hw/ppc/e500.c

   1 /*
   2  * QEMU PowerPC e500-based platforms
   3  *
   4  * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
   5  *
   6  * Author: Yu Liu,     <yu.liu@freescale.com>
   7  *
   8  * This file is derived from hw/ppc440_bamboo.c,
   9  * the copyright for that material belongs to the original owners.
  10  *
  11  * This is free software; you can redistribute it and/or modify
  12  * it under the terms of  the GNU General  Public License as published by
  13  * the Free Software Foundation;  either version 2 of the  License, or
  14  * (at your option) any later version.
  15  */
  16
  17 #include "config.h"
  18 #include "qemu-common.h"
  19 #include "e500.h"
  20 #include "net.h"
  21 #include "hw/hw.h"
  22 #include "hw/serial.h"
  23 #include "hw/pci/pci.h"
  24 #include "hw/boards.h"
  25 #include "sysemu.h"
  26 #include "kvm.h"
  27 #include "kvm_ppc.h"
  28 #include "device_tree.h"
  29 #include "hw/openpic.h"
  30 #include "hw/ppc.h"
  31 #include "hw/loader.h"
  32 #include "elf.h"
  33 #include "hw/sysbus.h"
  34 #include "exec-memory.h"
  35 #include "host-utils.h"
  36
  37 #define BINARY_DEVICE_TREE_FILE    "mpc8544ds.dtb"
  38 #define UIMAGE_LOAD_BASE           0
  39 #define DTC_LOAD_PAD               0x1800000
  40 #define DTC_PAD_MASK               0xFFFFF
  41 #define INITRD_LOAD_PAD            0x2000000
  42 #define INITRD_PAD_MASK            0xFFFFFF
  43
  44 #define RAM_SIZES_ALIGN            (64UL << 20)
  45
  46 /* TODO: parameterize */
  47 #define MPC8544_CCSRBAR_BASE       0xE0000000ULL
  48 #define MPC8544_CCSRBAR_SIZE       0x00100000ULL
  49 #define MPC8544_MPIC_REGS_BASE     (MPC8544_CCSRBAR_BASE + 0x40000ULL)
  50 #define MPC8544_SERIAL0_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4500ULL)
  51 #define MPC8544_SERIAL1_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4600ULL)
  52 #define MPC8544_PCI_REGS_BASE      (MPC8544_CCSRBAR_BASE + 0x8000ULL)
  53 #define MPC8544_PCI_REGS_SIZE      0x1000ULL
  54 #define MPC8544_PCI_IO             0xE1000000ULL
  55 #define MPC8544_UTIL_BASE          (MPC8544_CCSRBAR_BASE + 0xe0000ULL)
  56 #define MPC8544_SPIN_BASE          0xEF000000ULL
  57
  58 struct boot_info
  59 {
  60     uint32_t dt_base;
  61     uint32_t dt_size;
  62     uint32_t entry;
  63 };
  64
  65 static void pci_map_create(void *fdt, uint32_t *pci_map, uint32_t mpic)
  66 {
  67     int i;
  68     const uint32_t tmp[] = {
  69                              /* IDSEL 0x11 J17 Slot 1 */
  70                              0x8800, 0x0, 0x0, 0x1, mpic, 0x2, 0x1,
  71                              0x8800, 0x0, 0x0, 0x2, mpic, 0x3, 0x1,
  72                              0x8800, 0x0, 0x0, 0x3, mpic, 0x4, 0x1,
  73                              0x8800, 0x0, 0x0, 0x4, mpic, 0x1, 0x1,
  74
  75                              /* IDSEL 0x12 J16 Slot 2 */
  76                              0x9000, 0x0, 0x0, 0x1, mpic, 0x3, 0x1,
  77                              0x9000, 0x0, 0x0, 0x2, mpic, 0x4, 0x1,
  78                              0x9000, 0x0, 0x0, 0x3, mpic, 0x2, 0x1,
  79                              0x9000, 0x0, 0x0, 0x4, mpic, 0x1, 0x1,
  80                            };
  81     for (i = 0; i < (7 * 8); i++) {
  82         pci_map[i] = cpu_to_be32(tmp[i]);
  83     }
  84 }
  85
  86 static void dt_serial_create(void *fdt, unsigned long long offset,
  87                              const char *soc, const char *mpic,
  88                              const char *alias, int idx, bool defcon)
  89 {
  90     char ser[128];
  91
  92     snprintf(ser, sizeof(ser), "%s/serial@%llx", soc, offset);
  93     qemu_devtree_add_subnode(fdt, ser);
  94     qemu_devtree_setprop_string(fdt, ser, "device_type", "serial");
  95     qemu_devtree_setprop_string(fdt, ser, "compatible", "ns16550");
  96     qemu_devtree_setprop_cells(fdt, ser, "reg", offset, 0x100);
  97     qemu_devtree_setprop_cell(fdt, ser, "cell-index", idx);
  98     qemu_devtree_setprop_cell(fdt, ser, "clock-frequency", 0);
  99     qemu_devtree_setprop_cells(fdt, ser, "interrupts", 42, 2);
 100     qemu_devtree_setprop_phandle(fdt, ser, "interrupt-parent", mpic);
 101     qemu_devtree_setprop_string(fdt, "/aliases", alias, ser);
 102
 103     if (defcon) {
 104         qemu_devtree_setprop_string(fdt, "/chosen", "linux,stdout-path", ser);
 105     }
 106 }
 107
 108 static int ppce500_load_device_tree(CPUPPCState *env,
 109                                     PPCE500Params *params,
 110                                     hwaddr addr,
 111                                     hwaddr initrd_base,
 112                                     hwaddr initrd_size)
 113 {
 114     int ret = -1;
 115     uint64_t mem_reg_property[] = { 0, cpu_to_be64(params->ram_size) };
 116     int fdt_size;
 117     void *fdt;
 118     uint8_t hypercall[16];
 119     uint32_t clock_freq = 400000000;
 120     uint32_t tb_freq = 400000000;
 121     int i;
 122     const char *toplevel_compat = NULL; /* user override */
 123     char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
 124     char soc[128];
 125     char mpic[128];
 126     uint32_t mpic_ph;
 127     char gutil[128];
 128     char pci[128];
 129     uint32_t pci_map[7 * 8];
 130     uint32_t pci_ranges[14] =
 131         {
 132             0x2000000, 0x0, 0xc0000000,
 133             0x0, 0xc0000000,
 134             0x0, 0x20000000,
 135
 136             0x1000000, 0x0, 0x0,
 137             0x0, 0xe1000000,
 138             0x0, 0x10000,
 139         };
 140     QemuOpts *machine_opts;
 141     const char *dtb_file = NULL;
 142
 143     machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
 144     if (machine_opts) {
 145         dtb_file = qemu_opt_get(machine_opts, "dtb");
 146         toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
 147     }
 148
 149     if (dtb_file) {
 150         char *filename;
 151         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file);
 152         if (!filename) {
 153             goto out;
 154         }
 155
 156         fdt = load_device_tree(filename, &fdt_size);
 157         if (!fdt) {
 158             goto out;
 159         }
 160         goto done;
 161     }
 162
 163     fdt = create_device_tree(&fdt_size);
 164     if (fdt == NULL) {
 165         goto out;
 166     }
 167
 168     /* Manipulate device tree in memory. */
 169     qemu_devtree_setprop_cell(fdt, "/", "#address-cells", 2);
 170     qemu_devtree_setprop_cell(fdt, "/", "#size-cells", 2);
 171
 172     qemu_devtree_add_subnode(fdt, "/memory");
 173     qemu_devtree_setprop_string(fdt, "/memory", "device_type", "memory");
 174     qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
 175                          sizeof(mem_reg_property));
 176
 177     qemu_devtree_add_subnode(fdt, "/chosen");
 178     if (initrd_size) {
 179         ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
 180                                         initrd_base);
 181         if (ret < 0) {
 182             fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
 183         }
 184
 185         ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
 186                                         (initrd_base + initrd_size));
 187         if (ret < 0) {
 188             fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
 189         }
 190     }
 191
 192     ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
 193                                       params->kernel_cmdline);
 194     if (ret < 0)
 195         fprintf(stderr, "couldn't set /chosen/bootargs\n");
 196
 197     if (kvm_enabled()) {
 198         /* Read out host's frequencies */
 199         clock_freq = kvmppc_get_clockfreq();
 200         tb_freq = kvmppc_get_tbfreq();
 201
 202         /* indicate KVM hypercall interface */
 203         qemu_devtree_add_subnode(fdt, "/hypervisor");
 204         qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible",
 205                                     "linux,kvm");
 206         kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
 207         qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions",
 208                              hypercall, sizeof(hypercall));
 209     }
 210
 211     /* Create CPU nodes */
 212     qemu_devtree_add_subnode(fdt, "/cpus");
