qemu/hw/arm/highbank.c
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   1/*
   2 * Calxeda Highbank SoC emulation
   3 *
   4 * Copyright (c) 2010-2012 Calxeda
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2 or later, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 *
  15 * You should have received a copy of the GNU General Public License along with
  16 * this program.  If not, see <http://www.gnu.org/licenses/>.
  17 *
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "qapi/error.h"
  22#include "hw/sysbus.h"
  23#include "hw/arm/arm.h"
  24#include "hw/devices.h"
  25#include "hw/loader.h"
  26#include "net/net.h"
  27#include "sysemu/kvm.h"
  28#include "sysemu/sysemu.h"
  29#include "hw/boards.h"
  30#include "sysemu/block-backend.h"
  31#include "exec/address-spaces.h"
  32#include "qemu/error-report.h"
  33
  34#define SMP_BOOT_ADDR           0x100
  35#define SMP_BOOT_REG            0x40
  36#define MPCORE_PERIPHBASE       0xfff10000
  37
  38#define MVBAR_ADDR              0x200
  39#define BOARD_SETUP_ADDR        (MVBAR_ADDR + 8 * sizeof(uint32_t))
  40
  41#define NIRQ_GIC                160
  42
  43/* Board init.  */
  44
  45static void hb_write_board_setup(ARMCPU *cpu,
  46                                 const struct arm_boot_info *info)
  47{
  48    arm_write_secure_board_setup_dummy_smc(cpu, info, MVBAR_ADDR);
  49}
  50
  51static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  52{
  53    int n;
  54    uint32_t smpboot[] = {
  55        0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */
  56        0xe210000f, /* ands r0, r0, #0x0f */
  57        0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */
  58        0xe0830200, /* add r0, r3, r0, lsl #4 */
  59        0xe59f2024, /* ldr r2, privbase */
  60        0xe3a01001, /* mov r1, #1 */
  61        0xe5821100, /* str r1, [r2, #256] - set GICC_CTLR.Enable */
  62        0xe3a010ff, /* mov r1, #0xff */
  63        0xe5821104, /* str r1, [r2, #260] - set GICC_PMR.Priority to 0xff */
  64        0xf57ff04f, /* dsb */
  65        0xe320f003, /* wfi */
  66        0xe5901000, /* ldr     r1, [r0] */
  67        0xe1110001, /* tst     r1, r1 */
  68        0x0afffffb, /* beq     <wfi> */
  69        0xe12fff11, /* bx      r1 */
  70        MPCORE_PERIPHBASE   /* privbase: MPCore peripheral base address.  */
  71    };
  72    for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
  73        smpboot[n] = tswap32(smpboot[n]);
  74    }
  75    rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR);
  76}
  77
  78static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  79{
  80    CPUARMState *env = &cpu->env;
  81
  82    switch (info->nb_cpus) {
  83    case 4:
  84        address_space_stl_notdirty(&address_space_memory,
  85                                   SMP_BOOT_REG + 0x30, 0,
  86                                   MEMTXATTRS_UNSPECIFIED, NULL);
  87    case 3:
  88        address_space_stl_notdirty(&address_space_memory,
  89                                   SMP_BOOT_REG + 0x20, 0,
  90                                   MEMTXATTRS_UNSPECIFIED, NULL);
  91    case 2:
  92        address_space_stl_notdirty(&address_space_memory,
  93                                   SMP_BOOT_REG + 0x10, 0,
  94                                   MEMTXATTRS_UNSPECIFIED, NULL);
  95        env->regs[15] = SMP_BOOT_ADDR;
  96        break;
  97    default:
  98        break;
  99    }
 100}
 101
