hw/ppc/prep.c

   1 /*
   2  * QEMU PPC PREP hardware System Emulator
   3  *
   4  * Copyright (c) 2003-2007 Jocelyn Mayer
   5  * Copyright (c) 2017 Hervé Poussineau
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #include "qemu/osdep.h"
  27 #include "hw/rtc/m48t59.h"
  28 #include "hw/char/serial.h"
  29 #include "hw/block/fdc.h"
  30 #include "net/net.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 "qapi/error.h"
  37 #include "qemu/error-report.h"
  38 #include "qemu/log.h"
  39 #include "hw/loader.h"
  40 #include "hw/rtc/mc146818rtc.h"
  41 #include "hw/isa/pc87312.h"
  42 #include "hw/qdev-properties.h"
  43 #include "sysemu/kvm.h"
  44 #include "sysemu/reset.h"
  45 #include "trace.h"
  46 #include "elf.h"
  47 #include "qemu/units.h"
  48 #include "kvm_ppc.h"
  49
  50 /* SMP is not enabled, for now */
  51 #define MAX_CPUS 1
  52
  53 #define MAX_IDE_BUS 2
  54
  55 #define CFG_ADDR 0xf0000510
  56
  57 #define KERNEL_LOAD_ADDR 0x01000000
  58 #define INITRD_LOAD_ADDR 0x01800000
  59
  60 #define NVRAM_SIZE        0x2000
  61
  62 static void fw_cfg_boot_set(void *opaque, const char *boot_device,
  63                             Error **errp)
  64 {
  65     fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
  66 }
  67
  68 static void ppc_prep_reset(void *opaque)
  69 {
  70     PowerPCCPU *cpu = opaque;
  71
  72     cpu_reset(CPU(cpu));
  73 }
  74
  75
  76 /*****************************************************************************/
  77 /* NVRAM helpers */
  78 static inline uint32_t nvram_read(Nvram *nvram, uint32_t addr)
  79 {
  80     NvramClass *k = NVRAM_GET_CLASS(nvram);
  81     return (k->read)(nvram, addr);
  82 }
  83
  84 static inline void nvram_write(Nvram *nvram, uint32_t addr, uint32_t val)
  85 {
  86     NvramClass *k = NVRAM_GET_CLASS(nvram);
  87     (k->write)(nvram, addr, val);
  88 }
  89
  90 static void NVRAM_set_byte(Nvram *nvram, uint32_t addr, uint8_t value)
  91 {
  92     nvram_write(nvram, addr, value);
  93 }
  94
  95 static uint8_t NVRAM_get_byte(Nvram *nvram, uint32_t addr)
  96 {
  97     return nvram_read(nvram, addr);
  98 }
  99
 100 static void NVRAM_set_word(Nvram *nvram, uint32_t addr, uint16_t value)
 101 {
 102     nvram_write(nvram, addr, value >> 8);
 103     nvram_write(nvram, addr + 1, value & 0xFF);
 104 }
 105
 106 static uint16_t NVRAM_get_word(Nvram *nvram, uint32_t addr)
 107 {
 108     uint16_t tmp;
 109
 110     tmp = nvram_read(nvram, addr) << 8;
 111     tmp |= nvram_read(nvram, addr + 1);
 112
 113     return tmp;
 114 }
 115
 116 static void NVRAM_set_lword(Nvram *nvram, uint32_t addr, uint32_t value)
 117 {
 118     nvram_write(nvram, addr, value >> 24);
 119     nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
 120     nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
 121     nvram_write(nvram, addr + 3, value & 0xFF);
 122 }
 123
 124 static void NVRAM_set_string(Nvram *nvram, uint32_t addr, const char *str,
 125                              uint32_t max)
 126 {
 127     int i;
 128
 129     for (i = 0; i < max && str[i] != '\0'; i++) {
 130         nvram_write(nvram, addr + i, str[i]);
 131     }
 132     nvram_write(nvram, addr + i, str[i]);
 133     nvram_write(nvram, addr + max - 1, '\0');
 134 }
 135
 136 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
 137 {
 138     uint16_t tmp;
 139     uint16_t pd, pd1, pd2;
 140
 141     tmp = prev >> 8;
 142     pd = prev ^ value;
 143     pd1 = pd & 0x000F;
 144     pd2 = ((pd >> 4) & 0x000F) ^ pd1;
 145     tmp ^= (pd1 << 3) | (pd1 << 8);
 146     tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
 147
 148     return tmp;
 149 }
 150
 151 static uint16_t NVRAM_compute_crc (Nvram *nvram, uint32_t start, uint32_t count)
 152 {
 153     uint32_t i;
 154     uint16_t crc = 0xFFFF;
 155     int odd;
 156
 157     odd = count & 1;
 158     count &= ~1;
 159     for (i = 0; i != count; i++) {
 160         crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
