hw/ppc/pnv_core.c - qemu - Git at Google

 /*
  * QEMU PowerPC PowerNV CPU Core model
  *
  * Copyright (c) 2016, IBM Corporation.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
  * as published by the Free Software Foundation; either version 2.1 of
  * the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */

 #include "qemu/osdep.h"
 #include "sysemu/reset.h"
 #include "qapi/error.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
 #include "target/ppc/cpu.h"
 #include "hw/ppc/ppc.h"
 #include "hw/ppc/pnv.h"
 #include "hw/ppc/pnv_chip.h"
 #include "hw/ppc/pnv_core.h"
 #include "hw/ppc/pnv_xscom.h"
 #include "hw/ppc/xics.h"
 #include "hw/qdev-properties.h"
 #include "helper_regs.h"

 static const char *pnv_core_cpu_typename(PnvCore *pc)
 {
     const char *core_type = object_class_get_name(object_get_class(OBJECT(pc)));
     int len = strlen(core_type) - strlen(PNV_CORE_TYPE_SUFFIX);
     char *s = g_strdup_printf(POWERPC_CPU_TYPE_NAME("%.*s"), len, core_type);
     const char *cpu_type = object_class_get_name(object_class_by_name(s));
     g_free(s);
     return cpu_type;
 }

 static void pnv_core_cpu_reset(PnvCore *pc, PowerPCCPU *cpu)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
     PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

     cpu_reset(cs);

     /*
      * the skiboot firmware elects a primary thread to initialize the
      * system and it can be any.
      */
     env->gpr[3] = PNV_FDT_ADDR;
     env->nip = 0x10;
     env->msr |= MSR_HVB; /* Hypervisor mode */
     env->spr[SPR_HRMOR] = pc->hrmor;
     hreg_compute_hflags(env);
     ppc_maybe_interrupt(env);

     pcc->intc_reset(pc->chip, cpu);
 }

 /*
  * These values are read by the PowerNV HW monitors under Linux
  */
 #define PNV_XSCOM_EX_DTS_RESULT0     0x50000
 #define PNV_XSCOM_EX_DTS_RESULT1     0x50001

 static uint64_t pnv_core_power8_xscom_read(void *opaque, hwaddr addr,
                                            unsigned int width)
 {
     uint32_t offset = addr >> 3;
     uint64_t val = 0;

     /* The result should be 38 C */
     switch (offset) {
     case PNV_XSCOM_EX_DTS_RESULT0:
         val = 0x26f024f023f0000ull;
         break;
     case PNV_XSCOM_EX_DTS_RESULT1:
         val = 0x24f000000000000ull;
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
                   addr);
     }

     return val;
 }

 static void pnv_core_power8_xscom_write(void *opaque, hwaddr addr, uint64_t val,
                                         unsigned int width)
 {
     qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
                   addr);
 }

 static const MemoryRegionOps pnv_core_power8_xscom_ops = {
     .read = pnv_core_power8_xscom_read,
     .write = pnv_core_power8_xscom_write,
     .valid.min_access_size = 8,
     .valid.max_access_size = 8,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };


 /*
  * POWER9 core controls
  */
 #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
 #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a

 static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
                                            unsigned int width)
 {
     uint32_t offset = addr >> 3;
     uint64_t val = 0;

     /* The result should be 38 C */
     switch (offset) {
     case PNV_XSCOM_EX_DTS_RESULT0:
         val = 0x26f024f023f0000ull;
         break;
     case PNV_XSCOM_EX_DTS_RESULT1:
         val = 0x24f000000000000ull;
         break;
     case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
     case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
         val = 0x0;
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
                   addr);
     }

     return val;
 }

 static void pnv_core_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
                                         unsigned int width)
 {
     uint32_t offset = addr >> 3;

     switch (offset) {
     case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
     case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
                       addr);
     }
 }

 static const MemoryRegionOps pnv_core_power9_xscom_ops = {
     .read = pnv_core_power9_xscom_read,
     .write = pnv_core_power9_xscom_write,
     .valid.min_access_size = 8,
     .valid.max_access_size = 8,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };

 static void pnv_core_cpu_realize(PnvCore *pc, PowerPCCPU *cpu, Error **errp)
 {
     CPUPPCState *env = &cpu->env;
     int core_pir;
     int thread_index = 0; /* TODO: TCG supports only one thread */
     ppc_spr_t *pir = &env->spr_cb[SPR_PIR];
     Error *local_err = NULL;
     PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

     if (!qdev_realize(DEVICE(cpu), NULL, errp)) {
         return;
     }

     pcc->intc_create(pc->chip, cpu, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
     }

     core_pir = object_property_get_uint(OBJECT(pc), "pir", &error_abort);

