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target-arm: Add vexpress machine secure property

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Add "secure" Vexpress machine specific property to allow override of the
default secure state configuration.  By default, when using the QEMU
-kernel command line argument, Vexpress machines boot into NS/SVC.  When using
the QEMU -bios command line argument, Vexpress machines boot into S/SVC.

The secure state can be changed from the default specifying the secure
state as a machine property.  For example, the below command line would disable
security extensions on a -kernel Linux boot:

    aarch64-softmmu/qemu-system-aarch64
        -machine type=vexpress-a15,secure=off
        -kernel ...

Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1418684992-8996-5-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Greg Bellows 2014-12-15 17:09:41 -06:00 committed by Peter Maydell
parent af7c9f34b1
commit 4902192432
1 changed files with 30 additions and 0 deletions
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30
hw/arm/vexpress.c
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@ -164,6 +164,7 @@ typedef struct {
typedef struct {
MachineState parent;
bool secure;
} VexpressMachineState;
#define TYPE_VEXPRESS_MACHINE "vexpress"
@ -701,6 +702,34 @@ static void vexpress_common_init(MachineState *machine)
arm_load_kernel(ARM_CPU(first_cpu), &daughterboard->bootinfo);
}
static bool vexpress_get_secure(Object *obj, Error **errp)
{
VexpressMachineState *vms = VEXPRESS_MACHINE(obj);
return vms->secure;
}
static void vexpress_set_secure(Object *obj, bool value, Error **errp)
{
VexpressMachineState *vms = VEXPRESS_MACHINE(obj);
vms->secure = value;
}
static void vexpress_instance_init(Object *obj)
{
VexpressMachineState *vms = VEXPRESS_MACHINE(obj);
/* EL3 is enabled by default on vexpress */
vms->secure = true;
object_property_add_bool(obj, "secure", vexpress_get_secure,
vexpress_set_secure, NULL);
object_property_set_description(obj, "secure",
"Set on/off to enable/disable the ARM "
"Security Extensions (TrustZone)",
NULL);
}
static void vexpress_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@ -739,6 +768,7 @@ static const TypeInfo vexpress_info = {
.parent = TYPE_MACHINE,
.abstract = true,
.instance_size = sizeof(VexpressMachineState),
.instance_init = vexpress_instance_init,
.class_size = sizeof(VexpressMachineClass),
.class_init = vexpress_class_init,
};