diff options
Diffstat (limited to 'hw/arm/armv7m.c')
| -rw-r--r-- | hw/arm/armv7m.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c index 50a9507c0b..bf173b10b8 100644 --- a/hw/arm/armv7m.c +++ b/hw/arm/armv7m.c @@ -335,6 +335,25 @@ static void armv7m_realize(DeviceState *dev, Error **errp) } /* + * Real M-profile hardware can be configured with a different number of + * MPU regions for Secure vs NonSecure. QEMU's CPU implementation doesn't + * support that yet, so catch attempts to select that. + */ + if (arm_feature(&s->cpu->env, ARM_FEATURE_M_SECURITY) && + s->mpu_ns_regions != s->mpu_s_regions) { + error_setg(errp, + "mpu-ns-regions and mpu-s-regions properties must have the same value"); + return; + } + if (s->mpu_ns_regions != UINT_MAX && + object_property_find(OBJECT(s->cpu), "pmsav7-dregion")) { + if (!object_property_set_uint(OBJECT(s->cpu), "pmsav7-dregion", + s->mpu_ns_regions, errp)) { + return; + } + } + + /* * Tell the CPU where the NVIC is; it will fail realize if it doesn't * have one. Similarly, tell the NVIC where its CPU is. */ @@ -530,6 +549,8 @@ static Property armv7m_properties[] = { false), DEFINE_PROP_BOOL("vfp", ARMv7MState, vfp, true), DEFINE_PROP_BOOL("dsp", ARMv7MState, dsp, true), + DEFINE_PROP_UINT32("mpu-ns-regions", ARMv7MState, mpu_ns_regions, UINT_MAX), + DEFINE_PROP_UINT32("mpu-s-regions", ARMv7MState, mpu_s_regions, UINT_MAX), DEFINE_PROP_END_OF_LIST(), }; |