qemu/hw/core/null-machine.c
Thomas Huth 3858ff7639 hw/core: Move null-machine into the common-obj list
The null-machine code used to be target specific since it used the
target-specific cpu_init() function in the past. But in the recent
commit 2278b93941 ("Use cpu_create(type) instead of
cpu_init(cpu_model)") this has been change, so that the code now
uses the common cpu_create() function instead. Thus we can put
the null-machine into the common-obj list so that it is compiled
only once for all targets, to save some compilation time.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2018-10-24 07:27:25 +01:00

60 lines
1.4 KiB
C

/*
* Empty machine
*
* Copyright IBM, Corp. 2012
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/error-report.h"
#include "hw/hw.h"
#include "hw/boards.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "qom/cpu.h"
static void machine_none_init(MachineState *mch)
{
CPUState *cpu = NULL;
/* Initialize CPU (if user asked for it) */
if (mch->cpu_type) {
cpu = cpu_create(mch->cpu_type);
if (!cpu) {
error_report("Unable to initialize CPU");
exit(1);
}
}
/* RAM at address zero */
if (mch->ram_size) {
MemoryRegion *ram = g_new(MemoryRegion, 1);
memory_region_allocate_system_memory(ram, NULL, "ram", mch->ram_size);
memory_region_add_subregion(get_system_memory(), 0, ram);
}
if (mch->kernel_filename) {
error_report("The -kernel parameter is not supported "
"(use the generic 'loader' device instead).");
exit(1);
}
}
static void machine_none_machine_init(MachineClass *mc)
{
mc->desc = "empty machine";
mc->init = machine_none_init;
mc->max_cpus = 1;
mc->default_ram_size = 0;
}
DEFINE_MACHINE("none", machine_none_machine_init)