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