LXR qemu/hw/arm/xen

   1/*
   2 * QEMU ARM Xen PVH Machine
   3 *
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining a copy
   6 * of this software and associated documentation files (the "Software"), to deal
   7 * in the Software without restriction, including without limitation the rights
   8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 * copies of the Software, and to permit persons to whom the Software is
  10 * furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice shall be included in
  13 * all copies or substantial portions of the Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 * THE SOFTWARE.
  22 */
  23
  24#include "qemu/osdep.h"
  25#include "qemu/error-report.h"
  26#include "qapi/qapi-commands-migration.h"
  27#include "qapi/visitor.h"
  28#include "hw/boards.h"
  29#include "hw/sysbus.h"
  30#include "sysemu/block-backend.h"
  31#include "sysemu/tpm_backend.h"
  32#include "sysemu/sysemu.h"
  33#include "hw/xen/xen-hvm-common.h"
  34#include "sysemu/tpm.h"
  35#include "hw/xen/arch_hvm.h"
  36
  37#define TYPE_XEN_ARM  MACHINE_TYPE_NAME("xenpvh")
  38OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
  39
  40static const MemoryListener xen_memory_listener = {
  41    .region_add = xen_region_add,
  42    .region_del = xen_region_del,
  43    .log_start = NULL,
  44    .log_stop = NULL,
  45    .log_sync = NULL,
  46    .log_global_start = NULL,
  47    .log_global_stop = NULL,
  48    .priority = MEMORY_LISTENER_PRIORITY_ACCEL,
  49};
  50
  51struct XenArmState {
  52    /*< private >*/
  53    MachineState parent;
  54
  55    XenIOState *state;
  56
  57    struct {
  58        uint64_t tpm_base_addr;
  59    } cfg;
  60};
  61
  62void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
  63{
  64    hw_error("Invalid ioreq type 0x%x\n", req->type);
  65
  66    return;
  67}
  68
  69void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
  70                         bool add)
  71{
  72}
  73
  74void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  75{
  76}
  77
  78void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
  79{
  80}
  81
  82#ifdef CONFIG_TPM
  83static void xen_enable_tpm(XenArmState *xam)
  84{
  85    Error *errp = NULL;
  86    DeviceState *dev;
  87    SysBusDevice *busdev;
  88
  89    TPMBackend *be = qemu_find_tpm_be("tpm0");
  90    if (be == NULL) {
  91        DPRINTF("Couldn't fine the backend for tpm0\n");
  92        return;
  93    }
  94    dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
  95    object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
  96    object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
  97    busdev = SYS_BUS_DEVICE(dev);
  98    sysbus_realize_and_unref(busdev, &error_fatal);
  99    sysbus_mmio_map(busdev, 0, xam->cfg.tpm_base_addr);
 100
 101    DPRINTF("Connected tpmdev at address 0x%lx\n", xam->cfg.tpm_base_addr);
 102}
 103#endif
 104
 105static void xen_arm_init(MachineState *machine)
 106{
 107    XenArmState *xam = XEN_ARM(machine);
 108
 109    xam->state =  g_new0(XenIOState, 1);
 110
 111    xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener);
 112
 113#ifdef CONFIG_TPM
 114    if (xam->cfg.tpm_base_addr) {
 115        xen_enable_tpm(xam);
 116    } else {
 117        DPRINTF("tpm-base-addr is not provided. TPM will not be enabled\n");
 118    }
 119#endif
 120}
 121
 122#ifdef CONFIG_TPM
 123static void xen_arm_get_tpm_base_addr(Object *obj, Visitor *v,
 124                                      const char *name, void *opaque,
 125                                      Error **errp)
 126{
 127    XenArmState *xam = XEN_ARM(obj);
 128    uint64_t value = xam->cfg.tpm_base_addr;
 129
 130    visit_type_uint64(v, name, &value, errp);
 131}
 132
 133static void xen_arm_set_tpm_base_addr(Object *obj, Visitor *v,
 134                                      const char *name, void *opaque,
 135                                      Error **errp)
 136{
 137    XenArmState *xam = XEN_ARM(obj);
 138    uint64_t value;
 139
 140    if (!visit_type_uint64(v, name, &value, errp)) {
 141        return;
 142    }
 143
 144    xam->cfg.tpm_base_addr = value;
 145}
 146#endif
 147
 148static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
 149{
 150
 151    MachineClass *mc = MACHINE_CLASS(oc);
 152    mc->desc = "Xen Para-virtualized PC";
 153    mc->init = xen_arm_init;
 154    mc->max_cpus = 1;
 155    mc->default_machine_opts = "accel=xen";
 156
 157#ifdef CONFIG_TPM
 158    object_class_property_add(oc, "tpm-base-addr", "uint64_t",
 159                              xen_arm_get_tpm_base_addr,
 160                              xen_arm_set_tpm_base_addr,
 161                              NULL, NULL);
 162    object_class_property_set_description(oc, "tpm-base-addr",
 163                                          "Set Base address for TPM device.");
 164
 165    machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
 166#endif
 167}
 168
 169static const TypeInfo xen_arm_machine_type = {
 170    .name = TYPE_XEN_ARM,
 171    .parent = TYPE_MACHINE,
 172    .class_init = xen_arm_machine_class_init,
 173    .instance_size = sizeof(XenArmState),
 174};
 175
 176static void xen_arm_machine_register_types(void)
 177{
 178    type_register_static(&xen_arm_machine_type);
 179}
 180
 181type_init(xen_arm_machine_register_types)
 182