PPC: e500: msync is 440 only, e500 has real sync
[qemu.git] / hw / dummy_m68k.c
1 /*
2 * Dummy board with just RAM and CPU for use as an ISS.
3 *
4 * Copyright (c) 2007 CodeSourcery.
5 *
6 * This code is licensed under the GPL
7 */
8
9 #include "hw.h"
10 #include "boards.h"
11 #include "loader.h"
12 #include "elf.h"
13 #include "exec-memory.h"
14
15 #define KERNEL_LOAD_ADDR 0x10000
16
17 /* Board init. */
18
19 static void dummy_m68k_init(ram_addr_t ram_size,
20 const char *boot_device,
21 const char *kernel_filename, const char *kernel_cmdline,
22 const char *initrd_filename, const char *cpu_model)
23 {
24 CPUState *env;
25 MemoryRegion *address_space_mem = get_system_memory();
26 MemoryRegion *ram = g_new(MemoryRegion, 1);
27 int kernel_size;
28 uint64_t elf_entry;
29 target_phys_addr_t entry;
30
31 if (!cpu_model)
32 cpu_model = "cfv4e";
33 env = cpu_init(cpu_model);
34 if (!env) {
35 fprintf(stderr, "Unable to find m68k CPU definition\n");
36 exit(1);
37 }
38
39 /* Initialize CPU registers. */
40 env->vbr = 0;
41
42 /* RAM at address zero */
43 memory_region_init_ram(ram, "dummy_m68k.ram", ram_size);
44 vmstate_register_ram_global(ram);
45 memory_region_add_subregion(address_space_mem, 0, ram);
46
47 /* Load kernel. */
48 if (kernel_filename) {
49 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
50 NULL, NULL, 1, ELF_MACHINE, 0);
51 entry = elf_entry;
52 if (kernel_size < 0) {
53 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
54 }
55 if (kernel_size < 0) {
56 kernel_size = load_image_targphys(kernel_filename,
57 KERNEL_LOAD_ADDR,
58 ram_size - KERNEL_LOAD_ADDR);
59 entry = KERNEL_LOAD_ADDR;
60 }
61 if (kernel_size < 0) {
62 fprintf(stderr, "qemu: could not load kernel '%s'\n",
63 kernel_filename);
64 exit(1);
65 }
66 } else {
67 entry = 0;
68 }
69 env->pc = entry;
70 }
71
72 static QEMUMachine dummy_m68k_machine = {
73 .name = "dummy",
74 .desc = "Dummy board",
75 .init = dummy_m68k_init,
76 };
77
78 static void dummy_m68k_machine_init(void)
79 {
80 qemu_register_machine(&dummy_m68k_machine);
81 }
82
83 machine_init(dummy_m68k_machine_init);