hw/ppc/prep.c

   1 /*
   2  * QEMU PPC PREP hardware System Emulator
   3  *
   4  * Copyright (c) 2003-2007 Jocelyn Mayer
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw/hw.h"
  25 #include "hw/timer/m48t59.h"
  26 #include "hw/i386/pc.h"
  27 #include "hw/char/serial.h"
  28 #include "hw/block/fdc.h"
  29 #include "net/net.h"
  30 #include "sysemu/sysemu.h"
  31 #include "hw/isa/isa.h"
  32 #include "hw/pci/pci.h"
  33 #include "hw/pci/pci_host.h"
  34 #include "hw/ppc/ppc.h"
  35 #include "hw/boards.h"
  36 #include "qemu/log.h"
  37 #include "hw/ide.h"
  38 #include "hw/loader.h"
  39 #include "hw/timer/mc146818rtc.h"
  40 #include "hw/isa/pc87312.h"
  41 #include "sysemu/blockdev.h"
  42 #include "sysemu/arch_init.h"
  43 #include "sysemu/qtest.h"
  44 #include "exec/address-spaces.h"
  45 #include "elf.h"
  46
  47 //#define HARD_DEBUG_PPC_IO
  48 //#define DEBUG_PPC_IO
  49
  50 /* SMP is not enabled, for now */
  51 #define MAX_CPUS 1
  52
  53 #define MAX_IDE_BUS 2
  54
  55 #define BIOS_SIZE (1024 * 1024)
  56 #define BIOS_FILENAME "ppc_rom.bin"
  57 #define KERNEL_LOAD_ADDR 0x01000000
  58 #define INITRD_LOAD_ADDR 0x01800000
  59
  60 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
  61 #define DEBUG_PPC_IO
  62 #endif
  63
  64 #if defined (HARD_DEBUG_PPC_IO)
  65 #define PPC_IO_DPRINTF(fmt, ...)                         \
  66 do {                                                     \
  67     if (qemu_loglevel_mask(CPU_LOG_IOPORT)) {            \
  68         qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
  69     } else {                                             \
  70         printf("%s : " fmt, __func__ , ## __VA_ARGS__);  \
  71     }                                                    \
  72 } while (0)
  73 #elif defined (DEBUG_PPC_IO)
  74 #define PPC_IO_DPRINTF(fmt, ...) \
  75 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
  76 #else
  77 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
  78 #endif
  79
  80 /* Constants for devices init */
  81 static const int ide_iobase[2] = { 0x1f0, 0x170 };
  82 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
  83 static const int ide_irq[2] = { 13, 13 };
  84
  85 #define NE2000_NB_MAX 6
  86
  87 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
  88 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
  89
  90 /* ISA IO ports bridge */
  91 #define PPC_IO_BASE 0x80000000
  92
  93 /* PowerPC control and status registers */
  94 #if 0 // Not used
  95 static struct {
  96     /* IDs */
  97     uint32_t veni_devi;
  98     uint32_t revi;
  99     /* Control and status */
 100     uint32_t gcsr;
 101     uint32_t xcfr;
 102     uint32_t ct32;
 103     uint32_t mcsr;
 104     /* General purpose registers */
 105     uint32_t gprg[6];
 106     /* Exceptions */
 107     uint32_t feen;
 108     uint32_t fest;
 109     uint32_t fema;
 110     uint32_t fecl;
 111     uint32_t eeen;
 112     uint32_t eest;
 113     uint32_t eecl;
 114     uint32_t eeint;
 115     uint32_t eemck0;
 116     uint32_t eemck1;
 117     /* Error diagnostic */
 118 } XCSR;
 119
 120 static void PPC_XCSR_writeb (void *opaque,
 121                              hwaddr addr, uint32_t value)
 122 {
 123     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 124            value);
 125 }
 126
 127 static void PPC_XCSR_writew (void *opaque,
 128                              hwaddr addr, uint32_t value)
 129 {
 130     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 131            value);
 132 }
 133
 134 static void PPC_XCSR_writel (void *opaque,
 135                              hwaddr addr, uint32_t value)
 136 {
 137     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 138            value);
 139 }
 140
 141 static uint32_t PPC_XCSR_readb (void *opaque, hwaddr addr)
 142 {
 143     uint32_t retval = 0;
 144
 145     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 146            retval);
 147
 148     return retval;
 149 }
 150
 151 static uint32_t PPC_XCSR_readw (void *opaque, hwaddr addr)
 152 {
 153     uint32_t retval = 0;
 154
 155     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 156            retval);
 157
 158     return retval;
 159 }
 160
 161 static uint32_t PPC_XCSR_readl (void *opaque, hwaddr addr)
 162 {
 163     uint32_t retval = 0;
 164
 165     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 166            retval);
 167
 168     return retval;
 169 }
 170
 171 static const MemoryRegionOps PPC_XCSR_ops = {
 172     .old_mmio = {
 173         .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, },
 174         .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, },
 175     },
 176     .endianness = DEVICE_LITTLE_ENDIAN,
 177 };
 178
 179 #endif
 180
 181 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
 182 typedef struct sysctrl_t {
