hw/realview.c

   1 /*
   2  * ARM RealView Baseboard System emulation.
   3  *
   4  * Copyright (c) 2006-2007 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the GPL.
   8  */
   9
  10 #include "sysbus.h"
  11 #include "arm-misc.h"
  12 #include "primecell.h"
  13 #include "devices.h"
  14 #include "pci.h"
  15 #include "usb-ohci.h"
  16 #include "net.h"
  17 #include "sysemu.h"
  18 #include "boards.h"
  19 #include "bitbang_i2c.h"
  20 #include "blockdev.h"
  21 #include "exec-memory.h"
  22
  23 #define SMP_BOOT_ADDR 0xe0000000
  24 #define SMP_BOOTREG_ADDR 0x10000030
  25
  26 typedef struct {
  27     SysBusDevice busdev;
  28     MemoryRegion iomem;
  29     bitbang_i2c_interface *bitbang;
  30     int out;
  31     int in;
  32 } RealViewI2CState;
  33
  34 static uint64_t realview_i2c_read(void *opaque, target_phys_addr_t offset,
  35                                   unsigned size)
  36 {
  37     RealViewI2CState *s = (RealViewI2CState *)opaque;
  38
  39     if (offset == 0) {
  40         return (s->out & 1) | (s->in << 1);
  41     } else {
  42         hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);
  43         return -1;
  44     }
  45 }
  46
  47 static void realview_i2c_write(void *opaque, target_phys_addr_t offset,
  48                                uint64_t value, unsigned size)
  49 {
  50     RealViewI2CState *s = (RealViewI2CState *)opaque;
  51
  52     switch (offset) {
  53     case 0:
  54         s->out |= value & 3;
  55         break;
  56     case 4:
  57         s->out &= ~value;
  58         break;
  59     default:
  60         hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);
  61     }
  62     bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
  63     s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
  64 }
  65
  66 static const MemoryRegionOps realview_i2c_ops = {
  67     .read = realview_i2c_read,
  68     .write = realview_i2c_write,
  69     .endianness = DEVICE_NATIVE_ENDIAN,
  70 };
  71
  72 static int realview_i2c_init(SysBusDevice *dev)
  73 {
  74     RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);
  75     i2c_bus *bus;
  76
  77     bus = i2c_init_bus(&dev->qdev, "i2c");
  78     s->bitbang = bitbang_i2c_init(bus);
  79     memory_region_init_io(&s->iomem, &realview_i2c_ops, s,
  80                           "realview-i2c", 0x1000);
  81     sysbus_init_mmio(dev, &s->iomem);
  82     return 0;
  83 }
  84
  85 static SysBusDeviceInfo realview_i2c_info = {
  86     .init = realview_i2c_init,
  87     .qdev.name  = "realview_i2c",
  88     .qdev.size  = sizeof(RealViewI2CState),
  89 };
  90
  91 static void realview_register_devices(void)
  92 {
  93     sysbus_register_withprop(&realview_i2c_info);
  94 }
  95
  96 /* Board init.  */
  97
  98 static struct arm_boot_info realview_binfo = {
  99     .smp_loader_start = SMP_BOOT_ADDR,
 100     .smp_bootreg_addr = SMP_BOOTREG_ADDR,
 101 };
 102
 103 /* The following two lists must be consistent.  */
 104 enum realview_board_type {
 105     BOARD_EB,
 106     BOARD_EB_MPCORE,
 107     BOARD_PB_A8,
 108     BOARD_PBX_A9,
 109 };
 110
 111 static const int realview_board_id[] = {
 112     0x33b,
 113     0x33b,
 114     0x769,
 115     0x76d
 116 };
 117
 118 static void realview_init(ram_addr_t ram_size,
 119                      const char *boot_device,
 120                      const char *kernel_filename, const char *kernel_cmdline,
 121                      const char *initrd_filename, const char *cpu_model,
 122                      enum realview_board_type board_type)
 123 {
 124     CPUState *env = NULL;