 213     qemu_devtree_setprop_cell(fdt, "/cpus", "#address-cells", 1);
 214     qemu_devtree_setprop_cell(fdt, "/cpus", "#size-cells", 0);
 215
 216     /* We need to generate the cpu nodes in reverse order, so Linux can pick
 217        the first node as boot node and be happy */
 218     for (i = smp_cpus - 1; i >= 0; i--) {
 219         char cpu_name[128];
 220         uint64_t cpu_release_addr = MPC8544_SPIN_BASE + (i * 0x20);
 221
 222         for (env = first_cpu; env != NULL; env = env->next_cpu) {
 223             if (env->cpu_index == i) {
 224                 break;
 225             }
 226         }
 227
 228         if (!env) {
 229             continue;
 230         }
 231
 232         snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x", env->cpu_index);
 233         qemu_devtree_add_subnode(fdt, cpu_name);
 234         qemu_devtree_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
 235         qemu_devtree_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
 236         qemu_devtree_setprop_string(fdt, cpu_name, "device_type", "cpu");
 237         qemu_devtree_setprop_cell(fdt, cpu_name, "reg", env->cpu_index);
 238         qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-line-size",
 239                                   env->dcache_line_size);
 240         qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-line-size",
 241                                   env->icache_line_size);
 242         qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000);
 243         qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000);
 244         qemu_devtree_setprop_cell(fdt, cpu_name, "bus-frequency", 0);
 245         if (env->cpu_index) {
 246             qemu_devtree_setprop_string(fdt, cpu_name, "status", "disabled");
 247             qemu_devtree_setprop_string(fdt, cpu_name, "enable-method", "spin-table");
 248             qemu_devtree_setprop_u64(fdt, cpu_name, "cpu-release-addr",
 249                                      cpu_release_addr);
 250         } else {
 251             qemu_devtree_setprop_string(fdt, cpu_name, "status", "okay");
 252         }
 253     }
 254
 255     qemu_devtree_add_subnode(fdt, "/aliases");
 256     /* XXX These should go into their respective devices' code */
 257     snprintf(soc, sizeof(soc), "/soc@%llx", MPC8544_CCSRBAR_BASE);
 258     qemu_devtree_add_subnode(fdt, soc);
 259     qemu_devtree_setprop_string(fdt, soc, "device_type", "soc");
 260     qemu_devtree_setprop(fdt, soc, "compatible", compatible_sb,
 261                          sizeof(compatible_sb));
 262     qemu_devtree_setprop_cell(fdt, soc, "#address-cells", 1);
 263     qemu_devtree_setprop_cell(fdt, soc, "#size-cells", 1);
 264     qemu_devtree_setprop_cells(fdt, soc, "ranges", 0x0,
 265                                MPC8544_CCSRBAR_BASE >> 32, MPC8544_CCSRBAR_BASE,
 266                                MPC8544_CCSRBAR_SIZE);
 267     /* XXX should contain a reasonable value */
 268     qemu_devtree_setprop_cell(fdt, soc, "bus-frequency", 0);
 269
 270     snprintf(mpic, sizeof(mpic), "%s/pic@%llx", soc,
 271              MPC8544_MPIC_REGS_BASE - MPC8544_CCSRBAR_BASE);
 272     qemu_devtree_add_subnode(fdt, mpic);
 273     qemu_devtree_setprop_string(fdt, mpic, "device_type", "open-pic");
 274     qemu_devtree_setprop_string(fdt, mpic, "compatible", "chrp,open-pic");
 275     qemu_devtree_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_BASE -
 276                                MPC8544_CCSRBAR_BASE, 0x40000);
 277     qemu_devtree_setprop_cell(fdt, mpic, "#address-cells", 0);
 278     qemu_devtree_setprop_cell(fdt, mpic, "#interrupt-cells", 2);
 279     mpic_ph = qemu_devtree_alloc_phandle(fdt);
 280     qemu_devtree_setprop_cell(fdt, mpic, "phandle", mpic_ph);
 281     qemu_devtree_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph);
 282     qemu_devtree_setprop(fdt, mpic, "interrupt-controller", NULL, 0);
 283
 284     /*
 285      * We have to generate ser1 first, because Linux takes the first
 286      * device it finds in the dt as serial output device. And we generate
 287      * devices in reverse order to the dt.