 161     }
 162     if (odd) {
 163         crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
 164     }
 165
 166     return crc;
 167 }
 168
 169 #define CMDLINE_ADDR 0x017ff000
 170
 171 static int PPC_NVRAM_set_params (Nvram *nvram, uint16_t NVRAM_size,
 172                           const char *arch,
 173                           uint32_t RAM_size, int boot_device,
 174                           uint32_t kernel_image, uint32_t kernel_size,
 175                           const char *cmdline,
 176                           uint32_t initrd_image, uint32_t initrd_size,
 177                           uint32_t NVRAM_image,
 178                           int width, int height, int depth)
 179 {
 180     uint16_t crc;
 181
 182     /* Set parameters for Open Hack'Ware BIOS */
 183     NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
 184     NVRAM_set_lword(nvram,  0x10, 0x00000002); /* structure v2 */
 185     NVRAM_set_word(nvram,   0x14, NVRAM_size);
 186     NVRAM_set_string(nvram, 0x20, arch, 16);
 187     NVRAM_set_lword(nvram,  0x30, RAM_size);
 188     NVRAM_set_byte(nvram,   0x34, boot_device);
 189     NVRAM_set_lword(nvram,  0x38, kernel_image);
 190     NVRAM_set_lword(nvram,  0x3C, kernel_size);
 191     if (cmdline) {
 192         /* XXX: put the cmdline in NVRAM too ? */
 193         pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR,
 194                          cmdline);
 195         NVRAM_set_lword(nvram,  0x40, CMDLINE_ADDR);
 196         NVRAM_set_lword(nvram,  0x44, strlen(cmdline));
 197     } else {
 198         NVRAM_set_lword(nvram,  0x40, 0);
 199         NVRAM_set_lword(nvram,  0x44, 0);
 200     }
 201     NVRAM_set_lword(nvram,  0x48, initrd_image);
 202     NVRAM_set_lword(nvram,  0x4C, initrd_size);
 203     NVRAM_set_lword(nvram,  0x50, NVRAM_image);
 204
 205     NVRAM_set_word(nvram,   0x54, width);
 206     NVRAM_set_word(nvram,   0x56, height);
 207     NVRAM_set_word(nvram,   0x58, depth);
 208     crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
 209     NVRAM_set_word(nvram,   0xFC, crc);
 210
 211     return 0;
 212 }
 213
 214 static int prep_set_cmos_checksum(DeviceState *dev, void *opaque)
 215 {
 216     uint16_t checksum = *(uint16_t *)opaque;
 217     ISADevice *rtc;
 218
 219     if (object_dynamic_cast(OBJECT(dev), TYPE_MC146818_RTC)) {
 220         rtc = ISA_DEVICE(dev);
 221         rtc_set_memory(rtc, 0x2e, checksum & 0xff);
 222         rtc_set_memory(rtc, 0x3e, checksum & 0xff);
 223         rtc_set_memory(rtc, 0x2f, checksum >> 8);
 224         rtc_set_memory(rtc, 0x3f, checksum >> 8);
 225
 226         object_property_add_alias(qdev_get_machine(), "rtc-time", OBJECT(rtc),
 227                                   "date");
 228     }
 229     return 0;
 230 }
 231
 232 static void ibm_40p_init(MachineState *machine)
 233 {
 234     const char *bios_name = machine->firmware ?: "openbios-ppc";
 235     CPUPPCState *env = NULL;
 236     uint16_t cmos_checksum;
 237     PowerPCCPU *cpu;
 238     DeviceState *dev, *i82378_dev;
 239     SysBusDevice *pcihost, *s;
 240     Nvram *m48t59 = NULL;
 241     PCIBus *pci_bus;
 242     ISADevice *isa_dev;
 243     ISABus *isa_bus;
 244     void *fw_cfg;
 245     int i;
 246     uint32_t kernel_base = 0, initrd_base = 0;
 247     long kernel_size = 0, initrd_size = 0;
 248     char boot_device;
 249
 250     /* init CPU */
 251     cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
 252     env = &cpu->env;
 253     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 254         error_report("only 6xx bus is supported on this machine");
 255         exit(1);
 256     }
 257
 258     if (env->flags & POWERPC_FLAG_RTC_CLK) {
 259         /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
 260         cpu_ppc_tb_init(env, 7812500UL);
 261     } else {
 262         /* Set time-base frequency to 100 Mhz */
 263         cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
 264     }
