ppc_chrp.c

xen虚拟机源代码安装包

    char partition_name[12] = "wwwwwwwwwwww";
    
    buf[0] = 0x7f; /* free partition magic */
    buf[1] = 0; /* checksum */
    buf[2] = len >> 8;
    buf[3] = len;
    memcpy(buf + 4, partition_name, 12);
    buf[1] = nvram_chksum(buf, 16);
}    

/* PowerPC CHRP hardware initialisation */
static void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
                          DisplayState *ds, const char **fd_filename, 
                          int snapshot,
                          const char *kernel_filename, 
                          const char *kernel_cmdline,
                          const char *initrd_filename,
                          int is_heathrow)
{
    CPUState *env;
    char buf[1024];
    SetIRQFunc *set_irq;
    void *pic;
    m48t59_t *nvram;
    int unin_memory;
    int linux_boot, i;
    unsigned long bios_offset, vga_bios_offset;
    uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
    ppc_def_t *def;
    PCIBus *pci_bus;
    const char *arch_name;
    int vga_bios_size, bios_size;

    linux_boot = (kernel_filename != NULL);

    /* init CPUs */
    env = cpu_init();
    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);

    /* Register CPU as a 74x/75x */
    /* XXX: CPU model (or PVR) should be provided on command line */
    //    ppc_find_by_name("750gx", &def); // Linux boot OK
    //    ppc_find_by_name("750fx", &def); // Linux boot OK
    /* Linux does not boot on 750cxe (and probably other 750cx based)
     * because it assumes it has 8 IBAT & DBAT pairs as it only have 4.
     */
    //    ppc_find_by_name("750cxe", &def);
    //    ppc_find_by_name("750p", &def);
    //    ppc_find_by_name("740p", &def);
    ppc_find_by_name("750", &def);
    //    ppc_find_by_name("740", &def);
    //    ppc_find_by_name("G3", &def);
    //    ppc_find_by_name("604r", &def);
    //    ppc_find_by_name("604e", &def);
    //    ppc_find_by_name("604", &def);
    if (def == NULL) {
        cpu_abort(env, "Unable to find PowerPC CPU definition\n");
    }
    cpu_ppc_register(env, def);

    /* Set time-base frequency to 100 Mhz */
    cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
    
    env->osi_call = vga_osi_call;

    /* allocate RAM */
    cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);

    /* allocate and load BIOS */
    bios_offset = ram_size + vga_ram_size;
    snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
    bios_size = load_image(buf, phys_ram_base + bios_offset);
    if (bios_size < 0 || bios_size > BIOS_SIZE) {
        fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n", buf);
        exit(1);
    }
    bios_size = (bios_size + 0xfff) & ~0xfff;
    cpu_register_physical_memory((uint32_t)(-bios_size), 
                                 bios_size, bios_offset | IO_MEM_ROM);
    
    /* allocate and load VGA BIOS */
    vga_bios_offset = bios_offset + bios_size;
    snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
    vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);
    if (vga_bios_size < 0) {
        /* if no bios is present, we can still work */
        fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);
        vga_bios_size = 0;
    } else {
        /* set a specific header (XXX: find real Apple format for NDRV
           drivers) */
        phys_ram_base[vga_bios_offset] = 'N';
        phys_ram_base[vga_bios_offset + 1] = 'D';
        phys_ram_base[vga_bios_offset + 2] = 'R';
        phys_ram_base[vga_bios_offset + 3] = 'V';
        cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4), 
                     vga_bios_size);
        vga_bios_size += 8;
    }
    vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff;
    
    if (linux_boot) {
        kernel_base = KERNEL_LOAD_ADDR;
        /* now we can load the kernel */
        kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n", 
                    kernel_filename);
            exit(1);
        }
        /* load initrd */
        if (initrd_filename) {
            initrd_base = INITRD_LOAD_ADDR;
            initrd_size = load_image(initrd_filename,
                                     phys_ram_base + initrd_base);
            if (initrd_size < 0) {
                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 
                        initrd_filename);
                exit(1);
            }
        } else {
            initrd_base = 0;
            initrd_size = 0;
        }
        boot_device = 'm';
    } else {
        kernel_base = 0;
        kernel_size = 0;
        initrd_base = 0;
        initrd_size = 0;
    }

    if (is_heathrow) {
        isa_mem_base = 0x80000000;
        
        /* Register 2 MB of ISA IO space */
        isa_mmio_init(0xfe000000, 0x00200000);

