Added description for a basic ACPI table, taken from

include/linux/acpi.h.

diff --git a/src/include/gpxe/acpi.h b/src/include/gpxe/acpi.h
new file mode 100644 (file)
index 0000000..0c4f484
--- /dev/null
+++ b/src/include/gpxe/acpi.h
@@ -0,0 +1,39 @@
+#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 */