[Qemu-devel] [RFC PATCH 04/21] target-arm: preserve RAO/WI bits of ARMv7 SCTLR

[Sergey Fedorov]

From: Svetlana Fedoseeva <address@hidden>

Signed-off-by: Svetlana Fedoseeva <address@hidden>
Signed-off-by: Sergey Fedorov <address@hidden>
---
 target-arm/helper.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 6642e53..d7922ad 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1507,6 +1507,10 @@ static const ARMCPRegInfo lpae_cp_reginfo[] = {
 
 static int sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t 
value)
 {
+    if (arm_feature(env, ARM_FEATURE_V7)) {
+        value = value | 0x00c50078; /* This bits are RAO/WI */
+    }
+
     env->cp15.c1_sys = value;
     /* ??? Lots of these bits are not implemented.  */
     /* This may enable/disable the MMU, so do a TLB flush.  */
-- 
1.7.9.5