sh: Add a machvec callback for early memblock reservations.

This adds in a callback to the machvec to allow platforms to do early
reservations through memblock.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 9 insertions, 2 deletions

diff --git a/arch/sh/include/asm/machvec.h b/arch/sh/include/asm/machvec.h
index dd5d6e5bf204..57c5c3d0f39f 100644
--- a/arch/sh/include/asm/machvec.h
+++ b/arch/sh/include/asm/machvec.h
@@ -31,6 +31,7 @@ struct sh_machine_vector {
         int (*mv_mode_pins)(void);
 
         void (*mv_mem_init)(void);
+        void (*mv_mem_reserve)(void);
 };
 
 extern struct sh_machine_vector sh_mv;
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 3385b28acaac..0d3f912e3334 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -2,7 +2,7 @@
  * linux/arch/sh/mm/init.c
  *
  *  Copyright (C) 1999  Niibe Yutaka
- *  Copyright (C) 2002 - 2010  Paul Mundt
+ *  Copyright (C) 2002 - 2011  Paul Mundt
  *
  *  Based on linux/arch/i386/mm/init.c:
  *   Copyright (C) 1995  Linus Torvalds
@@ -325,11 +325,17 @@ void __init paging_init(void)
         int nid;
 
         memblock_init();
-
         sh_mv.mv_mem_init();
 
         early_reserve_mem();
 
+        /*
+         * Once the early reservations are out of the way, give the
+         * platforms a chance to kick out some memory.
+         */
+        if (sh_mv.mv_mem_reserve)
+                sh_mv.mv_mem_reserve();
+
         memblock_enforce_memory_limit(memory_limit);
         memblock_analyze();