     /*
      * The PIR of a thread is the core PIR + the thread index. We will
      * need to find a way to get the thread index when TCG supports
      * more than 1. We could use the object name ?
      */
     pir->default_value = core_pir + thread_index;

     /* Set time-base frequency to 512 MHz */
     cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
 }

 static void pnv_core_reset(void *dev)
 {
     CPUCore *cc = CPU_CORE(dev);
     PnvCore *pc = PNV_CORE(dev);
     int i;

     for (i = 0; i < cc->nr_threads; i++) {
         pnv_core_cpu_reset(pc, pc->threads[i]);
     }
 }

 static void pnv_core_realize(DeviceState *dev, Error **errp)
 {
     PnvCore *pc = PNV_CORE(OBJECT(dev));
     PnvCoreClass *pcc = PNV_CORE_GET_CLASS(pc);
     CPUCore *cc = CPU_CORE(OBJECT(dev));
     const char *typename = pnv_core_cpu_typename(pc);
     Error *local_err = NULL;
     void *obj;
     int i, j;
     char name[32];

     assert(pc->chip);

     pc->threads = g_new(PowerPCCPU *, cc->nr_threads);
     for (i = 0; i < cc->nr_threads; i++) {
         PowerPCCPU *cpu;

         obj = object_new(typename);
         cpu = POWERPC_CPU(obj);

         pc->threads[i] = POWERPC_CPU(obj);

         snprintf(name, sizeof(name), "thread[%d]", i);
         object_property_add_child(OBJECT(pc), name, obj);

         cpu->machine_data = g_new0(PnvCPUState, 1);

         object_unref(obj);
     }

     for (j = 0; j < cc->nr_threads; j++) {
         pnv_core_cpu_realize(pc, pc->threads[j], &local_err);
         if (local_err) {
             goto err;
         }
     }

     snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
     /* TODO: check PNV_XSCOM_EX_SIZE for p10 */
     pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
                           pc, name, PNV_XSCOM_EX_SIZE);

     qemu_register_reset(pnv_core_reset, pc);
     return;

 err:
     while (--i >= 0) {
         obj = OBJECT(pc->threads[i]);
         object_unparent(obj);
     }
     g_free(pc->threads);
     error_propagate(errp, local_err);
 }

 static void pnv_core_cpu_unrealize(PnvCore *pc, PowerPCCPU *cpu)
 {
     PnvCPUState *pnv_cpu = pnv_cpu_state(cpu);
     PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

     pcc->intc_destroy(pc->chip, cpu);
     cpu_remove_sync(CPU(cpu));
     cpu->machine_data = NULL;
     g_free(pnv_cpu);
     object_unparent(OBJECT(cpu));
 }

 static void pnv_core_unrealize(DeviceState *dev)
 {
     PnvCore *pc = PNV_CORE(dev);
     CPUCore *cc = CPU_CORE(dev);
     int i;

     qemu_unregister_reset(pnv_core_reset, pc);

     for (i = 0; i < cc->nr_threads; i++) {
         pnv_core_cpu_unrealize(pc, pc->threads[i]);
     }
     g_free(pc->threads);
 }

 static Property pnv_core_properties[] = {
     DEFINE_PROP_UINT32("pir", PnvCore, pir, 0),
     DEFINE_PROP_UINT64("hrmor", PnvCore, hrmor, 0),
     DEFINE_PROP_LINK("chip", PnvCore, chip, TYPE_PNV_CHIP, PnvChip *),
     DEFINE_PROP_END_OF_LIST(),
 };

 static void pnv_core_power8_class_init(ObjectClass *oc, void *data)
 {
     PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

     pcc->xscom_ops = &pnv_core_power8_xscom_ops;
 }

 static void pnv_core_power9_class_init(ObjectClass *oc, void *data)
 {
     PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

     pcc->xscom_ops = &pnv_core_power9_xscom_ops;
 }

 static void pnv_core_power10_class_init(ObjectClass *oc, void *data)
 {
     PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

