1 /* 2 * QEMU HPPA hardware system emulator. 3 * Copyright 2018 Helge Deller <deller@gmx.de> 4 */ 5 6 #include "qemu/osdep.h" 7 #include "qemu/datadir.h" 8 #include "cpu.h" 9 #include "elf.h" 10 #include "hw/loader.h" 11 #include "qemu/error-report.h" 12 #include "sysemu/reset.h" 13 #include "sysemu/sysemu.h" 14 #include "sysemu/runstate.h" 15 #include "hw/rtc/mc146818rtc.h" 16 #include "hw/timer/i8254.h" 17 #include "hw/char/serial.h" 18 #include "hw/char/parallel.h" 19 #include "hw/intc/i8259.h" 20 #include "hw/input/lasips2.h" 21 #include "hw/net/lasi_82596.h" 22 #include "hw/nmi.h" 23 #include "hw/pci/pci.h" 24 #include "hw/pci-host/dino.h" 25 #include "hw/misc/lasi.h" 26 #include "hppa_hardware.h" 27 #include "qemu/units.h" 28 #include "qapi/error.h" 29 #include "net/net.h" 30 #include "qemu/log.h" 31 #include "net/net.h" 32 33 #define MAX_IDE_BUS 2 34 35 #define MIN_SEABIOS_HPPA_VERSION 1 /* require at least this fw version */ 36 37 #define HPA_POWER_BUTTON (FIRMWARE_END - 0x10) 38 39 #define enable_lasi_lan() 0 40 41 42 static void hppa_powerdown_req(Notifier *n, void *opaque) 43 { 44 hwaddr soft_power_reg = HPA_POWER_BUTTON; 45 uint32_t val; 46 47 val = ldl_be_phys(&address_space_memory, soft_power_reg); 48 if ((val >> 8) == 0) { 49 /* immediately shut down when under hardware control */ 50 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 51 return; 52 } 53 54 /* clear bit 31 to indicate that the power switch was pressed. */ 55 val &= ~1; 56 stl_be_phys(&address_space_memory, soft_power_reg, val); 57 } 58 59 static Notifier hppa_system_powerdown_notifier = { 60 .notify = hppa_powerdown_req 61 }; 62 63 /* Fallback for unassigned PCI I/O operations. Avoids MCHK. */ 64 static uint64_t ignore_read(void *opaque, hwaddr addr, unsigned size) 65 { 66 return 0; 67 } 68 69 static void ignore_write(void *opaque, hwaddr addr, uint64_t v, unsigned size) 70 { 71 } 72 73 static const MemoryRegionOps hppa_pci_ignore_ops = { 74 .read = ignore_read, 75 .write = ignore_write, 76 .endianness = DEVICE_BIG_ENDIAN, 77 .valid = { 78 .min_access_size = 1, 79 .max_access_size = 8, 80 }, 81 .impl = { 82 .min_access_size = 1, 83 .max_access_size = 8, 84 }, 85 }; 86 87 static ISABus *hppa_isa_bus(void) 88 { 89 ISABus *isa_bus; 90 qemu_irq *isa_irqs; 91 MemoryRegion *isa_region; 92 93 isa_region = g_new(MemoryRegion, 1); 94 memory_region_init_io(isa_region, NULL, &hppa_pci_ignore_ops, 95 NULL, "isa-io", 0x800); 96 memory_region_add_subregion(get_system_memory(), IDE_HPA, 97 isa_region); 98 99 isa_bus = isa_bus_new(NULL, get_system_memory(), isa_region, 100 &error_abort); 101 isa_irqs = i8259_init(isa_bus, 102 /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */ 103 NULL); 104 isa_bus_irqs(isa_bus, isa_irqs); 105 106 return isa_bus; 107 } 108 109 static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr) 110 { 111 addr &= (0x10000000 - 1); 112 return addr; 113 } 114 115 static HPPACPU *cpu[HPPA_MAX_CPUS]; 116 static uint64_t firmware_entry; 117 118 static void fw_cfg_boot_set(void *opaque, const char *boot_device, 119 Error **errp) 120 { 121 fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); 122 } 123 124 static FWCfgState *create_fw_cfg(MachineState *ms) 125 { 126 FWCfgState *fw_cfg; 127 uint64_t val; 128 129 fw_cfg = fw_cfg_init_mem(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4); 130 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, ms->smp.cpus); 131 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, HPPA_MAX_CPUS); 132 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, ms->ram_size); 133 134 val = cpu_to_le64(MIN_SEABIOS_HPPA_VERSION); 135 fw_cfg_add_file(fw_cfg, "/etc/firmware-min-version", 136 