 125     MemoryRegion *sysmem = get_system_memory();
 126     MemoryRegion *ram_lo = g_new(MemoryRegion, 1);
 127     MemoryRegion *ram_hi = g_new(MemoryRegion, 1);
 128     MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
 129     MemoryRegion *ram_hack = g_new(MemoryRegion, 1);
 130     DeviceState *dev, *sysctl, *gpio2, *pl041;
 131     SysBusDevice *busdev;
 132     qemu_irq *irqp;
 133     qemu_irq pic[64];
 134     qemu_irq mmc_irq[2];
 135     PCIBus *pci_bus;
 136     NICInfo *nd;
 137     i2c_bus *i2c;
 138     int n;
 139     int done_nic = 0;
 140     qemu_irq cpu_irq[4];
 141     int is_mpcore = 0;
 142     int is_pb = 0;
 143     uint32_t proc_id = 0;
 144     uint32_t sys_id;
 145     ram_addr_t low_ram_size;
 146
 147     switch (board_type) {
 148     case BOARD_EB:
 149         break;
 150     case BOARD_EB_MPCORE:
 151         is_mpcore = 1;
 152         break;
 153     case BOARD_PB_A8:
 154         is_pb = 1;
 155         break;
 156     case BOARD_PBX_A9:
 157         is_mpcore = 1;
 158         is_pb = 1;
 159         break;
 160     }
 161     for (n = 0; n < smp_cpus; n++) {
 162         env = cpu_init(cpu_model);
 163         if (!env) {
 164             fprintf(stderr, "Unable to find CPU definition\n");
 165             exit(1);
 166         }
 167         irqp = arm_pic_init_cpu(env);
 168         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
 169     }
 170     if (arm_feature(env, ARM_FEATURE_V7)) {
 171         if (is_mpcore) {
 172             proc_id = 0x0c000000;
 173         } else {
 174             proc_id = 0x0e000000;
 175         }
 176     } else if (arm_feature(env, ARM_FEATURE_V6K)) {
 177         proc_id = 0x06000000;
 178     } else if (arm_feature(env, ARM_FEATURE_V6)) {
 179         proc_id = 0x04000000;
 180     } else {
 181         proc_id = 0x02000000;
 182     }
 183
 184     if (is_pb && ram_size > 0x20000000) {
 185         /* Core tile RAM.  */
 186         low_ram_size = ram_size - 0x20000000;
 187         ram_size = 0x20000000;
 188         memory_region_init_ram(ram_lo, "realview.lowmem", low_ram_size);
 189         vmstate_register_ram_global(ram_lo);
 190         memory_region_add_subregion(sysmem, 0x20000000, ram_lo);
 191     }
 192
 193     memory_region_init_ram(ram_hi, "realview.highmem", ram_size);
 194     vmstate_register_ram_global(ram_hi);
 195     low_ram_size = ram_size;
 196     if (low_ram_size > 0x10000000)
 197       low_ram_size = 0x10000000;
 198     /* SDRAM at address zero.  */
 199     memory_region_init_alias(ram_alias, "realview.alias",
 200                              ram_hi, 0, low_ram_size);
 201     memory_region_add_subregion(sysmem, 0, ram_alias);
 202     if (is_pb) {
 203         /* And again at a high address.  */
 204         memory_region_add_subregion(sysmem, 0x70000000, ram_hi);
 205     } else {
 206         ram_size = low_ram_size;
 207     }
 208
 209     sys_id = is_pb ? 0x01780500 : 0xc1400400;
 210     sysctl = qdev_create(NULL, "realview_sysctl");
 211     qdev_prop_set_uint32(sysctl, "sys_id", sys_id);
 212     qdev_init_nofail(sysctl);
 213     qdev_prop_set_uint32(sysctl, "proc_id", proc_id);
 214     sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000);
 215
 216     if (is_mpcore) {
 217         dev = qdev_create(NULL, is_pb ? "a9mpcore_priv": "realview_mpcore");
 218         qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
 219         qdev_init_nofail(dev);
 220         busdev = sysbus_from_qdev(dev);
 221         if (is_pb) {
 222             realview_binfo.smp_priv_base = 0x1f000000;
 223         } else {