 265     qemu_register_reset(ppc_prep_reset, cpu);
 266
 267     /* PCI host */
 268     dev = qdev_new("raven-pcihost");
 269     qdev_prop_set_string(dev, "bios-name", bios_name);
 270     qdev_prop_set_uint32(dev, "elf-machine", PPC_ELF_MACHINE);
 271     pcihost = SYS_BUS_DEVICE(dev);
 272     object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev));
 273     sysbus_realize_and_unref(pcihost, &error_fatal);
 274     pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0"));
 275     if (!pci_bus) {
 276         error_report("could not create PCI host controller");
 277         exit(1);
 278     }
 279
 280     /* PCI -> ISA bridge */
 281     i82378_dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(11, 0), "i82378"));
 282     qdev_connect_gpio_out(i82378_dev, 0,
 283                           cpu->env.irq_inputs[PPC6xx_INPUT_INT]);
 284     sysbus_connect_irq(pcihost, 0, qdev_get_gpio_in(i82378_dev, 15));
 285     isa_bus = ISA_BUS(qdev_get_child_bus(i82378_dev, "isa.0"));
 286
 287     /* Memory controller */
 288     isa_dev = isa_new("rs6000-mc");
 289     dev = DEVICE(isa_dev);
 290     qdev_prop_set_uint32(dev, "ram-size", machine->ram_size);
 291     isa_realize_and_unref(isa_dev, isa_bus, &error_fatal);
 292
 293     /* RTC */
 294     isa_dev = isa_new(TYPE_MC146818_RTC);
 295     dev = DEVICE(isa_dev);
 296     qdev_prop_set_int32(dev, "base_year", 1900);
 297     isa_realize_and_unref(isa_dev, isa_bus, &error_fatal);
 298
 299     /* initialize CMOS checksums */
 300     cmos_checksum = 0x6aa9;
 301     qbus_walk_children(BUS(isa_bus), prep_set_cmos_checksum, NULL, NULL, NULL,
 302                        &cmos_checksum);
 303
 304     /* add some more devices */
 305     if (defaults_enabled()) {
 306         m48t59 = NVRAM(isa_create_simple(isa_bus, "isa-m48t59"));
 307
 308         isa_dev = isa_new("cs4231a");
 309         dev = DEVICE(isa_dev);
 310         qdev_prop_set_uint32(dev, "iobase", 0x830);
 311         qdev_prop_set_uint32(dev, "irq", 10);
 312         isa_realize_and_unref(isa_dev, isa_bus, &error_fatal);
 313
 314         isa_dev = isa_new("pc87312");
 315         dev = DEVICE(isa_dev);
 316         qdev_prop_set_uint32(dev, "config", 12);
 317         isa_realize_and_unref(isa_dev, isa_bus, &error_fatal);
 318
 319         isa_dev = isa_new("prep-systemio");
 320         dev = DEVICE(isa_dev);
 321         qdev_prop_set_uint32(dev, "ibm-planar-id", 0xfc);
 322         qdev_prop_set_uint32(dev, "equipment", 0xc0);
 323         isa_realize_and_unref(isa_dev, isa_bus, &error_fatal);
 324
 325         dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(1, 0),
 326                                        "lsi53c810"));
 327         lsi53c8xx_handle_legacy_cmdline(dev);
 328         qdev_connect_gpio_out(dev, 0, qdev_get_gpio_in(i82378_dev, 13));
 329
 330         /* XXX: s3-trio at PCI_DEVFN(2, 0) */
 331         pci_vga_init(pci_bus);
 332
 333         for (i = 0; i < nb_nics; i++) {
 334             pci_nic_init_nofail(&nd_table[i], pci_bus, "pcnet",
 335                                 i == 0 ? "3" : NULL);
 336         }
 337     }
 338
 339     /* Prepare firmware configuration for OpenBIOS */
 340     dev = qdev_new(TYPE_FW_CFG_MEM);
 341     fw_cfg = FW_CFG(dev);
 342     qdev_prop_set_uint32(dev, "data_width", 1);
 343     qdev_prop_set_bit(dev, "dma_enabled", false);
 344     object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG,
 345                               OBJECT(fw_cfg));
 346     s = SYS_BUS_DEVICE(dev);
 347     sysbus_realize_and_unref(s, &error_fatal);
 348     sysbus_mmio_map(s, 0, CFG_ADDR);
 349     sysbus_mmio_map(s, 1, CFG_ADDR + 2);
 350
 351     if (machine->kernel_filename) {
 352         /* load kernel */
 353         kernel_base = KERNEL_LOAD_ADDR;
 354         kernel_size = load_image_targphys(machine->kernel_filename,
 355                                           kernel_base,
 356                                           machine->ram_size - kernel_base);
