Advanced USB delay handling

USB boot delay is now handled with the usbdelay kernel param (default=0)

We use the built in delay of usb-storage to control this. by setting the
module's delay param. If your USB device doesn't work on first boot, try
setting usbdelay=10 or so

Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>

archiso/Makefile

@@ -7,7 +7,9 @@ install: all
 	install -D -m 755 testiso $(DESTDIR)/usr/bin/testiso
 	# hooks/install are needed by mkinitcpio
 	install -D -m 644 hooks/archiso $(DESTDIR)/lib/initcpio/hooks/archiso
+	install -D -m 644 hooks/archiso-early $(DESTDIR)/lib/initcpio/hooks/archiso-early
 	install -D -m 644 install/archiso $(DESTDIR)/lib/initcpio/install/archiso
+	install -D -m 644 install/archiso-early $(DESTDIR)/lib/initcpio/install/archiso-early
 
 uninstall:
 	rm -f $(DESTDIR)/usr/sbin/mkarchiso

archiso/hooks/archiso

@@ -54,13 +54,11 @@ run_hook ()
     msg "done."
 
     # external drives may need to settle
-    msg ":: Waiting for usb devices to settle..."
+    msg ":: Waiting for devices to settle..."
     /sbin/udevadm trigger --subsystem-match=usb
     /sbin/udevadm settle
-    if [ "${rootdelay}" != "0" ]; then
-        /bin/sleep "${rootdelay}"
-        export rootdelay=0
-    fi
+    msg ":: Waiting ${usbdelay:-0}s for USB devices"
+    /bin/sleep "${usbdelay:-0}"
 
     msg ":: Scanning for boot device..."
 

archiso/hooks/archiso-early

@@ -0,0 +1,8 @@
+# vim: set ft=sh:
+run_hook ()
+{
+    # Set our usbdelay time. Default: 0
+    /bin/mkdir -p /etc/modprobe.d/
+    echo "options usb-storage delay_use=${usbdelay:-0}" >/
+        /etc/modprobe.d/usb-delay
+}

archiso/install/archiso-early

@@ -0,0 +1,9 @@
+install ()
+{
+    MODULES=""
+    BINARIES=""
+    FILES=""
+    SCRIPT="archiso-early"
+}
+
+# vim:ft=sh:ts=4:sw=4:et: