1 /*

     2  * QEMU PowerPC CHRP (currently NewWorld PowerMac) 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 "nvram.h"

    29 #include "pc.h"

    30 #include "pci.h"

    31 #include "net.h"

    32 #include "sysemu.h"

    33 #include "boards.h"

    34 

    35 #define MAX_IDE_BUS 2

    36 

    37 /* UniN device */

    38 static void unin_writel (void *opaque, target_phys_addr_t addr, uint32_t value)

    39 {

    40 }

    41 

    42 static uint32_t unin_readl (void *opaque, target_phys_addr_t addr)

    43 {

    44     return 0;

    45 }

    46 

    47 static CPUWriteMemoryFunc *unin_write[] = {

    48     &unin_writel,

    49     &unin_writel,

    50     &unin_writel,

    51 };

    52 

    53 static CPUReadMemoryFunc *unin_read[] = {

    54     &unin_readl,

    55     &unin_readl,

    56     &unin_readl,

    57 };

    58 

    59 /* PowerPC Mac99 hardware initialisation */

    60 static void ppc_core99_init (ram_addr_t ram_size, int vga_ram_size,

    61                              const char *boot_device, DisplayState *ds,

    62                              const char *kernel_filename,

    63                              const char *kernel_cmdline,

    64                              const char *initrd_filename,

    65                              const char *cpu_model)

    66 {

    67     CPUState *env = NULL, *envs[MAX_CPUS];

    68     char buf[1024];

    69     qemu_irq *pic, **openpic_irqs;

    70     int unin_memory;

    71     int linux_boot, i;

    72     unsigned long bios_offset, vga_bios_offset;

    73     uint32_t kernel_base, kernel_size, initrd_base, initrd_size;

    74     PCIBus *pci_bus;

    75     nvram_t nvram;

    76 #if 0

    77     MacIONVRAMState *nvr;

    78     int nvram_mem_index;

    79 #endif

    80     m48t59_t *m48t59;

    81     int vga_bios_size, bios_size;

    82     qemu_irq *dummy_irq;

    83     int pic_mem_index, dbdma_mem_index, cuda_mem_index;

    84     int ide_mem_index[2];

    85     int ppc_boot_device;

    86     int index;

    87     BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];

    88 

    89     linux_boot = (kernel_filename != NULL);

    90 

    91     /* init CPUs */

    92     if (cpu_model == NULL)

    93         cpu_model = "default";

    94     for (i = 0; i < smp_cpus; i++) {

    95         env = cpu_init(cpu_model);

    96         if (!env) {

    97             fprintf(stderr, "Unable to find PowerPC CPU definition\n");

    98             exit(1);

    99         }

   100         /* Set time-base frequency to 100 Mhz */

   101         cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);

   102 #if 0

   103         env->osi_call = vga_osi_call;

   104 #endif

   105         qemu_register_reset(&cpu_ppc_reset, env);

   106         envs[i] = env;

   107     }

   108     if (env->nip < 0xFFF80000) {

   109         /* Special test for PowerPC 601:

   110          * the boot vector is at 0xFFF00100, then we need a 1MB BIOS.

   111          * But the NVRAM is located at 0xFFF04000...

   112          */

   113         cpu_abort(env, "Mac99 hardware can not handle 1 MB BIOS\n");

   114     }

   115 

   116     /* allocate RAM */

   117     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);

   118 

   119     /* allocate and load BIOS */

   120     bios_offset = ram_size + vga_ram_size;

   121     if (bios_name == NULL)

   122         bios_name = BIOS_FILENAME;

   123     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);

   124     bios_size = load_image(buf, phys_ram_base + bios_offset);

   125     if (bios_size < 0 || bios_size > BIOS_SIZE) {

   126         cpu_abort(env, "qemu: could not load PowerPC bios '%s'\n", buf);

   127         exit(1);

   128     }

   129     bios_size = (bios_size + 0xfff) & ~0xfff;

   130     if (bios_size > 0x00080000) {

   131         /* As the NVRAM is located at 0xFFF04000, we cannot use 1 MB BIOSes */

   132         cpu_abort(env, "Mac99 hardware can not handle 1 MB BIOS\n");

   133     }

   134     cpu_register_physical_memory((uint32_t)(-bios_size),

   135                                  bios_size, bios_offset | IO_MEM_ROM);

   136 

   137     /* allocate and load VGA BIOS */

   138     vga_bios_offset = bios_offset + bios_size;

