1 files changed, 81 insertions, 0 deletions
diff --git a/src/hw/m68k/dummy_m68k.c b/src/hw/m68k/dummy_m68k.c
new file mode 100644
index 0000000..8b3b775
--- /dev/null
+++ b/src/hw/m68k/dummy_m68k.c
@@ -0,0 +1,81 @@
+/*
+ * Dummy board with just RAM and CPU for use as an ISS.
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ *
+ * This code is licensed under the GPL
+ */
+
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "hw/loader.h"
+#include "elf.h"
+#include "exec/address-spaces.h"
+
+#define KERNEL_LOAD_ADDR 0x10000
+
+/* Board init.  */
+
+static void dummy_m68k_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;
+    M68kCPU *cpu;
+    CPUM68KState *env;
+    MemoryRegion *address_space_mem =  get_system_memory();
+    MemoryRegion *ram = g_new(MemoryRegion, 1);
+    int kernel_size;
+    uint64_t elf_entry;
+    hwaddr entry;
+
+    if (!cpu_model)
+        cpu_model = "cfv4e";
+    cpu = cpu_m68k_init(cpu_model);
+    if (!cpu) {
+        fprintf(stderr, "Unable to find m68k CPU definition\n");
+        exit(1);
+    }
+    env = &cpu->env;
+
+    /* Initialize CPU registers.  */
+    env->vbr = 0;
+
+    /* RAM at address zero */
+    memory_region_allocate_system_memory(ram, NULL, "dummy_m68k.ram",
+                                         ram_size);
+    memory_region_add_subregion(address_space_mem, 0, ram);
+
+    /* Load kernel.  */
+    if (kernel_filename) {
+        kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
+                               NULL, NULL, 1, EM_68K, 0);
+        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: could not load kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+    } else {
+        entry = 0;
+    }
+    env->pc = entry;
+}
+
+static void dummy_m68k_machine_init(MachineClass *mc)
+{
+    mc->desc = "Dummy board";
+    mc->init = dummy_m68k_init;
+}
+
+DEFINE_MACHINE("dummy", dummy_m68k_machine_init)