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Diffstat (limited to 'hw/nios2/10m50_devboard.c')
-rw-r--r--hw/nios2/10m50_devboard.c115
1 files changed, 90 insertions, 25 deletions
diff --git a/hw/nios2/10m50_devboard.c b/hw/nios2/10m50_devboard.c
index 3d1205b8bd..91383fb097 100644
--- a/hw/nios2/10m50_devboard.c
+++ b/hw/nios2/10m50_devboard.c
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/char/serial.h"
+#include "hw/intc/nios2_vic.h"
 #include "hw/qdev-properties.h"
 #include "sysemu/sysemu.h"
 #include "hw/boards.h"
@@ -36,17 +37,28 @@
 
 #include "boot.h"
 
+struct Nios2MachineState {
+    MachineState parent_obj;
+
+    MemoryRegion phys_tcm;
+    MemoryRegion phys_tcm_alias;
+    MemoryRegion phys_ram;
+    MemoryRegion phys_ram_alias;
+
+    bool vic;
+};
+
+#define TYPE_NIOS2_MACHINE  MACHINE_TYPE_NAME("10m50-ghrd")
+OBJECT_DECLARE_TYPE(Nios2MachineState, MachineClass, NIOS2_MACHINE)
+
 #define BINARY_DEVICE_TREE_FILE    "10m50-devboard.dtb"
 
 static void nios2_10m50_ghrd_init(MachineState *machine)
 {
+    Nios2MachineState *nms = NIOS2_MACHINE(machine);
     Nios2CPU *cpu;
     DeviceState *dev;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *phys_tcm = g_new(MemoryRegion, 1);
-    MemoryRegion *phys_tcm_alias = g_new(MemoryRegion, 1);
-    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
-    MemoryRegion *phys_ram_alias = g_new(MemoryRegion, 1);
     ram_addr_t tcm_base = 0x0;
     ram_addr_t tcm_size = 0x1000;    /* 1 kiB, but QEMU limit is 4 kiB */
     ram_addr_t ram_base = 0x08000000;
@@ -55,27 +67,56 @@ static void nios2_10m50_ghrd_init(MachineState *machine)
     int i;
 
     /* Physical TCM (tb_ram_1k) with alias at 0xc0000000 */
-    memory_region_init_ram(phys_tcm, NULL, "nios2.tcm", tcm_size,
+    memory_region_init_ram(&nms->phys_tcm, NULL, "nios2.tcm", tcm_size,
                            &error_abort);
-    memory_region_init_alias(phys_tcm_alias, NULL, "nios2.tcm.alias",
-                             phys_tcm, 0, tcm_size);
-    memory_region_add_subregion(address_space_mem, tcm_base, phys_tcm);
+    memory_region_init_alias(&nms->phys_tcm_alias, NULL, "nios2.tcm.alias",
+                             &nms->phys_tcm, 0, tcm_size);
+    memory_region_add_subregion(address_space_mem, tcm_base, &nms->phys_tcm);
     memory_region_add_subregion(address_space_mem, 0xc0000000 + tcm_base,
-                                phys_tcm_alias);
+                                &nms->phys_tcm_alias);
 
     /* Physical DRAM with alias at 0xc0000000 */
-    memory_region_init_ram(phys_ram, NULL, "nios2.ram", ram_size,
+    memory_region_init_ram(&nms->phys_ram, NULL, "nios2.ram", ram_size,
                            &error_abort);
-    memory_region_init_alias(phys_ram_alias, NULL, "nios2.ram.alias",
-                             phys_ram, 0, ram_size);
-    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
+    memory_region_init_alias(&nms->phys_ram_alias, NULL, "nios2.ram.alias",
+                             &nms->phys_ram, 0, ram_size);
+    memory_region_add_subregion(address_space_mem, ram_base, &nms->phys_ram);
     memory_region_add_subregion(address_space_mem, 0xc0000000 + ram_base,
-                                phys_ram_alias);
+                                &nms->phys_ram_alias);
 
