Machine is very simple (only one PCI host bridge and an ISA bridge).
Provide a ibm_43p.cfg file to add more devices to this machine.
Syntax is:
qemu-system-ppc -M 43p -readconfig ibm_43p.cfg
---
docs/ibm_43p.cfg | 34 ++++++++++++++++++++
hw/ppc/prep.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 128 insertions(+)
create mode 100644 docs/ibm_43p.cfg
diff --git a/docs/ibm_43p.cfg b/docs/ibm_43p.cfg
new file mode 100644
index 0000000..cf80b89
--- /dev/null
+++ b/docs/ibm_43p.cfg
@@ -0,0 +1,34 @@
+############################################################################
+#
+# qemu-system-ppc -M 43p creates a bare machine with just the very essential
+# chipset devices being present:
+#
+# 00.0 - Host bridge
+# 0b.0 - ISA bridge
+#
+# This config file documents the other devices and how they are
+# created. You can simply use "-readconfig $thisfile" to create
+# them all.
+
+[device]
+ driver = "i8042"
+
+[device]
+ driver = "pc87312"
+ config = "12"
+
+[device]
+ driver = "pcnet"
+ addr = "12.0"
+
+[device]
+ driver = "isa-ide"
+ iobase = "0x1f0"
+ iobase2 = "0x3f6"
+ irq = "14"
+
+[device]
+ driver = "isa-ide"
+ iobase = "0x170"
+ iobase2 = "0x376"
+ irq = "15"
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index 2920911..6c5558e 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -30,6 +30,7 @@
#include "sysemu/sysemu.h"
#include "hw/isa.h"
#include "hw/pci/pci.h"
+#include "hw/pci/pci_bus.h"
#include "hw/pci/pci_host.h"
#include "hw/ppc.h"
#include "hw/boards.h"
@@ -663,6 +664,91 @@ static void ppc_prep_init(QEMUMachineInitArgs *args)
audio_init(isa_bus, pci_bus);
}
+static int prep_set_cmos_checksum(DeviceState *dev, void *opaque)
+{
+ uint16_t checksum = *(uint16_t*)opaque;
+ ISADevice *rtc;
+
+ rtc = ISA_DEVICE(object_dynamic_cast(OBJECT(dev), "mc146818rtc"));
+ if (rtc) {
+ rtc_set_memory(rtc, 0x2e, checksum & 0xff);
+ rtc_set_memory(rtc, 0x3e, checksum & 0xff);
+ rtc_set_memory(rtc, 0x2f, checksum >> 8);
+ rtc_set_memory(rtc, 0x3f, checksum >> 8);
+ }
+ return 0;
+}
+
+static void ibm_43p_init(QEMUMachineInitArgs *args)
+{
+ CPUPPCState *env = NULL;
+ uint16_t cmos_checksum;
+ PowerPCCPU *cpu;
+ DeviceState *dev;
+ SysBusDevice *pcihost;
+ PCIBus *pci_bus;
+ ISABus *isa_bus;
+ qemu_irq *cpu_exit_irq;
+
+ /* init CPU */
+ if (!args->cpu_model)
+ args->cpu_model = "604";
+ {
+ cpu = cpu_ppc_init(args->cpu_model);
+ if (cpu == NULL) {
+ fprintf(stderr, "Unable to find PowerPC CPU definition\n");
+ exit(1);
+ }
+ env = &cpu->env;
+
+ if (env->flags & POWERPC_FLAG_RTC_CLK) {
+ /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
+ cpu_ppc_tb_init(env, 7812500UL);
+ } else {
+ /* Set time-base frequency to 100 Mhz */
+ cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
+ }
+ qemu_register_reset(ppc_prep_reset, cpu);
+ }
+ if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
+ hw_error("Only 6xx bus is supported on PREP machine\n");
+ }
+
+ /* PCI host */
+ pcihost = SYS_BUS_DEVICE(qdev_create(NULL, "mpc105-pcihost"));
+ qdev_prop_set_uint32(DEVICE(pcihost), "ram-size",
(uint32_t)args->ram_size);
+ if (bios_name == NULL)
+ bios_name = "P93H1904.IMG";
+ qdev_prop_set_string(DEVICE(pcihost), "bios-name", bios_name);
+ object_property_add_child(qdev_get_machine(), "eagle", OBJECT(pcihost),
NULL);
+ qdev_init_nofail(DEVICE(pcihost));
+ pci_bus = PCI_BUS(qdev_get_child_bus(DEVICE(pcihost), "pci.0"));
+ if (pci_bus == NULL) {
+ fprintf(stderr, "Couldn't create PCI host controller.\n");
+ exit(1);
+ }
+
+ /* PCI -> ISA bridge */
+ dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(11, 0), "i82378"));
+ cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
+ qdev_connect_gpio_out(dev, 0,
+ first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
+ qdev_connect_gpio_out(dev, 1, *cpu_exit_irq);
+ sysbus_connect_irq(pcihost, 0, qdev_get_gpio_in(dev, 9));
+ sysbus_connect_irq(pcihost, 1, qdev_get_gpio_in(dev, 11));
+ sysbus_connect_irq(pcihost, 2, qdev_get_gpio_in(dev, 9));
+ sysbus_connect_irq(pcihost, 3, qdev_get_gpio_in(dev, 11));
+ isa_bus = ISA_BUS(qdev_get_child_bus(dev, "isa.0"));
+
+ /* initialize CMOS checksums */
+ cmos_checksum = 0x6aa9;
+ qbus_walk_children(BUS(isa_bus), prep_set_cmos_checksum, NULL,
+ &cmos_checksum);
+
+ /* Now that we have PCI and ISA, initialize audio subsystem */
+ audio_init(isa_bus, pci_bus);
+}
+
static QEMUMachine prep_machine = {
.name = "prep",
.desc = "PowerPC PREP platform",
@@ -671,9 +757,17 @@ static QEMUMachine prep_machine = {
DEFAULT_MACHINE_OPTIONS,
};
+static QEMUMachine ibm_43p_machine = {
+ .name = "43p",
+ .desc = "IBM RS/6000 7248 (43p)",
+ .init = ibm_43p_init,
+ .max_cpus = 1,
+};
+
static void prep_machine_init(void)
{
qemu_register_machine(&prep_machine);
+ qemu_register_machine(&ibm_43p_machine);
}
machine_init(prep_machine_init);
--
1.7.10.4
