hw/arm/xen_arm.c

   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")
  38 OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
  39
  40 static 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
  51 struct XenArmState {
  52     /*< private >*/
  53     MachineState parent;
  54
  55     XenIOState *state;
  56
  57     struct {
  58         uint64_t tpm_base_addr;
  59     } cfg;
  60 };
  61
  62 void 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
  69 void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
  70                          bool add)
  71 {
  72 }
  73
  74 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  75 {
  76 }
  77
  78 void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
  79 {
  80 }
  81
  82 #ifdef CONFIG_TPM
  83 static 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
 105 static 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
 123 static 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
 133 static 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
 148 static 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
 169 static 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
 176 static void xen_arm_machine_register_types(void)
 177 {
 178     type_register_static(&xen_arm_machine_type);
 179 }
 180
 181 type_init(xen_arm_machine_register_types)