From 1f69b6af9171f50135cce8023c84d82fbf42a8f5 Mon Sep 17 00:00:00 2001
From: Matt Fleming <matt@console-pimps.org>
Date: Tue, 6 Oct 2009 21:22:25 +0000
Subject: sh: Prepare for dynamic PMB support

To allow the MMU to be switched between 29bit and 32bit mode at runtime
some constants need to swapped for functions that return a runtime
value.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
 arch/sh/mm/init.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'arch/sh/mm/init.c')

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 8173e38afd38..c8af6c5fa586 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -323,4 +323,12 @@ int memory_add_physaddr_to_nid(u64 addr)
 }
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #endif
+
 #endif /* CONFIG_MEMORY_HOTPLUG */
+
+#ifdef CONFIG_PMB
+int __in_29bit_mode(void)
+{
+	return !(ctrl_inl(PMB_PASCR) & PASCR_SE);
+}
+#endif /* CONFIG_PMB */
-- 
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