On 7/3/25 7:49 AM, Djordje Todorovic wrote:
Add RISC-V implementations of the Coherent Manager Global Control
Register (CMGCR) and Cluster Power Controller (CPC) devices. These
are based on the existing MIPS CMGCR and CPC implementations but
adapted for RISC-V systems.

The CMGCR device provides global system control for multi-core
configurations, while the CPC device manages power control for
CPU clusters in RISC-V systems.

This is needed for the MIPS BOSTON AIA board.

Signed-off-by: Chao-ying Fu <c...@mips.com>
Signed-off-by: Djordje Todorovic <djordje.todoro...@htecgroup.com>
---


Reviewed-by: Daniel Henrique Barboza <dbarb...@ventanamicro.com>

  hw/misc/Kconfig               |   5 +
  hw/misc/meson.build           |   1 +
  hw/misc/riscv_cmgcr.c         | 205 +++++++++++++++++++++++++++++++
  hw/misc/riscv_cpc.c           | 225 ++++++++++++++++++++++++++++++++++
  include/hw/misc/riscv_cmgcr.h |  78 ++++++++++++
  include/hw/misc/riscv_cpc.h   |  70 +++++++++++
  6 files changed, 584 insertions(+)
  create mode 100644 hw/misc/riscv_cmgcr.c
  create mode 100644 hw/misc/riscv_cpc.c
  create mode 100644 include/hw/misc/riscv_cmgcr.h
  create mode 100644 include/hw/misc/riscv_cpc.h

diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index ec0fa5aa9f..65a89637ed 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -108,6 +108,11 @@ config STM32L4X5_RCC
  config MIPS_ITU
      bool
+config MIPS_BOSTON_AIA
+    bool
+    default n
+    depends on RISCV64
+
  config MPS2_FPGAIO
      bool
      select LED
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index 6d47de482c..05b1c0f3cc 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -152,6 +152,7 @@ specific_ss.add(when: 'CONFIG_MAC_VIA', if_true: 
files('mac_via.c'))
specific_ss.add(when: 'CONFIG_MIPS_CPS', if_true: files('mips_cmgcr.c', 'mips_cpc.c'))
  specific_ss.add(when: 'CONFIG_MIPS_ITU', if_true: files('mips_itu.c'))
+specific_ss.add(when: 'CONFIG_MIPS_BOSTON_AIA', if_true: 
files('riscv_cmgcr.c', 'riscv_cpc.c'))
system_ss.add(when: 'CONFIG_SBSA_REF', if_true: files('sbsa_ec.c')) diff --git a/hw/misc/riscv_cmgcr.c b/hw/misc/riscv_cmgcr.c
new file mode 100644
index 0000000000..cfc58d8bc2
--- /dev/null
+++ b/hw/misc/riscv_cmgcr.c
@@ -0,0 +1,205 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
+ * Authors: Sanjay Lal <sanj...@kymasys.com>
+ *
+ * Copyright (C) 2015 Imagination Technologies
+ *
+ * Copyright (C) 2025 MIPS
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "hw/sysbus.h"
+#include "migration/vmstate.h"
+#include "hw/misc/riscv_cmgcr.h"
+#include "hw/misc/riscv_cpc.h"
+#include "hw/qdev-properties.h"
+
+#include "cpu.h"
+
+#define CM_RESET_VEC 0x1FC00000
+
+static inline bool is_cpc_connected(RISCVGCRState *s)
+{
+    return s->cpc_mr != NULL;
+}
+
+static inline void update_cpc_base(RISCVGCRState *gcr, uint64_t val)
+{
+    if (is_cpc_connected(gcr)) {
+        gcr->cpc_base = val & GCR_CPC_BASE_MSK;
+        memory_region_transaction_begin();
+        memory_region_set_address(gcr->cpc_mr,
+                                  gcr->cpc_base & GCR_CPC_BASE_CPCBASE_MSK);
+        memory_region_set_enabled(gcr->cpc_mr,
+                                  gcr->cpc_base & GCR_CPC_BASE_CPCEN_MSK);
+        memory_region_transaction_commit();
+    }
+}
+
+static inline void update_gcr_base(RISCVGCRState *gcr, uint64_t val)
+{
+    gcr->gcr_base = val & GCR_BASE_GCRBASE_MSK;
+    memory_region_set_address(&gcr->iomem, gcr->gcr_base);
+
+    /* For boston-aia, cpc_base is set to gcr_base + 0x8001 to enable
+       cpc automatically. */
+    update_cpc_base(gcr, val + 0x8001);
+}
+
