diff options
Diffstat (limited to 'hw/intc/armv7m_nvic.c')
| -rw-r--r-- | hw/intc/armv7m_nvic.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index 3c4b6e6d70..277a98b87b 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -19,6 +19,7 @@ #include "hw/intc/armv7m_nvic.h" #include "hw/irq.h" #include "hw/qdev-properties.h" +#include "sysemu/runstate.h" #include "target/arm/cpu.h" #include "exec/exec-all.h" #include "exec/memop.h" @@ -64,6 +65,20 @@ static const uint8_t nvic_id[] = { 0x00, 0xb0, 0x1b, 0x00, 0x0d, 0xe0, 0x05, 0xb1 }; +static void signal_sysresetreq(NVICState *s) +{ + if (qemu_irq_is_connected(s->sysresetreq)) { + qemu_irq_pulse(s->sysresetreq); + } else { + /* + * Default behaviour if the SoC doesn't need to wire up + * SYSRESETREQ (eg to a system reset controller of some kind): + * perform a system reset via the usual QEMU API. + */ + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); + } +} + static int nvic_pending_prio(NVICState *s) { /* return the group priority of the current pending interrupt, @@ -1524,7 +1539,7 @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, if (value & R_V7M_AIRCR_SYSRESETREQ_MASK) { if (attrs.secure || !(cpu->env.v7m.aircr & R_V7M_AIRCR_SYSRESETREQS_MASK)) { - qemu_irq_pulse(s->sysresetreq); + signal_sysresetreq(s); } } if (value & R_V7M_AIRCR_VECTCLRACTIVE_MASK) { |