We currently crash in the fedora installer because the keyboard
driver tries to access I/O space that is not there on our hardware.

This uses the same solution as powermac by just marking all
legacy i/o as invalied.

From: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Index: linux-2.6.15-rc/arch/powerpc/platforms/cell/setup.c
===================================================================
--- linux-2.6.15-rc.orig/arch/powerpc/platforms/cell/setup.c
+++ linux-2.6.15-rc/arch/powerpc/platforms/cell/setup.c
@@ -203,6 +203,15 @@ static int __init cell_probe(int platfor
 	return 1;
 }
 
+/*
+ * Cell has no legacy IO; anything calling this function has to
+ * fail or bad things will happen
+ */
+static int cell_check_legacy_ioport(unsigned int baseport)
+{
+	return -ENODEV;
+}
+
 struct machdep_calls __initdata cell_md = {
 	.probe			= cell_probe,
 	.setup_arch		= cell_setup_arch,
@@ -215,6 +224,7 @@ struct machdep_calls __initdata cell_md 
 	.get_rtc_time		= rtas_get_rtc_time,
 	.set_rtc_time		= rtas_set_rtc_time,
 	.calibrate_decr		= generic_calibrate_decr,
+	.check_legacy_ioport	= cell_check_legacy_ioport,
 	.progress		= cell_progress,
 #ifdef CONFIG_KEXEC
 	.machine_kexec		= default_machine_kexec,

--