hw/microblaze/xlnx-zynqmp-pmu.c

   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 "exec/address-spaces.h"
  21 #include "hw/boards.h"
  22 #include "cpu.h"
  23 #include "boot.h"
  24
  25 #include "hw/intc/xlnx-zynqmp-ipi.h"
  26 #include "hw/intc/xlnx-pmu-iomod-intc.h"
  27 #include "qom/object.h"
  28
  29 /* Define the PMU device */
  30
  31 #define TYPE_XLNX_ZYNQMP_PMU_SOC "xlnx,zynqmp-pmu-soc"
  32 OBJECT_DECLARE_SIMPLE_TYPE(XlnxZynqMPPMUSoCState, XLNX_ZYNQMP_PMU_SOC)
  33
  34 #define XLNX_ZYNQMP_PMU_ROM_SIZE    0x8000
  35 #define XLNX_ZYNQMP_PMU_ROM_ADDR    0xFFD00000
  36 #define XLNX_ZYNQMP_PMU_RAM_ADDR    0xFFDC0000
  37
  38 #define XLNX_ZYNQMP_PMU_INTC_ADDR   0xFFD40000
  39
  40 #define XLNX_ZYNQMP_PMU_NUM_IPIS    4
  41
  42 static const uint64_t ipi_addr[XLNX_ZYNQMP_PMU_NUM_IPIS] = {
  43     0xFF340000, 0xFF350000, 0xFF360000, 0xFF370000,
  44 };
  45 static const uint64_t ipi_irq[XLNX_ZYNQMP_PMU_NUM_IPIS] = {
  46     19, 20, 21, 22,
  47 };
  48
  49 struct XlnxZynqMPPMUSoCState {
  50     /*< private >*/
  51     DeviceState parent_obj;
  52
  53     /*< public >*/
  54     MicroBlazeCPU cpu;
  55     XlnxPMUIOIntc intc;
  56     XlnxZynqMPIPI ipi[XLNX_ZYNQMP_PMU_NUM_IPIS];
  57 };
  58
  59
  60 static void xlnx_zynqmp_pmu_soc_init(Object *obj)
  61 {
  62     XlnxZynqMPPMUSoCState *s = XLNX_ZYNQMP_PMU_SOC(obj);
  63
  64     object_initialize_child(obj, "pmu-cpu", &s->cpu, TYPE_MICROBLAZE_CPU);
  65
  66     object_initialize_child(obj, "intc", &s->intc, TYPE_XLNX_PMU_IO_INTC);
  67
  68     /* Create the IPI device */
  69     for (int i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
  70         char *name = g_strdup_printf("ipi%d", i);
  71         object_initialize_child(obj, name, &s->ipi[i], TYPE_XLNX_ZYNQMP_IPI);
  72         g_free(name);
  73     }
  74 }
  75
  76 static void xlnx_zynqmp_pmu_soc_realize(DeviceState *dev, Error **errp)
  77 {
  78     XlnxZynqMPPMUSoCState *s = XLNX_ZYNQMP_PMU_SOC(dev);
  79
  80     object_property_set_uint(OBJECT(&s->cpu), "base-vectors",
  81                              XLNX_ZYNQMP_PMU_ROM_ADDR, &error_abort);
  82     object_property_set_bool(OBJECT(&s->cpu), "use-stack-protection", true,
  83                              &error_abort);
  84     object_property_set_uint(OBJECT(&s->cpu), "use-fpu", 0, &error_abort);
  85     object_property_set_uint(OBJECT(&s->cpu), "use-hw-mul", 0, &error_abort);
  86     object_property_set_bool(OBJECT(&s->cpu), "use-barrel", true,
  87                              &error_abort);
  88     object_property_set_bool(OBJECT(&s->cpu), "use-msr-instr", true,
  89                              &error_abort);
  90     object_property_set_bool(OBJECT(&s->cpu), "use-pcmp-instr", true,
  91                              &error_abort);
  92     object_property_set_bool(OBJECT(&s->cpu), "use-mmu", false, &error_abort);
  93     object_property_set_bool(OBJECT(&s->cpu), "endianness", true,
  94                              &error_abort);
  95     object_property_set_str(OBJECT(&s->cpu), "version", "8.40.b",
  96                             &error_abort);
  97     object_property_set_uint(OBJECT(&s->cpu), "pvr", 0, &error_abort);
  98     if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) {
  99         return;
 100     }
 101
 102     object_property_set_uint(OBJECT(&s->intc), "intc-intr-size", 0x10,
 103                              &error_abort);
