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[Qemu-devel] [PATCH v1 09/12] target-arm: powerctl: Enable HVC when star
From: |
Edgar E. Iglesias |
Subject: |
[Qemu-devel] [PATCH v1 09/12] target-arm: powerctl: Enable HVC when starting CPUs to EL2 |
Date: |
Wed, 3 Oct 2018 22:07:43 +0700 |
From: "Edgar E. Iglesias" <address@hidden>
When QEMU provides the equivalent of the EL3 firmware, we
need to enable HVCs in scr_el3 when turning on CPUs that
target EL2.
Signed-off-by: Edgar E. Iglesias <address@hidden>
---
target/arm/arm-powerctl.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/target/arm/arm-powerctl.c b/target/arm/arm-powerctl.c
index ce55eeb..54f2974 100644
--- a/target/arm/arm-powerctl.c
+++ b/target/arm/arm-powerctl.c
@@ -63,6 +63,7 @@ static void arm_set_cpu_on_async_work(CPUState
*target_cpu_state,
struct CpuOnInfo *info = (struct CpuOnInfo *) data.host_ptr;
/* Initialize the cpu we are turning on */
+ qemu_log("CPU%d reset\n", target_cpu_state->cpu_index);
cpu_reset(target_cpu_state);
target_cpu_state->halted = 0;
@@ -103,6 +104,16 @@ static void arm_set_cpu_on_async_work(CPUState
*target_cpu_state,
} else {
/* Processor is not in secure mode */
target_cpu->env.cp15.scr_el3 |= SCR_NS;
+
+ /*
+ * If QEMU is providing the equivalent of EL3 firmware, then we need
+ * to make sure a CPU targeting EL2 comes out of reset with a
+ * functional HVC insn.
+ */
+ if (arm_feature(&target_cpu->env, ARM_FEATURE_EL3)
+ && info->target_el == 2) {
+ target_cpu->env.cp15.scr_el3 |= SCR_HCE;
+ }
}
/* We check if the started CPU is now at the correct level */
--
2.7.4
- Re: [Qemu-devel] [PATCH v1 06/12] net: cadence_gem: Add support for selecting the DMA MemoryRegion, (continued)
- [Qemu-devel] [PATCH v1 07/12] net: cadence_gem: Implement support for 64bit descriptor addresses, Edgar E. Iglesias, 2018/10/03
- [Qemu-devel] [PATCH v1 08/12] net: cadence_gem: Announce 64bit addressing support, Edgar E. Iglesias, 2018/10/03
- [Qemu-devel] [PATCH v1 09/12] target-arm: powerctl: Enable HVC when starting CPUs to EL2,
Edgar E. Iglesias <=
- [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Edgar E. Iglesias, 2018/10/03
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Peter Maydell, 2018/10/08
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Edgar E. Iglesias, 2018/10/08
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Peter Maydell, 2018/10/09
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Edgar E. Iglesias, 2018/10/09
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Laurent Desnogues, 2018/10/09
- Re: [Qemu-devel] [PATCH v1 10/12] target/arm: Add the Cortex-A72, Edgar E. Iglesias, 2018/10/09
[Qemu-devel] [PATCH v1 11/12] hw/arm: versal: Add a model of Xilinx Versal SoC, Edgar E. Iglesias, 2018/10/03