g_memdup(&val, sizeof(val)), sizeof(val)); 137 138 val = cpu_to_le64(HPPA_TLB_ENTRIES); 139 fw_cfg_add_file(fw_cfg, "/etc/cpu/tlb_entries", 140 g_memdup(&val, sizeof(val)), sizeof(val)); 141 142 val = cpu_to_le64(HPPA_BTLB_ENTRIES); 143 fw_cfg_add_file(fw_cfg, "/etc/cpu/btlb_entries", 144 g_memdup(&val, sizeof(val)), sizeof(val)); 145 146 val = cpu_to_le64(HPA_POWER_BUTTON); 147 fw_cfg_add_file(fw_cfg, "/etc/power-button-addr", 148 g_memdup(&val, sizeof(val)), sizeof(val)); 149 150 fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ms->boot_config.order[0]); 151 qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); 152 153 return fw_cfg; 154 } 155 156 static LasiState *lasi_init(void) 157 { 158 DeviceState *dev; 159 160 dev = qdev_new(TYPE_LASI_CHIP); 161 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 162 163 return LASI_CHIP(dev); 164 } 165 166 static DinoState *dino_init(MemoryRegion *addr_space) 167 { 168 DeviceState *dev; 169 170 dev = qdev_new(TYPE_DINO_PCI_HOST_BRIDGE); 171 object_property_set_link(OBJECT(dev), "memory-as", OBJECT(addr_space), 172 &error_fatal); 173 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 174 175 return DINO_PCI_HOST_BRIDGE(dev); 176 } 177 178 static void machine_hppa_init(MachineState *machine) 179 { 180 const char *kernel_filename = machine->kernel_filename; 181 const char *kernel_cmdline = machine->kernel_cmdline; 182 const char *initrd_filename = machine->initrd_filename; 183 DeviceState *dev, *dino_dev, *lasi_dev; 184 PCIBus *pci_bus; 185 ISABus *isa_bus; 186 char *firmware_filename; 187 uint64_t firmware_low, firmware_high; 188 long size; 189 uint64_t kernel_entry = 0, kernel_low, kernel_high; 190 MemoryRegion *addr_space = get_system_memory(); 191 MemoryRegion *rom_region; 192 MemoryRegion *cpu_region; 193 long i; 194 unsigned int smp_cpus = machine->smp.cpus; 195 SysBusDevice *s; 196 197 /* Create CPUs. */ 198 for (i = 0; i < smp_cpus; i++) { 199 char *name = g_strdup_printf("cpu%ld-io-eir", i); 200 cpu[i] = HPPA_CPU(cpu_create(machine->cpu_type)); 201 202 cpu_region = g_new(MemoryRegion, 1); 203 memory_region_init_io(cpu_region, OBJECT(cpu[i]), &hppa_io_eir_ops, 204 cpu[i], name, 4); 205 memory_region_add_subregion(addr_space, CPU_HPA + i * 0x1000, 206 cpu_region); 207 g_free(name); 208 } 209 210 /* Main memory region. */ 211 if (machine->ram_size > 3 * GiB) { 212 error_report("RAM size is currently restricted to 3GB"); 213 exit(EXIT_FAILURE); 214 } 215 memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1); 216 217 218 /* Init Lasi chip */ 219 lasi_dev = DEVICE(lasi_init()); 220 memory_region_add_subregion(addr_space, LASI_HPA, 221 sysbus_mmio_get_region( 222 SYS_BUS_DEVICE(lasi_dev), 0)); 223 224 /* Init Dino (PCI host bus chip). */ 225 dino_dev = DEVICE(dino_init(addr_space)); 226 memory_region_add_subregion(addr_space, DINO_HPA, 227 sysbus_mmio_get_region( 228 SYS_BUS_DEVICE(dino_dev), 0)); 229 pci_bus = PCI_BUS(qdev_get_child_bus(dino_dev, "pci")); 230 assert(pci_bus); 231 232 /* Create ISA bus. */ 233 isa_bus = hppa_isa_bus(); 234 assert(isa_bus); 235 236 /* Realtime clock, used by firmware for PDC_TOD call. */ 237 mc146818_rtc_init(isa_bus, 2000, NULL); 238 239 /* Serial code setup. */ 240 if (serial_hd(0)) { 241 uint32_t addr = DINO_UART_HPA + 0x800; 242 serial_mm_init(addr_space, addr, 0, 243 qdev_get_gpio_in(dino_dev, DINO_IRQ_RS232INT), 244 115200, serial_hd(0), DEVICE_BIG_ENDIAN); 245 } 246 247 if (serial_hd(1)) { 248 /* Serial port */ 249 serial_mm_init(addr_space, LASI_UART_HPA + 0x800, 0, 250 qdev_get_gpio_in(lasi_dev, LASI_IRQ_UART_HPA), 8000000 / 16, 251 serial_hd(1), DEVICE_BIG_ENDIAN); 252 } 253 254 /* Parallel port */ 255 parallel_mm_init(addr_space, LASI_LPT_HPA + 0x800, 0, 256 qdev_get_gpio_in(lasi_dev, LASI_IRQ_LAN_HPA), 257 parallel_hds[0]); 258 259 /* fw_cfg configuration interface */ 260 create_fw_cfg(machine); 261 262 /* SCSI disk setup. */ 263 dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a")); 264 lsi53c8xx_handle_legacy_cmdline(dev); 265 266 /* Graphics setup. */ 267 if (machine->enable_graphics && vga_interface_type != VGA_NONE) { 268 vga_interface_created = true; 269 dev = qdev_new("artist"); 270 s = SYS_BUS_DEVICE(dev); 271 sysbus_realize_and_unref(s, &error_fatal); 272 sysbus_mmio_map(s, 0, LASI_GFX_HPA); 273 sysbus_mmio_map(s, 1, ARTIST_FB_ADDR); 274 } 275 276 /* Network setup. */ 277 if (enable_lasi_lan()) { 278 lasi_82596_init(addr_space, LASI_LAN_HPA, 279 qdev_get_gpio_in(lasi_dev, LASI_IRQ_LAN_HPA)); 280 } 281 282 for (i = 0; i < nb_nics; i++) { 283 if (!enable_lasi_lan()) { 284 pci_nic_init_nofail(&nd_table[i], pci_bus, "tulip", NULL); 285 } 286 } 287 288 /* PS/2 Keyboard/Mouse */ 289 lasips2_init(addr_space, LASI_PS2KBD_HPA, 290 qdev_get_gpio_in(lasi_dev, LASI_IRQ_PS2KBD_HPA)); 291 292 /* register power switch emulation */ 293 qemu_register_powerdown_notifier(&hppa_system_powerdown_notifier); 294 295 /* Load firmware. Given that this is not "real" firmware, 296 but one explicitly written for the emulation, we might as 297 well load it directly from an ELF image. */ 298 firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, 299 machine->firmware ?: "hppa-firmware.img"); 300 if (firmware_filename == NULL) { 301 error_report("no firmware provided"); 302 exit(1); 303 } 304 305 size = load_elf(firmware_filename, NULL, NULL, NULL, 306 &firmware_entry, &firmware_low, &firmware_high, NULL, 307 true, EM_PARISC, 0, 0); 308 309 /* Unfortunately, load_elf sign-extends reading elf32. */ 310 firmware_entry = (target_ureg)firmware_entry; 311 firmware_low = (target_ureg)firmware_low; 312 firmware_high = (target_ureg)firmware_high; 313 314 if (size < 0) { 315 error_report("could not load firmware '%s'", firmware_filename); 316 exit(1); 317 } 318 qemu_log_mask(CPU_LOG_PAGE, "Firmware loaded at 0x%08" PRIx64 319 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 ".\n", 320 firmware_low, firmware_high, firmware_entry); 321 if (firmware_low < FIRMWARE_START || firmware_high >= FIRMWARE_END) { 322 error_report("Firmware overlaps with memory or IO space"); 323 exit(1); 324 } 325 g_free(firmware_filename); 326 327 rom_region = g_new(MemoryRegion, 1); 328 memory_region_init_ram(rom_region, NULL, "firmware", 329 (FIRMWARE_END - FIRMWARE_START), &error_fatal); 330 memory_region_add_subregion(addr_space, FIRMWARE_START, rom_region); 331 332 /* Load kernel */ 333 if (kernel_filename) { 334 size = load_elf(kernel_filename, NULL, &cpu_hppa_to_phys, 335 NULL, &kernel_entry, &kernel_low, &kernel_high, NULL, 336 true, EM_PARISC, 0, 0); 337 338 /* Unfortunately, load_elf sign-extends reading elf32. */ 339 kernel_entry = (target_ureg) cpu_hppa_to_phys(NULL, kernel_entry); 340 kernel_low = (target_ureg)kernel_low; 341 kernel_high = (target_ureg)kernel_high; 342 343 if (size < 0) { 344 error_report("could not load kernel '%s'", kernel_filename); 345 exit(1); 346 } 347 qemu_log_mask(CPU_LOG_PAGE, "Kernel loaded at 0x%08" PRIx64 348 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 349 ", size %" PRIu64 " kB\n", 350 kernel_low, kernel_high, kernel_entry, size / KiB); 351 352 if (kernel_cmdline) { 353 cpu[0]->env.gr[24] = 0x4000; 354 pstrcpy_targphys("cmdline", cpu[0]->env.gr[24], 355 TARGET_PAGE_SIZE, kernel_cmdline); 356 } 357 358 if (initrd_filename) { 359 ram_addr_t initrd_base; 360 int64_t initrd_size; 361 362 initrd_size = get_image_size(initrd_filename); 363 if (initrd_size < 0) { 364 error_report("could not load initial ram disk '%s'", 365 initrd_filename); 366 exit(1); 367 } 368 369 /* Load the initrd image high in memory. 