 102#define NUM_REGS      0x200
 103static void hb_regs_write(void *opaque, hwaddr offset,
 104                          uint64_t value, unsigned size)
 105{
 106    uint32_t *regs = opaque;
 107
 108    if (offset == 0xf00) {
 109        if (value == 1 || value == 2) {
 110            qemu_system_reset_request();
 111        } else if (value == 3) {
 112            qemu_system_shutdown_request();
 113        }
 114    }
 115
 116    regs[offset/4] = value;
 117}
 118
 119static uint64_t hb_regs_read(void *opaque, hwaddr offset,
 120                             unsigned size)
 121{
 122    uint32_t *regs = opaque;
 123    uint32_t value = regs[offset/4];
 124
 125    if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
 126        value |= 0x30000000;
 127    }
 128
 129    return value;
 130}
 131
 132static const MemoryRegionOps hb_mem_ops = {
 133    .read = hb_regs_read,
 134    .write = hb_regs_write,
 135    .endianness = DEVICE_NATIVE_ENDIAN,
 136};
 137
 138#define TYPE_HIGHBANK_REGISTERS "highbank-regs"
 139#define HIGHBANK_REGISTERS(obj) \
 140    OBJECT_CHECK(HighbankRegsState, (obj), TYPE_HIGHBANK_REGISTERS)
 141
 142typedef struct {
 143    /*< private >*/
 144    SysBusDevice parent_obj;
 145    /*< public >*/
 146
 147    MemoryRegion iomem;
 148    uint32_t regs[NUM_REGS];
 149} HighbankRegsState;
 150
 151static VMStateDescription vmstate_highbank_regs = {
 152    .name = "highbank-regs",
 153    .version_id = 0,
 154    .minimum_version_id = 0,
 155    .fields = (VMStateField[]) {
 156        VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
 157        VMSTATE_END_OF_LIST(),
 158    },
 159};
 160
 161static void highbank_regs_reset(DeviceState *dev)
 162{
 163    HighbankRegsState *s = HIGHBANK_REGISTERS(dev);
 164
 165    s->regs[0x40] = 0x05F20121;
 166    s->regs[0x41] = 0x2;
 167    s->regs[0x42] = 0x05F30121;
 168    s->regs[0x43] = 0x05F40121;
 169}
 170
 171static void highbank_regs_init(Object *obj)
 172{
 173    HighbankRegsState *s = HIGHBANK_REGISTERS(obj);
 174    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
 175
 176    memory_region_init_io(&s->iomem, obj, &hb_mem_ops, s->regs,
 177                          "highbank_regs", 0x1000);
 178    sysbus_init_mmio(dev, &s->iomem);
 179}
 180
 181static void highbank_regs_class_init(ObjectClass *klass, void *data)
 182{
 183    DeviceClass *dc = DEVICE_CLASS(klass);
 184
 185    dc->desc = "Calxeda Highbank registers";
 186    dc->vmsd = &vmstate_highbank_regs;
 187    dc->reset = highbank_regs_reset;
 188}
 189
 190static const TypeInfo highbank_regs_info = {
 191    .name          = TYPE_HIGHBANK_REGISTERS,
 192    .parent        = TYPE_SYS_BUS_DEVICE,
 193    .instance_size = sizeof(HighbankRegsState),
 194    .instance_init = highbank_regs_init,
 195    .class_init    = highbank_regs_class_init,
 196};
 197
 198static void highbank_regs_register_types(void)
 199{
 200    type_register_static(&highbank_regs_info);
 201}
 202
 203type_init(highbank_regs_register_types)
 204
 205static struct arm_boot_info highbank_binfo;
 206
 207enum cxmachines {
 208    CALXEDA_HIGHBANK,
 209    CALXEDA_MIDWAY,
 210};
 211
 212/* ram_size must be set to match the upper bound of memory in the
 213 * device tree (linux/arch/arm/boot/dts/highbank.dts), which is
 214 * normally 0xff900000 or -m 4089. When running this board on a
 215 * 32-bit host, set the reg value of memory to 0xf7ff00000 in the
 216 * device tree and pass -m 2047 to QEMU.
