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#include "hw/char/pl011.h"
  34
  35#define SMP_BOOT_ADDR           0x100
  36#define SMP_BOOT_REG            0x40
  37#define MPCORE_PERIPHBASE       0xfff10000
  38
  39#define MVBAR_ADDR              0x200
  40#define BOARD_SETUP_ADDR        (MVBAR_ADDR + 8 * sizeof(uint32_t))
  41
  42#define NIRQ_GIC                160
  43
  44/* Board init.  */
  45
  46static void hb_write_board_setup(ARMCPU *cpu,
  47                                 const struct arm_boot_info *info)
  48{
  49    arm_write_secure_board_setup_dummy_smc(cpu, info, MVBAR_ADDR);
  50}
  51
  52static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  53{
  54    int n;
  55    uint32_t smpboot[] = {
  56        0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */
  57        0xe210000f, /* ands r0, r0, #0x0f */
  58        0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */
  59        0xe0830200, /* add r0, r3, r0, lsl #4 */
  60        0xe59f2024, /* ldr r2, privbase */
  61        0xe3a01001, /* mov r1, #1 */
  62        0xe5821100, /* str r1, [r2, #256] - set GICC_CTLR.Enable */
  63        0xe3a010ff, /* mov r1, #0xff */
  64        0xe5821104, /* str r1, [r2, #260] - set GICC_PMR.Priority to 0xff */
  65        0xf57ff04f, /* dsb */
  66        0xe320f003, /* wfi */
  67        0xe5901000, /* ldr     r1, [r0] */
  68        0xe1110001, /* tst     r1, r1 */
  69        0x0afffffb, /* beq     <wfi> */
  70        0xe12fff11, /* bx      r1 */
  71        MPCORE_PERIPHBASE   /* privbase: MPCore peripheral base address.  */
  72    };
  73    for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
  74        smpboot[n] = tswap32(smpboot[n]);
  75    }
  76    rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR);
  77}
  78
  79static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
  80{
  81    CPUARMState *env = &cpu->env;
  82
  83    switch (info->nb_cpus) {
  84    case 4:
  85        address_space_stl_notdirty(&address_space_memory,
  86                                   SMP_BOOT_REG + 0x30, 0,
  87                                   MEMTXATTRS_UNSPECIFIED, NULL);
  88    case 3:
  89        address_space_stl_notdirty(&address_space_memory,
  90                                   SMP_BOOT_REG + 0x20, 0,
  91                                   MEMTXATTRS_UNSPECIFIED, NULL);
  92    case 2:
  93        address_space_stl_notdirty(&address_space_memory,
  94                                   SMP_BOOT_REG + 0x10, 0,
  95                                   MEMTXATTRS_UNSPECIFIED, NULL);
  96        env->regs[15] = SMP_BOOT_ADDR;
  97        break;
  98    default:
  99        break;
 100    }
 101}
 102
 103#define NUM_REGS      0x200
 104static void hb_regs_write(void *opaque, hwaddr offset,
 105                          uint64_t value, unsigned size)
 106{
 107    uint32_t *regs = opaque;
 108
 109    if (offset == 0xf00) {
 110        if (value == 1 || value == 2) {
 111            qemu_system_reset_request();
 112        } else if (value == 3) {
 113            qemu_system_shutdown_request();