 288      */
 289     dt_serial_create(fdt, MPC8544_SERIAL1_REGS_BASE - MPC8544_CCSRBAR_BASE,
 290                      soc, mpic, "serial1", 1, false);
 291     dt_serial_create(fdt, MPC8544_SERIAL0_REGS_BASE - MPC8544_CCSRBAR_BASE,
 292                      soc, mpic, "serial0", 0, true);
 293
 294     snprintf(gutil, sizeof(gutil), "%s/global-utilities@%llx", soc,
 295              MPC8544_UTIL_BASE - MPC8544_CCSRBAR_BASE);
 296     qemu_devtree_add_subnode(fdt, gutil);
 297     qemu_devtree_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts");
 298     qemu_devtree_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_BASE -
 299                                MPC8544_CCSRBAR_BASE, 0x1000);
 300     qemu_devtree_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0);
 301
 302     snprintf(pci, sizeof(pci), "/pci@%llx", MPC8544_PCI_REGS_BASE);
 303     qemu_devtree_add_subnode(fdt, pci);
 304     qemu_devtree_setprop_cell(fdt, pci, "cell-index", 0);
 305     qemu_devtree_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci");
 306     qemu_devtree_setprop_string(fdt, pci, "device_type", "pci");
 307     qemu_devtree_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0,
 308                                0x0, 0x7);
 309     pci_map_create(fdt, pci_map, qemu_devtree_get_phandle(fdt, mpic));
 310     qemu_devtree_setprop(fdt, pci, "interrupt-map", pci_map, sizeof(pci_map));
 311     qemu_devtree_setprop_phandle(fdt, pci, "interrupt-parent", mpic);
 312     qemu_devtree_setprop_cells(fdt, pci, "interrupts", 24, 2);
 313     qemu_devtree_setprop_cells(fdt, pci, "bus-range", 0, 255);
 314     for (i = 0; i < 14; i++) {
 315         pci_ranges[i] = cpu_to_be32(pci_ranges[i]);
 316     }
 317     qemu_devtree_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges));
 318     qemu_devtree_setprop_cells(fdt, pci, "reg", MPC8544_PCI_REGS_BASE >> 32,
 319                                MPC8544_PCI_REGS_BASE, 0, 0x1000);
 320     qemu_devtree_setprop_cell(fdt, pci, "clock-frequency", 66666666);
 321     qemu_devtree_setprop_cell(fdt, pci, "#interrupt-cells", 1);
 322     qemu_devtree_setprop_cell(fdt, pci, "#size-cells", 2);
 323     qemu_devtree_setprop_cell(fdt, pci, "#address-cells", 3);
 324     qemu_devtree_setprop_string(fdt, "/aliases", "pci0", pci);
 325
 326     params->fixup_devtree(params, fdt);
 327
 328     if (toplevel_compat) {
 329         qemu_devtree_setprop(fdt, "/", "compatible", toplevel_compat,
 330                              strlen(toplevel_compat) + 1);
 331     }
 332
 333 done:
 334     qemu_devtree_dumpdtb(fdt, fdt_size);
 335     ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
 336     if (ret < 0) {
 337         goto out;
 338     }
 339     g_free(fdt);
 340     ret = fdt_size;
 341
 342 out:
 343
 344     return ret;
 345 }
 346
 347 /* Create -kernel TLB entries for BookE.  */
 348 static inline hwaddr booke206_page_size_to_tlb(uint64_t size)
 349 {
 350     return 63 - clz64(size >> 10);
 351 }
 352
 353 static void mmubooke_create_initial_mapping(CPUPPCState *env)
 354 {
 355     struct boot_info *bi = env->load_info;
 356     ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0);
 357     hwaddr size, dt_end;
 358     int ps;
 359
 360     /* Our initial TLB entry needs to cover everything from 0 to
 361        the device tree top */
 362     dt_end = bi->dt_base + bi->dt_size;
 363     ps = booke206_page_size_to_tlb(dt_end) + 1;
 364     if (ps & 1) {
 365         /* e500v2 can only do even TLB size bits */
 366         ps++;
 367     }
 368     size = (ps << MAS1_TSIZE_SHIFT);
 369     tlb->mas1 = MAS1_VALID | size;
 370     tlb->mas2 = 0;
 371     tlb->mas7_3 = 0;
 372     tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX;