   139     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);

   140     vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);

   141     if (vga_bios_size < 0) {

   142         /* if no bios is present, we can still work */

   143         fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);

   144         vga_bios_size = 0;

   145     } else {

   146         /* set a specific header (XXX: find real Apple format for NDRV

   147            drivers) */

   148         phys_ram_base[vga_bios_offset] = 'N';

   149         phys_ram_base[vga_bios_offset + 1] = 'D';

   150         phys_ram_base[vga_bios_offset + 2] = 'R';

   151         phys_ram_base[vga_bios_offset + 3] = 'V';

   152         cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4),

   153                      vga_bios_size);

   154         vga_bios_size += 8;

   155     }

   156     vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff;

   157 

   158     if (linux_boot) {

   159         kernel_base = KERNEL_LOAD_ADDR;

   160         /* now we can load the kernel */

   161         kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);

   162         if (kernel_size < 0) {

   163             cpu_abort(env, "qemu: could not load kernel '%s'\n",

   164                       kernel_filename);

   165             exit(1);

   166         }

   167         /* load initrd */

   168         if (initrd_filename) {

   169             initrd_base = INITRD_LOAD_ADDR;

   170             initrd_size = load_image(initrd_filename,

   171                                      phys_ram_base + initrd_base);

   172             if (initrd_size < 0) {

   173                 cpu_abort(env, "qemu: could not load initial ram disk '%s'\n",

   174                           initrd_filename);

   175                 exit(1);

   176             }

   177         } else {

   178             initrd_base = 0;

   179             initrd_size = 0;

   180         }

   181         ppc_boot_device = 'm';

   182     } else {

   183         kernel_base = 0;

   184         kernel_size = 0;

   185         initrd_base = 0;

   186         initrd_size = 0;

   187         ppc_boot_device = '\0';

   188         /* We consider that NewWorld PowerMac never have any floppy drive

   189          * For now, OHW cannot boot from the network.

   190          */

   191         for (i = 0; boot_device[i] != '\0'; i++) {

   192             if (boot_device[i] >= 'c' && boot_device[i] <= 'f') {

   193                 ppc_boot_device = boot_device[i];

   194                 break;

   195             }

   196         }

   197         if (ppc_boot_device == '\0') {

   198             fprintf(stderr, "No valid boot device for Mac99 machine\n");

   199             exit(1);

   200         }

   201     }

   202 

   203     isa_mem_base = 0x80000000;

   204 

   205     /* Register 8 MB of ISA IO space */

   206     isa_mmio_init(0xf2000000, 0x00800000);

   207 

   208     /* UniN init */

   209     unin_memory = cpu_register_io_memory(0, unin_read, unin_write, NULL);

   210     cpu_register_physical_memory(0xf8000000, 0x00001000, unin_memory);

   211 

   212     openpic_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));

   213     openpic_irqs[0] =

   214         qemu_mallocz(smp_cpus * sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);

   215     for (i = 0; i < smp_cpus; i++) {

   216         /* Mac99 IRQ connection between OpenPIC outputs pins

   217          * and PowerPC input pins

   218          */

   219         switch (PPC_INPUT(env)) {

   220         case PPC_FLAGS_INPUT_6xx:

   221             openpic_irqs[i] = openpic_irqs[0] + (i * OPENPIC_OUTPUT_NB);

   222             openpic_irqs[i][OPENPIC_OUTPUT_INT] =

   223                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];

   224             openpic_irqs[i][OPENPIC_OUTPUT_CINT] =

   225                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];

   226             openpic_irqs[i][OPENPIC_OUTPUT_MCK] =

   227                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_MCP];

   228             /* Not connected ? */

   229             openpic_irqs[i][OPENPIC_OUTPUT_DEBUG] = NULL;

   230             /* Check this */

   231             openpic_irqs[i][OPENPIC_OUTPUT_RESET] =

   232                 ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_HRESET];

   233             break;

   234 #if defined(TARGET_PPC64)

   235         case PPC_FLAGS_INPUT_970:

   236             openpic_irqs[i] = openpic_irqs[0] + (i * OPENPIC_OUTPUT_NB);

   237             openpic_irqs[i][OPENPIC_OUTPUT_INT] =

   238                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_INT];

   239             openpic_irqs[i][OPENPIC_OUTPUT_CINT] =

   240                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_INT];

   241             openpic_irqs[i][OPENPIC_OUTPUT_MCK] =

   242                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_MCP];