     /* TODO: Use the P9 XSCOMs for now on P10 */
     pcc->xscom_ops = &pnv_core_power9_xscom_ops;
 }

 static void pnv_core_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = pnv_core_realize;
     dc->unrealize = pnv_core_unrealize;
     device_class_set_props(dc, pnv_core_properties);
     dc->user_creatable = false;
 }

 #define DEFINE_PNV_CORE_TYPE(family, cpu_model) \
     {                                           \
         .parent = TYPE_PNV_CORE,                \
         .name = PNV_CORE_TYPE_NAME(cpu_model),  \
         .class_init = pnv_core_##family##_class_init, \
     }

 static const TypeInfo pnv_core_infos[] = {
     {
         .name           = TYPE_PNV_CORE,
         .parent         = TYPE_CPU_CORE,
         .instance_size  = sizeof(PnvCore),
         .class_size     = sizeof(PnvCoreClass),
         .class_init = pnv_core_class_init,
         .abstract       = true,
     },
     DEFINE_PNV_CORE_TYPE(power8, "power8e_v2.1"),
     DEFINE_PNV_CORE_TYPE(power8, "power8_v2.0"),
     DEFINE_PNV_CORE_TYPE(power8, "power8nvl_v1.0"),
     DEFINE_PNV_CORE_TYPE(power9, "power9_v2.2"),
     DEFINE_PNV_CORE_TYPE(power10, "power10_v2.0"),
 };

 DEFINE_TYPES(pnv_core_infos)

 /*
  * POWER9 Quads
  */

 #define P9X_EX_NCU_SPEC_BAR                     0x11010

 static uint64_t pnv_quad_xscom_read(void *opaque, hwaddr addr,
                                     unsigned int width)
 {
     uint32_t offset = addr >> 3;
     uint64_t val = -1;

     switch (offset) {
     case P9X_EX_NCU_SPEC_BAR:
     case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
         val = 0;
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
                       offset);
     }

     return val;
 }

 static void pnv_quad_xscom_write(void *opaque, hwaddr addr, uint64_t val,
                                  unsigned int width)
 {
     uint32_t offset = addr >> 3;

     switch (offset) {
     case P9X_EX_NCU_SPEC_BAR:
     case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
                   offset);
     }
 }

 static const MemoryRegionOps pnv_quad_xscom_ops = {
     .read = pnv_quad_xscom_read,
     .write = pnv_quad_xscom_write,
     .valid.min_access_size = 8,
     .valid.max_access_size = 8,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .endianness = DEVICE_BIG_ENDIAN,
 };

 static void pnv_quad_realize(DeviceState *dev, Error **errp)
 {
     PnvQuad *eq = PNV_QUAD(dev);
     char name[32];

     snprintf(name, sizeof(name), "xscom-quad.%d", eq->quad_id);
     pnv_xscom_region_init(&eq->xscom_regs, OBJECT(dev), &pnv_quad_xscom_ops,
                           eq, name, PNV9_XSCOM_EQ_SIZE);
 }

 static Property pnv_quad_properties[] = {
     DEFINE_PROP_UINT32("quad-id", PnvQuad, quad_id, 0),
     DEFINE_PROP_END_OF_LIST(),
 };

 static void pnv_quad_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);

     dc->realize = pnv_quad_realize;
     device_class_set_props(dc, pnv_quad_properties);
     dc->user_creatable = false;
 }

 static const TypeInfo pnv_quad_info = {
     .name          = TYPE_PNV_QUAD,
     .parent        = TYPE_DEVICE,
     .instance_size = sizeof(PnvQuad),
     .class_init    = pnv_quad_class_init,
 };

 static void pnv_core_register_types(void)
 {
     type_register_static(&pnv_quad_info);
 }