 357         if (kernel_size < 0) {
 358             error_report("could not load kernel '%s'",
 359                          machine->kernel_filename);
 360             exit(1);
 361         }
 362         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
 363         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 364         /* load initrd */
 365         if (machine->initrd_filename) {
 366             initrd_base = INITRD_LOAD_ADDR;
 367             initrd_size = load_image_targphys(machine->initrd_filename,
 368                                               initrd_base,
 369                                               machine->ram_size - initrd_base);
 370             if (initrd_size < 0) {
 371                 error_report("could not load initial ram disk '%s'",
 372                              machine->initrd_filename);
 373                 exit(1);
 374             }
 375             fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
 376             fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 377         }
 378         if (machine->kernel_cmdline && *machine->kernel_cmdline) {
 379             fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
 380             pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE,
 381                              machine->kernel_cmdline);
 382             fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA,
 383                               machine->kernel_cmdline);
 384             fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
 385                            strlen(machine->kernel_cmdline) + 1);
 386         }
 387         boot_device = 'm';
 388     } else {
 389         boot_device = machine->boot_order[0];
 390     }
 391
 392     fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)machine->smp.max_cpus);
 393     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size);
 394     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_PREP);
 395
 396     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
 397     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
 398     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
 399
 400     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled());
 401     if (kvm_enabled()) {
 402         uint8_t *hypercall;
 403
 404         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
 405         hypercall = g_malloc(16);
 406         kvmppc_get_hypercall(env, hypercall, 16);
 407         fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);
 408         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());
 409     } else {
 410         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, NANOSECONDS_PER_SECOND);
 411     }
 412     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device);
 413     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
 414
 415     /* Prepare firmware configuration for Open Hack'Ware */
 416     if (m48t59) {
 417         PPC_NVRAM_set_params(m48t59, NVRAM_SIZE, "PREP", machine->ram_size,
 418                              boot_device,
 419                              kernel_base, kernel_size,
 420                              machine->kernel_cmdline,
 421                              initrd_base, initrd_size,
 422                              /* XXX: need an option to load a NVRAM image */
 423                              0,
 424                              graphic_width, graphic_height, graphic_depth);
 425     }
 426 }
 427
 428 static void ibm_40p_machine_init(MachineClass *mc)
 429 {
 430     mc->desc = "IBM RS/6000 7020 (40p)",
 431     mc->init = ibm_40p_init;
 432     mc->max_cpus = 1;
 433     mc->default_ram_size = 128 * MiB;
 434     mc->block_default_type = IF_SCSI;
 435     mc->default_boot_order = "c";
 436     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("604");
 437     mc->default_display = "std";
 438 }
 439
 440 DEFINE_MACHINE("40p", ibm_40p_machine_init)