 373
 374     env->tlb_dirty = true;
 375 }
 376
 377 static void ppce500_cpu_reset_sec(void *opaque)
 378 {
 379     PowerPCCPU *cpu = opaque;
 380     CPUPPCState *env = &cpu->env;
 381
 382     cpu_reset(CPU(cpu));
 383
 384     /* Secondary CPU starts in halted state for now. Needs to change when
 385        implementing non-kernel boot. */
 386     env->halted = 1;
 387     env->exception_index = EXCP_HLT;
 388 }
 389
 390 static void ppce500_cpu_reset(void *opaque)
 391 {
 392     PowerPCCPU *cpu = opaque;
 393     CPUPPCState *env = &cpu->env;
 394     struct boot_info *bi = env->load_info;
 395
 396     cpu_reset(CPU(cpu));
 397
 398     /* Set initial guest state. */
 399     env->halted = 0;
 400     env->gpr[1] = (16<<20) - 8;
 401     env->gpr[3] = bi->dt_base;
 402     env->nip = bi->entry;
 403     mmubooke_create_initial_mapping(env);
 404 }
 405
 406 void ppce500_init(PPCE500Params *params)
 407 {
 408     MemoryRegion *address_space_mem = get_system_memory();
 409     MemoryRegion *ram = g_new(MemoryRegion, 1);
 410     PCIBus *pci_bus;
 411     CPUPPCState *env = NULL;
 412     uint64_t elf_entry;
 413     uint64_t elf_lowaddr;
 414     hwaddr entry=0;
 415     hwaddr loadaddr=UIMAGE_LOAD_BASE;
 416     target_long kernel_size=0;
 417     target_ulong dt_base = 0;
 418     target_ulong initrd_base = 0;
 419     target_long initrd_size=0;
 420     int i=0;
 421     unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
 422     qemu_irq **irqs, *mpic;
 423     DeviceState *dev;
 424     CPUPPCState *firstenv = NULL;
 425
 426     /* Setup CPUs */
 427     if (params->cpu_model == NULL) {
 428         params->cpu_model = "e500v2_v30";
 429     }
 430
 431     irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));
 432     irqs[0] = g_malloc0(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
 433     for (i = 0; i < smp_cpus; i++) {
 434         PowerPCCPU *cpu;
 435         qemu_irq *input;
 436
 437         cpu = cpu_ppc_init(params->cpu_model);
 438         if (cpu == NULL) {
 439             fprintf(stderr, "Unable to initialize CPU!\n");
 440             exit(1);
 441         }
 442         env = &cpu->env;
 443
 444         if (!firstenv) {
 445             firstenv = env;
 446         }
 447
 448         irqs[i] = irqs[0] + (i * OPENPIC_OUTPUT_NB);
 449         input = (qemu_irq *)env->irq_inputs;
 450         irqs[i][OPENPIC_OUTPUT_INT] = input[PPCE500_INPUT_INT];
 451         irqs[i][OPENPIC_OUTPUT_CINT] = input[PPCE500_INPUT_CINT];
 452         env->spr[SPR_BOOKE_PIR] = env->cpu_index = i;
 453         env->mpic_cpu_base = MPC8544_MPIC_REGS_BASE + 0x20000;
 454
 455         ppc_booke_timers_init(env, 400000000, PPC_TIMER_E500);
 456
 457         /* Register reset handler */
 458         if (!i) {
 459             /* Primary CPU */
 460             struct boot_info *boot_info;
 461             boot_info = g_malloc0(sizeof(struct boot_info));
 462             qemu_register_reset(ppce500_cpu_reset, cpu);
 463             env->load_info = boot_info;
 464         } else {
 465             /* Secondary CPUs */
 466             qemu_register_reset(ppce500_cpu_reset_sec, cpu);
 467         }
 468     }
 469
 470     env = firstenv;
 471
 472     /* Fixup Memory size on a alignment boundary */
 473     ram_size &= ~(RAM_SIZES_ALIGN - 1);
 474
 475     /* Register Memory */
 476     memory_region_init_ram(ram, "mpc8544ds.ram", ram_size);
 477     vmstate_register_ram_global(ram);
 478     memory_region_add_subregion(address_space_mem, 0, ram);
 479
 480     /* MPIC */
 481     mpic = mpic_init(address_space_mem, MPC8544_MPIC_REGS_BASE,
 482                      smp_cpus, irqs, NULL);
 483
 484     if (!mpic) {