 114        }
 115    }
 116
 117    regs[offset/4] = value;
 118}
 119
 120static uint64_t hb_regs_read(void *opaque, hwaddr offset,
 121                             unsigned size)
 122{
 123    uint32_t *regs = opaque;
 124    uint32_t value = regs[offset/4];
 125
 126    if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
 127        value |= 0x30000000;
 128    }
 129
 130    return value;
 131}
 132
 133static const MemoryRegionOps hb_mem_ops = {
 134    .read = hb_regs_read,
 135    .write = hb_regs_write,
 136    .endianness = DEVICE_NATIVE_ENDIAN,
 137};
 138
 139#define TYPE_HIGHBANK_REGISTERS "highbank-regs"
 140#define HIGHBANK_REGISTERS(obj) \
 141    OBJECT_CHECK(HighbankRegsState, (obj), TYPE_HIGHBANK_REGISTERS)
 142
 143typedef struct {
 144    /*< private >*/
 145    SysBusDevice parent_obj;
 146    /*< public >*/
 147
 148    MemoryRegion iomem;
 149    uint32_t regs[NUM_REGS];
 150} HighbankRegsState;
 151
 152static VMStateDescription vmstate_highbank_regs = {
 153    .name = "highbank-regs",
 154    .version_id = 0,
 155    .minimum_version_id = 0,
 156    .fields = (VMStateField[]) {
 157        VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
 158        VMSTATE_END_OF_LIST(),
 159    },
 160};
 161
 162static void highbank_regs_reset(DeviceState *dev)
 163{
 164    HighbankRegsState *s = HIGHBANK_REGISTERS(dev);
 165
 166    s->regs[0x40] = 0x05F20121;
 167    s->regs[0x41] = 0x2;
 168    s->regs[0x42] = 0x05F30121;
 169    s->regs[0x43] = 0x05F40121;
 170}
 171
 172static void highbank_regs_init(Object *obj)
 173{
 174    HighbankRegsState *s = HIGHBANK_REGISTERS(obj);
 175    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
 176
 177    memory_region_init_io(&s->iomem, obj, &hb_mem_ops, s->regs,
 178                          "highbank_regs", 0x1000);
 179    sysbus_init_mmio(dev, &s->iomem);
 180}
 181
 182static void highbank_regs_class_init(ObjectClass *klass, void *data)
 183{
 184    DeviceClass *dc = DEVICE_CLASS(klass);
 185
 186    dc->desc = "Calxeda Highbank registers";
 187    dc->vmsd = &vmstate_highbank_regs;
 188    dc->reset = highbank_regs_reset;
 189}
 190
 191static const TypeInfo highbank_regs_info = {
 192    .name          = TYPE_HIGHBANK_REGISTERS,
 193    .parent        = TYPE_SYS_BUS_DEVICE,
 194    .instance_size = sizeof(HighbankRegsState),
 195    .instance_init = highbank_regs_init,
 196    .class_init    = highbank_regs_class_init,
 197};
 198
 199static void highbank_regs_register_types(void)
 200{
 201    type_register_static(&highbank_regs_info);
 202}
 203
 204type_init(highbank_regs_register_types)
 205
 206static struct arm_boot_info highbank_binfo;
 207
 208enum cxmachines {
 209    CALXEDA_HIGHBANK,
 210    CALXEDA_MIDWAY,
 211};
 212
 213/* ram_size must be set to match the upper bound of memory in the
 214 * device tree (linux/arch/arm/boot/dts/highbank.dts), which is
 215 * normally 0xff900000 or -m 4089. When running this board on a
 216 * 32-bit host, set the reg value of memory to 0xf7ff00000 in the
 217 * device tree and pass -m 2047 to QEMU.