 type_init(pnv_core_register_types)
	/*
	* QEMU PowerPC PowerNV CPU Core model
	*
	* Copyright (c) 2016, IBM Corporation.
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public License
	* as published by the Free Software Foundation; either version 2.1 of
	* the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include "qemu/osdep.h"
	#include "sysemu/reset.h"
	#include "qapi/error.h"
	#include "qemu/log.h"
	#include "qemu/module.h"
	#include "target/ppc/cpu.h"
	#include "hw/ppc/ppc.h"
	#include "hw/ppc/pnv.h"
	#include "hw/ppc/pnv_chip.h"
	#include "hw/ppc/pnv_core.h"
	#include "hw/ppc/pnv_xscom.h"
	#include "hw/ppc/xics.h"
	#include "hw/qdev-properties.h"
	#include "helper_regs.h"

	static const char pnv_core_cpu_typename(PnvCore pc)
	{
	const char *core_type = object_class_get_name(object_get_class(OBJECT(pc)));
	int len = strlen(core_type) - strlen(PNV_CORE_TYPE_SUFFIX);
	char s = g_strdup_printf(POWERPC_CPU_TYPE_NAME("%.s"), len, core_type);
	const char *cpu_type = object_class_get_name(object_class_by_name(s));
	g_free(s);
	return cpu_type;
	}

	static void pnv_core_cpu_reset(PnvCore pc, PowerPCCPU cpu)
	{
	CPUState *cs = CPU(cpu);
	CPUPPCState *env = &cpu->env;
	PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

	cpu_reset(cs);

	/*
	* the skiboot firmware elects a primary thread to initialize the
	* system and it can be any.
	*/
	env->gpr[3] = PNV_FDT_ADDR;
	env->nip = 0x10;
	env->msr \|= MSR_HVB; /* Hypervisor mode */
	env->spr[SPR_HRMOR] = pc->hrmor;
	hreg_compute_hflags(env);
	ppc_maybe_interrupt(env);

	pcc->intc_reset(pc->chip, cpu);
	}

	/*
	* These values are read by the PowerNV HW monitors under Linux
	*/
	#define PNV_XSCOM_EX_DTS_RESULT0 0x50000
	#define PNV_XSCOM_EX_DTS_RESULT1 0x50001

	static uint64_t pnv_core_power8_xscom_read(void *opaque, hwaddr addr,
	unsigned int width)
	{
	uint32_t offset = addr >> 3;
	uint64_t val = 0;

	/* The result should be 38 C */
	switch (offset) {
	case PNV_XSCOM_EX_DTS_RESULT0:
	val = 0x26f024f023f0000ull;
	break;
	case PNV_XSCOM_EX_DTS_RESULT1:
	val = 0x24f000000000000ull;
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
	addr);
	}

	return val;
	}

	static void pnv_core_power8_xscom_write(void *opaque, hwaddr addr, uint64_t val,
	unsigned int width)
	{
	qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
	addr);
	}

	static const MemoryRegionOps pnv_core_power8_xscom_ops = {
	.read = pnv_core_power8_xscom_read,
	.write = pnv_core_power8_xscom_write,
	.valid.min_access_size = 8,
	.valid.max_access_size = 8,
	.impl.min_access_size = 8,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};


	/*
	* POWER9 core controls
	*/
	#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
	#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a

	static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
	unsigned int width)
	{
	uint32_t offset = addr >> 3;
	uint64_t val = 0;

	/* The result should be 38 C */
	switch (offset) {
	case PNV_XSCOM_EX_DTS_RESULT0:
	val = 0x26f024f023f0000ull;
	break;
	case PNV_XSCOM_EX_DTS_RESULT1:
	val = 0x24f000000000000ull;
	break;
	case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
	case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
	val = 0x0;
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
	addr);
	}

	return val;
	}

	static void pnv_core_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
	unsigned int width)
	{
	uint32_t offset = addr >> 3;

	switch (offset) {
	case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
	case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
	addr);
	}
	}

	static const MemoryRegionOps pnv_core_power9_xscom_ops = {
	.read = pnv_core_power9_xscom_read,
	.write = pnv_core_power9_xscom_write,
	.valid.min_access_size = 8,
	.valid.max_access_size = 8,
	.impl.min_access_size = 8,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};

	static void pnv_core_cpu_realize(PnvCore pc, PowerPCCPU cpu, Error **errp)
	{
	CPUPPCState *env = &cpu->env;
	int core_pir;
	int thread_index = 0; /* TODO: TCG supports only one thread */
	ppc_spr_t *pir = &env->spr_cb[SPR_PIR];
	Error *local_err = NULL;
	PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

	if (!qdev_realize(DEVICE(cpu), NULL, errp)) {
	return;
	}

	pcc->intc_create(pc->chip, cpu, &local_err);
	if (local_err) {
	error_propagate(errp, local_err);
	return;
	}

	core_pir = object_property_get_uint(OBJECT(pc), "pir", &error_abort);