 183     qemu_irq reset_irq;
 184     M48t59State *nvram;
 185     uint8_t state;
 186     uint8_t syscontrol;
 187     int contiguous_map;
 188     qemu_irq contiguous_map_irq;
 189     int endian;
 190 } sysctrl_t;
 191
 192 enum {
 193     STATE_HARDFILE = 0x01,
 194 };
 195
 196 static sysctrl_t *sysctrl;
 197
 198 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
 199 {
 200     sysctrl_t *sysctrl = opaque;
 201
 202     PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
 203                    addr - PPC_IO_BASE, val);
 204     switch (addr) {
 205     case 0x0092:
 206         /* Special port 92 */
 207         /* Check soft reset asked */
 208         if (val & 0x01) {
 209             qemu_irq_raise(sysctrl->reset_irq);
 210         } else {
 211             qemu_irq_lower(sysctrl->reset_irq);
 212         }
 213         /* Check LE mode */
 214         if (val & 0x02) {
 215             sysctrl->endian = 1;
 216         } else {
 217             sysctrl->endian = 0;
 218         }
 219         break;
 220     case 0x0800:
 221         /* Motorola CPU configuration register : read-only */
 222         break;
 223     case 0x0802:
 224         /* Motorola base module feature register : read-only */
 225         break;
 226     case 0x0803:
 227         /* Motorola base module status register : read-only */
 228         break;
 229     case 0x0808:
 230         /* Hardfile light register */
 231         if (val & 1)
 232             sysctrl->state |= STATE_HARDFILE;
 233         else
 234             sysctrl->state &= ~STATE_HARDFILE;
 235         break;
 236     case 0x0810:
 237         /* Password protect 1 register */
 238         if (sysctrl->nvram != NULL)
 239             m48t59_toggle_lock(sysctrl->nvram, 1);
 240         break;
 241     case 0x0812:
 242         /* Password protect 2 register */
 243         if (sysctrl->nvram != NULL)
 244             m48t59_toggle_lock(sysctrl->nvram, 2);
 245         break;
 246     case 0x0814:
 247         /* L2 invalidate register */
 248         //        tlb_flush(first_cpu, 1);
 249         break;
 250     case 0x081C:
 251         /* system control register */
 252         sysctrl->syscontrol = val & 0x0F;
 253         break;
 254     case 0x0850:
 255         /* I/O map type register */
 256         sysctrl->contiguous_map = val & 0x01;
 257         qemu_set_irq(sysctrl->contiguous_map_irq, sysctrl->contiguous_map);
 258         break;
 259     default:
 260         printf("ERROR: unaffected IO port write: %04" PRIx32
 261                " => %02" PRIx32"\n", addr, val);
 262         break;
 263     }
 264 }
 265
 266 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
 267 {
 268     sysctrl_t *sysctrl = opaque;
 269     uint32_t retval = 0xFF;
 270
 271     switch (addr) {
 272     case 0x0092:
 273         /* Special port 92 */
 274         retval = sysctrl->endian << 1;
 275         break;
 276     case 0x0800:
 277         /* Motorola CPU configuration register */
 278         retval = 0xEF; /* MPC750 */
 279         break;
 280     case 0x0802:
 281         /* Motorola Base module feature register */
 282         retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
 283         break;
 284     case 0x0803:
 285         /* Motorola base module status register */
 286         retval = 0xE0; /* Standard MPC750 */
 287         break;
 288     case 0x080C:
 289         /* Equipment present register:
 290          *  no L2 cache
 291          *  no upgrade processor
 292          *  no cards in PCI slots
 293          *  SCSI fuse is bad
 294          */
 295         retval = 0x3C;
 296         break;
 297     case 0x0810:
 298         /* Motorola base module extended feature register */
 299         retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
 300         break;
 301     case 0x0814:
 302         /* L2 invalidate: don't care */
 303         break;
 304     case 0x0818:
 305         /* Keylock */
 306         retval = 0x00;
 307         break;
 308     case 0x081C:
 309         /* system control register
 310          * 7 - 6 / 1 - 0: L2 cache enable
 311          */
 312         retval = sysctrl->syscontrol;
 313         break;
 314     case 0x0823:
 315         /* */
 316         retval = 0x03; /* no L2 cache */
 317         break;
 318     case 0x0850:
 319         /* I/O map type register */
 320         retval = sysctrl->contiguous_map;
 321         break;
 322     default:
 323         printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
 324         break;
 325     }
 326     PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
 327                    addr - PPC_IO_BASE, retval);
 328
 329     return retval;
 330 }
 331
 332
 333 #define NVRAM_SIZE        0x2000
 334
 335 static void cpu_request_exit(void *opaque, int irq, int level)
 336 {