 224             realview_binfo.smp_priv_base = 0x10100000;
 225         }
 226         sysbus_mmio_map(busdev, 0, realview_binfo.smp_priv_base);
 227         for (n = 0; n < smp_cpus; n++) {
 228             sysbus_connect_irq(busdev, n, cpu_irq[n]);
 229         }
 230         sysbus_create_varargs("l2x0", realview_binfo.smp_priv_base + 0x2000,
 231                               NULL);
 232     } else {
 233         uint32_t gic_addr = is_pb ? 0x1e000000 : 0x10040000;
 234         /* For now just create the nIRQ GIC, and ignore the others.  */
 235         dev = sysbus_create_simple("realview_gic", gic_addr, cpu_irq[0]);
 236     }
 237     for (n = 0; n < 64; n++) {
 238         pic[n] = qdev_get_gpio_in(dev, n);
 239     }
 240
 241     pl041 = qdev_create(NULL, "pl041");
 242     qdev_prop_set_uint32(pl041, "nc_fifo_depth", 512);
 243     qdev_init_nofail(pl041);
 244     sysbus_mmio_map(sysbus_from_qdev(pl041), 0, 0x10004000);
 245     sysbus_connect_irq(sysbus_from_qdev(pl041), 0, pic[19]);
 246
 247     sysbus_create_simple("pl050_keyboard", 0x10006000, pic[20]);
 248     sysbus_create_simple("pl050_mouse", 0x10007000, pic[21]);
 249
 250     sysbus_create_simple("pl011", 0x10009000, pic[12]);
 251     sysbus_create_simple("pl011", 0x1000a000, pic[13]);
 252     sysbus_create_simple("pl011", 0x1000b000, pic[14]);
 253     sysbus_create_simple("pl011", 0x1000c000, pic[15]);
 254
 255     /* DMA controller is optional, apparently.  */
 256     sysbus_create_simple("pl081", 0x10030000, pic[24]);
 257
 258     sysbus_create_simple("sp804", 0x10011000, pic[4]);
 259     sysbus_create_simple("sp804", 0x10012000, pic[5]);
 260
 261     sysbus_create_simple("pl061", 0x10013000, pic[6]);
 262     sysbus_create_simple("pl061", 0x10014000, pic[7]);
 263     gpio2 = sysbus_create_simple("pl061", 0x10015000, pic[8]);
 264
 265     sysbus_create_simple("pl111", 0x10020000, pic[23]);
 266
 267     dev = sysbus_create_varargs("pl181", 0x10005000, pic[17], pic[18], NULL);
 268     /* Wire up MMC card detect and read-only signals. These have
 269      * to go to both the PL061 GPIO and the sysctl register.
 270      * Note that the PL181 orders these lines (readonly,inserted)
 271      * and the PL061 has them the other way about. Also the card
 272      * detect line is inverted.
 273      */
 274     mmc_irq[0] = qemu_irq_split(
 275         qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT),
 276         qdev_get_gpio_in(gpio2, 1));
 277     mmc_irq[1] = qemu_irq_split(
 278         qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN),
 279         qemu_irq_invert(qdev_get_gpio_in(gpio2, 0)));
 280     qdev_connect_gpio_out(dev, 0, mmc_irq[0]);
 281     qdev_connect_gpio_out(dev, 1, mmc_irq[1]);
 282
 283     sysbus_create_simple("pl031", 0x10017000, pic[10]);
 284
 285     if (!is_pb) {
 286         dev = qdev_create(NULL, "realview_pci");
 287         busdev = sysbus_from_qdev(dev);
 288         qdev_init_nofail(dev);
 289         sysbus_mmio_map(busdev, 0, 0x61000000); /* PCI self-config */
 290         sysbus_mmio_map(busdev, 1, 0x62000000); /* PCI config */
 291         sysbus_mmio_map(busdev, 2, 0x63000000); /* PCI I/O */
 292         sysbus_connect_irq(busdev, 0, pic[48]);
 293         sysbus_connect_irq(busdev, 1, pic[49]);
 294         sysbus_connect_irq(busdev, 2, pic[50]);
 295         sysbus_connect_irq(busdev, 3, pic[51]);
 296         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
 297         if (usb_enabled) {
 298             usb_ohci_init_pci(pci_bus, -1);
 299         }
 300         n = drive_get_max_bus(IF_SCSI);
