sm501: Add missing arbitration control register
[qemu.git] / hw / core / null-machine.c
1 /*
2 * Empty machine
3 *
4 * Copyright IBM, Corp. 2012
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 *
12 */
13
14 #include "qemu/osdep.h"
15 #include "qemu-common.h"
16 #include "qemu/error-report.h"
17 #include "hw/hw.h"
18 #include "hw/boards.h"
19 #include "sysemu/sysemu.h"
20 #include "exec/address-spaces.h"
21 #include "cpu.h"
22
23 static void machine_none_init(MachineState *mch)
24 {
25 CPUState *cpu = NULL;
26
27 /* Initialize CPU (if a model has been specified) */
28 if (mch->cpu_model) {
29 cpu = cpu_init(mch->cpu_model);
30 if (!cpu) {
31 error_report("Unable to initialize CPU");
32 exit(1);
33 }
34 }
35
36 /* RAM at address zero */
37 if (mch->ram_size) {
38 MemoryRegion *ram = g_new(MemoryRegion, 1);
39
40 memory_region_allocate_system_memory(ram, NULL, "ram", mch->ram_size);
41 memory_region_add_subregion(get_system_memory(), 0, ram);
42 }
43
44 if (mch->kernel_filename) {
45 error_report("The -kernel parameter is not supported "
46 "(use the generic 'loader' device instead).");
47 exit(1);
48 }
49 }
50
51 static void machine_none_machine_init(MachineClass *mc)
52 {
53 mc->desc = "empty machine";
54 mc->init = machine_none_init;
55 mc->max_cpus = 1;
56 mc->default_ram_size = 0;
57 }
58
59 DEFINE_MACHINE("none", machine_none_machine_init)