hw/ppc_oldworld.c

   1 /*
   2  * QEMU OldWorld PowerMac (currently ~G3 Beige) hardware System Emulator
   3  *
   4  * Copyright (c) 2004-2007 Fabrice Bellard
   5  * Copyright (c) 2007 Jocelyn Mayer
   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 #include "hw.h"
  26 #include "ppc.h"
  27 #include "ppc_mac.h"
  28 #include "mac_dbdma.h"
  29 #include "nvram.h"
  30 #include "pc.h"
  31 #include "sysemu.h"
  32 #include "net.h"
  33 #include "isa.h"
  34 #include "pci.h"
  35 #include "usb-ohci.h"
  36 #include "boards.h"
  37 #include "fw_cfg.h"
  38 #include "escc.h"
  39 #include "ide.h"
  40 #include "loader.h"
  41 #include "elf.h"
  42 #include "kvm.h"
  43 #include "kvm_ppc.h"
  44
  45 #define MAX_IDE_BUS 2
  46 #define VGA_BIOS_SIZE 65536
  47 #define CFG_ADDR 0xf0000510
  48
  49 /* temporary frame buffer OSI calls for the video.x driver. The right
  50    solution is to modify the driver to use VGA PCI I/Os */
  51 /* XXX: to be removed. This is no way related to emulation */
  52 static int vga_osi_call (CPUState *env)
  53 {
  54     static int vga_vbl_enabled;
  55     int linesize;
  56
  57 #if 0
  58     printf("osi_call R5=%016" PRIx64 "\n", ppc_dump_gpr(env, 5));
  59 #endif
  60
  61     /* same handler as PearPC, coming from the original MOL video
  62        driver. */
  63     switch(env->gpr[5]) {
  64     case 4:
  65         break;
  66     case 28: /* set_vmode */
  67         if (env->gpr[6] != 1 || env->gpr[7] != 0)
  68             env->gpr[3] = 1;
  69         else
  70             env->gpr[3] = 0;
  71         break;
  72     case 29: /* get_vmode_info */
  73         if (env->gpr[6] != 0) {
  74             if (env->gpr[6] != 1 || env->gpr[7] != 0) {
  75                 env->gpr[3] = 1;
  76                 break;
  77             }
  78         }
  79         env->gpr[3] = 0;
  80         env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */
  81         env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */
  82         env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */
  83         env->gpr[7] = 85 << 16; /* refresh rate */
  84         env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */
  85         linesize = ((graphic_depth + 7) >> 3) * graphic_width;
  86         linesize = (linesize + 3) & ~3;
  87         env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */
  88         break;
  89     case 31: /* set_video power */
  90         env->gpr[3] = 0;
  91         break;
  92     case 39: /* video_ctrl */
  93         if (env->gpr[6] == 0 || env->gpr[6] == 1)
  94             vga_vbl_enabled = env->gpr[6];
  95         env->gpr[3] = 0;
  96         break;
  97     case 47:
  98         break;
  99     case 59: /* set_color */
 100         /* R6 = index, R7 = RGB */
 101         env->gpr[3] = 0;
 102         break;
 103     case 64: /* get color */
 104         /* R6 = index */
 105         env->gpr[3] = 0;
 106         break;
 107     case 116: /* set hwcursor */
 108         /* R6 = x, R7 = y, R8 = visible, R9 = data */
 109         break;
 110     default:
 111         fprintf(stderr, "unsupported OSI call R5=%016" PRIx64 "\n",
 112                 ppc_dump_gpr(env, 5));
 113         break;
 114     }
 115
 116     return 1; /* osi_call handled */
 117 }
 118
 119 static int fw_cfg_boot_set(void *opaque, const char *boot_device)
 120 {
 121     fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
 122     return 0;
 123 }
 124
 125 static void ppc_heathrow_init (ram_addr_t ram_size,
 126                                const char *boot_device,
 127                                const char *kernel_filename,
 128                                const char *kernel_cmdline,
 129                                const char *initrd_filename,
 130                                const char *cpu_model)
 131 {
 132     CPUState *env = NULL, *envs[MAX_CPUS];
 133     char *filename;
 134     qemu_irq *pic, **heathrow_irqs;
 135     int linux_boot, i;
 136     ram_addr_t ram_offset, bios_offset, vga_bios_offset;
 137     uint32_t kernel_base, initrd_base;
 138     int32_t kernel_size, initrd_size;
 139     PCIBus *pci_bus;
 140     MacIONVRAMState *nvr;
 141     int vga_bios_size, bios_size;
 142     int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index;
 143     int escc_mem_index, ide_mem_index[2];
 144     uint16_t ppc_boot_device;
 145     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 146     void *fw_cfg;
 147     void *dbdma;
 148     uint8_t *vga_bios_ptr;
 149
 150     linux_boot = (kernel_filename != NULL);
 151
 152     /* init CPUs */
 153     if (cpu_model == NULL)
 154         cpu_model = "G3";
 155     for (i = 0; i < smp_cpus; i++) {
 156         env = cpu_init(cpu_model);
 157         if (!env) {
 158             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
 159             exit(1);
 160         }
 161         /* Set time-base frequency to 16.6 Mhz */
 162         cpu_ppc_tb_init(env,  16600000UL);
 163         env->osi_call = vga_osi_call;
 164         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