 301         while (n >= 0) {
 302             pci_create_simple(pci_bus, -1, "lsi53c895a");
 303             n--;
 304         }
 305     }
 306     for(n = 0; n < nb_nics; n++) {
 307         nd = &nd_table[n];
 308
 309         if (!done_nic && (!nd->model ||
 310                     strcmp(nd->model, is_pb ? "lan9118" : "smc91c111") == 0)) {
 311             if (is_pb) {
 312                 lan9118_init(nd, 0x4e000000, pic[28]);
 313             } else {
 314                 smc91c111_init(nd, 0x4e000000, pic[28]);
 315             }
 316             done_nic = 1;
 317         } else {
 318             pci_nic_init_nofail(nd, "rtl8139", NULL);
 319         }
 320     }
 321
 322     dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);
 323     i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
 324     i2c_create_slave(i2c, "ds1338", 0x68);
 325
 326     /* Memory map for RealView Emulation Baseboard:  */
 327     /* 0x10000000 System registers.  */
 328     /*  0x10001000 System controller.  */
 329     /* 0x10002000 Two-Wire Serial Bus.  */
 330     /* 0x10003000 Reserved.  */
 331     /*  0x10004000 AACI.  */
 332     /*  0x10005000 MCI.  */
 333     /* 0x10006000 KMI0.  */
 334     /* 0x10007000 KMI1.  */
 335     /*  0x10008000 Character LCD. (EB) */
 336     /* 0x10009000 UART0.  */
 337     /* 0x1000a000 UART1.  */
 338     /* 0x1000b000 UART2.  */
 339     /* 0x1000c000 UART3.  */
 340     /*  0x1000d000 SSPI.  */
 341     /*  0x1000e000 SCI.  */
 342     /* 0x1000f000 Reserved.  */
 343     /*  0x10010000 Watchdog.  */
 344     /* 0x10011000 Timer 0+1.  */
 345     /* 0x10012000 Timer 2+3.  */
 346     /*  0x10013000 GPIO 0.  */
 347     /*  0x10014000 GPIO 1.  */
 348     /*  0x10015000 GPIO 2.  */
 349     /*  0x10002000 Two-Wire Serial Bus - DVI. (PB) */
 350     /* 0x10017000 RTC.  */
 351     /*  0x10018000 DMC.  */
 352     /*  0x10019000 PCI controller config.  */
 353     /*  0x10020000 CLCD.  */
 354     /* 0x10030000 DMA Controller.  */
 355     /* 0x10040000 GIC1. (EB) */
 356     /*  0x10050000 GIC2. (EB) */
 357     /*  0x10060000 GIC3. (EB) */
 358     /*  0x10070000 GIC4. (EB) */
 359     /*  0x10080000 SMC.  */
 360     /* 0x1e000000 GIC1. (PB) */
 361     /*  0x1e001000 GIC2. (PB) */
 362     /*  0x1e002000 GIC3. (PB) */
 363     /*  0x1e003000 GIC4. (PB) */
 364     /*  0x40000000 NOR flash.  */
 365     /*  0x44000000 DoC flash.  */
 366     /*  0x48000000 SRAM.  */
 367     /*  0x4c000000 Configuration flash.  */
 368     /* 0x4e000000 Ethernet.  */
 369     /*  0x4f000000 USB.  */
 370     /*  0x50000000 PISMO.  */
 371     /*  0x54000000 PISMO.  */
 372     /*  0x58000000 PISMO.  */
 373     /*  0x5c000000 PISMO.  */
 374     /* 0x60000000 PCI.  */
 375     /* 0x61000000 PCI Self Config.  */
 376     /* 0x62000000 PCI Config.  */
 377     /* 0x63000000 PCI IO.  */
 378     /* 0x64000000 PCI mem 0.  */
 379     /* 0x68000000 PCI mem 1.  */
 380     /* 0x6c000000 PCI mem 2.  */
 381
 382     /* ??? Hack to map an additional page of ram for the secondary CPU
 383        startup code.  I guess this works on real hardware because the
 384        BootROM happens to be in ROM/flash or in memory that isn't clobbered
 385        until after Linux boots the secondary CPUs.  */
 386     memory_region_init_ram(ram_hack, "realview.hack", 0x1000);
 387     vmstate_register_ram_global(ram_hack);
 388     memory_region_add_subregion(sysmem, SMP_BOOT_ADDR, ram_hack);
 389
 390     realview_binfo.ram_size = ram_size;
 391     realview_binfo.kernel_filename = kernel_filename;
 392     realview_binfo.kernel_cmdline = kernel_cmdline;
 393     realview_binfo.initrd_filename = initrd_filename;
 394     realview_binfo.nb_cpus = smp_cpus;
 395     realview_binfo.board_id = realview_board_id[board_type];
 396     realview_binfo.loader_start = (board_type == BOARD_PB_A8 ? 0x70000000 : 0);
 397     arm_load_kernel(first_cpu, &realview_binfo);
 398 }
 399
 400 static void realview_eb_init(ram_addr_t ram_size,
 401                      const char *boot_device,
 402                      const char *kernel_filename, const char *kernel_cmdline,
 403                      const char *initrd_filename, const char *cpu_model)
 404 {
 405     if (!cpu_model) {
 406         cpu_model = "arm926";
 407     }
 408     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 409                   initrd_filename, cpu_model, BOARD_EB);
 410 }
 411
 412 static void realview_eb_mpcore_init(ram_addr_t ram_size,
 413                      const char *boot_device,
 414                      const char *kernel_filename, const char *kernel_cmdline,
 415                      const char *initrd_filename, const char *cpu_model)
 416 {
 417     if (!cpu_model) {
 418         cpu_model = "arm11mpcore";
 419     }
 420     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 421                   initrd_filename, cpu_model, BOARD_EB_MPCORE);
 422 }
 423
 424 static void realview_pb_a8_init(ram_addr_t ram_size,
 425                      const char *boot_device,
 426                      const char *kernel_filename, const char *kernel_cmdline,
 427                      const char *initrd_filename, const char *cpu_model)
 428 {
 429     if (!cpu_model) {
 430         cpu_model = "cortex-a8";
 431     }
 432     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 433                   initrd_filename, cpu_model, BOARD_PB_A8);
 434 }
 435
 436 static void realview_pbx_a9_init(ram_addr_t ram_size,
 437                      const char *boot_device,
 438                      const char *kernel_filename, const char *kernel_cmdline,
 439                      const char *initrd_filename, const char *cpu_model)
 440 {
 441     if (!cpu_model) {
 442         cpu_model = "cortex-a9";
 443     }
 444     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 445                   initrd_filename, cpu_model, BOARD_PBX_A9);
 446 }
 447
 448 static QEMUMachine realview_eb_machine = {
 449     .name = "realview-eb",
 450     .desc = "ARM RealView Emulation Baseboard (ARM926EJ-S)",
 451     .init = realview_eb_init,
 452     .use_scsi = 1,
 453 };
 454
 455 static QEMUMachine realview_eb_mpcore_machine = {
 456     .name = "realview-eb-mpcore",
 457     .desc = "ARM RealView Emulation Baseboard (ARM11MPCore)",
 458     .init = realview_eb_mpcore_init,
 459     .use_scsi = 1,
 460     .max_cpus = 4,
 461 };
 462
 463 static QEMUMachine realview_pb_a8_machine = {
 464     .name = "realview-pb-a8",
 465     .desc = "ARM RealView Platform Baseboard for Cortex-A8",
 466     .init = realview_pb_a8_init,
 467 };
 468
 469 static QEMUMachine realview_pbx_a9_machine = {
 470     .name = "realview-pbx-a9",
 471     .desc = "ARM RealView Platform Baseboard Explore for Cortex-A9",
 472     .init = realview_pbx_a9_init,
 473     .use_scsi = 1,
 474     .max_cpus = 4,
 475 };
 476
 477 static void realview_machine_init(void)
 478 {
 479     qemu_register_machine(&realview_eb_machine);
 480     qemu_register_machine(&realview_eb_mpcore_machine);
 481     qemu_register_machine(&realview_pb_a8_machine);
 482     qemu_register_machine(&realview_pbx_a9_machine);
 483 }
 484
 485 machine_init(realview_machine_init);
 486 device_init(realview_register_devices)