qemu/hw/microblaze/xlnx-zynqmp-pmu.c
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   1/*
   2 * Xilinx Zynq MPSoC PMU (Power Management Unit) emulation
   3 *
   4 * Copyright (C) 2017 Xilinx Inc
   5 * Written by Alistair Francis <alistair.francis@xilinx.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License as published by the
   9 * Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful, but WITHOUT
  13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15 * for more details.
  16 */
  17
  18#include "qemu/osdep.h"
  19#include "qapi/error.h"
  20#include "qemu-common.h"
  21#include "exec/address-spaces.h"
  22#include "hw/boards.h"
  23#include "hw/qdev-properties.h"
  24#include "cpu.h"
  25#include "boot.h"
  26
  27#include "hw/intc/xlnx-zynqmp-ipi.h"
  28#include "hw/intc/xlnx-pmu-iomod-intc.h"
  29
  30/* Define the PMU device */
  31
  32#define TYPE_XLNX_ZYNQMP_PMU_SOC "xlnx,zynqmp-pmu-soc"
  33#define XLNX_ZYNQMP_PMU_SOC(obj) OBJECT_CHECK(XlnxZynqMPPMUSoCState, (obj), \
  34                                              TYPE_XLNX_ZYNQMP_PMU_SOC)
  35
  36#define XLNX_ZYNQMP_PMU_ROM_SIZE    0x8000
  37#define XLNX_ZYNQMP_PMU_ROM_ADDR    0xFFD00000
  38#define XLNX_ZYNQMP_PMU_RAM_ADDR    0xFFDC0000
  39
  40#define XLNX_ZYNQMP_PMU_INTC_ADDR   0xFFD40000
  41
  42#define XLNX_ZYNQMP_PMU_NUM_IPIS    4
  43
  44static const uint64_t ipi_addr[XLNX_ZYNQMP_PMU_NUM_IPIS] = {
  45    0xFF340000, 0xFF350000, 0xFF360000, 0xFF370000,
  46};
  47static const uint64_t ipi_irq[XLNX_ZYNQMP_PMU_NUM_IPIS] = {
  48    19, 20, 21, 22,
  49};
  50
  51typedef struct XlnxZynqMPPMUSoCState {
  52    /*< private >*/
  53    DeviceState parent_obj;
  54
  55    /*< public >*/
  56    MicroBlazeCPU cpu;
  57    XlnxPMUIOIntc intc;
  58}  XlnxZynqMPPMUSoCState;
  59
  60
  61static void xlnx_zynqmp_pmu_soc_init(Object *obj)
  62{
  63    XlnxZynqMPPMUSoCState *s = XLNX_ZYNQMP_PMU_SOC(obj);
  64
  65    object_initialize_child(obj, "pmu-cpu", &s->cpu, sizeof(s->cpu),
  66                            TYPE_MICROBLAZE_CPU, &error_abort, NULL);
  67
  68    sysbus_init_child_obj(obj, "intc", &s->intc, sizeof(s->intc),
  69                          TYPE_XLNX_PMU_IO_INTC);
  70}
  71
  72static void xlnx_zynqmp_pmu_soc_realize(DeviceState *dev, Error **errp)
  73{
  74    XlnxZynqMPPMUSoCState *s = XLNX_ZYNQMP_PMU_SOC(dev);
  75    Error *err = NULL;
  76
  77    object_property_set_uint(OBJECT(&s->cpu), XLNX_ZYNQMP_PMU_ROM_ADDR,
  78                             "base-vectors", &error_abort);
  79    object_property_set_bool(OBJECT(&s->cpu), true, "use-stack-protection",
  80                             &error_abort);
  81    object_property_set_uint(OBJECT(&s->cpu), 0, "use-fpu", &error_abort);
  82    object_property_set_uint(OBJECT(&s->cpu), 0, "use-hw-mul", &error_abort);
  83    object_property_set_bool(OBJECT(&s->cpu), true, "use-barrel",
  84                             &error_abort);
  85    object_property_set_bool(OBJECT(&s->cpu), true, "use-msr-instr",
  86                             &error_abort);
  87    object_property_set_bool(OBJECT(&s->cpu), true, "use-pcmp-instr",
  88                             &error_abort);
  89    object_property_set_bool(OBJECT(&s->cpu), false, "use-mmu", &error_abort);
  90    object_property_set_bool(OBJECT(&s->cpu), true, "endianness",
  91                             &error_abort);
  92    object_property_set_str(OBJECT(&s->cpu), "8.40.b", "version",
  93                            &error_abort);
  94    object_property_set_uint(OBJECT(&s->cpu), 0, "pvr", &error_abort);
  95    object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  96    if (err) {
  97        error_propagate(errp, err);
  98        return;
  99    }
 100
 101    object_property_set_uint(OBJECT(&s->intc), 0x10, "intc-intr-size",
 102                             &error_abort);
 103    object_property_set_uint(OBJECT(&s->intc), 0x0, "intc-level-edge",