 218 */
 219static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
 220{
 221    ram_addr_t ram_size = machine->ram_size;
 222    const char *cpu_model = machine->cpu_model;
 223    const char *kernel_filename = machine->kernel_filename;
 224    const char *kernel_cmdline = machine->kernel_cmdline;
 225    const char *initrd_filename = machine->initrd_filename;
 226    DeviceState *dev = NULL;
 227    SysBusDevice *busdev;
 228    qemu_irq pic[128];
 229    int n;
 230    qemu_irq cpu_irq[4];
 231    qemu_irq cpu_fiq[4];
 232    MemoryRegion *sysram;
 233    MemoryRegion *dram;
 234    MemoryRegion *sysmem;
 235    char *sysboot_filename;
 236
 237    switch (machine_id) {
 238    case CALXEDA_HIGHBANK:
 239        cpu_model = "cortex-a9";
 240        break;
 241    case CALXEDA_MIDWAY:
 242        cpu_model = "cortex-a15";
 243        break;
 244    }
 245
 246    for (n = 0; n < smp_cpus; n++) {
 247        ObjectClass *oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
 248        Object *cpuobj;
 249        ARMCPU *cpu;
 250
 251        cpuobj = object_new(object_class_get_name(oc));
 252        cpu = ARM_CPU(cpuobj);
 253
 254        object_property_set_int(cpuobj, QEMU_PSCI_CONDUIT_SMC,
 255                                "psci-conduit", &error_abort);
 256
 257        if (n) {
 258            /* Secondary CPUs start in PSCI powered-down state */
 259            object_property_set_bool(cpuobj, true,
 260                                     "start-powered-off", &error_abort);
 261        }
 262
 263        if (object_property_find(cpuobj, "reset-cbar", NULL)) {
 264            object_property_set_int(cpuobj, MPCORE_PERIPHBASE,
 265                                    "reset-cbar", &error_abort);
 266        }
 267        object_property_set_bool(cpuobj, true, "realized", &error_fatal);
 268        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
 269        cpu_fiq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_FIQ);
 270    }
 271
 272    sysmem = get_system_memory();
 273    dram = g_new(MemoryRegion, 1);
 274    memory_region_allocate_system_memory(dram, NULL, "highbank.dram", ram_size);
 275    /* SDRAM at address zero.  */
 276    memory_region_add_subregion(sysmem, 0, dram);
 277
 278    sysram = g_new(MemoryRegion, 1);
 279    memory_region_init_ram(sysram, NULL, "highbank.sysram", 0x8000,
 280                           &error_fatal);
 281    memory_region_add_subregion(sysmem, 0xfff88000, sysram);
 282    if (bios_name != NULL) {
 283        sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 284        if (sysboot_filename != NULL) {
 285            if (load_image_targphys(sysboot_filename, 0xfff88000, 0x8000) < 0) {
 286                error_report("Unable to load %s", bios_name);
 287                exit(1);
 288            }
 289            g_free(sysboot_filename);
 290        } else {
 291            error_report("Unable to find %s", bios_name);
 292            exit(1);
 293        }
 294    }
 295
 296    switch (machine_id) {
 297    case CALXEDA_HIGHBANK:
 298        dev = qdev_create(NULL, "l2x0");
 299        qdev_init_nofail(dev);
 300        busdev = SYS_BUS_DEVICE(dev);
 301        sysbus_mmio_map(busdev, 0, 0xfff12000);
 302
 303        dev = qdev_create(NULL, "a9mpcore_priv");
 304        break;
 305    case CALXEDA_MIDWAY:
 306        dev = qdev_create(NULL, "a15mpcore_priv");
 307        break;
 308    }
 309    qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
 310    qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
 311    qdev_init_nofail(dev);
 312    busdev = SYS_BUS_DEVICE(dev);
 313    sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
 314    for (n = 0; n < smp_cpus; n++) {
 315        sysbus_connect_irq(busdev, n, cpu_irq[n]);
 316        sysbus_connect_irq(busdev, n + smp_cpus, cpu_fiq[n]);
 317    }
 318
 319    for (n = 0; n < 128; n++) {
 320        pic[n] = qdev_get_gpio_in(dev, n);
 321    }
 322
 323    dev = qdev_create(NULL, "sp804");
 324    qdev_prop_set_uint32(dev, "freq0", 150000000);
 325    qdev_prop_set_uint32(dev, "freq1", 150000000);
 326    qdev_init_nofail(dev);
 327    busdev = SYS_BUS_DEVICE(dev);
 328    sysbus_mmio_map(busdev, 0, 0xfff34000);
 329    sysbus_connect_irq(busdev, 0, pic[18]);
