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/*
* QEMU ARM Xen PVH Machine
*
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qapi/qapi-commands-migration.h"
#include "qapi/visitor.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "hw/sysbus.h"
#include "sysemu/block-backend.h"
#include "sysemu/tpm_backend.h"
#include "sysemu/sysemu.h"
#include "hw/xen/xen-hvm-common.h"
#include "sysemu/tpm.h"
#include "hw/xen/arch_hvm.h"
#include "trace.h"
#define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpvh")
OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
static const MemoryListener xen_memory_listener = {
.region_add = xen_region_add,
.region_del = xen_region_del,
.log_start = NULL,
.log_stop = NULL,
.log_sync = NULL,
.log_global_start = NULL,
.log_global_stop = NULL,
.priority = MEMORY_LISTENER_PRIORITY_ACCEL,
};
struct XenArmState {
/*< private >*/
MachineState parent;
XenIOState *state;
struct {
uint64_t tpm_base_addr;
} cfg;
};
static MemoryRegion ram_lo, ram_hi;
/*
* VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c under Xen
* repository.
*
* Origin: git://xenbits.xen.org/xen.git 2128143c114c
*/
#define VIRTIO_MMIO_DEV_SIZE 0x200
#define NR_VIRTIO_MMIO_DEVICES \
(GUEST_VIRTIO_MMIO_SPI_LAST - GUEST_VIRTIO_MMIO_SPI_FIRST)
static void xen_set_irq(void *opaque, int irq, int level)
{
if (xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level)) {
error_report("xendevicemodel_set_irq_level failed");
}
}
static void xen_create_virtio_mmio_devices(XenArmState *xam)
{
int i;
for (i = 0; i < NR_VIRTIO_MMIO_DEVICES; i++) {
hwaddr base = GUEST_VIRTIO_MMIO_BASE + i * VIRTIO_MMIO_DEV_SIZE;
qemu_irq irq = qemu_allocate_irq(xen_set_irq, NULL,
GUEST_VIRTIO_MMIO_SPI_FIRST + i);
sysbus_create_simple("virtio-mmio", base, irq);
trace_xen_create_virtio_mmio_devices(i,
GUEST_VIRTIO_MMIO_SPI_FIRST + i,
base);
}
}
static void xen_init_ram(MachineState *machine)
{
MemoryRegion *sysmem = get_system_memory();
ram_addr_t block_len, ram_size[GUEST_RAM_BANKS];
trace_xen_init_ram(machine->ram_size);
if (machine->ram_size <= GUEST_RAM0_SIZE) {
ram_size[0] = machine->ram_size;
ram_size[1] = 0;
block_len = GUEST_RAM0_BASE + ram_size[0];
} else {
ram_size[0] = GUEST_RAM0_SIZE;
ram_size[1] = machine->ram_size - GUEST_RAM0_SIZE;
block_len = GUEST_RAM1_BASE + ram_size[1];
}
memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len,
&error_fatal);
memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &xen_memory,
GUEST_RAM0_BASE, ram_size[0]);
memory_region_add_subregion(sysmem, GUEST_RAM0_BASE, &ram_lo);
if (ram_size[1] > 0) {
memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &xen_memory,
GUEST_RAM1_BASE, ram_size[1]);
memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi);
}
/* Setup support for grants. */
memory_region_init_ram(&xen_grants, NULL, "xen.grants", block_len,
&error_fatal);
memory_region_add_subregion(sysmem, XEN_GRANT_ADDR_OFF, &xen_grants);
}
void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
{
hw_error("Invalid ioreq type 0x%x\n", req->type);
return;
}
void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
bool add)
{
}
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
}
void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
{
}
#ifdef CONFIG_TPM
static void xen_enable_tpm(XenArmState *xam)
{
Error *errp = NULL;
DeviceState *dev;
SysBusDevice *busdev;
TPMBackend *be = qemu_find_tpm_be("tpm0");
if (be == NULL) {
error_report("Couldn't find tmp0 backend");
return;
}
dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, xam->cfg.tpm_base_addr);
trace_xen_enable_tpm(xam->cfg.tpm_base_addr);
}
#endif
static void xen_arm_init(MachineState *machine)
{
XenArmState *xam = XEN_ARM(machine);
xam->state = g_new0(XenIOState, 1);
if (machine->ram_size == 0) {
warn_report("%s non-zero ram size not specified. QEMU machine started"
" without IOREQ (no emulated devices including virtio)",
MACHINE_CLASS(object_get_class(OBJECT(machine)))->desc);
return;
}
xen_init_ram(machine);
xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener);
xen_create_virtio_mmio_devices(xam);
#ifdef CONFIG_TPM
if (xam->cfg.tpm_base_addr) {
xen_enable_tpm(xam);
} else {
warn_report("tpm-base-addr is not provided. TPM will not be enabled");
}
#endif
}
#ifdef CONFIG_TPM
static void xen_arm_get_tpm_base_addr(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
XenArmState *xam = XEN_ARM(obj);
uint64_t value = xam->cfg.tpm_base_addr;
visit_type_uint64(v, name, &value, errp);
}
static void xen_arm_set_tpm_base_addr(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
XenArmState *xam = XEN_ARM(obj);
uint64_t value;
if (!visit_type_uint64(v, name, &value, errp)) {
return;
}
xam->cfg.tpm_base_addr = value;
}
#endif
static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "Xen Para-virtualized PC";
mc->init = xen_arm_init;
mc->max_cpus = 1;
mc->default_machine_opts = "accel=xen";
/* Set explicitly here to make sure that real ram_size is passed */
mc->default_ram_size = 0;
#ifdef CONFIG_TPM
object_class_property_add(oc, "tpm-base-addr", "uint64_t",
xen_arm_get_tpm_base_addr,
xen_arm_set_tpm_base_addr,
NULL, NULL);
object_class_property_set_description(oc, "tpm-base-addr",
"Set Base address for TPM device.");
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
#endif
}
static const TypeInfo xen_arm_machine_type = {
.name = TYPE_XEN_ARM,
.parent = TYPE_MACHINE,
.class_init = xen_arm_machine_class_init,
.instance_size = sizeof(XenArmState),
};
static void xen_arm_machine_register_types(void)
{
type_register_static(&xen_arm_machine_type);
}
type_init(xen_arm_machine_register_types)
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