--- /dev/null
+#ifndef _GPXE_ACPI_H
+#define _GPXE_ACPI_H
+
+/** @file
+ *
+ * ACPI data structures
+ *
+ */
+
+#include <stdint.h>
+
+/**
+ * An ACPI description header
+ *
+ * This is the structure common to the start of all ACPI system
+ * description tables.
+ */
+struct acpi_description_header {
+ /** ACPI signature (4 ASCII characters) */
+ char signature[4];
+ /** Length of table, in bytes, including header */
+ uint32_t length;
+ /** ACPI Specification minor version number */
+ uint8_t revision;
+ /** To make sum of entire table == 0 */
+ uint8_t checksum;
+ /** OEM identification */
+ char oem_id[6];
+ /** OEM table identification */
+ char oem_table_id[8];
+ /** OEM revision number */
+ uint32_t oem_revision;
+ /** ASL compiler vendor ID */
+ char asl_compiler_id[4];
+ /** ASL compiler revision number */
+ uint32_t asl_compiler_revision;
+};
+
+#endif /* _GPXE_ACPI_H */