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authorGreg Bellows <greg.bellows@linaro.org>2014-12-15 17:09:51 -0600
committerPeter Maydell <peter.maydell@linaro.org>2014-12-22 23:12:28 +0000
commit61e2f3521c9ee2dc3ebab2e84329d5ebd10d8518 (patch)
tree3e354355e481622dd87076aab0435dd6ce9c59c3 /hw/arm/xilinx_zynq.c
parent223a72f1179dc0b56bae3b01bc3e3208ef100fcc (diff)
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target-arm: Disable EL3 on unsupported machines
Disables the CPU ARM_FEATURE_EL3 featuere on machine models that can be configured to use Cortex-A9, Cortex-A15, and ARM1176 but don't officially support EL3. This preserves backwards compatibility. Signed-off-by: Greg Bellows <greg.bellows@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1418684992-8996-15-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/xilinx_zynq.c')
-rw-r--r--hw/arm/xilinx_zynq.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
index b590392..06e6e24 100644
--- a/hw/arm/xilinx_zynq.c
+++ b/hw/arm/xilinx_zynq.c
@@ -126,6 +126,18 @@ static void zynq_init(MachineState *machine)
cpu = ARM_CPU(object_new(object_class_get_name(cpu_oc)));
+ /* By default A9 CPUs have EL3 enabled. This board does not
+ * currently support EL3 so the CPU EL3 property is disabled before
+ * realization.
+ */
+ if (object_property_find(OBJECT(cpu), "has_el3", NULL)) {
+ object_property_set_bool(OBJECT(cpu), false, "has_el3", &err);
+ if (err) {
+ error_report("%s", error_get_pretty(err));
+ exit(1);
+ }
+ }
+
object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr", &err);
if (err) {
error_report("%s", error_get_pretty(err));