 337     CPUState *cpu = current_cpu;
 338
 339     if (cpu && level) {
 340         cpu_exit(cpu);
 341     }
 342 }
 343
 344 static void ppc_prep_reset(void *opaque)
 345 {
 346     PowerPCCPU *cpu = opaque;
 347
 348     cpu_reset(CPU(cpu));
 349
 350     /* Reset address */
 351     cpu->env.nip = 0xfffffffc;
 352 }
 353
 354 static const MemoryRegionPortio prep_portio_list[] = {
 355     /* System control ports */
 356     { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
 357     { 0x0800, 0x52, 1,
 358       .read = PREP_io_800_readb, .write = PREP_io_800_writeb, },
 359     /* Special port to get debug messages from Open-Firmware */
 360     { 0x0F00, 4, 1, .write = PPC_debug_write, },
 361     PORTIO_END_OF_LIST(),
 362 };
 363
 364 /* PowerPC PREP hardware initialisation */
 365 static void ppc_prep_init(QEMUMachineInitArgs *args)
 366 {
 367     ram_addr_t ram_size = args->ram_size;
 368     const char *cpu_model = args->cpu_model;
 369     const char *kernel_filename = args->kernel_filename;
 370     const char *kernel_cmdline = args->kernel_cmdline;
 371     const char *initrd_filename = args->initrd_filename;
 372     const char *boot_device = args->boot_order;
 373     MemoryRegion *sysmem = get_system_memory();
 374     PowerPCCPU *cpu = NULL;
 375     CPUPPCState *env = NULL;
 376     nvram_t nvram;
 377     M48t59State *m48t59;
 378     PortioList *port_list = g_new(PortioList, 1);
 379 #if 0
 380     MemoryRegion *xcsr = g_new(MemoryRegion, 1);
 381 #endif
 382     int linux_boot, i, nb_nics1;
 383     MemoryRegion *ram = g_new(MemoryRegion, 1);
 384     MemoryRegion *vga = g_new(MemoryRegion, 1);
 385     uint32_t kernel_base, initrd_base;
 386     long kernel_size, initrd_size;
 387     DeviceState *dev;
 388     PCIHostState *pcihost;
 389     PCIBus *pci_bus;
 390     PCIDevice *pci;
 391     ISABus *isa_bus;
 392     ISADevice *isa;
 393     qemu_irq *cpu_exit_irq;
 394     int ppc_boot_device;
 395     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 396
 397     sysctrl = g_malloc0(sizeof(sysctrl_t));
 398
 399     linux_boot = (kernel_filename != NULL);
 400
 401     /* init CPUs */
 402     if (cpu_model == NULL)
 403         cpu_model = "602";
 404     for (i = 0; i < smp_cpus; i++) {
 405         cpu = cpu_ppc_init(cpu_model);
 406         if (cpu == NULL) {
 407             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
 408             exit(1);
 409         }
 410         env = &cpu->env;
 411
 412         if (env->flags & POWERPC_FLAG_RTC_CLK) {
 413             /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
 414             cpu_ppc_tb_init(env, 7812500UL);
 415         } else {
 416             /* Set time-base frequency to 100 Mhz */
 417             cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
 418         }
 419         qemu_register_reset(ppc_prep_reset, cpu);
 420     }
 421
 422     /* allocate RAM */
 423     memory_region_init_ram(ram, NULL, "ppc_prep.ram", ram_size);
 424     vmstate_register_ram_global(ram);
 425     memory_region_add_subregion(sysmem, 0, ram);
 426
 427     if (linux_boot) {
 428         kernel_base = KERNEL_LOAD_ADDR;
 429         /* now we can load the kernel */
 430         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 431                                           ram_size - kernel_base);
 432         if (kernel_size < 0) {
 433             hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
 434             exit(1);
 435         }
 436         /* load initrd */
 437         if (initrd_filename) {
 438             initrd_base = INITRD_LOAD_ADDR;
 439             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 440                                               ram_size - initrd_base);
 441             if (initrd_size < 0) {
 442                 hw_error("qemu: could not load initial ram disk '%s'\n",
 443                           initrd_filename);
 444             }
 445         } else {
 446             initrd_base = 0;
 447             initrd_size = 0;
 448         }
 449         ppc_boot_device = 'm';
 450     } else {
 451         kernel_base = 0;
 452         kernel_size = 0;
 453         initrd_base = 0;
 454         initrd_size = 0;
 455         ppc_boot_device = '\0';
 456         /* For now, OHW cannot boot from the network. */
 457         for (i = 0; boot_device[i] != '\0'; i++) {
 458             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 459                 ppc_boot_device = boot_device[i];
 460                 break;
 461             }
 462         }
 463         if (ppc_boot_device == '\0') {
 464             fprintf(stderr, "No valid boot device for Mac99 machine\n");
 465             exit(1);
 466         }
 467     }
 468
 469     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 470         hw_error("Only 6xx bus is supported on PREP machine\n");