 165         envs[i] = env;
 166     }
 167
 168     /* Make sure all register sets take effect */
 169     cpu_synchronize_state(env);
 170
 171     /* allocate RAM */
 172     if (ram_size > (2047 << 20)) {
 173         fprintf(stderr,
 174                 "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",
 175                 ((unsigned int)ram_size / (1 << 20)));
 176         exit(1);
 177     }
 178
 179     ram_offset = qemu_ram_alloc(ram_size);
 180     cpu_register_physical_memory(0, ram_size, ram_offset);
 181
 182     /* allocate and load BIOS */
 183     bios_offset = qemu_ram_alloc(BIOS_SIZE);
 184     if (bios_name == NULL)
 185         bios_name = PROM_FILENAME;
 186     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 187     cpu_register_physical_memory(PROM_ADDR, BIOS_SIZE, bios_offset | IO_MEM_ROM);
 188
 189     /* Load OpenBIOS (ELF) */
 190     if (filename) {
 191         bios_size = load_elf(filename, 0, NULL, NULL, NULL,
 192                                1, ELF_MACHINE, 0);
 193         qemu_free(filename);
 194     } else {
 195         bios_size = -1;
 196     }
 197     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 198         hw_error("qemu: could not load PowerPC bios '%s'\n", bios_name);
 199         exit(1);
 200     }
 201
 202     /* allocate and load VGA BIOS */
 203     vga_bios_offset = qemu_ram_alloc(VGA_BIOS_SIZE);
 204     vga_bios_ptr = qemu_get_ram_ptr(vga_bios_offset);
 205     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, VGABIOS_FILENAME);
 206     if (filename) {
 207         vga_bios_size = load_image(filename, vga_bios_ptr + 8);
 208         qemu_free(filename);
 209     } else {
 210         vga_bios_size = -1;
 211     }
 212     if (vga_bios_size < 0) {
 213         /* if no bios is present, we can still work */
 214         fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n",
 215                 VGABIOS_FILENAME);
 216         vga_bios_size = 0;
 217     } else {
 218         /* set a specific header (XXX: find real Apple format for NDRV
 219            drivers) */
 220         vga_bios_ptr[0] = 'N';
 221         vga_bios_ptr[1] = 'D';
 222         vga_bios_ptr[2] = 'R';
 223         vga_bios_ptr[3] = 'V';
 224         cpu_to_be32w((uint32_t *)(vga_bios_ptr + 4), vga_bios_size);
 225         vga_bios_size += 8;
 226
 227         /* Round to page boundary */
 228         vga_bios_size = (vga_bios_size + TARGET_PAGE_SIZE - 1) &
 229             TARGET_PAGE_MASK;
 230     }
 231
 232     if (linux_boot) {
 233         uint64_t lowaddr = 0;
 234         int bswap_needed;
 235
 236 #ifdef BSWAP_NEEDED
 237         bswap_needed = 1;
 238 #else
 239         bswap_needed = 0;
 240 #endif
 241         kernel_base = KERNEL_LOAD_ADDR;
 242         /* Now we can load the kernel. The first step tries to load the kernel
 243            supposing PhysAddr = 0x00000000. If that was wrong the kernel is
 244            loaded again, the new PhysAddr being computed from lowaddr. */
 245         kernel_size = load_elf(kernel_filename, kernel_base, NULL, &lowaddr, NULL,
 246                                1, ELF_MACHINE, 0);
 247         if (kernel_size > 0 && lowaddr != KERNEL_LOAD_ADDR) {
 248             kernel_size = load_elf(kernel_filename, (2 * kernel_base) - lowaddr,
 249                                    NULL, NULL, NULL, 1, ELF_MACHINE, 0);
 250         }
 251         if (kernel_size < 0)
 252             kernel_size = load_aout(kernel_filename, kernel_base,
 253                                     ram_size - kernel_base, bswap_needed,
 254                                     TARGET_PAGE_SIZE);
 255         if (kernel_size < 0)
 256             kernel_size = load_image_targphys(kernel_filename,
 257                                               kernel_base,
 258                                               ram_size - kernel_base);
 259         if (kernel_size < 0) {
 260             hw_error("qemu: could not load kernel '%s'\n",
 261                       kernel_filename);
 262             exit(1);
 263         }
 264         /* load initrd */
 265         if (initrd_filename) {
 266             initrd_base = INITRD_LOAD_ADDR;
 267             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 268                                               ram_size - initrd_base);
 269             if (initrd_size < 0) {
 270                 hw_error("qemu: could not load initial ram disk '%s'\n",
 271                          initrd_filename);
 272                 exit(1);
 273             }
 274         } else {
 275             initrd_base = 0;
 276             initrd_size = 0;
 277         }
 278         ppc_boot_device = 'm';
 279     } else {
 280         kernel_base = 0;
 281         kernel_size = 0;
 282         initrd_base = 0;
 283         initrd_size = 0;
 284         ppc_boot_device = '\0';
 285         for (i = 0; boot_device[i] != '\0'; i++) {
 286             /* TOFIX: for now, the second IDE channel is not properly
 287              *        used by OHW. The Mac floppy disk are not emulated.
