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