+/* Read GCR registers */
+static uint64_t gcr_read(void *opaque, hwaddr addr, unsigned size)
+{
+    RISCVGCRState *gcr = (RISCVGCRState *) opaque;
+
+    switch (addr) {
+    /* Global Control Block Register */
+    case GCR_CONFIG_OFS:
+        /* Set PCORES to 0 */
+        return 0;
+    case GCR_BASE_OFS:
+        return gcr->gcr_base;
+    case GCR_REV_OFS:
+        return gcr->gcr_rev;
+    case GCR_CPC_STATUS_OFS:
+        return is_cpc_connected(gcr);
+    case GCR_L2_CONFIG_OFS:
+        /* L2 BYPASS */
+        return GCR_L2_CONFIG_BYPASS_MSK;
+    default:
+        qemu_log_mask(LOG_UNIMP, "Read %d bytes at GCR offset 0x%" HWADDR_PRIx
+                      "\n", size, addr);
+    }
+    return 0;
+}
+
+static inline target_ulong get_exception_base(RISCVGCRVPState *vps)
+{
+    return vps->reset_base & GCR_CL_RESET_BASE_RESETBASE_MSK;
+}
+
+/* Write GCR registers */
+static void gcr_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
+{
+    RISCVGCRState *gcr = (RISCVGCRState *)opaque;
+    RISCVGCRVPState *current_vps;
+    int cpu_index, c, h;
+
+    for (c = 0; c < gcr->num_core; c++) {
+        for (h = 0; h < gcr->num_hart; h++) {
+            if (addr == RISCV_CLCB_OFS + c * RISCV_CORE_REG_STRIDE + h * 8) {
+                cpu_index = c * gcr->num_hart + h;
+                current_vps = &gcr->vps[cpu_index];
+                current_vps->reset_base = data & GCR_CL_RESET_BASE_MSK;
+                cpu_set_exception_base(cpu_index + gcr->cluster_id *
+                                       gcr->num_core * gcr->num_hart,
+                                       get_exception_base(current_vps));
+                return;
+            }
+        }
+    }
+
+    switch (addr) {
+    case GCR_BASE_OFS:
+        update_gcr_base(gcr, data);
+        break;
+    default:
+        qemu_log_mask(LOG_UNIMP, "Write %d bytes at GCR offset 0x%" HWADDR_PRIx
+                      " 0x%" PRIx64 "\n", size, addr, data);
+        break;
+    }
+}
+
+static const MemoryRegionOps gcr_ops = {
+    .read = gcr_read,
+    .write = gcr_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .impl = {
+        .max_access_size = 8,
+    },
+};
+
+static void riscv_gcr_init(Object *obj)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+    RISCVGCRState *s = RISCV_GCR(obj);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &gcr_ops, s,
+                          "riscv-gcr", GCR_ADDRSPACE_SZ);
+    sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void riscv_gcr_reset(DeviceState *dev)
+{
+    RISCVGCRState *s = RISCV_GCR(dev);
+    int i;
+
+    /* Update cpc_base to gcr_base + 0x8001 to enable cpc automatically. */
+    update_cpc_base(s, s->gcr_base + 0x8001);
+
+    for (i = 0; i < s->num_vps; i++) {
+        s->vps[i].reset_base = CM_RESET_VEC & GCR_CL_RESET_BASE_MSK;
+        cpu_set_exception_base(i, get_exception_base(&s->vps[i]));
+    }
+}
+
+static const VMStateDescription vmstate_riscv_gcr = {
+    .name = "riscv-gcr",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT64(cpc_base, RISCVGCRState),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
+static const Property riscv_gcr_properties[] = {
+    DEFINE_PROP_UINT32("cluster-id", RISCVGCRState, cluster_id, 0),
+    DEFINE_PROP_UINT32("num-vp", RISCVGCRState, num_vps, 1),
+    DEFINE_PROP_UINT32("num-hart", RISCVGCRState, num_hart, 1),
+    DEFINE_PROP_UINT32("num-core", RISCVGCRState, num_core, 1),
+    DEFINE_PROP_INT32("gcr-rev", RISCVGCRState, gcr_rev, 0xa00),
+    DEFINE_PROP_UINT64("gcr-base", RISCVGCRState, gcr_base, GCR_BASE_ADDR),
+    DEFINE_PROP_LINK("cpc", RISCVGCRState, cpc_mr, TYPE_MEMORY_REGION,
