unicorn/qemu/hw/arm/virt.c
Peter Maydell 29a7d89d19
osdep.h: Move some compiler-specific things to compiler.h
osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.

Backports commit 4912086865083a008f4fb73173fd0ddf2206c4d9 from qemu
2018-02-17 15:23:28 -05:00

76 lines
2.6 KiB
C

/*
* ARM mach-virt emulation
*
* Copyright (c) 2013 Linaro Limited
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* Emulate a virtual board which works by passing Linux all the information
* it needs about what devices are present via the device tree.
* There are some restrictions about what we can do here:
* + we can only present devices whose Linux drivers will work based
* purely on the device tree with no platform data at all
* + we want to present a very stripped-down minimalist platform,
* both because this reduces the security attack surface from the guest
* and also because it reduces our exposure to being broken when
* the kernel updates its device tree bindings and requires further
* information in a device binding that we aren't providing.
* This is essentially the same approach kvmtool uses.
*/
/* Unicorn Emulator Engine */
/* By Nguyen Anh Quynh, 2015 */
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "hw/arm/arm.h"
#include "hw/boards.h"
#include "exec/address-spaces.h"
static int machvirt_init(struct uc_struct *uc, MachineState *machine)
{
const char *cpu_model = machine->cpu_model;
int n;
if (!cpu_model) {
cpu_model = "cortex-a57"; // ARM64
}
for (n = 0; n < smp_cpus; n++) {
Object *cpuobj;
ObjectClass *oc = cpu_class_by_name(uc, TYPE_ARM_CPU, cpu_model);
if (!oc) {
fprintf(stderr, "Unable to find CPU definition\n");
return -1;
}
cpuobj = object_new(uc, object_class_get_name(oc));
uc->cpu = (CPUState *)cpuobj;
object_property_set_bool(uc, cpuobj, true, "realized", NULL);
}
return 0;
}
void machvirt_machine_init(struct uc_struct *uc)
{
static QEMUMachine machvirt_a15_machine = { 0 };
machvirt_a15_machine.name = "virt",
machvirt_a15_machine.init = machvirt_init,
machvirt_a15_machine.is_default = 1,
machvirt_a15_machine.arch = UC_ARCH_ARM64,
qemu_register_machine(uc, &machvirt_a15_machine, TYPE_MACHINE, NULL);
}