	/*
	* The PIR of a thread is the core PIR + the thread index. We will
	* need to find a way to get the thread index when TCG supports
	* more than 1. We could use the object name ?
	*/
	pir->default_value = core_pir + thread_index;

	/* Set time-base frequency to 512 MHz */
	cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
	}

	static void pnv_core_reset(void *dev)
	{
	CPUCore *cc = CPU_CORE(dev);
	PnvCore *pc = PNV_CORE(dev);
	int i;

	for (i = 0; i < cc->nr_threads; i++) {
	pnv_core_cpu_reset(pc, pc->threads[i]);
	}
	}

	static void pnv_core_realize(DeviceState dev, Error *errp)
	{
	PnvCore *pc = PNV_CORE(OBJECT(dev));
	PnvCoreClass *pcc = PNV_CORE_GET_CLASS(pc);
	CPUCore *cc = CPU_CORE(OBJECT(dev));
	const char *typename = pnv_core_cpu_typename(pc);
	Error *local_err = NULL;
	void *obj;
	int i, j;
	char name[32];

	assert(pc->chip);

	pc->threads = g_new(PowerPCCPU *, cc->nr_threads);
	for (i = 0; i < cc->nr_threads; i++) {
	PowerPCCPU *cpu;

	obj = object_new(typename);
	cpu = POWERPC_CPU(obj);

	pc->threads[i] = POWERPC_CPU(obj);

	snprintf(name, sizeof(name), "thread[%d]", i);
	object_property_add_child(OBJECT(pc), name, obj);

	cpu->machine_data = g_new0(PnvCPUState, 1);

	object_unref(obj);
	}

	for (j = 0; j < cc->nr_threads; j++) {
	pnv_core_cpu_realize(pc, pc->threads[j], &local_err);
	if (local_err) {
	goto err;
	}
	}

	snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
	/* TODO: check PNV_XSCOM_EX_SIZE for p10 */
	pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
	pc, name, PNV_XSCOM_EX_SIZE);

	qemu_register_reset(pnv_core_reset, pc);
	return;

	err:
	while (--i >= 0) {
	obj = OBJECT(pc->threads[i]);
	object_unparent(obj);
	}
	g_free(pc->threads);
	error_propagate(errp, local_err);
	}

	static void pnv_core_cpu_unrealize(PnvCore pc, PowerPCCPU cpu)
	{
	PnvCPUState *pnv_cpu = pnv_cpu_state(cpu);
	PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);

	pcc->intc_destroy(pc->chip, cpu);
	cpu_remove_sync(CPU(cpu));
	cpu->machine_data = NULL;
	g_free(pnv_cpu);
	object_unparent(OBJECT(cpu));
	}

	static void pnv_core_unrealize(DeviceState *dev)
	{
	PnvCore *pc = PNV_CORE(dev);
	CPUCore *cc = CPU_CORE(dev);
	int i;

	qemu_unregister_reset(pnv_core_reset, pc);

	for (i = 0; i < cc->nr_threads; i++) {
	pnv_core_cpu_unrealize(pc, pc->threads[i]);
	}
	g_free(pc->threads);
	}

	static Property pnv_core_properties[] = {
	DEFINE_PROP_UINT32("pir", PnvCore, pir, 0),
	DEFINE_PROP_UINT64("hrmor", PnvCore, hrmor, 0),
	DEFINE_PROP_LINK("chip", PnvCore, chip, TYPE_PNV_CHIP, PnvChip *),
	DEFINE_PROP_END_OF_LIST(),
	};

	static void pnv_core_power8_class_init(ObjectClass oc, void data)
	{
	PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

	pcc->xscom_ops = &pnv_core_power8_xscom_ops;
	}

	static void pnv_core_power9_class_init(ObjectClass oc, void data)
	{
	PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

	pcc->xscom_ops = &pnv_core_power9_xscom_ops;
	}

	static void pnv_core_power10_class_init(ObjectClass oc, void data)
	{
	PnvCoreClass *pcc = PNV_CORE_CLASS(oc);