+                     MemoryRegion *),
+};
+
+static void riscv_gcr_realize(DeviceState *dev, Error **errp)
+{
+    RISCVGCRState *s = RISCV_GCR(dev);
+
+    /* Create local set of registers for each VP */
+    s->vps = g_new(RISCVGCRVPState, s->num_vps);
+}
+
+static void riscv_gcr_class_init(ObjectClass *klass, const void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    device_class_set_props(dc, riscv_gcr_properties);
+    dc->vmsd = &vmstate_riscv_gcr;
+    device_class_set_legacy_reset(dc, riscv_gcr_reset);
+    dc->realize = riscv_gcr_realize;
+}
+
+static const TypeInfo riscv_gcr_info = {
+    .name          = TYPE_RISCV_GCR,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RISCVGCRState),
+    .instance_init = riscv_gcr_init,
+    .class_init    = riscv_gcr_class_init,
+};
+
+static void riscv_gcr_register_types(void)
+{
+    type_register_static(&riscv_gcr_info);
+}
+
+type_init(riscv_gcr_register_types)
diff --git a/hw/misc/riscv_cpc.c b/hw/misc/riscv_cpc.c
new file mode 100644
index 0000000000..004f0e8062
--- /dev/null
+++ b/hw/misc/riscv_cpc.c
@@ -0,0 +1,225 @@
+/*
+ * Cluster Power Controller emulation
+ *
+ * Copyright (c) 2016 Imagination Technologies
+ *
+ * Copyright (c) 2025 MIPS
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qemu/timer.h"
+#include "hw/sysbus.h"
+#include "migration/vmstate.h"
+
+#include "hw/misc/riscv_cpc.h"
+#include "hw/qdev-properties.h"
+#include "hw/intc/riscv_aclint.h"
+
+static inline uint64_t cpc_vp_run_mask(RISCVCPCState *cpc)
+{
+    if (cpc->num_vp == 64) {
+        return 0xffffffffffffffff;
+    }
+    return (1ULL << cpc->num_vp) - 1;
+}
+
+static void riscv_cpu_reset_async_work(CPUState *cs, run_on_cpu_data data)
+{
+    RISCVCPCState *cpc = (RISCVCPCState *) data.host_ptr;
+
+    cpu_reset(cs);
+    cs->halted = 0;
+    cpc->vp_running |= 1ULL << cs->cpu_index;
+}
+
+static void cpc_run_vp(RISCVCPCState *cpc, uint64_t vp_run)
+{
+    CPUState *cs = first_cpu;
+
+    CPU_FOREACH(cs) {
+        uint64_t i = 1ULL << cs->cpu_index;
+        if (i & vp_run & ~cpc->vp_running) {
+            /*
+             * To avoid racing with a CPU we are just kicking off.
+             * We do the final bit of preparation for the work in
+             * the target CPUs context.
+             */
+            async_safe_run_on_cpu(cs, riscv_cpu_reset_async_work,
+                                  RUN_ON_CPU_HOST_PTR(cpc));
+        }
+    }
+}
+
+static void cpc_stop_vp(RISCVCPCState *cpc, uint64_t vp_stop)
+{
+    CPUState *cs = first_cpu;
+
+    CPU_FOREACH(cs) {
+        uint64_t i = 1ULL << cs->cpu_index;
+        if (i & vp_stop & cpc->vp_running) {
+            cpu_interrupt(cs, CPU_INTERRUPT_HALT);
+            cpc->vp_running &= ~i;
+        }
+    }
+}
+
+static void cpc_write(void *opaque, hwaddr offset, uint64_t data,
+                      unsigned size)
+{
+    RISCVCPCState *s = opaque;
+    int cpu_index, c;
+
+    for (c = 0; c < s->num_core; c++) {
+        cpu_index = c * s->num_hart +
+                    s->cluster_id * s->num_core * s->num_hart;
+        if (offset == CPC_CL_BASE_OFS + CPC_VP_RUN_OFS + c * 
CPC_CORE_REG_STRIDE) {
+            cpc_run_vp(s, (data << cpu_index) & cpc_vp_run_mask(s));
+            return;
+        }
+        if (offset == CPC_CL_BASE_OFS + CPC_VP_STOP_OFS + c * 
CPC_CORE_REG_STRIDE) {
+            cpc_stop_vp(s, (data << cpu_index) & cpc_vp_run_mask(s));
+            return;
+        }
+    }
+
+    switch (offset) {
+    default:
+        qemu_log_mask(LOG_UNIMP,
+                      "%s: Bad offset 0x%x\n",  __func__, (int)offset);
