From dc2adad85bf580d65916c940683f6e9671e8a5dd Mon Sep 17 00:00:00 2001 From: Dave Liu Date: Tue, 28 Oct 2008 17:46:12 +0800 Subject: [PATCH] 86xx: Move the clear_tlbs before MMU turn on We must invalidate TLBs before MMU turn on, but currently the code is not, if there are some stale TLB entry valid in the TLBs, it will cause strange issue. Signed-off-by: Dave Liu Acked-by: Becky Bruce --- cpu/mpc86xx/start.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S index 159f3e1..30e6047 100644 --- a/cpu/mpc86xx/start.S +++ b/cpu/mpc86xx/start.S @@ -202,8 +202,12 @@ boot_warm: mtmsr 0 #endif + /* Invalidate BATs */ bl invalidate_bats sync + /* Invalidate all of TLB before MMU turn on */ + bl clear_tlbs + sync #ifdef CONFIG_SYS_L2 /* init the L2 cache */ @@ -275,7 +279,6 @@ in_flash: /* setup the rest of the bats */ bl setup_bats - bl clear_tlbs sync #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR)