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[Qemu-arm] [PATCH 2/9] armv7m: Implement reading and writing of PRIGROUP
From: |
Peter Maydell |
Subject: |
[Qemu-arm] [PATCH 2/9] armv7m: Implement reading and writing of PRIGROUP |
Date: |
Thu, 2 Feb 2017 20:02:15 +0000 |
Add a state field for the v7M PRIGROUP register and implent
reading and writing it. The current NVIC doesn't honour
the values written, but the new version will.
Signed-off-by: Peter Maydell <address@hidden>
---
hw/intc/armv7m_nvic.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index 09975f3..ce22001 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -24,6 +24,9 @@
typedef struct NVICState {
GICState gic;
ARMCPU *cpu;
+
+ uint32_t prigroup;
+
struct {
uint32_t control;
uint32_t reload;
@@ -223,7 +226,7 @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset)
case 0xd08: /* Vector Table Offset. */
return cpu->env.v7m.vecbase;
case 0xd0c: /* Application Interrupt/Reset Control. */
- return 0xfa050000;
+ return 0xfa050000 | (s->prigroup << 8);
case 0xd10: /* System Control. */
/* TODO: Implement SLEEPONEXIT. */
return 0;
@@ -362,9 +365,7 @@ static void nvic_writel(NVICState *s, uint32_t offset,
uint32_t value)
if (value & 1) {
qemu_log_mask(LOG_UNIMP, "AIRCR system reset unimplemented\n");
}
- if (value & 0x700) {
- qemu_log_mask(LOG_UNIMP, "PRIGROUP unimplemented\n");
- }
+ s->prigroup = extract32(value, 8, 3);
}
break;
case 0xd10: /* System Control. */
@@ -483,13 +484,14 @@ static const MemoryRegionOps nvic_sysreg_ops = {
static const VMStateDescription vmstate_nvic = {
.name = "armv7m_nvic",
- .version_id = 1,
- .minimum_version_id = 1,
+ .version_id = 2,
+ .minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_UINT32(systick.control, NVICState),
VMSTATE_UINT32(systick.reload, NVICState),
VMSTATE_INT64(systick.tick, NVICState),
VMSTATE_TIMER_PTR(systick.timer, NVICState),
+ VMSTATE_UINT32(prigroup, NVICState),
VMSTATE_END_OF_LIST()
}
};
--
2.7.4
- Re: [Qemu-arm] [Qemu-devel] [PATCH 9/9] armv7m: VECTCLRACTIVE and VECTRESET are UNPREDICTABLE, (continued)
- [Qemu-arm] [PATCH 8/9] armv7m: Simpler and faster exception start, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 7/9] armv7m: Remove unused armv7m_nvic_acknowledge_irq() return value, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 6/9] armv7m: Escalate exceptions to HardFault if necessary, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 4/9] armv7m: Fix condition check for taking exceptions, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 2/9] armv7m: Implement reading and writing of PRIGROUP,
Peter Maydell <=
- [Qemu-arm] [PATCH 5/9] arm: gic: Remove references to NVIC, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 1/9] armv7m: Rename nvic_state to NVICState, Peter Maydell, 2017/02/02
- [Qemu-arm] [PATCH 3/9] armv7m: Rewrite NVIC to not use any GIC code, Peter Maydell, 2017/02/02