 217 */
 218static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
 219{
 220    ram_addr_t ram_size = machine->ram_size;
 221    const char *cpu_model = machine->cpu_model;
 222    const char *kernel_filename = machine->kernel_filename;
 223    const char *kernel_cmdline = machine->kernel_cmdline;
 224    const char *initrd_filename = machine->initrd_filename;
 225    DeviceState *dev = NULL;
 226    SysBusDevice *busdev;
 227    qemu_irq pic[128];
 228    int n;
 229    qemu_irq cpu_irq[4];
 230    qemu_irq cpu_fiq[4];
 231    MemoryRegion *sysram;
 232    MemoryRegion *dram;
 233    MemoryRegion *sysmem;
 234    char *sysboot_filename;
 235
 236    switch (machine_id) {
 237    case CALXEDA_HIGHBANK:
 238        cpu_model = "cortex-a9";
 239        break;
 240    case CALXEDA_MIDWAY:
 241        cpu_model = "cortex-a15";
 242        break;
 243    }
 244
 245    for (n = 0; n < smp_cpus; n++) {
 246        ObjectClass *oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
 247        Object *cpuobj;
 248        ARMCPU *cpu;
 249
 250        cpuobj = object_new(object_class_get_name(oc));
 251        cpu = ARM_CPU(cpuobj);
 252
 253        object_property_set_int(cpuobj, QEMU_PSCI_CONDUIT_SMC,
 254                                "psci-conduit", &error_abort);
 255
 256        if (n) {
 257            /* Secondary CPUs start in PSCI powered-down state */
 258            object_property_set_bool(cpuobj, true,
 259                                     "start-powered-off", &error_abort);
 260        }
 261
 262        if (object_property_find(cpuobj, "reset-cbar", NULL)) {
 263            object_property_set_int(cpuobj, MPCORE_PERIPHBASE,
 264                                    "reset-cbar", &error_abort);
 265        }
 266        object_property_set_bool(cpuobj, true, "realized", &error_fatal);
 267        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
 268        cpu_fiq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_FIQ);
 269    }
 270
 271    sysmem = get_system_memory();
 272    dram = g_new(MemoryRegion, 1);
 273    memory_region_allocate_system_memory(dram, NULL, "highbank.dram", ram_size);
 274    /* SDRAM at address zero.  */
 275    memory_region_add_subregion(sysmem, 0, dram);
 276
 277    sysram = g_new(MemoryRegion, 1);
 278    memory_region_init_ram(sysram, NULL, "highbank.sysram", 0x8000,
 279                           &error_fatal);
 280    memory_region_add_subregion(sysmem, 0xfff88000, sysram);
 281    if (bios_name != NULL) {
 282        sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 283        if (sysboot_filename != NULL) {
 284            if (load_image_targphys(sysboot_filename, 0xfff88000, 0x8000) < 0) {
 285                error_report("Unable to load %s", bios_name);
 286                exit(1);
 287            }
 288            g_free(sysboot_filename);
 289        } else {
 290            error_report("Unable to find %s", bios_name);
 291            exit(1);
 292        }
 293    }
 294
 295    switch (machine_id) {
 296    case CALXEDA_HIGHBANK:
 297        dev = qdev_create(NULL, "l2x0");
 298        qdev_init_nofail(dev);
 299        busdev = SYS_BUS_DEVICE(dev);
 300        sysbus_mmio_map(busdev, 0, 0xfff12000);
 301
 302        dev = qdev_create(NULL, "a9mpcore_priv");
 303        break;
 304    case CALXEDA_MIDWAY:
 305        dev = qdev_create(NULL, "a15mpcore_priv");
 306        break;
 307    }
 308    qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
 309    qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
 310    qdev_init_nofail(dev);
 311    busdev = SYS_BUS_DEVICE(dev);
 312    sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
 313    for (n = 0; n < smp_cpus; n++) {
 314        sysbus_connect_irq(busdev, n, cpu_irq[n]);
 315        sysbus_connect_irq(busdev, n + smp_cpus, cpu_fiq[n]);
 316    }
 317
 318    for (n = 0; n < 128; n++) {
 319        pic[n] = qdev_get_gpio_in(dev, n);
 320    }
 321
 322    dev = qdev_create(NULL, "sp804");
 323    qdev_prop_set_uint32(dev, "freq0", 150000000);
 324    qdev_prop_set_uint32(dev, "freq1", 150000000);
 325    qdev_init_nofail(dev);
 326    busdev = SYS_BUS_DEVICE(dev);
 327    sysbus_mmio_map(busdev, 0, 0xfff34000);
 328    sysbus_connect_irq(busdev, 0, pic[18]);
