[PATCH] POWERPC 8xx: bump up initial memory limit for 8xx

[Vitaly Bordug]

From: John Traill <john.traill at freescale.com>

The 8xx can only support a max of 8M during early boot ( it seems a lot of
8xx boards only have 8M so the bug was never triggered ). The following
change makes it able to run with 128M.

Signed-off-by: Vitaly Bordug <vitb at kernel.crashing.org>

---

 arch/powerpc/mm/init_32.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index e1f5ded..7cee86d 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -133,6 +133,9 @@ void __init MMU_init(void)
 	/* 601 can only access 16MB at the moment */
 	if (PVR_VER(mfspr(SPRN_PVR)) == 1)
 		__initial_memory_limit = 0x01000000;
+	/* 852 can only access 8MB at the moment */
+	if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
+		__initial_memory_limit = 0x00800000;
 
 	/* parse args from command line */
 	MMU_setup();