1 files changed, 143 insertions, 0 deletions
diff --git a/src/hw/openrisc/openrisc_sim.c b/src/hw/openrisc/openrisc_sim.c
new file mode 100644
index 0000000..be6c9b5
--- /dev/null
+++ b/src/hw/openrisc/openrisc_sim.c
@@ -0,0 +1,143 @@
+/*
+ * OpenRISC simulator for use as an IIS.
+ *
+ * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *                         Feng Gao <gf91597@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "elf.h"
+#include "hw/char/serial.h"
+#include "net/net.h"
+#include "hw/loader.h"
+#include "exec/address-spaces.h"
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+#include "sysemu/qtest.h"
+
+#define KERNEL_LOAD_ADDR 0x100
+
+static void main_cpu_reset(void *opaque)
+{
+    OpenRISCCPU *cpu = opaque;
+
+    cpu_reset(CPU(cpu));
+}
+
+static void openrisc_sim_net_init(MemoryRegion *address_space,
+                                  hwaddr base,
+                                  hwaddr descriptors,
+                                  qemu_irq irq, NICInfo *nd)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_create(NULL, "open_eth");
+    qdev_set_nic_properties(dev, nd);
+    qdev_init_nofail(dev);
+
+    s = SYS_BUS_DEVICE(dev);
+    sysbus_connect_irq(s, 0, irq);
+    memory_region_add_subregion(address_space, base,
+                                sysbus_mmio_get_region(s, 0));
+    memory_region_add_subregion(address_space, descriptors,
+                                sysbus_mmio_get_region(s, 1));
+}
+
+static void cpu_openrisc_load_kernel(ram_addr_t ram_size,
+                                     const char *kernel_filename,
+                                     OpenRISCCPU *cpu)
+{
+    long kernel_size;
+    uint64_t elf_entry;
+    hwaddr entry;
+
+    if (kernel_filename && !qtest_enabled()) {
+        kernel_size = load_elf(kernel_filename, NULL, NULL,
+                               &elf_entry, NULL, NULL, 1, EM_OPENRISC, 1);
+        entry = elf_entry;
+        if (kernel_size < 0) {
+            kernel_size = load_uimage(kernel_filename,
+                                      &entry, NULL, NULL, NULL, NULL);
+        }
+        if (kernel_size < 0) {
+            kernel_size = load_image_targphys(kernel_filename,
+                                              KERNEL_LOAD_ADDR,
+                                              ram_size - KERNEL_LOAD_ADDR);
+            entry = KERNEL_LOAD_ADDR;
+        }
+
+        if (kernel_size < 0) {
+            fprintf(stderr, "QEMU: couldn't load the kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+        cpu->env.pc = entry;
+    }
+}
+
+static void openrisc_sim_init(MachineState *machine)
+{
+    ram_addr_t ram_size = machine->ram_size;
+    const char *cpu_model = machine->cpu_model;
+    const char *kernel_filename = machine->kernel_filename;
+    OpenRISCCPU *cpu = NULL;
+    MemoryRegion *ram;
+    int n;
+
+    if (!cpu_model) {
+        cpu_model = "or1200";
+    }
+
+    for (n = 0; n < smp_cpus; n++) {
+        cpu = cpu_openrisc_init(cpu_model);
+        if (cpu == NULL) {
+            fprintf(stderr, "Unable to find CPU definition!\n");
+            exit(1);
+        }
+        qemu_register_reset(main_cpu_reset, cpu);
+        main_cpu_reset(cpu);
+    }
+
+    ram = g_malloc(sizeof(*ram));
+    memory_region_init_ram(ram, NULL, "openrisc.ram", ram_size, &error_fatal);
+    vmstate_register_ram_global(ram);
+    memory_region_add_subregion(get_system_memory(), 0, ram);
+
+    cpu_openrisc_pic_init(cpu);
+    cpu_openrisc_clock_init(cpu);
+
+    serial_mm_init(get_system_memory(), 0x90000000, 0, cpu->env.irq[2],
+                   115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
+
+    if (nd_table[0].used) {
+        openrisc_sim_net_init(get_system_memory(), 0x92000000,
+                              0x92000400, cpu->env.irq[4], nd_table);
+    }
+
+    cpu_openrisc_load_kernel(ram_size, kernel_filename, cpu);
+}
+
+static void openrisc_sim_machine_init(MachineClass *mc)
+{
+    mc->desc = "or32 simulation";
+    mc->init = openrisc_sim_init;
+    mc->max_cpus = 1;
+    mc->is_default = 1;
+}
+
+DEFINE_MACHINE("or32-sim", openrisc_sim_machine_init)