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/error-report.h"
  16 #include "hw/boards.h"
  17 #include "exec/address-spaces.h"
  18 #include "hw/core/cpu.h"
  19
  20 static void machine_none_init(MachineState *mch)
  21 {
  22     CPUState *cpu = NULL;
  23
  24     /* Initialize CPU (if user asked for it) */
  25     if (mch->cpu_type) {
  26         cpu = cpu_create(mch->cpu_type);
  27         if (!cpu) {
  28             error_report("Unable to initialize CPU");
  29             exit(1);
  30         }
  31     }
  32
  33     /* RAM at address zero */
  34     if (mch->ram) {
  35         memory_region_add_subregion(get_system_memory(), 0, mch->ram);
  36     }
  37
  38     if (mch->kernel_filename) {
  39         error_report("The -kernel parameter is not supported "
  40                      "(use the generic 'loader' device instead).");
  41         exit(1);
  42     }
  43 }
  44
  45 static void machine_none_machine_init(MachineClass *mc)
  46 {
  47     mc->desc = "empty machine";
  48     mc->init = machine_none_init;
  49     mc->max_cpus = 1;
  50     mc->default_ram_size = 0;
  51     mc->default_ram_id = "ram";
  52     mc->no_serial = 1;
  53     mc->no_parallel = 1;
  54     mc->no_floppy = 1;
  55     mc->no_cdrom = 1;
  56     mc->no_sdcard = 1;
  57 }
  58
  59 DEFINE_MACHINE("none", machine_none_machine_init)