-    /* Create CPU -- FIXME */
-    cpu = NIOS2_CPU(cpu_create(TYPE_NIOS2_CPU));
-    for (i = 0; i < 32; i++) {
-        irq[i] = qdev_get_gpio_in_named(DEVICE(cpu), "IRQ", i);
+    /* Create CPU.  We need to set eic_present between init and realize. */
+    cpu = NIOS2_CPU(object_new(TYPE_NIOS2_CPU));
+
+    /* Enable the External Interrupt Controller within the CPU. */
+    cpu->eic_present = nms->vic;
+
+    /* Configure new exception vectors. */
+    cpu->reset_addr = 0xd4000000;
+    cpu->exception_addr = 0xc8000120;
+    cpu->fast_tlb_miss_addr = 0xc0000100;
+
+    qdev_realize_and_unref(DEVICE(cpu), NULL, &error_fatal);
+
+    if (nms->vic) {
+        DeviceState *dev = qdev_new(TYPE_NIOS2_VIC);
+        MemoryRegion *dev_mr;
+        qemu_irq cpu_irq;
+
+        object_property_set_link(OBJECT(dev), "cpu", OBJECT(cpu), &error_fatal);
+        sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
+        cpu_irq = qdev_get_gpio_in_named(DEVICE(cpu), "EIC", 0);
+        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irq);
+        for (int i = 0; i < 32; i++) {
+            irq[i] = qdev_get_gpio_in(dev, i);
+        }
+
+        dev_mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+        memory_region_add_subregion(address_space_mem, 0x18002000, dev_mr);
+    } else {
+        for (i = 0; i < 32; i++) {
+            irq[i] = qdev_get_gpio_in_named(DEVICE(cpu), "IRQ", i);
+        }
     }
 
     /* Register: Altera 16550 UART */
@@ -96,20 +137,44 @@ static void nios2_10m50_ghrd_init(MachineState *machine)
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xe0000880);
     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[5]);
 
-    /* Configure new exception vectors and reset CPU for it to take effect. */
-    cpu->reset_addr = 0xd4000000;
-    cpu->exception_addr = 0xc8000120;
-    cpu->fast_tlb_miss_addr = 0xc0000100;
-
     nios2_load_kernel(cpu, ram_base, ram_size, machine->initrd_filename,
                       BINARY_DEVICE_TREE_FILE, NULL);
 }
 
-static void nios2_10m50_ghrd_machine_init(struct MachineClass *mc)
+static bool get_vic(Object *obj, Error **errp)
+{
+    Nios2MachineState *nms = NIOS2_MACHINE(obj);
+    return nms->vic;
+}
+
+static void set_vic(Object *obj, bool value, Error **errp)
+{
+    Nios2MachineState *nms = NIOS2_MACHINE(obj);
+    nms->vic = value;
+}
+
+static void nios2_10m50_ghrd_class_init(ObjectClass *oc, void *data)
 {
+    MachineClass *mc = MACHINE_CLASS(oc);
+
     mc->desc = "Altera 10M50 GHRD Nios II design";
     mc->init = nios2_10m50_ghrd_init;
     mc->is_default = true;
+
+    object_class_property_add_bool(oc, "vic", get_vic, set_vic);
+    object_class_property_set_description(oc, "vic",
+        "Set on/off to enable/disable the Vectored Interrupt Controller");
 }
 
-DEFINE_MACHINE("10m50-ghrd", nios2_10m50_ghrd_machine_init);
+static const TypeInfo nios2_10m50_ghrd_type_info = {
+    .name          = TYPE_NIOS2_MACHINE,
+    .parent        = TYPE_MACHINE,
+    .instance_size = sizeof(Nios2MachineState),
+    .class_init    = nios2_10m50_ghrd_class_init,
+};
+
+static void nios2_10m50_ghrd_type_init(void)
+{
+    type_register_static(&nios2_10m50_ghrd_type_info);
+}
+type_init(nios2_10m50_ghrd_type_init);