   243             /* Not connected ? */

   244             openpic_irqs[i][OPENPIC_OUTPUT_DEBUG] = NULL;

   245             /* Check this */

   246             openpic_irqs[i][OPENPIC_OUTPUT_RESET] =

   247                 ((qemu_irq *)env->irq_inputs)[PPC970_INPUT_HRESET];

   248             break;

   249 #endif /* defined(TARGET_PPC64) */

   250         default:

   251             cpu_abort(env, "Bus model not supported on mac99 machine\n");

   252             exit(1);

   253         }

   254     }

   255     pic = openpic_init(NULL, &pic_mem_index, smp_cpus, openpic_irqs, NULL);

   256     pci_bus = pci_pmac_init(pic);

   257     /* init basic PC hardware */

   258     pci_vga_init(pci_bus, ds, phys_ram_base + ram_size,

   259                  ram_size, vga_ram_size,

   260                  vga_bios_offset, vga_bios_size);

   261 

   262     /* XXX: suppress that */

   263     dummy_irq = i8259_init(NULL);

   264 

   265     /* XXX: use Mac Serial port */

   266     serial_init(0x3f8, dummy_irq[4], 115200, serial_hds[0]);

   267     for(i = 0; i < nb_nics; i++) {

   268         if (!nd_table[i].model)

   269             nd_table[i].model = "ne2k_pci";

   270         pci_nic_init(pci_bus, &nd_table[i], -1);

   271     }

   272     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {

   273         fprintf(stderr, "qemu: too many IDE bus\n");

   274         exit(1);

   275     }

   276     for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {

   277         index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);

   278         if (index != -1)

   279             hd[i] = drives_table[index].bdrv;

   280         else

   281             hd[i] = NULL;

   282     }

   283 #if 1

   284     ide_mem_index[0] = pmac_ide_init(&hd[0], pic[0x13]);

   285     ide_mem_index[1] = pmac_ide_init(&hd[2], pic[0x14]);

   286 #else

   287     pci_cmd646_ide_init(pci_bus, &hd[0], 0);

   288 #endif

   289     /* cuda also initialize ADB */

   290     cuda_init(&cuda_mem_index, pic[0x19]);

   291 

   292     adb_kbd_init(&adb_bus);

   293     adb_mouse_init(&adb_bus);

   294 

   295     dbdma_init(&dbdma_mem_index);

   296 

   297     macio_init(pci_bus, 0x0022, 0, pic_mem_index, dbdma_mem_index,

   298                cuda_mem_index, NULL, 2, ide_mem_index);

   299 

   300     if (usb_enabled) {

   301         usb_ohci_init_pci(pci_bus, 3, -1);

   302     }

   303 

   304     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)

   305         graphic_depth = 15;

   306 #if 0 /* XXX: this is ugly but needed for now, or OHW won't boot */

   307     /* The NewWorld NVRAM is not located in the MacIO device */

   308     nvr = macio_nvram_init(&nvram_mem_index, 0x2000);

   309     pmac_format_nvram_partition(nvr, 0x2000);

   310     macio_nvram_map(nvr, 0xFFF04000);

   311     nvram.opaque = nvr;

   312     nvram.read_fn = &macio_nvram_read;

   313     nvram.write_fn = &macio_nvram_write;

   314 #else

   315     m48t59 = m48t59_init(dummy_irq[8], 0xFFF04000, 0x0074, NVRAM_SIZE, 59);

   316     nvram.opaque = m48t59;

   317     nvram.read_fn = &m48t59_read;

   318     nvram.write_fn = &m48t59_write;

   319 #endif

   320     PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "MAC99", ram_size,

   321                          ppc_boot_device, kernel_base, kernel_size,

   322                          kernel_cmdline,

   323                          initrd_base, initrd_size,

   324                          /* XXX: need an option to load a NVRAM image */

   325                          0,

   326                          graphic_width, graphic_height, graphic_depth);

   327     /* No PCI init: the BIOS will do it */

   328 

   329     /* Special port to get debug messages from Open-Firmware */

   330     register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);

   331 }

   332 

   333 QEMUMachine core99_machine = {

   334     .name = "mac99",

   335     .desc = "Mac99 based PowerMAC",

   336     .init = ppc_core99_init,

   337     .ram_require = BIOS_SIZE + VGA_RAM_SIZE,

   338     .max_cpus = MAX_CPUS,

   339 };