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 #include "exec-memory.h"
  47
  48 #define MAX_IDE_BUS 2
  49 #define CFG_ADDR 0xf0000510
  50
  51 static int fw_cfg_boot_set(void *opaque, const char *boot_device)
  52 {
  53     fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
  54     return 0;
  55 }
  56
  57
  58 static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
  59 {
  60     return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;
  61 }
  62
  63 static target_phys_addr_t round_page(target_phys_addr_t addr)
  64 {
  65     return (addr + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;
  66 }
  67
  68 static void ppc_heathrow_init (ram_addr_t ram_size,
  69                                const char *boot_device,
  70                                const char *kernel_filename,
  71                                const char *kernel_cmdline,
  72                                const char *initrd_filename,
  73                                const char *cpu_model)
  74 {
  75     CPUState *env = NULL;
  76     char *filename;
  77     qemu_irq *pic, **heathrow_irqs;
  78     int linux_boot, i;
  79     ram_addr_t ram_offset, bios_offset;
  80     uint32_t kernel_base, initrd_base, cmdline_base = 0;
  81     int32_t kernel_size, initrd_size;
  82     PCIBus *pci_bus;
  83     MacIONVRAMState *nvr;
  84     int bios_size;
  85     MemoryRegion *pic_mem, *dbdma_mem, *cuda_mem;
  86     MemoryRegion *escc_mem, *escc_bar = g_new(MemoryRegion, 1), *ide_mem[2];
  87     uint16_t ppc_boot_device;
  88     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
  89     void *fw_cfg;
  90     void *dbdma;
  91
  92     linux_boot = (kernel_filename != NULL);
  93
  94     /* init CPUs */
  95     if (cpu_model == NULL)
  96         cpu_model = "G3";
  97     for (i = 0; i < smp_cpus; i++) {
  98         env = cpu_init(cpu_model);
  99         if (!env) {
 100             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
 101             exit(1);
 102         }
 103         /* Set time-base frequency to 16.6 Mhz */
 104         cpu_ppc_tb_init(env,  16600000UL);
 105         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
 106     }
 107
 108     /* allocate RAM */
 109     if (ram_size > (2047 << 20)) {
 110         fprintf(stderr,
 111                 "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",
 112                 ((unsigned int)ram_size / (1 << 20)));
 113         exit(1);
 114     }
 115
 116     ram_offset = qemu_ram_alloc(NULL, "ppc_heathrow.ram", ram_size);
 117     cpu_register_physical_memory(0, ram_size, ram_offset);
 118
 119     /* allocate and load BIOS */
 120     bios_offset = qemu_ram_alloc(NULL, "ppc_heathrow.bios", BIOS_SIZE);
 121     if (bios_name == NULL)
 122         bios_name = PROM_FILENAME;
 123     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 124     cpu_register_physical_memory(PROM_ADDR, BIOS_SIZE, bios_offset | IO_MEM_ROM);
 125
 126     /* Load OpenBIOS (ELF) */
 127     if (filename) {
 128         bios_size = load_elf(filename, 0, NULL, NULL, NULL, NULL,
 129                              1, ELF_MACHINE, 0);
 130         g_free(filename);
 131     } else {
 132         bios_size = -1;
 133     }
 134     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 135         hw_error("qemu: could not load PowerPC bios '%s'\n", bios_name);
 136         exit(1);
 137     }
 138
 139     if (linux_boot) {
 140         uint64_t lowaddr = 0;
 141         int bswap_needed;
 142
 143 #ifdef BSWAP_NEEDED
 144         bswap_needed = 1;
 145 #else
 146         bswap_needed = 0;
 147 #endif
 148         kernel_base = KERNEL_LOAD_ADDR;
 149         kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
 150                                NULL, &lowaddr, NULL, 1, ELF_MACHINE, 0);
 151         if (kernel_size < 0)
 152             kernel_size = load_aout(kernel_filename, kernel_base,
 153                                     ram_size - kernel_base, bswap_needed,
 154                                     TARGET_PAGE_SIZE);
 155         if (kernel_size < 0)
 156             kernel_size = load_image_targphys(kernel_filename,
 157                                               kernel_base,
 158                                               ram_size - kernel_base);
 159         if (kernel_size < 0) {
 160             hw_error("qemu: could not load kernel '%s'\n",
 161                       kernel_filename);
 162             exit(1);
 163         }
 164         /* load initrd */
 165         if (initrd_filename) {
 166             initrd_base = round_page(kernel_base + kernel_size + KERNEL_GAP);
 167             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 168                                               ram_size - initrd_base);
 169             if (initrd_size < 0) {
 170                 hw_error("qemu: could not load initial ram disk '%s'\n",
 171                          initrd_filename);
 172                 exit(1);
 173             }
 174             cmdline_base = round_page(initrd_base + initrd_size);
 175         } else {
 176             initrd_base = 0;
 177             initrd_size = 0;
 178             cmdline_base = round_page(kernel_base + kernel_size + KERNEL_GAP);
 179         }
 180         ppc_boot_device = 'm';
 181     } else {
 182         kernel_base = 0;
 183         kernel_size = 0;
 184         initrd_base = 0;
 185         initrd_size = 0;
 186         ppc_boot_device = '\0';
 187         for (i = 0; boot_device[i] != '\0'; i++) {
 188             /* TOFIX: for now, the second IDE channel is not properly
 189              *        used by OHW. The Mac floppy disk are not emulated.