370 Mirror the algorithm used by palo: 371 (1) Due to sign-extension problems and PDC, 372 put the initrd no higher than 1G. 373 (2) Reserve 64k for stack. */ 374 initrd_base = MIN(machine->ram_size, 1 * GiB); 375 initrd_base = initrd_base - 64 * KiB; 376 initrd_base = (initrd_base - initrd_size) & TARGET_PAGE_MASK; 377 378 if (initrd_base < kernel_high) { 379 error_report("kernel and initial ram disk too large!"); 380 exit(1); 381 } 382 383 load_image_targphys(initrd_filename, initrd_base, initrd_size); 384 cpu[0]->env.gr[23] = initrd_base; 385 cpu[0]->env.gr[22] = initrd_base + initrd_size; 386 } 387 } 388 389 if (!kernel_entry) { 390 /* When booting via firmware, tell firmware if we want interactive 391 * mode (kernel_entry=1), and to boot from CD (gr[24]='d') 392 * or hard disc * (gr[24]='c'). 393 */ 394 kernel_entry = machine->boot_config.has_menu ? machine->boot_config.menu : 0; 395 cpu[0]->env.gr[24] = machine->boot_config.order[0]; 396 } 397 398 /* We jump to the firmware entry routine and pass the 399 * various parameters in registers. After firmware initialization, 400 * firmware will start the Linux kernel with ramdisk and cmdline. 401 */ 402 cpu[0]->env.gr[26] = machine->ram_size; 403 cpu[0]->env.gr[25] = kernel_entry; 404 405 /* tell firmware how many SMP CPUs to present in inventory table */ 406 cpu[0]->env.gr[21] = smp_cpus; 407 408 /* tell firmware fw_cfg port */ 409 cpu[0]->env.gr[19] = FW_CFG_IO_BASE; 410 } 411 412 static void hppa_machine_reset(MachineState *ms) 413 { 414 unsigned int smp_cpus = ms->smp.cpus; 415 int i; 416 417 qemu_devices_reset(); 418 419 /* Start all CPUs at the firmware entry point. 420 * Monarch CPU will initialize firmware, secondary CPUs 421 * will enter a small idle look and wait for rendevouz. */ 422 for (i = 0; i < smp_cpus; i++) { 423 cpu_set_pc(CPU(cpu[i]), firmware_entry); 424 cpu[i]->env.gr[5] = CPU_HPA + i * 0x1000; 425 } 426 427 /* already initialized by machine_hppa_init()? */ 428 if (cpu[0]->env.gr[26] == ms->ram_size) { 429 return; 430 } 431 432 cpu[0]->env.gr[26] = ms->ram_size; 433 cpu[0]->env.gr[25] = 0; /* no firmware boot menu */ 434 cpu[0]->env.gr[24] = 'c'; 435 /* gr22/gr23 unused, no initrd while reboot. */ 436 cpu[0]->env.gr[21] = smp_cpus; 437 /* tell firmware fw_cfg port */ 438 cpu[0]->env.gr[19] = FW_CFG_IO_BASE; 439 } 440 441 static void hppa_nmi(NMIState *n, int cpu_index, Error **errp) 442 { 443 CPUState *cs; 444 445 CPU_FOREACH(cs) { 446 cpu_interrupt(cs, CPU_INTERRUPT_NMI); 447 } 448 } 449 450 static void hppa_machine_init_class_init(ObjectClass *oc, void *data) 451 { 452 MachineClass *mc = MACHINE_CLASS(oc); 453 NMIClass *nc = NMI_CLASS(oc); 454 455 mc->desc = "HPPA B160L machine"; 456 mc->default_cpu_type = TYPE_HPPA_CPU; 457 mc->init = machine_hppa_init; 458 mc->reset = hppa_machine_reset; 459 mc->block_default_type = IF_SCSI; 460 mc->max_cpus = HPPA_MAX_CPUS; 461 mc->default_cpus = 1; 462 mc->is_default = true; 463 mc->default_ram_size = 512 * MiB; 464 mc->default_boot_order = "cd"; 465 mc->default_ram_id = "ram"; 466 467 nc->nmi_monitor_handler = hppa_nmi; 468 } 469 470 static const TypeInfo hppa_machine_init_typeinfo = { 471 .name = MACHINE_TYPE_NAME("hppa"), 472 .parent = TYPE_MACHINE, 473 .class_init = hppa_machine_init_class_init, 474 .interfaces = (InterfaceInfo[]) { 475 { TYPE_NMI }, 476 { } 477 }, 478 }; 479 480 static void hppa_machine_init_register_types(void) 481 { 482 type_register_static(&hppa_machine_init_typeinfo); 483 } 484 485 type_init(hppa_machine_init_register_types) 486