hw/i386: Add the possibility to use i440fx and isapc without FDC

The i440fx and the isapc machines can be used in binaries without
FDC, too. We just have to make sure that they don't try to instantiate
the FDC when it is not available.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240425184315.553329-4-thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index 58ca8f246d76647cfa6960976f4be4442372e583..40b1e4458085a0c0c130d77236dd00e1a5b2b8bc 100644 (file)
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -72,7 +72,6 @@ config I440FX
     imply VMPORT
     imply VMMOUSE
     select ACPI_PIIX4
-    select FDC_ISA
     select PC_PCI
     select PC_ACPI
     select PCI_I440FX
@@ -88,7 +87,6 @@ config ISAPC
     depends on I386
     imply VGA_ISA
     select ISA_BUS
-    select FDC_ISA
     select PC
     select IDE_ISA
     # FIXME: it is in the same file as i440fx, and does not compile

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 8850c49c66a20677a4f55c47084e104bc3865357..99efb3c45cba0882a2d52925ee95011f0e7e32ab 100644 (file)
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -317,8 +317,8 @@ static void pc_init1(MachineState *machine, const char *pci_type)
     }
 
     /* init basic PC hardware */
-    pc_basic_device_init(pcms, isa_bus, x86ms->gsi, x86ms->rtc, true,
-                         0x4);
+    pc_basic_device_init(pcms, isa_bus, x86ms->gsi, x86ms->rtc,
+                         !MACHINE_CLASS(pcmc)->no_floppy, 0x4);
 
     pc_nic_init(pcmc, isa_bus, pcms->pcibus);
 
@@ -501,6 +501,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
     m->default_machine_opts = "firmware=bios-256k.bin";
     m->default_display = "std";
     m->default_nic = "e1000";
+    m->no_floppy = !module_object_class_by_name(TYPE_ISA_FDC);
     m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
@@ -931,6 +932,7 @@ static void isapc_machine_options(MachineClass *m)
     pcmc->has_reserved_memory = false;
     m->default_nic = "ne2k_isa";
     m->default_cpu_type = X86_CPU_TYPE_NAME("486");
+    m->no_floppy = !module_object_class_by_name(TYPE_ISA_FDC);
     m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
 }