/wmi.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_WMI_H
+#define _UAPI_LINUX_WMI_H
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#define WMI_IOC 'W'
+struct wmi_ioctl_buffer {
+  __u64 length;
+  __u8 data[];
+};
+struct calling_interface_buffer {
+  __u16 cmd_class;
+  __u16 cmd_select;
+  volatile __u32 input[4];
+  volatile __u32 output[4];
+} __packed;
+struct dell_wmi_extensions {
+  __u32 argattrib;
+  __u32 blength;
+  __u8 data[];
+} __packed;
+struct dell_wmi_smbios_buffer {
+  __u64 length;
+  struct calling_interface_buffer std;
+  struct dell_wmi_extensions ext;
+} __packed;
+#define CLASS_TOKEN_READ 0
+#define CLASS_TOKEN_WRITE 1
+#define SELECT_TOKEN_STD 0
+#define SELECT_TOKEN_BAT 1
+#define SELECT_TOKEN_AC 2
+#define CLASS_FLASH_INTERFACE 7
+#define SELECT_FLASH_INTERFACE 3
+#define CLASS_ADMIN_PROP 10
+#define SELECT_ADMIN_PROP 3
+#define CLASS_INFO 17
+#define SELECT_RFKILL 11
+#define SELECT_APP_REGISTRATION 3
+#define SELECT_DOCK 22
+#define CAPSULE_EN_TOKEN 0x0461
+#define CAPSULE_DIS_TOKEN 0x0462
+#define WSMT_EN_TOKEN 0x04EC
+#define WSMT_DIS_TOKEN 0x04ED
+#define DELL_WMI_SMBIOS_CMD _IOWR(WMI_IOC, 0, struct dell_wmi_smbios_buffer)
+#endif