 329    sysbus_create_simple("pl011", 0xfff36000, pic[20]);
 330
 331    dev = qdev_create(NULL, "highbank-regs");
 332    qdev_init_nofail(dev);
 333    busdev = SYS_BUS_DEVICE(dev);
 334    sysbus_mmio_map(busdev, 0, 0xfff3c000);
 335
 336    sysbus_create_simple("pl061", 0xfff30000, pic[14]);
 337    sysbus_create_simple("pl061", 0xfff31000, pic[15]);
 338    sysbus_create_simple("pl061", 0xfff32000, pic[16]);
 339    sysbus_create_simple("pl061", 0xfff33000, pic[17]);
 340    sysbus_create_simple("pl031", 0xfff35000, pic[19]);
 341    sysbus_create_simple("pl022", 0xfff39000, pic[23]);
 342
 343    sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
 344
 345    if (nd_table[0].used) {
 346        qemu_check_nic_model(&nd_table[0], "xgmac");
 347        dev = qdev_create(NULL, "xgmac");
 348        qdev_set_nic_properties(dev, &nd_table[0]);
 349        qdev_init_nofail(dev);
 350        sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff50000);
 351        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[77]);
 352        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[78]);
 353        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[79]);
 354
 355        qemu_check_nic_model(&nd_table[1], "xgmac");
 356        dev = qdev_create(NULL, "xgmac");
 357        qdev_set_nic_properties(dev, &nd_table[1]);
 358        qdev_init_nofail(dev);
 359        sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff51000);
 360        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[80]);
 361        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[81]);
 362        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[82]);
 363    }
 364
 365    highbank_binfo.ram_size = ram_size;
 366    highbank_binfo.kernel_filename = kernel_filename;
 367    highbank_binfo.kernel_cmdline = kernel_cmdline;
 368    highbank_binfo.initrd_filename = initrd_filename;
 369    /* highbank requires a dtb in order to boot, and the dtb will override
 370     * the board ID. The following value is ignored, so set it to -1 to be
 371     * clear that the value is meaningless.
 372     */
 373    highbank_binfo.board_id = -1;
 374    highbank_binfo.nb_cpus = smp_cpus;
 375    highbank_binfo.loader_start = 0;
 376    highbank_binfo.write_secondary_boot = hb_write_secondary;
 377    highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary;
 378    if (!kvm_enabled()) {
 379        highbank_binfo.board_setup_addr = BOARD_SETUP_ADDR;
 380        highbank_binfo.write_board_setup = hb_write_board_setup;
 381        highbank_binfo.secure_board_setup = true;
 382    } else {
 383        error_report("WARNING: cannot load built-in Monitor support "
 384                     "if KVM is enabled. Some guests (such as Linux) "
 385                     "may not boot.");
 386    }
 387
 388    arm_load_kernel(ARM_CPU(first_cpu), &highbank_binfo);
 389}
 390
 391static void highbank_init(MachineState *machine)
 392{
 393    calxeda_init(machine, CALXEDA_HIGHBANK);
 394}
 395
 396static void midway_init(MachineState *machine)
 397{
 398    calxeda_init(machine, CALXEDA_MIDWAY);
 399}
 400
 401static void highbank_class_init(ObjectClass *oc, void *data)
 402{
 403    MachineClass *mc = MACHINE_CLASS(oc);
 404
 405    mc->desc = "Calxeda Highbank (ECX-1000)";
 406    mc->init = highbank_init;
 407    mc->block_default_type = IF_SCSI;
 408    mc->max_cpus = 4;
 409}
 410
 411static const TypeInfo highbank_type = {
 412    .name = MACHINE_TYPE_NAME("highbank"),
 413    .parent = TYPE_MACHINE,
 414    .class_init = highbank_class_init,
 415};
 416
 417static void midway_class_init(ObjectClass *oc, void *data)
 418{
 419    MachineClass *mc = MACHINE_CLASS(oc);
 420
 421    mc->desc = "Calxeda Midway (ECX-2000)";
 422    mc->init = midway_init;
 423    mc->block_default_type = IF_SCSI;
 424    mc->max_cpus = 4;
 425}
 426
 427static const TypeInfo midway_type = {
 428    .name = MACHINE_TYPE_NAME("midway"),
 429    .parent = TYPE_MACHINE,
 430    .class_init = midway_class_init,
 431};
 432
 433static void calxeda_machines_init(void)
 434{
 435    type_register_static(&highbank_type);
 436    type_register_static(&midway_type);
 437}
 438
 439type_init(calxeda_machines_init)
 440