	/* TODO: Use the P9 XSCOMs for now on P10 */
	pcc->xscom_ops = &pnv_core_power9_xscom_ops;
	}

	static void pnv_core_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = pnv_core_realize;
	dc->unrealize = pnv_core_unrealize;
	device_class_set_props(dc, pnv_core_properties);
	dc->user_creatable = false;
	}

	#define DEFINE_PNV_CORE_TYPE(family, cpu_model) \
	{ \
	.parent = TYPE_PNV_CORE, \
	.name = PNV_CORE_TYPE_NAME(cpu_model), \
	.class_init = pnv_core_##family##_class_init, \
	}

	static const TypeInfo pnv_core_infos[] = {
	{
	.name = TYPE_PNV_CORE,
	.parent = TYPE_CPU_CORE,
	.instance_size = sizeof(PnvCore),
	.class_size = sizeof(PnvCoreClass),
	.class_init = pnv_core_class_init,
	.abstract = true,
	},
	DEFINE_PNV_CORE_TYPE(power8, "power8e_v2.1"),
	DEFINE_PNV_CORE_TYPE(power8, "power8_v2.0"),
	DEFINE_PNV_CORE_TYPE(power8, "power8nvl_v1.0"),
	DEFINE_PNV_CORE_TYPE(power9, "power9_v2.2"),
	DEFINE_PNV_CORE_TYPE(power10, "power10_v2.0"),
	};

	DEFINE_TYPES(pnv_core_infos)

	/*
	* POWER9 Quads
	*/

	#define P9X_EX_NCU_SPEC_BAR 0x11010

	static uint64_t pnv_quad_xscom_read(void *opaque, hwaddr addr,
	unsigned int width)
	{
	uint32_t offset = addr >> 3;
	uint64_t val = -1;

	switch (offset) {
	case P9X_EX_NCU_SPEC_BAR:
	case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
	val = 0;
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
	offset);
	}

	return val;
	}

	static void pnv_quad_xscom_write(void *opaque, hwaddr addr, uint64_t val,
	unsigned int width)
	{
	uint32_t offset = addr >> 3;

	switch (offset) {
	case P9X_EX_NCU_SPEC_BAR:
	case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
	break;
	default:
	qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
	offset);
	}
	}

	static const MemoryRegionOps pnv_quad_xscom_ops = {
	.read = pnv_quad_xscom_read,
	.write = pnv_quad_xscom_write,
	.valid.min_access_size = 8,
	.valid.max_access_size = 8,
	.impl.min_access_size = 8,
	.impl.max_access_size = 8,
	.endianness = DEVICE_BIG_ENDIAN,
	};

	static void pnv_quad_realize(DeviceState dev, Error *errp)
	{
	PnvQuad *eq = PNV_QUAD(dev);
	char name[32];

	snprintf(name, sizeof(name), "xscom-quad.%d", eq->quad_id);
	pnv_xscom_region_init(&eq->xscom_regs, OBJECT(dev), &pnv_quad_xscom_ops,
	eq, name, PNV9_XSCOM_EQ_SIZE);
	}

	static Property pnv_quad_properties[] = {
	DEFINE_PROP_UINT32("quad-id", PnvQuad, quad_id, 0),
	DEFINE_PROP_END_OF_LIST(),
	};

	static void pnv_quad_class_init(ObjectClass oc, void data)
	{
	DeviceClass *dc = DEVICE_CLASS(oc);

	dc->realize = pnv_quad_realize;
	device_class_set_props(dc, pnv_quad_properties);
	dc->user_creatable = false;
	}

	static const TypeInfo pnv_quad_info = {
	.name = TYPE_PNV_QUAD,
	.parent = TYPE_DEVICE,
	.instance_size = sizeof(PnvQuad),
	.class_init = pnv_quad_class_init,
	};

	static void pnv_core_register_types(void)
	{
	type_register_static(&pnv_quad_info);
	}

	type_init(pnv_core_register_types)