        /* init basic PC hardware */
        pic = heathrow_pic_init(&heathrow_pic_mem_index);
        set_irq = heathrow_pic_set_irq;
        pci_bus = pci_grackle_init(0xfec00000, pic);
        pci_vga_init(pci_bus, ds, phys_ram_base + ram_size, 
                     ram_size, vga_ram_size,
                     vga_bios_offset, vga_bios_size);

        /* XXX: suppress that */
        isa_pic = pic_init(pic_irq_request, NULL);
        
        /* XXX: use Mac Serial port */
        serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
        
        for(i = 0; i < nb_nics; i++) {
            if (!nd_table[i].model)
                nd_table[i].model = "ne2k_pci";
            pci_nic_init(pci_bus, &nd_table[i], -1);
        }
        
        pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);

        /* cuda also initialize ADB */
        cuda_mem_index = cuda_init(set_irq, pic, 0x12);
        
        adb_kbd_init(&adb_bus);
        adb_mouse_init(&adb_bus);
        
        {
            MacIONVRAMState *nvr;
            nvr = macio_nvram_init();
            pmac_format_nvram_partition(nvr->data, 0x2000);
        }

        macio_init(pci_bus, 0x0017);
        
        nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
        
        arch_name = "HEATHROW";
    } else {
        isa_mem_base = 0x80000000;
        
        /* Register 8 MB of ISA IO space */
        isa_mmio_init(0xf2000000, 0x00800000);
        
        /* UniN init */
        unin_memory = cpu_register_io_memory(0, unin_read, unin_write, NULL);
        cpu_register_physical_memory(0xf8000000, 0x00001000, unin_memory);

        pic = openpic_init(NULL, &openpic_mem_index, 1, &env);
        set_irq = openpic_set_irq;
        pci_bus = pci_pmac_init(pic);
        /* init basic PC hardware */
        pci_vga_init(pci_bus, ds, phys_ram_base + ram_size,
                     ram_size, vga_ram_size,
                     vga_bios_offset, vga_bios_size);

        /* XXX: suppress that */
        isa_pic = pic_init(pic_irq_request, NULL);
        
        /* XXX: use Mac Serial port */
        serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
        
        for(i = 0; i < nb_nics; i++) {
            pci_ne2000_init(pci_bus, &nd_table[i], -1);
        }
        
#if 1
        ide0_mem_index = pmac_ide_init(&bs_table[0], set_irq, pic, 0x13);
        ide1_mem_index = pmac_ide_init(&bs_table[2], set_irq, pic, 0x14);
#else
        pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
#endif
        /* cuda also initialize ADB */
        cuda_mem_index = cuda_init(set_irq, pic, 0x19);
        
        adb_kbd_init(&adb_bus);
        adb_mouse_init(&adb_bus);
        
        macio_init(pci_bus, 0x0022);
        
        nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
        
        arch_name = "MAC99";
    }

    if (usb_enabled) {
        usb_ohci_init(pci_bus, 3, -1);
    }

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

    PPC_NVRAM_set_params(nvram, NVRAM_SIZE, arch_name, ram_size, boot_device,
                         kernel_base, kernel_size,
                         kernel_cmdline,
                         initrd_base, initrd_size,
                         /* XXX: need an option to load a NVRAM image */
                         0,
                         graphic_width, graphic_height, graphic_depth);
    /* No PCI init: the BIOS will do it */

    /* Special port to get debug messages from Open-Firmware */
    register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
}

static void ppc_core99_init(int ram_size, int vga_ram_size, int boot_device,
                            DisplayState *ds, const char **fd_filename, 
                            int snapshot,
                            const char *kernel_filename, 
                            const char *kernel_cmdline,
                            const char *initrd_filename)
{
    ppc_chrp_init(ram_size, vga_ram_size, boot_device,
                  ds, fd_filename, snapshot,
                  kernel_filename, kernel_cmdline,
                  initrd_filename, 0);
}
    
static void ppc_heathrow_init(int ram_size, int vga_ram_size, int boot_device,
                              DisplayState *ds, const char **fd_filename, 
                              int snapshot,
                              const char *kernel_filename, 
                              const char *kernel_cmdline,
                              const char *initrd_filename)
{
    ppc_chrp_init(ram_size, vga_ram_size, boot_device,
                  ds, fd_filename, snapshot,
                  kernel_filename, kernel_cmdline,
                  initrd_filename, 1);
}

QEMUMachine core99_machine = {
    "mac99",
    "Mac99 based PowerMAC",
    ppc_core99_init,
};

QEMUMachine heathrow_machine = {
    "g3bw",
    "Heathrow based PowerMAC",
    ppc_heathrow_init,
};