 288              *        For now, OHW cannot boot from the network.
 289              */
 290 #if 0
 291             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 292                 ppc_boot_device = boot_device[i];
 293                 break;
 294             }
 295 #else
 296             if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {
 297                 ppc_boot_device = boot_device[i];
 298                 break;
 299             }
 300 #endif
 301         }
 302         if (ppc_boot_device == '\0') {
 303             fprintf(stderr, "No valid boot device for G3 Beige machine\n");
 304             exit(1);
 305         }
 306     }
 307
 308     isa_mem_base = 0x80000000;
 309
 310     /* Register 2 MB of ISA IO space */
 311     isa_mmio_init(0xfe000000, 0x00200000);
 312
 313     /* XXX: we register only 1 output pin for heathrow PIC */
 314     heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
 315     heathrow_irqs[0] =
 316         qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1);
 317     /* Connect the heathrow PIC outputs to the 6xx bus */
 318     for (i = 0; i < smp_cpus; i++) {
 319         switch (PPC_INPUT(env)) {
 320         case PPC_FLAGS_INPUT_6xx:
 321             heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
 322             heathrow_irqs[i][0] =
 323                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
 324             break;
 325         default:
 326             hw_error("Bus model not supported on OldWorld Mac machine\n");
 327         }
 328     }
 329
 330     /* init basic PC hardware */
 331     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 332         hw_error("Only 6xx bus is supported on heathrow machine\n");
 333     }
 334     pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
 335     pci_bus = pci_grackle_init(0xfec00000, pic);
 336     pci_vga_init(pci_bus, vga_bios_offset, vga_bios_size);
 337
 338     escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
 339                                serial_hds[1], ESCC_CLOCK, 4);
 340
 341     for(i = 0; i < nb_nics; i++)
 342         pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
 343
 344
 345     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
 346         fprintf(stderr, "qemu: too many IDE bus\n");
 347         exit(1);
 348     }
 349
 350     /* First IDE channel is a MAC IDE on the MacIO bus */
 351     hd[0] = drive_get(IF_IDE, 0, 0);
 352     hd[1] = drive_get(IF_IDE, 0, 1);
 353     dbdma = DBDMA_init(&dbdma_mem_index);
 354     ide_mem_index[0] = -1;
 355     ide_mem_index[1] = pmac_ide_init(hd, pic[0x0D], dbdma, 0x16, pic[0x02]);
 356
 357     /* Second IDE channel is a CMD646 on the PCI bus */
 358     hd[0] = drive_get(IF_IDE, 1, 0);
 359     hd[1] = drive_get(IF_IDE, 1, 1);
 360     hd[3] = hd[2] = NULL;
 361     pci_cmd646_ide_init(pci_bus, hd, 0);
 362
 363     /* cuda also initialize ADB */
 364     cuda_init(&cuda_mem_index, pic[0x12]);
 365
 366     adb_kbd_init(&adb_bus);
 367     adb_mouse_init(&adb_bus);
 368
 369     nvr = macio_nvram_init(&nvram_mem_index, 0x2000, 4);
 370     pmac_format_nvram_partition(nvr, 0x2000);
 371
 372     macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem_index,
 373                dbdma_mem_index, cuda_mem_index, nvr, 2, ide_mem_index,
 374                escc_mem_index);
 375
 376     if (usb_enabled) {
 377         usb_ohci_init_pci(pci_bus, -1);
 378     }
 379
 380     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
 381         graphic_depth = 15;
 382
 383     /* No PCI init: the BIOS will do it */
 384
 385     fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
 386     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
 387     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
 388     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
 389     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
 390     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 391     if (kernel_cmdline) {
 392         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
 393         pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
 394     } else {
 395         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
 396     }
 397     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
 398     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 399     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
 400
 401     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
 402     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
 403     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
 404
 405     if (kvm_enabled()) {
 406 #ifdef CONFIG_KVM
 407         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
 408 #endif
 409     } else {
 410         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
 411     }
 412
 413     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
 414 }
 415
 416 static QEMUMachine heathrow_machine = {
 417     .name = "g3beige",
 418     .desc = "Heathrow based PowerMAC",
 419     .init = ppc_heathrow_init,
 420     .max_cpus = MAX_CPUS,
 421 #ifndef TARGET_PPC64
 422     .is_default = 1,
 423 #endif
 424 };
 425
 426 static void heathrow_machine_init(void)
 427 {
 428     qemu_register_machine(&heathrow_machine);
 429 }
 430
 431 machine_init(heathrow_machine_init);