 190              *        For now, OHW cannot boot from the network.
 191              */
 192 #if 0
 193             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 194                 ppc_boot_device = boot_device[i];
 195                 break;
 196             }
 197 #else
 198             if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {
 199                 ppc_boot_device = boot_device[i];
 200                 break;
 201             }
 202 #endif
 203         }
 204         if (ppc_boot_device == '\0') {
 205             fprintf(stderr, "No valid boot device for G3 Beige machine\n");
 206             exit(1);
 207         }
 208     }
 209
 210     isa_mem_base = 0x80000000;
 211
 212     /* Register 2 MB of ISA IO space */
 213     isa_mmio_init(0xfe000000, 0x00200000);
 214
 215     /* XXX: we register only 1 output pin for heathrow PIC */
 216     heathrow_irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));
 217     heathrow_irqs[0] =
 218         g_malloc0(smp_cpus * sizeof(qemu_irq) * 1);
 219     /* Connect the heathrow PIC outputs to the 6xx bus */
 220     for (i = 0; i < smp_cpus; i++) {
 221         switch (PPC_INPUT(env)) {
 222         case PPC_FLAGS_INPUT_6xx:
 223             heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);
 224             heathrow_irqs[i][0] =
 225                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];
 226             break;
 227         default:
 228             hw_error("Bus model not supported on OldWorld Mac machine\n");
 229         }
 230     }
 231
 232     /* init basic PC hardware */
 233     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 234         hw_error("Only 6xx bus is supported on heathrow machine\n");
 235     }
 236     pic = heathrow_pic_init(&pic_mem, 1, heathrow_irqs);
 237     pci_bus = pci_grackle_init(0xfec00000, pic,
 238                                get_system_memory(),
 239                                get_system_io());
 240     pci_vga_init(pci_bus);
 241
 242     escc_mem = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
 243                                serial_hds[1], ESCC_CLOCK, 4);
 244     memory_region_init_alias(escc_bar, "escc-bar",
 245                              escc_mem, 0, memory_region_size(escc_mem));
 246
 247     for(i = 0; i < nb_nics; i++)
 248         pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
 249
 250
 251     ide_drive_get(hd, MAX_IDE_BUS);
 252
 253     /* First IDE channel is a MAC IDE on the MacIO bus */
 254     dbdma = DBDMA_init(&dbdma_mem);
 255     ide_mem[0] = NULL;
 256     ide_mem[1] = pmac_ide_init(hd, pic[0x0D], dbdma, 0x16, pic[0x02]);
 257
 258     /* Second IDE channel is a CMD646 on the PCI bus */
 259     hd[0] = hd[MAX_IDE_DEVS];
 260     hd[1] = hd[MAX_IDE_DEVS + 1];
 261     hd[3] = hd[2] = NULL;
 262     pci_cmd646_ide_init(pci_bus, hd, 0);
 263
 264     /* cuda also initialize ADB */
 265     cuda_init(&cuda_mem, pic[0x12]);
 266
 267     adb_kbd_init(&adb_bus);
 268     adb_mouse_init(&adb_bus);
 269
 270     nvr = macio_nvram_init(0x2000, 4);
 271     pmac_format_nvram_partition(nvr, 0x2000);
 272
 273     macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem,
 274                dbdma_mem, cuda_mem, nvr, 2, ide_mem, escc_bar);
 275
 276     if (usb_enabled) {
 277         usb_ohci_init_pci(pci_bus, -1);
 278     }
 279
 280     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
 281         graphic_depth = 15;
 282
 283     /* No PCI init: the BIOS will do it */
 284
 285     fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
 286     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
 287     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
 288     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
 289     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
 290     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 291     if (kernel_cmdline) {
 292         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, cmdline_base);
 293         pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, kernel_cmdline);
 294     } else {
 295         fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);
 296     }
 297     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);
 298     fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 299     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);
 300
 301     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);
 302     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);
 303     fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);
 304
 305     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled());
 306     if (kvm_enabled()) {
 307 #ifdef CONFIG_KVM
 308         uint8_t *hypercall;
 309
 310         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
 311         hypercall = g_malloc(16);
 312         kvmppc_get_hypercall(env, hypercall, 16);
 313         fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);
 314         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());
 315 #endif
 316     } else {
 317         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
 318     }
 319
 320     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
 321 }
 322
 323 static QEMUMachine heathrow_machine = {
 324     .name = "g3beige",
 325     .desc = "Heathrow based PowerMAC",
 326     .init = ppc_heathrow_init,
 327     .max_cpus = MAX_CPUS,
 328 #ifndef TARGET_PPC64
 329     .is_default = 1,
 330 #endif
 331 };
 332
 333 static void heathrow_machine_init(void)
 334 {
 335     qemu_register_machine(&heathrow_machine);
 336 }
 337
 338 machine_init(heathrow_machine_init);