From aed461af81012a398a205e9be67ab37667491838 Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Mon, 24 Nov 2008 10:29:25 -0600
Subject: [PATCH] 85xx: Fix relocation of CCSRBAR
If the virtual address for CCSRBAR is the same after relocation but
the physical address is changing we'd end up having two TLB entries with
the same VA. Instead we new us the new CCSRBAR virt address + 4k as a
temp virt address to access the old CCSRBAR to relocate it.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>
---
cpu/mpc85xx/cpu_init.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/cpu/mpc85xx/cpu_init.c b/cpu/mpc85xx/cpu_init.c
index 5862bd6ab0..2d86547c20 100644
--- a/cpu/mpc85xx/cpu_init.c
+++ b/cpu/mpc85xx/cpu_init.c
@@ -140,14 +140,15 @@ void cpu_init_early_f(void)
#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
{
u32 temp;
+ volatile u32 *ccsr_virt =
+ (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
- set_tlb(0, CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_DEFAULT,
+ set_tlb(0, (u32)ccsr_virt, CONFIG_SYS_CCSRBAR_DEFAULT,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
1, 1, BOOKE_PAGESZ_4K, 0);
- temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT);
- out_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_PHYS >> 12);
-
+ temp = in_be32(ccsr_virt);
+ out_be32(ccsr_virt, CONFIG_SYS_CCSRBAR_PHYS >> 12);
temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
}
#endif
--
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