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 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 } 52 53 DEFINE_MACHINE("none", machine_none_machine_init) 54