+        break;
+    }
+
+    return;
+}
+
+static uint64_t cpc_read(void *opaque, hwaddr offset, unsigned size)
+{
+    RISCVCPCState *s = opaque;
+    int c;
+
+    for (c = 0; c < s->num_core; c++) {
+        if (offset == CPC_CL_BASE_OFS + CPC_STAT_CONF_OFS + c * 
CPC_CORE_REG_STRIDE) {
+            /* Return the state as U6. */
+            return CPC_Cx_STAT_CONF_SEQ_STATE_U6;
+        }
+    }
+
+    switch (offset) {
+    case CPC_CM_STAT_CONF_OFS:
+        return CPC_Cx_STAT_CONF_SEQ_STATE_U5;
+    case CPC_MTIME_REG_OFS:
+        return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
+                        RISCV_ACLINT_DEFAULT_TIMEBASE_FREQ,
+                        NANOSECONDS_PER_SECOND);
+        return 0;
+    default:
+        qemu_log_mask(LOG_UNIMP,
+                      "%s: Bad offset 0x%x\n",  __func__, (int)offset);
+        return 0;
+    }
+}
+
+static const MemoryRegionOps cpc_ops = {
+    .read = cpc_read,
+    .write = cpc_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .impl = {
+        .max_access_size = 8,
+    },
+};
+
+static void riscv_cpc_init(Object *obj)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+    RISCVCPCState *s = RISCV_CPC(obj);
+
+    memory_region_init_io(&s->mr, OBJECT(s), &cpc_ops, s, "riscv-cpc",
+                          CPC_ADDRSPACE_SZ);
+    sysbus_init_mmio(sbd, &s->mr);
+}
+
+static void riscv_cpc_realize(DeviceState *dev, Error **errp)
+{
+    RISCVCPCState *s = RISCV_CPC(dev);
+
+    if (s->vp_start_running > cpc_vp_run_mask(s)) {
+        error_setg(errp,
+                   "incorrect vp_start_running 0x%" PRIx64 " for num_vp = %d",
+                   s->vp_running, s->num_vp);
+        return;
+    }
+}
+
+static void riscv_cpc_reset(DeviceState *dev)
+{
+    RISCVCPCState *s = RISCV_CPC(dev);
+
+    /* Reflect the fact that all VPs are halted on reset */
+    s->vp_running = 0;
+
+    /* Put selected VPs into run state */
+    cpc_run_vp(s, s->vp_start_running);
+}
+
+static const VMStateDescription vmstate_riscv_cpc = {
+    .name = "riscv-cpc",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT64(vp_running, RISCVCPCState),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
+static const Property riscv_cpc_properties[] = {
+    DEFINE_PROP_UINT32("cluster-id", RISCVCPCState, cluster_id, 0x0),
+    DEFINE_PROP_UINT32("num-vp", RISCVCPCState, num_vp, 0x1),
+    DEFINE_PROP_UINT32("num-hart", RISCVCPCState, num_hart, 0x1),
+    DEFINE_PROP_UINT32("num-core", RISCVCPCState, num_core, 0x1),
+    DEFINE_PROP_UINT64("vp-start-running", RISCVCPCState, vp_start_running, 
0x1),
+};
+
+static void riscv_cpc_class_init(ObjectClass *klass, const void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = riscv_cpc_realize;
+    device_class_set_legacy_reset(dc, riscv_cpc_reset);
+    dc->vmsd = &vmstate_riscv_cpc;
+    device_class_set_props(dc, riscv_cpc_properties);
+}
+
+static const TypeInfo riscv_cpc_info = {
+    .name          = TYPE_RISCV_CPC,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RISCVCPCState),
+    .instance_init = riscv_cpc_init,
+    .class_init    = riscv_cpc_class_init,
+};
+
+static void riscv_cpc_register_types(void)
+{
+    type_register_static(&riscv_cpc_info);
+}
+
+type_init(riscv_cpc_register_types)
diff --git a/include/hw/misc/riscv_cmgcr.h b/include/hw/misc/riscv_cmgcr.h
new file mode 100644
index 0000000000..9ce2ef34f3
--- /dev/null
+++ b/include/hw/misc/riscv_cmgcr.h
@@ -0,0 +1,78 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2015 Imagination Technologies
+ *
+ * Copyright (C) 2025 MIPS