 104                             &error_abort);
 105    object_property_set_uint(OBJECT(&s->intc), 0xffff, "intc-positive",
 106                             &error_abort);
 107    object_property_set_bool(OBJECT(&s->intc), true, "realized", &err);
 108    if (err) {
 109        error_propagate(errp, err);
 110        return;
 111    }
 112    sysbus_mmio_map(SYS_BUS_DEVICE(&s->intc), 0, XLNX_ZYNQMP_PMU_INTC_ADDR);
 113    sysbus_connect_irq(SYS_BUS_DEVICE(&s->intc), 0,
 114                       qdev_get_gpio_in(DEVICE(&s->cpu), MB_CPU_IRQ));
 115}
 116
 117static void xlnx_zynqmp_pmu_soc_class_init(ObjectClass *oc, void *data)
 118{
 119    DeviceClass *dc = DEVICE_CLASS(oc);
 120
 121    dc->realize = xlnx_zynqmp_pmu_soc_realize;
 122}
 123
 124static const TypeInfo xlnx_zynqmp_pmu_soc_type_info = {
 125    .name = TYPE_XLNX_ZYNQMP_PMU_SOC,
 126    .parent = TYPE_DEVICE,
 127    .instance_size = sizeof(XlnxZynqMPPMUSoCState),
 128    .instance_init = xlnx_zynqmp_pmu_soc_init,
 129    .class_init = xlnx_zynqmp_pmu_soc_class_init,
 130};
 131
 132static void xlnx_zynqmp_pmu_soc_register_types(void)
 133{
 134    type_register_static(&xlnx_zynqmp_pmu_soc_type_info);
 135}
 136
 137type_init(xlnx_zynqmp_pmu_soc_register_types)
 138
 139/* Define the PMU Machine */
 140
 141static void xlnx_zynqmp_pmu_init(MachineState *machine)
 142{
 143    XlnxZynqMPPMUSoCState *pmu = g_new0(XlnxZynqMPPMUSoCState, 1);
 144    MemoryRegion *address_space_mem = get_system_memory();
 145    MemoryRegion *pmu_rom = g_new(MemoryRegion, 1);
 146    MemoryRegion *pmu_ram = g_new(MemoryRegion, 1);
 147    XlnxZynqMPIPI *ipi[XLNX_ZYNQMP_PMU_NUM_IPIS];
 148    qemu_irq irq[32];
 149    int i;
 150
 151    /* Create the ROM */
 152    memory_region_init_rom(pmu_rom, NULL, "xlnx-zynqmp-pmu.rom",
 153                           XLNX_ZYNQMP_PMU_ROM_SIZE, &error_fatal);
 154    memory_region_add_subregion(address_space_mem, XLNX_ZYNQMP_PMU_ROM_ADDR,
 155                                pmu_rom);
 156
 157    /* Create the RAM */
 158    memory_region_init_ram(pmu_ram, NULL, "xlnx-zynqmp-pmu.ram",
 159                           machine->ram_size, &error_fatal);
 160    memory_region_add_subregion(address_space_mem, XLNX_ZYNQMP_PMU_RAM_ADDR,
 161                                pmu_ram);
 162
 163    /* Create the PMU device */
 164    object_initialize(pmu, sizeof(XlnxZynqMPPMUSoCState), TYPE_XLNX_ZYNQMP_PMU_SOC);
 165    object_property_add_child(OBJECT(machine), "pmu", OBJECT(pmu),
 166                              &error_abort);
 167    object_property_set_bool(OBJECT(pmu), true, "realized", &error_fatal);
 168
 169    for (i = 0; i < 32; i++) {
 170        irq[i] = qdev_get_gpio_in(DEVICE(&pmu->intc), i);
 171    }
 172
 173    /* Create and connect the IPI device */
 174    for (i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
 175        ipi[i] = g_new0(XlnxZynqMPIPI, 1);
 176        object_initialize(ipi[i], sizeof(XlnxZynqMPIPI), TYPE_XLNX_ZYNQMP_IPI);
 177        qdev_set_parent_bus(DEVICE(ipi[i]), sysbus_get_default());
 178    }
 179
 180    for (i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
 181        object_property_set_bool(OBJECT(ipi[i]), true, "realized",
 182                                 &error_abort);
 183        sysbus_mmio_map(SYS_BUS_DEVICE(ipi[i]), 0, ipi_addr[i]);
 184        sysbus_connect_irq(SYS_BUS_DEVICE(ipi[i]), 0, irq[ipi_irq[i]]);
 185    }
 186
 187    /* Load the kernel */
 188    microblaze_load_kernel(&pmu->cpu, XLNX_ZYNQMP_PMU_RAM_ADDR,
 189                           machine->ram_size,
 190                           machine->initrd_filename,
 191                           machine->dtb,
 192                           NULL);
 193}
 194
 195static void xlnx_zynqmp_pmu_machine_init(MachineClass *mc)
 196{
 197    mc->desc = "Xilinx ZynqMP PMU machine";
 198    mc->init = xlnx_zynqmp_pmu_init;
 199}
 200
 201DEFINE_MACHINE("xlnx-zynqmp-pmu", xlnx_zynqmp_pmu_machine_init)
 202
 203