1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/firmware/coreboot/coreboot_table.h b/drivers/firmware/coreboot/coreboot_table.h
new file mode 100644
index 000000000000..616ca3903e5c
--- /dev/null
+++ b/drivers/firmware/coreboot/coreboot_table.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * coreboot_table.h
+ *
+ * Internal header for coreboot table access.
+ *
+ * Copyright 2014 Gerd Hoffmann <kraxel@redhat.com>
+ * Copyright 2017 Google Inc.
+ * Copyright 2017 Samuel Holland <samuel@sholland.org>
+ */
+
+#ifndef __COREBOOT_TABLE_H
+#define __COREBOOT_TABLE_H
+
+#include <linux/coreboot.h>
+#include <linux/device.h>
+
+/* A device, additionally with information from coreboot. */
+struct coreboot_device {
+	struct device dev;
+	union {
+		struct coreboot_table_entry entry;
+		struct lb_cbmem_ref cbmem_ref;
+		struct lb_cbmem_entry cbmem_entry;
+		struct lb_framebuffer framebuffer;
+		DECLARE_FLEX_ARRAY(u8, raw);
+	};
+};
+
+static inline struct coreboot_device *dev_to_coreboot_device(struct device *dev)
+{
+	return container_of(dev, struct coreboot_device, dev);
+}
+
+/* A driver for handling devices described in coreboot tables. */
+struct coreboot_driver {
+	int (*probe)(struct coreboot_device *);
+	void (*remove)(struct coreboot_device *);
+	struct device_driver drv;
+	const struct coreboot_device_id *id_table;
+};
+
+/* use a macro to avoid include chaining to get THIS_MODULE */
+#define coreboot_driver_register(driver) \
+	__coreboot_driver_register(driver, THIS_MODULE)
+/* Register a driver that uses the data from a coreboot table. */
+int __coreboot_driver_register(struct coreboot_driver *driver,
+			       struct module *owner);
+
+/* Unregister a driver that uses the data from a coreboot table. */
+void coreboot_driver_unregister(struct coreboot_driver *driver);
+
+/* module_coreboot_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit.  This eliminates a lot of
+ * boilerplate.  Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_coreboot_driver(__coreboot_driver) \
+	module_driver(__coreboot_driver, coreboot_driver_register, \
+			coreboot_driver_unregister)
+
+#endif /* __COREBOOT_TABLE_H */