hw/ppc_oldworld.c

   1
   2 /*
   3  * QEMU OldWorld PowerMac (currently ~G3 Beige) hardware System Emulator
   4  *
   5  * Copyright (c) 2004-2007 Fabrice Bellard
   6  * Copyright (c) 2007 Jocelyn Mayer
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24  * THE SOFTWARE.
  25  */
  26 #include "hw.h"
  27 #include "ppc.h"
  28 #include "ppc_mac.h"
  29 #include "mac_dbdma.h"
  30 #include "nvram.h"
  31 #include "pc.h"
  32 #include "sysemu.h"
  33 #include "net.h"
  34 #include "isa.h"
  35 #include "pci.h"
  36 #include "usb-ohci.h"
  37 #include "boards.h"
  38 #include "fw_cfg.h"
  39 #include "escc.h"
  40 #include "ide.h"
  41 #include "loader.h"
  42 #include "elf.h"
  43 #include "kvm.h"
  44 #include "kvm_ppc.h"
  45 #include "blockdev.h"
  46
  47 #define MAX_IDE_BUS 2
  48 #define CFG_ADDR 0xf0000510
  49
  50 static int fw_cfg_boot_set(void *opaque, const char *boot_device)
  51 {
  52     fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
  53     return 0;
  54 }
  55
  56
  57 static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
  58 {
  59     return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;
  60 }
  61
  62 static void ppc_heathrow_init (ram_addr_t ram_size,
  63                                const char *boot_device,
  64                                const char *kernel_filename,
  65                                const char *kernel_cmdline,
  66                                const char *initrd_filename,
  67                                const char *cpu_model)
  68 {
  69     CPUState *env = NULL;
  70     char *filename;
  71     qemu_irq *pic, **heathrow_irqs;
  72     int linux_boot, i;
  73     ram_addr_t ram_offset, bios_offset;
  74     uint32_t kernel_base, initrd_base;
  75     int32_t kernel_size, initrd_size;
  76     PCIBus *pci_bus;
  77     MacIONVRAMState *nvr;
  78     int bios_size;
  79     int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index;
  80     int escc_mem_index, ide_mem_index[2];
  81     uint16_t ppc_boot_device;
  82     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
  83     void *fw_cfg;
  84     void *dbdma;
  85
  86     linux_boot = (kernel_filename != NULL);
  87
  88     /* init CPUs */
  89     if (cpu_model == NULL)
  90         cpu_model = "G3";
  91     for (i = 0; i < smp_cpus; i++) {
  92         env = cpu_init(cpu_model);
  93         if (!env) {
  94             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
  95             exit(1);
  96         }
  97         /* Set time-base frequency to 16.6 Mhz */
  98         cpu_ppc_tb_init(env,  16600000UL);
  99         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
 100     }
 101
 102     /* allocate RAM */
 103     if (ram_size > (2047 << 20)) {
 104         fprintf(stderr,
 105                 "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",
 106                 ((unsigned int)ram_size / (1 << 20)));
 107         exit(1);
 108     }
 109
 110     ram_offset = qemu_ram_alloc(NULL, "ppc_heathrow.ram", ram_size);
 111     cpu_register_physical_memory(0, ram_size, ram_offset);
 112
 113     /* allocate and load BIOS */
 114     bios_offset = qemu_ram_alloc(NULL, "ppc_heathrow.bios", BIOS_SIZE);
 115     if (bios_name == NULL)
 116         bios_name = PROM_FILENAME;
 117     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 118     cpu_register_physical_memory(PROM_ADDR, BIOS_SIZE, bios_offset | IO_MEM_ROM);
 119
 120     /* Load OpenBIOS (ELF) */
 121     if (filename) {
 122         bios_size = load_elf(filename, 0, NULL, NULL, NULL, NULL,
 123                              1, ELF_MACHINE, 0);
 124         qemu_free(filename);
 125     } else {
 126         bios_size = -1;
 127     }
 128     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 129         hw_error("qemu: could not load PowerPC bios '%s'\n", bios_name);
 130         exit(1);
 131     }
 132
 133     if (linux_boot) {
 134         uint64_t lowaddr = 0;
 135         int bswap_needed;
 136
 137 #ifdef BSWAP_NEEDED
 138         bswap_needed = 1;
 139 #else
 140         bswap_needed = 0;
 141 #endif
 142         kernel_base = KERNEL_LOAD_ADDR;
 143         kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
 144                                NULL, &lowaddr, NULL, 1, ELF_MACHINE, 0);
 145         if (kernel_size < 0)
 146             kernel_size = load_aout(kernel_filename, kernel_base,
 147                                     ram_size - kernel_base, bswap_needed,
 148                                     TARGET_PAGE_SIZE);
 149         if (kernel_size < 0)
 150             kernel_size = load_image_targphys(kernel_filename,
 151                                               kernel_base,
 152                                               ram_size - kernel_base);
 153         if (kernel_size < 0) {
 154             hw_error("qemu: could not load kernel '%s'\n",
 155                       kernel_filename);
 156             exit(1);
 157         }
 158         /* load initrd */
 159         if (initrd_filename) {
 160             initrd_base = INITRD_LOAD_ADDR;
 161             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 162                                               ram_size - initrd_base);
 163             if (initrd_size < 0) {
 164                 hw_error("qemu: could not load initial ram disk '%s'\n",
 165                          initrd_filename);
 166                 exit(1);
 167             }
 168         } else {
 169             initrd_base = 0;
 170             initrd_size = 0;
 171         }
 172         ppc_boot_device = 'm';
 173     } else {
 174         kernel_base = 0;
 175         kernel_size = 0;
 176         initrd_base = 0;
 177         initrd_size = 0;
 178         ppc_boot_device = '\0';
 179         for (i = 0; boot_device[i] != '\0'; i++) {
 180             /* TOFIX: for now, the second IDE channel is not properly
 181              *        used by OHW. The Mac floppy disk are not emulated.