 471     }
 472
 473     dev = qdev_create(NULL, "raven-pcihost");
 474     if (bios_name == NULL) {
 475         bios_name = BIOS_FILENAME;
 476     }
 477     qdev_prop_set_string(dev, "bios-name", bios_name);
 478     qdev_prop_set_uint32(dev, "elf-machine", ELF_MACHINE);
 479     pcihost = PCI_HOST_BRIDGE(dev);
 480     object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL);
 481     qdev_init_nofail(dev);
 482     pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
 483     if (pci_bus == NULL) {
 484         fprintf(stderr, "Couldn't create PCI host controller.\n");
 485         exit(1);
 486     }
 487     sysctrl->contiguous_map_irq = qdev_get_gpio_in(dev, 0);
 488
 489     /* PCI -> ISA bridge */
 490     pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378");
 491     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 492     cpu = POWERPC_CPU(first_cpu);
 493     qdev_connect_gpio_out(&pci->qdev, 0,
 494                           cpu->env.irq_inputs[PPC6xx_INPUT_INT]);
 495     qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq);
 496     sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9));
 497     sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11));
 498     sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9));
 499     sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11));
 500     isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0"));
 501
 502     /* Super I/O (parallel + serial ports) */
 503     isa = isa_create(isa_bus, TYPE_PC87312);
 504     dev = DEVICE(isa);
 505     qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */
 506     qdev_init_nofail(dev);
 507
 508     /* init basic PC hardware */
 509     pci_vga_init(pci_bus);
 510     /* Open Hack'Ware hack: PCI BAR#0 is programmed to 0xf0000000.
 511      * While bios will access framebuffer at 0xf0000000, real physical
 512      * address is 0xf0000000 + 0xc0000000 (PCI memory base).
 513      * Alias the wrong memory accesses to the right place.
 514      */
 515     memory_region_init_alias(vga, NULL, "vga-alias", pci_address_space(pci),
 516                              0xf0000000, 0x1000000);
 517     memory_region_add_subregion_overlap(sysmem, 0xf0000000, vga, 10);
 518
 519     nb_nics1 = nb_nics;
 520     if (nb_nics1 > NE2000_NB_MAX)
 521         nb_nics1 = NE2000_NB_MAX;
 522     for(i = 0; i < nb_nics1; i++) {
 523         if (nd_table[i].model == NULL) {
 524             nd_table[i].model = g_strdup("ne2k_isa");
 525         }
 526         if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
 527             isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i],
 528                             &nd_table[i]);
 529         } else {
 530             pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL);
 531         }
 532     }
 533
 534     ide_drive_get(hd, MAX_IDE_BUS);
 535     for(i = 0; i < MAX_IDE_BUS; i++) {
 536         isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
 537                      hd[2 * i],
 538                      hd[2 * i + 1]);
 539     }
 540     isa_create_simple(isa_bus, "i8042");
 541
 542     cpu = POWERPC_CPU(first_cpu);
 543     sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET];
 544
 545     portio_list_init(port_list, NULL, prep_portio_list, sysctrl, "prep");
 546     portio_list_add(port_list, isa_address_space_io(isa), 0x0);
 547
 548     /* PowerPC control and status register group */
 549 #if 0
 550     memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000);
 551     memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
 552 #endif
 553
 554     if (usb_enabled(false)) {
 555         pci_create_simple(pci_bus, -1, "pci-ohci");
 556     }
 557
 558     m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
 559     if (m48t59 == NULL)
 560         return;
 561     sysctrl->nvram = m48t59;
 562
 563     /* Initialise NVRAM */
 564     nvram.opaque = m48t59;
 565     nvram.read_fn = &m48t59_read;
 566     nvram.write_fn = &m48t59_write;
 567     PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
 568                          kernel_base, kernel_size,
 569                          kernel_cmdline,
 570                          initrd_base, initrd_size,
 571                          /* XXX: need an option to load a NVRAM image */
 572                          0,
 573                          graphic_width, graphic_height, graphic_depth);
 574 }
 575
 576 static QEMUMachine prep_machine = {
 577     .name = "prep",
 578     .desc = "PowerPC PREP platform",
 579     .init = ppc_prep_init,
 580     .max_cpus = MAX_CPUS,
 581     .default_boot_order = "cad",
 582 };
 583
 584 static void prep_machine_init(void)
 585 {
 586     qemu_register_machine(&prep_machine);
 587 }
 588
 589 machine_init(prep_machine_init);