target-arm: Make Cortex-A15 CBAR read-only

The Cortex-A15's CBAR register is actually read-only (unlike that
of the Cortex-A9). Correct our model to match the hardware.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>

diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index f9f61870b0960c10e3cea748aa1d3808289d8a08..c0ddc3e3dfda3c5dfc1fed7e85a8d4adf0785296 100644 (file)
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -744,7 +744,7 @@ static void cortex_a15_initfn(Object *obj)
     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
-    set_feature(&cpu->env, ARM_FEATURE_CBAR);
+    set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
     set_feature(&cpu->env, ARM_FEATURE_LPAE);
     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
     cpu->midr = 0x412fc0f1;