 485         cpu_abort(env, "MPIC failed to initialize\n");
 486     }
 487
 488     /* Serial */
 489     if (serial_hds[0]) {
 490         serial_mm_init(address_space_mem, MPC8544_SERIAL0_REGS_BASE,
 491                        0, mpic[12+26], 399193,
 492                        serial_hds[0], DEVICE_BIG_ENDIAN);
 493     }
 494
 495     if (serial_hds[1]) {
 496         serial_mm_init(address_space_mem, MPC8544_SERIAL1_REGS_BASE,
 497                        0, mpic[12+26], 399193,
 498                        serial_hds[1], DEVICE_BIG_ENDIAN);
 499     }
 500
 501     /* General Utility device */
 502     sysbus_create_simple("mpc8544-guts", MPC8544_UTIL_BASE, NULL);
 503
 504     /* PCI */
 505     dev = sysbus_create_varargs("e500-pcihost", MPC8544_PCI_REGS_BASE,
 506                                 mpic[pci_irq_nrs[0]], mpic[pci_irq_nrs[1]],
 507                                 mpic[pci_irq_nrs[2]], mpic[pci_irq_nrs[3]],
 508                                 NULL);
 509     pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
 510     if (!pci_bus)
 511         printf("couldn't create PCI controller!\n");
 512
 513     sysbus_mmio_map(sysbus_from_qdev(dev), 1, MPC8544_PCI_IO);
 514
 515     if (pci_bus) {
 516         /* Register network interfaces. */
 517         for (i = 0; i < nb_nics; i++) {
 518             pci_nic_init_nofail(&nd_table[i], "virtio", NULL);
 519         }
 520     }
 521
 522     /* Register spinning region */
 523     sysbus_create_simple("e500-spin", MPC8544_SPIN_BASE, NULL);
 524
 525     /* Load kernel. */
 526     if (params->kernel_filename) {
 527         kernel_size = load_uimage(params->kernel_filename, &entry,
 528                                   &loadaddr, NULL);
 529         if (kernel_size < 0) {
 530             kernel_size = load_elf(params->kernel_filename, NULL, NULL,
 531                                    &elf_entry, &elf_lowaddr, NULL, 1,
 532                                    ELF_MACHINE, 0);
 533             entry = elf_entry;
 534             loadaddr = elf_lowaddr;
 535         }
 536         /* XXX try again as binary */
 537         if (kernel_size < 0) {
 538             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 539                     params->kernel_filename);
 540             exit(1);
 541         }
 542     }
 543
 544     /* Load initrd. */
 545     if (params->initrd_filename) {
 546         initrd_base = (loadaddr + kernel_size + INITRD_LOAD_PAD) &
 547             ~INITRD_PAD_MASK;
 548         initrd_size = load_image_targphys(params->initrd_filename, initrd_base,
 549                                           ram_size - initrd_base);
 550
 551         if (initrd_size < 0) {
 552             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 553                     params->initrd_filename);
 554             exit(1);
 555         }
 556     }
 557
 558     /* If we're loading a kernel directly, we must load the device tree too. */
 559     if (params->kernel_filename) {
 560         struct boot_info *boot_info;
 561         int dt_size;
 562
 563         dt_base = (loadaddr + kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
 564         dt_size = ppce500_load_device_tree(env, params, dt_base, initrd_base,
 565                                            initrd_size);
 566         if (dt_size < 0) {
 567             fprintf(stderr, "couldn't load device tree\n");
 568             exit(1);
 569         }
 570
 571         boot_info = env->load_info;
 572         boot_info->entry = entry;
 573         boot_info->dt_base = dt_base;
 574         boot_info->dt_size = dt_size;
 575     }
 576
 577     if (kvm_enabled()) {
 578         kvmppc_init();
 579     }
 580 }