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#ifndef RISCV_CMGCR_H
+#define RISCV_CMGCR_H
+
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_RISCV_GCR "riscv-gcr"
+OBJECT_DECLARE_SIMPLE_TYPE(RISCVGCRState, RISCV_GCR)
+
+#define GCR_BASE_ADDR           0x1fb80000ULL
+#define GCR_ADDRSPACE_SZ        0x8000
+
+/* Offsets to register blocks */
+#define RISCV_GCB_OFS        0x0000 /* Global Control Block */
+#define RISCV_CLCB_OFS       0x2000 /* Core Control Block */
+#define RISCV_CORE_REG_STRIDE 0x100 /* Stride between core-specific registers 
*/
+
+/* Global Control Block Register Map */
+#define GCR_CONFIG_OFS      0x0000
+#define GCR_BASE_OFS        0x0008
+#define GCR_REV_OFS         0x0030
+#define GCR_CPC_STATUS_OFS  0x00F0
+#define GCR_L2_CONFIG_OFS   0x0130
+
+/* GCR_L2_CONFIG register fields */
+#define GCR_L2_CONFIG_BYPASS_SHF    20
+#define GCR_L2_CONFIG_BYPASS_MSK    ((0x1ULL) << GCR_L2_CONFIG_BYPASS_SHF)
+
+/* GCR_BASE register fields */
+#define GCR_BASE_GCRBASE_MSK     0xffffffff8000ULL
+
+/* GCR_CPC_BASE register fields */
+#define GCR_CPC_BASE_CPCEN_MSK   1
+#define GCR_CPC_BASE_CPCBASE_MSK 0xFFFFFFFF8000ULL
+#define GCR_CPC_BASE_MSK (GCR_CPC_BASE_CPCEN_MSK | GCR_CPC_BASE_CPCBASE_MSK)
+
+/* GCR_CL_RESETBASE_OFS register fields */
+#define GCR_CL_RESET_BASE_RESETBASE_MSK 0xFFFFFFFFFFFFF000U
+#define GCR_CL_RESET_BASE_MSK GCR_CL_RESET_BASE_RESETBASE_MSK
+
+typedef struct RISCVGCRVPState RISCVGCRVPState;
+struct RISCVGCRVPState {
+    uint64_t reset_base;
+};
+
+typedef struct RISCVGCRState RISCVGCRState;
+struct RISCVGCRState {
+    SysBusDevice parent_obj;
+
+    int32_t gcr_rev;
+    uint32_t cluster_id;
+    uint32_t num_vps;
+    uint32_t num_hart;
+    uint32_t num_core;
+    hwaddr gcr_base;
+    MemoryRegion iomem;
+    MemoryRegion *cpc_mr;
+
+    uint64_t cpc_base;
+
+    /* VP Local/Other Registers */
+    RISCVGCRVPState *vps;
+};
+
+#endif /* RISCV_CMGCR_H */
diff --git a/include/hw/misc/riscv_cpc.h b/include/hw/misc/riscv_cpc.h
new file mode 100644
index 0000000000..1946c3507a
--- /dev/null
+++ b/include/hw/misc/riscv_cpc.h
@@ -0,0 +1,70 @@
+/*
+ * Cluster Power Controller emulation
+ *
+ * Copyright (c) 2016 Imagination Technologies
+ *
+ * Copyright (c) 2025 MIPS
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#ifndef RISCV_CPC_H
+#define RISCV_CPC_H
+
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define CPC_ADDRSPACE_SZ    0x6000
+
+/* CPC global register offsets relative to base address */
+#define CPC_MTIME_REG_OFS   0x50
+
+#define CPC_CM_STAT_CONF_OFS   0x1008
+
+/* CPC blocks offsets relative to base address */
+#define CPC_CL_BASE_OFS     0x2000
+#define CPC_CORE_REG_STRIDE 0x100 /* Stride between core-specific registers */
+
+/* CPC register offsets relative to block offsets */
+#define CPC_STAT_CONF_OFS   0x08
+#define CPC_VP_STOP_OFS     0x20
+#define CPC_VP_RUN_OFS      0x28
+#define CPC_VP_RUNNING_OFS  0x30
+
+#define SEQ_STATE_BIT       19
+#define SEQ_STATE_U5        0x6
+#define SEQ_STATE_U6        0x7
+#define CPC_Cx_STAT_CONF_SEQ_STATE_U5      (SEQ_STATE_U5 << SEQ_STATE_BIT)
+#define CPC_Cx_STAT_CONF_SEQ_STATE_U6      (SEQ_STATE_U6 << SEQ_STATE_BIT)
+
+#define TYPE_RISCV_CPC "riscv-cpc"
+OBJECT_DECLARE_SIMPLE_TYPE(RISCVCPCState, RISCV_CPC)
+
+typedef struct RISCVCPCState {
+    SysBusDevice parent_obj;
+
+    uint32_t cluster_id;
+    uint32_t num_vp;
+    uint32_t num_hart;
+    uint32_t num_core;
+    uint64_t vp_start_running; /* VPs running from restart */
+
+    MemoryRegion mr;
+    uint64_t vp_running; /* Indicates which VPs are in the run state */
+} RISCVCPCState;
+
+#endif /* RISCV_CPC_H */


Reply via email to