 330    pl011_create(0xfff36000, pic[20], serial_hds[0]);
 331
 332    dev = qdev_create(NULL, "highbank-regs");
 333    qdev_init_nofail(dev);
 334    busdev = SYS_BUS_DEVICE(dev);
 335    sysbus_mmio_map(busdev, 0, 0xfff3c000);
 336
 337    sysbus_create_simple("pl061", 0xfff30000, pic[14]);
 338    sysbus_create_simple("pl061", 0xfff31000, pic[15]);
 339    sysbus_create_simple("pl061", 0xfff32000, pic[16]);
 340    sysbus_create_simple("pl061", 0xfff33000, pic[17]);
 341    sysbus_create_simple("pl031", 0xfff35000, pic[19]);
 342    sysbus_create_simple("pl022", 0xfff39000, pic[23]);
 343
 344    sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
 345
 346    if (nd_table[0].used) {
 347        qemu_check_nic_model(&nd_table[0], "xgmac");
 348        dev = qdev_create(NULL, "xgmac");
 349        qdev_set_nic_properties(dev, &nd_table[0]);
 350        qdev_init_nofail(dev);
 351        sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff50000);
 352        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[77]);
 353        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[78]);
 354        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[79]);
 355
 356        qemu_check_nic_model(&nd_table[1], "xgmac");
 357        dev = qdev_create(NULL, "xgmac");
 358        qdev_set_nic_properties(dev, &nd_table[1]);
 359        qdev_init_nofail(dev);
 360        sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xfff51000);
 361        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[80]);
 362        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, pic[81]);
 363        sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, pic[82]);
 364    }
 365
 366    highbank_binfo.ram_size = ram_size;
 367    highbank_binfo.kernel_filename = kernel_filename;
 368    highbank_binfo.kernel_cmdline = kernel_cmdline;
 369    highbank_binfo.initrd_filename = initrd_filename;
 370    /* highbank requires a dtb in order to boot, and the dtb will override
 371     * the board ID. The following value is ignored, so set it to -1 to be
 372     * clear that the value is meaningless.
 373     */
 374    highbank_binfo.board_id = -1;
 375    highbank_binfo.nb_cpus = smp_cpus;
 376    highbank_binfo.loader_start = 0;
 377    highbank_binfo.write_secondary_boot = hb_write_secondary;
 378    highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary;
 379    if (!kvm_enabled()) {
 380        highbank_binfo.board_setup_addr = BOARD_SETUP_ADDR;
 381        highbank_binfo.write_board_setup = hb_write_board_setup;
 382        highbank_binfo.secure_board_setup = true;
 383    } else {
 384        error_report("WARNING: cannot load built-in Monitor support "
 385                     "if KVM is enabled. Some guests (such as Linux) "
 386                     "may not boot.");
 387    }
 388
 389    arm_load_kernel(ARM_CPU(first_cpu), &highbank_binfo);
 390}
 391
 392static void highbank_init(MachineState *machine)
 393{
 394    calxeda_init(machine, CALXEDA_HIGHBANK);
 395}
 396
 397static void midway_init(MachineState *machine)
 398{
 399    calxeda_init(machine, CALXEDA_MIDWAY);
 400}
 401
 402static void highbank_class_init(ObjectClass *oc, void *data)
 403{
 404    MachineClass *mc = MACHINE_CLASS(oc);
 405
 406    mc->desc = "Calxeda Highbank (ECX-1000)";
 407    mc->init = highbank_init;
 408    mc->block_default_type = IF_SCSI;
 409    mc->max_cpus = 4;
 410}
 411
 412static const TypeInfo highbank_type = {
 413    .name = MACHINE_TYPE_NAME("highbank"),
 414    .parent = TYPE_MACHINE,
 415    .class_init = highbank_class_init,
 416};
 417
 418static void midway_class_init(ObjectClass *oc, void *data)
 419{
 420    MachineClass *mc = MACHINE_CLASS(oc);
 421
 422    mc->desc = "Calxeda Midway (ECX-2000)";
 423    mc->init = midway_init;
 424    mc->block_default_type = IF_SCSI;
 425    mc->max_cpus = 4;
 426}
 427
 428static const TypeInfo midway_type = {
 429    .name = MACHINE_TYPE_NAME("midway"),
 430    .parent = TYPE_MACHINE,
 431    .class_init = midway_class_init,
 432};
 433
 434static void calxeda_machines_init(void)
 435{
 436    type_register_static(&highbank_type);
 437    type_register_static(&midway_type);
 438}
 439
 440type_init(calxeda_machines_init)
 441