diff options
| -rw-r--r-- | hw/arm/armv7m.c | 21 | ||||
| -rw-r--r-- | include/hw/arm/armv7m.h | 8 |
2 files changed, 29 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(), }; diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h index b7ba0ff409..e2cebbd15c 100644 --- a/include/hw/arm/armv7m.h +++ b/include/hw/arm/armv7m.h @@ -52,6 +52,12 @@ OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M) * + Property "vfp": enable VFP (forwarded to CPU object) * + Property "dsp": enable DSP (forwarded to CPU object) * + Property "enable-bitband": expose bitbanded IO + * + Property "mpu-ns-regions": number of Non-Secure MPU regions (forwarded + * to CPU object pmsav7-dregion property; default is whatever the default + * for the CPU is) + * + Property "mpu-s-regions": number of Secure MPU regions (default is + * whatever the default for the CPU is; must currently be set to the same + * value as mpu-ns-regions if the CPU implements the Security Extension) * + Clock input "refclk" is the external reference clock for the systick timers * + Clock input "cpuclk" is the main CPU clock */ @@ -95,6 +101,8 @@ struct ARMv7MState { Object *idau; uint32_t init_svtor; uint32_t init_nsvtor; + uint32_t mpu_ns_regions; + uint32_t mpu_s_regions; bool enable_bitband; bool start_powered_off; bool vfp; |