From: Gleb Natapov <gleb@redhat.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH 1/3] Add rtc reset function.
Date: Mon, 8 Jun 2009 15:56:04 +0300 [thread overview]
Message-ID: <1244465766-6349-1-git-send-email-gleb@redhat.com> (raw)
On reset:
Periodic Interrupt Enable (PIE) bit is cleared to zero
Alarm Interrupt Enable (AIE) bit is cleared to zero
Update ended Interrupt Flag (UF) bit is cleared to zero
Interrupt Request status Flag (IRQF) bit is cleared to zero
Periodic Interrupt Flag (PF) bit is cleared to zero
Alarm Interrupt Flag (AF) bit is cleared to zero
Square Wave output Enable (SQWE) zero
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
hw/mc146818rtc.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c
index 888b85a..98a2273 100644
--- a/hw/mc146818rtc.c
+++ b/hw/mc146818rtc.c
@@ -568,6 +568,22 @@ static int rtc_load_td(QEMUFile *f, void *opaque, int version_id)
}
#endif
+static void rtc_reset(void *opaque)
+{
+ RTCState *s = opaque;
+
+ /* clear PIE,AIE,SQWE on reset */
+ s->cmos_data[RTC_REG_B] &= ~((1<<6) | (1<<5) | (1<<3));
+
+ /* clear UF,IRQF,PF,AF on reset */
+ s->cmos_data[RTC_REG_C] &= ~((1<<4) | (1<<7) | (1<<6) | (1<<5));
+
+#ifdef TARGET_I386
+ if (rtc_td_hack)
+ s->irq_coalesced = 0;
+#endif
+}
+
RTCState *rtc_init_sqw(int base, qemu_irq irq, qemu_irq sqw_irq, int base_year)
{
RTCState *s;
@@ -606,6 +622,8 @@ RTCState *rtc_init_sqw(int base, qemu_irq irq, qemu_irq sqw_irq, int base_year)
if (rtc_td_hack)
register_savevm("mc146818rtc-td", base, 1, rtc_save_td, rtc_load_td, s);
#endif
+ qemu_register_reset(rtc_reset, 0, s);
+
return s;
}
@@ -721,5 +739,6 @@ RTCState *rtc_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq,
if (rtc_td_hack)
register_savevm("mc146818rtc-td", base, 1, rtc_save_td, rtc_load_td, s);
#endif
+ qemu_register_reset(rtc_reset, 0, s);
return s;
}
--
1.6.2.1
next reply other threads:[~2009-06-08 12:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-08 12:56 Gleb Natapov [this message]
2009-06-08 12:56 ` [Qemu-devel] [PATCH 2/3] Add pci_bus_reset() function Gleb Natapov
2009-06-08 14:35 ` Avi Kivity
2009-06-08 14:37 ` Gleb Natapov
2009-06-08 14:42 ` Yaniv Kamay
2009-06-08 21:42 ` Dor Laor
2009-06-09 5:31 ` Gleb Natapov
2009-06-09 15:07 ` Blue Swirl
2009-06-09 15:24 ` Gleb Natapov
2009-06-09 15:53 ` Gleb Natapov
2009-06-09 16:07 ` Blue Swirl
2009-06-08 12:56 ` [Qemu-devel] [PATCH 3/3] Call piix3_reset() on system reset Gleb Natapov
2009-06-08 14:05 ` [Qemu-devel] Re: [PATCH 1/3] Add rtc reset function Jan Kiszka
2009-06-08 14:13 ` Gleb Natapov
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