1 files changed, 57 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/include/ipxe/nvo.h b/qemu/roms/ipxe/src/include/ipxe/nvo.h
new file mode 100644
index 000000000..1a629da78
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/nvo.h
@@ -0,0 +1,57 @@
+#ifndef _IPXE_NVO_H
+#define _IPXE_NVO_H
+
+/** @file
+ *
+ * Non-volatile stored options
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/dhcpopts.h>
+#include <ipxe/settings.h>
+
+struct nvs_device;
+struct refcnt;
+
+/**
+ * A block of non-volatile stored options
+ */
+struct nvo_block {
+	/** Settings block */
+	struct settings settings;
+	/** Underlying non-volatile storage device */
+	struct nvs_device *nvs;
+	/** Address within NVS device */
+	unsigned int address;
+	/** Length of options data */
+	size_t len;
+	/** Option-containing data */
+	void *data;
+	/**
+	 * Resize non-volatile stored option block
+	 *
+	 * @v nvo		Non-volatile options block
+	 * @v len		New size
+	 * @ret rc		Return status code
+	 */
+	int ( * resize ) ( struct nvo_block *nvo, size_t len );
+	/** DHCP options block */
+	struct dhcp_options dhcpopts;
+};
+
+/** Name of non-volatile options settings block */
+#define NVO_SETTINGS_NAME "nvo"
+
+extern int nvo_applies ( struct settings *settings,
+			 const struct setting *setting );
+extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
+		       size_t address, size_t len,
+		       int ( * resize ) ( struct nvo_block *nvo, size_t len ),
+		       struct refcnt *refcnt );
+extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
+extern void unregister_nvo ( struct nvo_block *nvo );
+
+#endif /* _IPXE_NVO_H */