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| author | Bernhard Beschow <shentey@gmail.com> | 2023-10-07 14:38:29 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-10-22 05:18:17 -0400 |
| commit | ac4330359bee7a8cf3dab7f8639190dd17f1f4d1 (patch) | |
| tree | ab12cff52db90201e5e5fe9ad481021b0d3f612f | |
| parent | 2d7630f5c7dbe5ec1fc42082d135eb6e5f159ebd (diff) | |
| download | qemu-ac4330359bee7a8cf3dab7f8639190dd17f1f4d1.zip qemu-ac4330359bee7a8cf3dab7f8639190dd17f1f4d1.tar.gz qemu-ac4330359bee7a8cf3dab7f8639190dd17f1f4d1.tar.bz2 | |
hw/isa/piix: Allow for optional PIT creation in PIIX3
In the PC machine, the PIT is created in board code to allow it to be
virtualized with various virtualization techniques. So explicitly disable its
creation in the PC machine via a property which defaults to enabled. Once the
PIIX implementations are consolidated this default will keep Malta working
without further ado.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20231007123843.127151-22-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/pc_piix.c | 2 | ||||
| -rw-r--r-- | hw/isa/piix.c | 6 | ||||
| -rw-r--r-- | include/hw/southbridge/piix.h | 1 |
3 files changed, 9 insertions, 0 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index fa39afd..e38942a 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -270,6 +270,8 @@ static void pc_init1(MachineState *machine, &error_abort); object_property_set_bool(OBJECT(pci_dev), "has-pic", false, &error_abort); + object_property_set_bool(OBJECT(pci_dev), "has-pit", false, + &error_abort); qdev_prop_set_uint32(DEVICE(pci_dev), "smb_io_base", 0xb100); object_property_set_bool(OBJECT(pci_dev), "smm-enabled", x86_machine_is_smm_enabled(x86ms), diff --git a/hw/isa/piix.c b/hw/isa/piix.c index d6d9ac6..270b8eb 100644 --- a/hw/isa/piix.c +++ b/hw/isa/piix.c @@ -361,6 +361,11 @@ static void pci_piix3_realize(PCIDevice *dev, Error **errp) isa_bus_register_input_irqs(isa_bus, d->isa_irqs_in); + /* PIT */ + if (d->has_pit) { + i8254_pit_init(isa_bus, 0x40, 0, NULL); + } + i8257_dma_init(isa_bus, 0); /* RTC */ @@ -436,6 +441,7 @@ static Property pci_piix3_props[] = { DEFINE_PROP_UINT32("smb_io_base", PIIXState, smb_io_base, 0), DEFINE_PROP_BOOL("has-acpi", PIIXState, has_acpi, true), DEFINE_PROP_BOOL("has-pic", PIIXState, has_pic, true), + DEFINE_PROP_BOOL("has-pit", PIIXState, has_pit, true), DEFINE_PROP_BOOL("has-usb", PIIXState, has_usb, true), DEFINE_PROP_BOOL("smm-enabled", PIIXState, smm_enabled, false), DEFINE_PROP_END_OF_LIST(), diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h index 0849169..86709ba 100644 --- a/include/hw/southbridge/piix.h +++ b/include/hw/southbridge/piix.h @@ -70,6 +70,7 @@ struct PIIXState { bool has_acpi; bool has_pic; + bool has_pit; bool has_usb; bool smm_enabled; }; |