[v3] hw/arm: Prefer arm_feature() over object_property_find()

[PATCH v3 02/14] hw/arm/armv7m: Ensure requested CPU type implements ARM_FEATURE_M

Posted by Philippe Mathieu-Daudé 10 months, 1 week ago

ARMV7M container can only accept M-profile CPU types.
Check requested type is valid once to allow further simplifications.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/arm/armv7m.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index d239468558..8900730e53 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -300,6 +300,10 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
         error_propagate(errp, err);
         return;
     }
+    if (!arm_feature(&s->cpu->env, ARM_FEATURE_M)) {
+        error_setg(errp, "armv7m: CPU must be of Cortex-M family");
+        return;
+    }
     cpudev = DEVICE(s->cpu);
 
     object_property_set_link(OBJECT(s->cpu), "memory", OBJECT(&s->container),
-- 
2.41.0

Re: [PATCH v3 02/14] hw/arm/armv7m: Ensure requested CPU type implements ARM_FEATURE_M

Posted by Peter Maydell 10 months ago

On Wed, 10 Jan 2024 at 19:53, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>
> ARMV7M container can only accept M-profile CPU types.
> Check requested type is valid once to allow further simplifications.
>
> Suggested-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  hw/arm/armv7m.c | 4 ++++
>  1 file changed, 4 insertions(+)

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM