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
  22 #define SMP_BOOT_ADDR 0xe0000000
  23
  24 typedef struct {
  25     SysBusDevice busdev;
  26     bitbang_i2c_interface *bitbang;
  27     int out;
  28     int in;
  29 } RealViewI2CState;
  30
  31 static uint32_t realview_i2c_read(void *opaque, target_phys_addr_t offset)
  32 {
  33     RealViewI2CState *s = (RealViewI2CState *)opaque;
  34
  35     if (offset == 0) {
  36         return (s->out & 1) | (s->in << 1);
  37     } else {
  38         hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);
  39         return -1;
  40     }
  41 }
  42
  43 static void realview_i2c_write(void *opaque, target_phys_addr_t offset,
  44                                uint32_t value)
  45 {
  46     RealViewI2CState *s = (RealViewI2CState *)opaque;
  47
  48     switch (offset) {
  49     case 0:
  50         s->out |= value & 3;
  51         break;
  52     case 4:
  53         s->out &= ~value;
  54         break;
  55     default:
  56         hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);
  57     }
  58     bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
  59     s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
  60 }
  61
  62 static CPUReadMemoryFunc * const realview_i2c_readfn[] = {
  63    realview_i2c_read,
  64    realview_i2c_read,
  65    realview_i2c_read
  66 };
  67
  68 static CPUWriteMemoryFunc * const realview_i2c_writefn[] = {
  69    realview_i2c_write,
  70    realview_i2c_write,
  71    realview_i2c_write
  72 };
  73
  74 static int realview_i2c_init(SysBusDevice *dev)
  75 {
  76     RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);
  77     i2c_bus *bus;
  78     int iomemtype;
  79
  80     bus = i2c_init_bus(&dev->qdev, "i2c");
  81     s->bitbang = bitbang_i2c_init(bus);
  82     iomemtype = cpu_register_io_memory(realview_i2c_readfn,
  83                                        realview_i2c_writefn, s,
  84                                        DEVICE_NATIVE_ENDIAN);
  85     sysbus_init_mmio(dev, 0x1000, iomemtype);
  86     return 0;
  87 }
  88
  89 static SysBusDeviceInfo realview_i2c_info = {
  90     .init = realview_i2c_init,
  91     .qdev.name  = "realview_i2c",
  92     .qdev.size  = sizeof(RealViewI2CState),
  93 };
  94
  95 static void realview_register_devices(void)
  96 {
  97     sysbus_register_withprop(&realview_i2c_info);
  98 }
  99
 100 /* Board init.  */
 101
 102 static struct arm_boot_info realview_binfo = {
 103     .smp_loader_start = SMP_BOOT_ADDR,
 104 };
 105
 106 /* The following two lists must be consistent.  */
 107 enum realview_board_type {
 108     BOARD_EB,
 109     BOARD_EB_MPCORE,
 110     BOARD_PB_A8,
 111     BOARD_PBX_A9,
 112 };
 113
 114 static const int realview_board_id[] = {
 115     0x33b,
 116     0x33b,
 117     0x769,
 118     0x76d
 119 };
 120
 121 static void realview_init(ram_addr_t ram_size,
 122                      const char *boot_device,
 123                      const char *kernel_filename, const char *kernel_cmdline,
 124                      const char *initrd_filename, const char *cpu_model,
 125                      enum realview_board_type board_type)
 126 {
 127     CPUState *env = NULL;
 128     ram_addr_t ram_offset;
 129     DeviceState *dev, *sysctl, *gpio2;
 130     SysBusDevice *busdev;
 131     qemu_irq *irqp;
 132     qemu_irq pic[64];
 133     qemu_irq mmc_irq[2];
 134     PCIBus *pci_bus;
 135     NICInfo *nd;
 136     i2c_bus *i2c;
 137     int n;
 138     int done_nic = 0;
 139     qemu_irq cpu_irq[4];
 140     int is_mpcore = 0;
 141     int is_pb = 0;
 142     uint32_t proc_id = 0;
 143     uint32_t sys_id;
 144     ram_addr_t low_ram_size;
 145
 146     switch (board_type) {
 147     case BOARD_EB:
 148         break;
 149     case BOARD_EB_MPCORE:
 150         is_mpcore = 1;
 151         break;
 152     case BOARD_PB_A8:
 153         is_pb = 1;
 154         break;
 155     case BOARD_PBX_A9:
 156         is_mpcore = 1;
 157         is_pb = 1;
 158         break;
 159     }
 160     for (n = 0; n < smp_cpus; n++) {
 161         env = cpu_init(cpu_model);
 162         if (!env) {
 163             fprintf(stderr, "Unable to find CPU definition\n");
 164             exit(1);
 165         }
 166         irqp = arm_pic_init_cpu(env);
 167         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
 168     }
 169     if (arm_feature(env, ARM_FEATURE_V7)) {
 170         if (is_mpcore) {
 171             proc_id = 0x0c000000;
 172         } else {
 173             proc_id = 0x0e000000;
 174         }
 175     } else if (arm_feature(env, ARM_FEATURE_V6K)) {
 176         proc_id = 0x06000000;
 177     } else if (arm_feature(env, ARM_FEATURE_V6)) {
 178         proc_id = 0x04000000;
 179     } else {
 180         proc_id = 0x02000000;
 181     }
 182
 183     if (is_pb && ram_size > 0x20000000) {
 184         /* Core tile RAM.  */
 185         low_ram_size = ram_size - 0x20000000;
 186         ram_size = 0x20000000;
 187         ram_offset = qemu_ram_alloc(NULL, "realview.lowmem", low_ram_size);
 188         cpu_register_physical_memory(0x20000000, low_ram_size,
 189                                      ram_offset | IO_MEM_RAM);
 190     }
 191
 192     ram_offset = qemu_ram_alloc(NULL, "realview.highmem", ram_size);
 193     low_ram_size = ram_size;
 194     if (low_ram_size > 0x10000000)
 195       low_ram_size = 0x10000000;
 196     /* SDRAM at address zero.  */
 197     cpu_register_physical_memory(0, low_ram_size, ram_offset | IO_MEM_RAM);
 198     if (is_pb) {
 199         /* And again at a high address.  */
 200         cpu_register_physical_memory(0x70000000, ram_size,
 201                                      ram_offset | IO_MEM_RAM);
 202     } else {
 203         ram_size = low_ram_size;
 204     }
 205
 206     sys_id = is_pb ? 0x01780500 : 0xc1400400;
 207     sysctl = qdev_create(NULL, "realview_sysctl");
 208     qdev_prop_set_uint32(sysctl, "sys_id", sys_id);
 209     qdev_init_nofail(sysctl);
 210     qdev_prop_set_uint32(sysctl, "proc_id", proc_id);
 211     sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000);
 212
 213     if (is_mpcore) {
 214         dev = qdev_create(NULL, is_pb ? "a9mpcore_priv": "realview_mpcore");
 215         qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
 216         qdev_init_nofail(dev);
 217         busdev = sysbus_from_qdev(dev);
 218         if (is_pb) {
 219             realview_binfo.smp_priv_base = 0x1f000000;
 220         } else {
 221             realview_binfo.smp_priv_base = 0x10100000;
 222         }
 223         sysbus_mmio_map(busdev, 0, realview_binfo.smp_priv_base);
 224         for (n = 0; n < smp_cpus; n++) {
 225             sysbus_connect_irq(busdev, n, cpu_irq[n]);
 226         }
 227     } else {
 228         uint32_t gic_addr = is_pb ? 0x1e000000 : 0x10040000;
 229         /* For now just create the nIRQ GIC, and ignore the others.  */
 230         dev = sysbus_create_simple("realview_gic", gic_addr, cpu_irq[0]);
 231     }
 232     for (n = 0; n < 64; n++) {
 233         pic[n] = qdev_get_gpio_in(dev, n);
 234     }
 235
 236     sysbus_create_simple("pl050_keyboard", 0x10006000, pic[20]);
 237     sysbus_create_simple("pl050_mouse", 0x10007000, pic[21]);
 238
 239     sysbus_create_simple("pl011", 0x10009000, pic[12]);
 240     sysbus_create_simple("pl011", 0x1000a000, pic[13]);
 241     sysbus_create_simple("pl011", 0x1000b000, pic[14]);
 242     sysbus_create_simple("pl011", 0x1000c000, pic[15]);
 243
 244     /* DMA controller is optional, apparently.  */
 245     sysbus_create_simple("pl081", 0x10030000, pic[24]);
 246
 247     sysbus_create_simple("sp804", 0x10011000, pic[4]);
 248     sysbus_create_simple("sp804", 0x10012000, pic[5]);
 249
 250     sysbus_create_simple("pl061", 0x10013000, pic[6]);
 251     sysbus_create_simple("pl061", 0x10014000, pic[7]);
 252     gpio2 = sysbus_create_simple("pl061", 0x10015000, pic[8]);
 253
 254     sysbus_create_simple("pl111", 0x10020000, pic[23]);
 255
 256     dev = sysbus_create_varargs("pl181", 0x10005000, pic[17], pic[18], NULL);
 257     /* Wire up MMC card detect and read-only signals. These have
 258      * to go to both the PL061 GPIO and the sysctl register.
 259      * Note that the PL181 orders these lines (readonly,inserted)
 260      * and the PL061 has them the other way about. Also the card
 261      * detect line is inverted.
 262      */
 263     mmc_irq[0] = qemu_irq_split(
 264         qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT),
 265         qdev_get_gpio_in(gpio2, 1));
 266     mmc_irq[1] = qemu_irq_split(
 267         qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN),
 268         qemu_irq_invert(qdev_get_gpio_in(gpio2, 0)));
 269     qdev_connect_gpio_out(dev, 0, mmc_irq[0]);
 270     qdev_connect_gpio_out(dev, 1, mmc_irq[1]);
 271
 272     sysbus_create_simple("pl031", 0x10017000, pic[10]);
 273
 274     if (!is_pb) {
 275         dev = sysbus_create_varargs("realview_pci", 0x60000000,
 276                                     pic[48], pic[49], pic[50], pic[51], NULL);
 277         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
 278         if (usb_enabled) {
 279             usb_ohci_init_pci(pci_bus, -1);
 280         }
 281         n = drive_get_max_bus(IF_SCSI);
 282         while (n >= 0) {
 283             pci_create_simple(pci_bus, -1, "lsi53c895a");
 284             n--;
 285         }
 286     }
 287     for(n = 0; n < nb_nics; n++) {
 288         nd = &nd_table[n];
 289
 290         if (!done_nic && (!nd->model ||
 291                     strcmp(nd->model, is_pb ? "lan9118" : "smc91c111") == 0)) {
 292             if (is_pb) {
 293                 lan9118_init(nd, 0x4e000000, pic[28]);
 294             } else {
 295                 smc91c111_init(nd, 0x4e000000, pic[28]);
 296             }
 297             done_nic = 1;
 298         } else {
 299             pci_nic_init_nofail(nd, "rtl8139", NULL);
 300         }
 301     }
 302
 303     dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);
 304     i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
 305     i2c_create_slave(i2c, "ds1338", 0x68);
 306
 307     /* Memory map for RealView Emulation Baseboard:  */
 308     /* 0x10000000 System registers.  */
 309     /*  0x10001000 System controller.  */
 310     /* 0x10002000 Two-Wire Serial Bus.  */
 311     /* 0x10003000 Reserved.  */
 312     /*  0x10004000 AACI.  */
 313     /*  0x10005000 MCI.  */
 314     /* 0x10006000 KMI0.  */
 315     /* 0x10007000 KMI1.  */
 316     /*  0x10008000 Character LCD. (EB) */
 317     /* 0x10009000 UART0.  */
 318     /* 0x1000a000 UART1.  */
 319     /* 0x1000b000 UART2.  */
 320     /* 0x1000c000 UART3.  */
 321     /*  0x1000d000 SSPI.  */
 322     /*  0x1000e000 SCI.  */
 323     /* 0x1000f000 Reserved.  */
 324     /*  0x10010000 Watchdog.  */
 325     /* 0x10011000 Timer 0+1.  */
 326     /* 0x10012000 Timer 2+3.  */
 327     /*  0x10013000 GPIO 0.  */
 328     /*  0x10014000 GPIO 1.  */
 329     /*  0x10015000 GPIO 2.  */
 330     /*  0x10002000 Two-Wire Serial Bus - DVI. (PB) */
 331     /* 0x10017000 RTC.  */
 332     /*  0x10018000 DMC.  */
 333     /*  0x10019000 PCI controller config.  */
 334     /*  0x10020000 CLCD.  */
 335     /* 0x10030000 DMA Controller.  */
 336     /* 0x10040000 GIC1. (EB) */
 337     /*  0x10050000 GIC2. (EB) */
 338     /*  0x10060000 GIC3. (EB) */
 339     /*  0x10070000 GIC4. (EB) */
 340     /*  0x10080000 SMC.  */
 341     /* 0x1e000000 GIC1. (PB) */
 342     /*  0x1e001000 GIC2. (PB) */
 343     /*  0x1e002000 GIC3. (PB) */
 344     /*  0x1e003000 GIC4. (PB) */
 345     /*  0x40000000 NOR flash.  */
 346     /*  0x44000000 DoC flash.  */
 347     /*  0x48000000 SRAM.  */
 348     /*  0x4c000000 Configuration flash.  */
 349     /* 0x4e000000 Ethernet.  */
 350     /*  0x4f000000 USB.  */
 351     /*  0x50000000 PISMO.  */
 352     /*  0x54000000 PISMO.  */
 353     /*  0x58000000 PISMO.  */
 354     /*  0x5c000000 PISMO.  */
 355     /* 0x60000000 PCI.  */
 356     /* 0x61000000 PCI Self Config.  */
 357     /* 0x62000000 PCI Config.  */
 358     /* 0x63000000 PCI IO.  */
 359     /* 0x64000000 PCI mem 0.  */
 360     /* 0x68000000 PCI mem 1.  */
 361     /* 0x6c000000 PCI mem 2.  */
 362
 363     /* ??? Hack to map an additional page of ram for the secondary CPU
 364        startup code.  I guess this works on real hardware because the
 365        BootROM happens to be in ROM/flash or in memory that isn't clobbered
 366        until after Linux boots the secondary CPUs.  */
 367     ram_offset = qemu_ram_alloc(NULL, "realview.hack", 0x1000);
 368     cpu_register_physical_memory(SMP_BOOT_ADDR, 0x1000,
 369                                  ram_offset | IO_MEM_RAM);
 370
 371     realview_binfo.ram_size = ram_size;
 372     realview_binfo.kernel_filename = kernel_filename;
 373     realview_binfo.kernel_cmdline = kernel_cmdline;
 374     realview_binfo.initrd_filename = initrd_filename;
 375     realview_binfo.nb_cpus = smp_cpus;
 376     realview_binfo.board_id = realview_board_id[board_type];
 377     realview_binfo.loader_start = (board_type == BOARD_PB_A8 ? 0x70000000 : 0);
 378     arm_load_kernel(first_cpu, &realview_binfo);
 379 }
 380
 381 static void realview_eb_init(ram_addr_t ram_size,
 382                      const char *boot_device,
 383                      const char *kernel_filename, const char *kernel_cmdline,
 384                      const char *initrd_filename, const char *cpu_model)
 385 {
 386     if (!cpu_model) {
 387         cpu_model = "arm926";
 388     }
 389     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 390                   initrd_filename, cpu_model, BOARD_EB);
 391 }
 392
 393 static void realview_eb_mpcore_init(ram_addr_t ram_size,
 394                      const char *boot_device,
 395                      const char *kernel_filename, const char *kernel_cmdline,
 396                      const char *initrd_filename, const char *cpu_model)
 397 {
 398     if (!cpu_model) {
 399         cpu_model = "arm11mpcore";
 400     }
 401     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 402                   initrd_filename, cpu_model, BOARD_EB_MPCORE);
 403 }
 404
 405 static void realview_pb_a8_init(ram_addr_t ram_size,
 406                      const char *boot_device,
 407                      const char *kernel_filename, const char *kernel_cmdline,
 408                      const char *initrd_filename, const char *cpu_model)
 409 {
 410     if (!cpu_model) {
 411         cpu_model = "cortex-a8";
 412     }
 413     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 414                   initrd_filename, cpu_model, BOARD_PB_A8);
 415 }
 416
 417 static void realview_pbx_a9_init(ram_addr_t ram_size,
 418                      const char *boot_device,
 419                      const char *kernel_filename, const char *kernel_cmdline,
 420                      const char *initrd_filename, const char *cpu_model)
 421 {
 422     if (!cpu_model) {
 423         cpu_model = "cortex-a9";
 424     }
 425     realview_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
 426                   initrd_filename, cpu_model, BOARD_PBX_A9);
 427 }
 428
 429 static QEMUMachine realview_eb_machine = {
 430     .name = "realview-eb",
 431     .desc = "ARM RealView Emulation Baseboard (ARM926EJ-S)",
 432     .init = realview_eb_init,
 433     .use_scsi = 1,
 434 };
 435
 436 static QEMUMachine realview_eb_mpcore_machine = {
 437     .name = "realview-eb-mpcore",
 438     .desc = "ARM RealView Emulation Baseboard (ARM11MPCore)",
 439     .init = realview_eb_mpcore_init,
 440     .use_scsi = 1,
 441     .max_cpus = 4,
 442 };
 443
 444 static QEMUMachine realview_pb_a8_machine = {
 445     .name = "realview-pb-a8",
 446     .desc = "ARM RealView Platform Baseboard for Cortex-A8",
 447     .init = realview_pb_a8_init,
 448 };
 449
 450 static QEMUMachine realview_pbx_a9_machine = {
 451     .name = "realview-pbx-a9",
 452     .desc = "ARM RealView Platform Baseboard Explore for Cortex-A9",
 453     .init = realview_pbx_a9_init,
 454     .use_scsi = 1,
 455     .max_cpus = 4,
 456 };
 457
 458 static void realview_machine_init(void)
 459 {
 460     qemu_register_machine(&realview_eb_machine);
 461     qemu_register_machine(&realview_eb_mpcore_machine);
 462     qemu_register_machine(&realview_pb_a8_machine);
 463     qemu_register_machine(&realview_pbx_a9_machine);
 464 }
 465
 466 machine_init(realview_machine_init);
 467 device_init(realview_register_devices)