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-rw-r--r--hw/rtc/mc146818rtc.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/hw/rtc/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index fe05a44..1e9fa0f 100644
--- a/hw/rtc/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -1013,12 +1013,14 @@ static void rtc_build_aml(ISADevice *isadev, Aml *scope)
Aml *dev;
Aml *crs;
+ /*
+ * Reserving 8 io ports here, following what physical hardware
+ * does, even though qemu only responds to the first two ports.
+ */
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, RTC_ISA_BASE, RTC_ISA_BASE,
- 0x10, 0x02));
+ 0x01, 0x08));
aml_append(crs, aml_irq_no_flags(RTC_ISA_IRQ));
- aml_append(crs, aml_io(AML_DECODE16, RTC_ISA_BASE + 2, RTC_ISA_BASE + 2,
- 0x02, 0x06));
dev = aml_device("RTC");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00")));