 182              *        For now, OHW cannot boot from the network.
 183              */
 184 #if 0
 185             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 186                 ppc_boot_device = boot_device[i];
 187                 break;
 188             }
 189 #else
 190             if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {
 191                 ppc_boot_device = boot_device[i];
 192                 break;
 193             }
 194 #endif
 195         }
 196         if (ppc_boot_device == '\0') {
 197             fprintf(stderr, "No valid boot device for G3 Beige machine\n");
 198             exit(1);
 199         }
 200     }
 201
 202     isa_mem_base = 0x80000000;
 203
 204     /* Register 2 MB of ISA IO space */
 205     isa_mmio_init(0xfe000000, 0x00200000);
 206
 207     /* XXX: we register only 1 output pin for heathrow PIC */
 208     heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
 209     heathrow_irqs[0] =
 210         qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1);
 211     /* Connect the heathrow PIC outputs to the 6xx bus */
 212     for (i = 0; i < smp_cpus; i++) {
 213         switch (PPC_INPUT(env)) {
 214         case PPC_FLAGS_INPUT_6xx:
 215             heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
 216             heathrow_irqs[i][0] =
 217                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
 218             break;
 219         default:
 220             hw_error("Bus model not supported on OldWorld Mac machine\n");
 221         }
 222     }
 223
 224     /* init basic PC hardware */
 225     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 226         hw_error("Only 6xx bus is supported on heathrow machine\n");
 227     }
 228     pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
 229     pci_bus = pci_grackle_init(0xfec00000, pic);
 230     pci_vga_init(pci_bus);
 231
 232     escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
 233                                serial_hds[1], ESCC_CLOCK, 4);
 234
 235     for(i = 0; i < nb_nics; i++)
 236         pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
 237
 238
 239     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
 240         fprintf(stderr, "qemu: too many IDE bus\n");
 241         exit(1);
 242     }
 243
 244     /* First IDE channel is a MAC IDE on the MacIO bus */
 245     hd[0] = drive_get(IF_IDE, 0, 0);
 246     hd[1] = drive_get(IF_IDE, 0, 1);
 247     dbdma = DBDMA_init(&dbdma_mem_index);
 248     ide_mem_index[0] = -1;
 249     ide_mem_index[1] = pmac_ide_init(hd, pic[0x0D], dbdma, 0x16, pic[0x02]);
 250
 251     /* Second IDE channel is a CMD646 on the PCI bus */
 252     hd[0] = drive_get(IF_IDE, 1, 0);
 253     hd[1] = drive_get(IF_IDE, 1, 1);
 254     hd[3] = hd[2] = NULL;
 255     pci_cmd646_ide_init(pci_bus, hd, 0);
 256
 257     /* cuda also initialize ADB */
 258     cuda_init(&cuda_mem_index, pic[0x12]);
 259
 260     adb_kbd_init(&adb_bus);
 261     adb_mouse_init(&adb_bus);
 262
 263     nvr = macio_nvram_init(&nvram_mem_index, 0x2000, 4);
 264     pmac_format_nvram_partition(nvr, 0x2000);
 265
 266     macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem_index,
 267                dbdma_mem_index, cuda_mem_index, nvr, 2, ide_mem_index,
 268                escc_mem_index);
 269
 270     if (usb_enabled) {
 271         usb_ohci_init_pci(pci_bus, -1);
 272     }
 273
 274     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
 275         graphic_depth = 15;
 276
 277     /* No PCI init: the BIOS will do it */
 278
 279     fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
 280     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
 281     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
 282     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
 283     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
 284     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 285     if (kernel_cmdline) {
 286         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);
 287         pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);
 288     } else {
 289         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
 290     }
 291     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
 292     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 293     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
 294
 295     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
 296     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
 297     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
 298
 299     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled());
 300     if (kvm_enabled()) {
 301 #ifdef CONFIG_KVM
 302         uint8_t *hypercall;
 303
 304         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
 305         hypercall = qemu_malloc(16);
 306         kvmppc_get_hypercall(env, hypercall, 16);
 307         fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);
 308         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());
 309 #endif
 310     } else {
 311         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
 312     }
 313
 314     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
 315 }
 316
 317 static QEMUMachine heathrow_machine = {
 318     .name = "g3beige",
 319     .desc = "Heathrow based PowerMAC",
 320     .init = ppc_heathrow_init,
 321     .max_cpus = MAX_CPUS,
 322 #ifndef TARGET_PPC64
 323     .is_default = 1,
 324 #endif
 325 };
 326
 327 static void heathrow_machine_init(void)
 328 {
 329     qemu_register_machine(&heathrow_machine);
 330 }
 331
 332 machine_init(heathrow_machine_init);