diff options
| author | Fabian Aggeler <aggelerf@ethz.ch> | 2015-05-12 11:57:16 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-05-12 11:57:16 +0100 |
| commit | 5543d1abb6e218a9d3b8887b777fd3947c86c4cf (patch) | |
| tree | 27e2a245473d44d9ddba5f2e3dee835e6f363e2d /hw | |
| parent | 44f552964714a41ccd41b5e8ac4cbd2478249db1 (diff) | |
hw/intc/arm_gic: Add Security Extensions property
Add a QOM property which allows the GIC Security Extensions to be
enabled. These are an optional part of the GICv1 and GICv2 architecture.
This commit just adds the property and some sanity checks that it
is only enabled on GIC revisions that support it.
Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch>
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1430502643-25909-3-git-send-email-peter.maydell@linaro.org
Message-id: 1429113742-8371-5-git-send-email-greg.bellows@linaro.org
[PMM: changed property name, added checks that it isn't set for
older GIC revisions or if using the KVM VGIC; reworded commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/intc/arm_gic.c | 5 | ||||
| -rw-r--r-- | hw/intc/arm_gic_common.c | 9 | ||||
| -rw-r--r-- | hw/intc/arm_gic_kvm.c | 6 |
3 files changed, 19 insertions, 1 deletions
diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c index e9fb8b9400..cdf7408774 100644 --- a/hw/intc/arm_gic.c +++ b/hw/intc/arm_gic.c @@ -298,7 +298,10 @@ static uint32_t gic_dist_readb(void *opaque, hwaddr offset) if (offset == 0) return s->enabled; if (offset == 4) - return ((s->num_irq / 32) - 1) | ((NUM_CPU(s) - 1) << 5); + /* Interrupt Controller Type Register */ + return ((s->num_irq / 32) - 1) + | ((NUM_CPU(s) - 1) << 5) + | (s->security_extn << 10); if (offset < 0x08) return 0; if (offset >= 0x80) { diff --git a/hw/intc/arm_gic_common.c b/hw/intc/arm_gic_common.c index 18b01ba0c7..5ed21f1b46 100644 --- a/hw/intc/arm_gic_common.c +++ b/hw/intc/arm_gic_common.c @@ -110,6 +110,13 @@ static void arm_gic_common_realize(DeviceState *dev, Error **errp) num_irq); return; } + + if (s->security_extn && + (s->revision == REV_11MPCORE || s->revision == REV_NVIC)) { + error_setg(errp, "this GIC revision does not implement " + "the security extensions"); + return; + } } static void arm_gic_common_reset(DeviceState *dev) @@ -149,6 +156,8 @@ static Property arm_gic_common_properties[] = { * (Internally, 0xffffffff also indicates "not a GIC but an NVIC".) */ DEFINE_PROP_UINT32("revision", GICState, revision, 1), + /* True if the GIC should implement the security extensions */ + DEFINE_PROP_BOOL("has-security-extensions", GICState, security_extn, 0), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/intc/arm_gic_kvm.c b/hw/intc/arm_gic_kvm.c index 5aedae1660..cb47b12f0e 100644 --- a/hw/intc/arm_gic_kvm.c +++ b/hw/intc/arm_gic_kvm.c @@ -544,6 +544,12 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) return; } + if (s->security_extn) { + error_setg(errp, "the in-kernel VGIC does not implement the " + "security extensions"); + return; + } + i = s->num_irq - GIC_INTERNAL; /* For the GIC, also expose incoming GPIO lines for PPIs for each CPU. * GPIO array layout is thus: |