 104     object_property_set_uint(OBJECT(&s->intc), "intc-level-edge", 0x0,
 105                              &error_abort);
 106     object_property_set_uint(OBJECT(&s->intc), "intc-positive", 0xffff,
 107                              &error_abort);
 108     if (!sysbus_realize(SYS_BUS_DEVICE(&s->intc), errp)) {
 109         return;
 110     }
 111     sysbus_mmio_map(SYS_BUS_DEVICE(&s->intc), 0, XLNX_ZYNQMP_PMU_INTC_ADDR);
 112     sysbus_connect_irq(SYS_BUS_DEVICE(&s->intc), 0,
 113                        qdev_get_gpio_in(DEVICE(&s->cpu), MB_CPU_IRQ));
 114
 115     /* Connect the IPI device */
 116     for (int i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
 117         sysbus_realize(SYS_BUS_DEVICE(&s->ipi[i]), &error_abort);
 118         sysbus_mmio_map(SYS_BUS_DEVICE(&s->ipi[i]), 0, ipi_addr[i]);
 119         sysbus_connect_irq(SYS_BUS_DEVICE(&s->ipi[i]), 0,
 120                            qdev_get_gpio_in(DEVICE(&s->intc), ipi_irq[i]));
 121     }
 122 }
 123
 124 static void xlnx_zynqmp_pmu_soc_class_init(ObjectClass *oc, void *data)
 125 {
 126     DeviceClass *dc = DEVICE_CLASS(oc);
 127
 128     dc->realize = xlnx_zynqmp_pmu_soc_realize;
 129 }
 130
 131 static const TypeInfo xlnx_zynqmp_pmu_soc_type_info = {
 132     .name = TYPE_XLNX_ZYNQMP_PMU_SOC,
 133     .parent = TYPE_DEVICE,
 134     .instance_size = sizeof(XlnxZynqMPPMUSoCState),
 135     .instance_init = xlnx_zynqmp_pmu_soc_init,
 136     .class_init = xlnx_zynqmp_pmu_soc_class_init,
 137 };
 138
 139 static void xlnx_zynqmp_pmu_soc_register_types(void)
 140 {
 141     type_register_static(&xlnx_zynqmp_pmu_soc_type_info);
 142 }
 143
 144 type_init(xlnx_zynqmp_pmu_soc_register_types)
 145
 146 /* Define the PMU Machine */
 147
 148 static void xlnx_zynqmp_pmu_init(MachineState *machine)
 149 {
 150     XlnxZynqMPPMUSoCState *pmu = g_new0(XlnxZynqMPPMUSoCState, 1);
 151     MemoryRegion *address_space_mem = get_system_memory();
 152     MemoryRegion *pmu_rom = g_new(MemoryRegion, 1);
 153     MemoryRegion *pmu_ram = g_new(MemoryRegion, 1);
 154
 155     /* Create the ROM */
 156     memory_region_init_rom(pmu_rom, NULL, "xlnx-zynqmp-pmu.rom",
 157                            XLNX_ZYNQMP_PMU_ROM_SIZE, &error_fatal);
 158     memory_region_add_subregion(address_space_mem, XLNX_ZYNQMP_PMU_ROM_ADDR,
 159                                 pmu_rom);
 160
 161     /* Create the RAM */
 162     memory_region_init_ram(pmu_ram, NULL, "xlnx-zynqmp-pmu.ram",
 163                            machine->ram_size, &error_fatal);
 164     memory_region_add_subregion(address_space_mem, XLNX_ZYNQMP_PMU_RAM_ADDR,
 165                                 pmu_ram);
 166
 167     /* Create the PMU device */
 168     object_initialize_child(OBJECT(machine), "pmu", pmu,
 169                             TYPE_XLNX_ZYNQMP_PMU_SOC);
 170     qdev_realize(DEVICE(pmu), NULL, &error_fatal);
 171
 172     /* Load the kernel */
 173     microblaze_load_kernel(&pmu->cpu, XLNX_ZYNQMP_PMU_RAM_ADDR,
 174                            machine->ram_size,
 175                            machine->initrd_filename,
 176                            machine->dtb,
 177                            NULL);
 178 }
 179
 180 static void xlnx_zynqmp_pmu_machine_init(MachineClass *mc)
 181 {
 182     mc->desc = "Xilinx ZynqMP PMU machine";
 183     mc->init = xlnx_zynqmp_pmu_init;
 184 }
 185
 186 DEFINE_MACHINE("xlnx-zynqmp-pmu", xlnx_zynqmp_pmu_machine_init)
 187