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target-arm: powerctl: Enable HVC when starting CPUs to EL2
When QEMU provides the equivalent of the EL3 firmware, we need to enable HVCs in scr_el3 when turning on CPUs that target EL2. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 20181011021931.4249-10-edgar.iglesias@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -103,6 +103,16 @@ static void arm_set_cpu_on_async_work(CPUState *target_cpu_state,
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} else {
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/* Processor is not in secure mode */
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target_cpu->env.cp15.scr_el3 |= SCR_NS;
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/*
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* If QEMU is providing the equivalent of EL3 firmware, then we need
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* to make sure a CPU targeting EL2 comes out of reset with a
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* functional HVC insn.
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*/
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if (arm_feature(&target_cpu->env, ARM_FEATURE_EL3)
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&& info->target_el == 2) {
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target_cpu->env.cp15.scr_el3 |= SCR_HCE;
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}
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}
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/* We check if the started CPU is now at the correct level */
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