[legal] Add a selection of FILE_LICENCE declarations

Add FILE_LICENCE declarations to almost all files that make up the
various standard builds of gPXE.

src/arch/i386/interface/pcbios/abft.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <realmode.h>
 #include <gpxe/aoe.h>
 #include <gpxe/netdevice.h>

src/arch/i386/interface/pcbios/aoeboot.c

@@ -10,6 +10,8 @@
 #include <gpxe/abft.h>
 #include <int13.h>
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 static int aoeboot ( const char *root_path ) {
 	struct ata_device ata;
 	struct int13_drive drive;

src/arch/i386/interface/pcbios/bios_nap.c

@@ -1,6 +1,8 @@
 #include <gpxe/nap.h>
 #include <realmode.h>
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 /**
  * Save power by halting the CPU until the next interrupt
  *

src/arch/i386/interface/pcbios/bios_smbios.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <string.h>
 #include <errno.h>

src/arch/i386/interface/pcbios/bios_timer.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 /** @file
  *
  * BIOS timer

src/arch/i386/interface/pcbios/biosint.c

@@ -7,6 +7,8 @@
  *
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 /**
  * Hook INT vector
  *

src/arch/i386/interface/pcbios/ibft.c

@@ -25,6 +25,8 @@
  *
  */
 
+FILE_LICENCE ( BSD2 );
+
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

src/arch/i386/interface/pcbios/int13.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <limits.h>
 #include <byteswap.h>

src/arch/i386/interface/pcbios/iscsiboot.c

@@ -13,6 +13,8 @@
 #include <int13.h>
 #include <usr/autoboot.h>
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 struct setting keep_san_setting __setting = {
 	.name = "keep-san",
 	.description = "Preserve SAN connection",

src/arch/i386/interface/pcbios/memtop_umalloc.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 /**
  * @file
  *

src/arch/i386/interface/pcbios/pcibios.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <gpxe/pci.h>
 #include <realmode.h>

src/arch/i386/interface/pxe/pxe_call.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <gpxe/uaccess.h>
 #include <registers.h>
 #include <biosint.h>

src/arch/i386/interface/pxe/pxe_entry.S

@@ -17,6 +17,8 @@
  *
  */
 
+FILE_LICENCE ( GPL2_OR_LATER )
+
 	.arch i386
 
 /****************************************************************************

src/arch/i386/interface/pxe/pxe_file.c

@@ -31,6 +31,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 FEATURE ( FEATURE_MISC, "PXEXT", DHCP_EB_FEATURE_PXE_EXT, 2 );
 
 /**

src/arch/i386/interface/pxe/pxe_loader.c

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <gpxe/init.h>
 #include "pxe.h"
 #include "pxe_call.h"

src/arch/i386/interface/pxe/pxe_preboot.c

@@ -23,6 +23,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <string.h>
 #include <stdlib.h>

src/arch/i386/interface/pxe/pxe_tftp.c

@@ -22,6 +22,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>

src/arch/i386/interface/pxe/pxe_udp.c

@@ -30,6 +30,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 /** A PXE UDP connection */
 struct pxe_udp_connection {
 	/** Data transfer interface to UDP stack */

src/arch/i386/interface/pxe/pxe_undi.c

@@ -22,6 +22,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

src/arch/i386/interface/syslinux/com32_call.c

@@ -21,6 +21,8 @@
  *
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <stdint.h>
 #include <realmode.h>
 #include <comboot.h>

src/arch/i386/interface/syslinux/com32_wrapper.S

@@ -16,6 +16,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+FILE_LICENCE ( GPL2_OR_LATER )
+
 	.text
 	.arch i386
 	.code32

src/arch/i386/interface/syslinux/comboot_call.c

@@ -21,6 +21,8 @@
  *
  */
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 #include <errno.h>
 #include <realmode.h>
 #include <biosint.h>

src/arch/i386/interface/syslinux/comboot_resolv.c

@@ -5,6 +5,8 @@
 #include <gpxe/process.h>
 #include <gpxe/resolv.h>
 
+FILE_LICENCE ( GPL2_OR_LATER );
+
 static int comboot_resolv_rc;
 static struct in_addr comboot_resolv_addr;