m68k/ColdFire system emulation.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2851 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 89 insertions, 0 deletions

diff --git a/hw/an5206.c b/hw/an5206.c
new file mode 100644
index 0000000000..1306d1964d
--- /dev/null
+++ b/hw/an5206.c
@@ -0,0 +1,89 @@
+/* 
+ * Arnewsh 5206 ColdFire system emulation.
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ *
+ * This code is licenced under the GPL
+ */
+
+#include "vl.h"
+
+#define KERNEL_LOAD_ADDR 0x10000
+#define AN5206_MBAR_ADDR 0x10000000
+#define AN5206_RAMBAR_ADDR 0x20000000
+
+/* Stub functions for hardware that doesn't exist.  */
+void pic_info(void)
+{
+}
+
+void irq_info(void)
+{
+}
+
+void DMA_run (void)
+{
+}
+
+/* Board init.  */
+
+static void an5206_init(int ram_size, int vga_ram_size, int boot_device,
+                     DisplayState *ds, const char **fd_filename, int snapshot,
+                     const char *kernel_filename, const char *kernel_cmdline,
+                     const char *initrd_filename, const char *cpu_model)
+{
+    CPUState *env;
+    int kernel_size;
+    uint64_t elf_entry;
+    target_ulong entry;
+
+    env = cpu_init();
+    if (!cpu_model)
+        cpu_model = "m5206";
+    cpu_m68k_set_model(env, cpu_model);
+
+    /* Initialize CPU registers.  */
+    env->vbr = 0;
+    /* TODO: allow changing MBAR and RAMBAR.  */
+    env->mbar = AN5206_MBAR_ADDR | 1;
+    env->rambar0 = AN5206_RAMBAR_ADDR | 1;
+
+    /* DRAM at address zero */
+    cpu_register_physical_memory(0, ram_size,
+        qemu_ram_alloc(ram_size) | IO_MEM_RAM);
+
+    /* Internal SRAM.  */
+    cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,
+        qemu_ram_alloc(512) | IO_MEM_RAM);
+
+    mcf5206_init(AN5206_MBAR_ADDR, env);
+
+    /* Load kernel.  */
+    if (!kernel_filename) {
+        fprintf(stderr, "Kernel image must be specified\n");
+        exit(1);
+    }
+
+    kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);
+    entry = elf_entry;
+    if (kernel_size < 0) {
+        kernel_size = load_uboot(kernel_filename, &entry, NULL);
+    }
+    if (kernel_size < 0) {
+        kernel_size = load_image(kernel_filename,
+                                 phys_ram_base + KERNEL_LOAD_ADDR);
+        entry = KERNEL_LOAD_ADDR;
+    }
+    if (kernel_size < 0) {
+        fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
+        exit(1);
+    }
+
+    env->pc = entry;
+}
+
+QEMUMachine an5206_machine = {
+    "an5206",
+    "Arnewsh 5206",
+    an5206_init,
+};