[U-Boot] [PATCH] powerpc mpc85xx: Do not protect TLB entry for debuggging in AS1 against invalidation
Joye Laurent
Laurent.Joye at haslerrail.com
Fri Sep 7 14:50:48 CEST 2012
In case of booting from RAM (CONFIG_SYS_RAMBOOT), a TLB entry is created
for IVPR + IVOR15 to map on valid OP code address.
This TLB entry shall not be protected against invalidation, because
a new TLB entry to access RAM in AS0 will be created by
cpu_init_early_f.
If this TLB entry is protected against invalidation, this will creates
2 TLB for the same address range (forbidden).
Signed-off-by: Laurent Joye <laurent.joye at haslerrail.com>
---
arch/powerpc/cpu/mpc85xx/start.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/start.S
b/arch/powerpc/cpu/mpc85xx/start.S
index 6aabc30..56c4ee7 100644
--- a/arch/powerpc/cpu/mpc85xx/start.S
+++ b/arch/powerpc/cpu/mpc85xx/start.S
@@ -229,8 +229,8 @@ l2_disabled:
* TLB entry is created for IVPR + IVOR15 to map on valid OP code
address
* because "nexti" will resize TLB to 4K
*/
- lis r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256K)@h
- ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256K)@l
+ lis r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_256K)@h
+ ori r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_256K)@l
lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I))@h
ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE,
--
1.7.10.4
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