| /* |
| * QEMU OldWorld PowerMac (currently ~G3 B&W) hardware System Emulator |
| * |
| * Copyright (c) 2004-2007 Fabrice Bellard |
| * Copyright (c) 2007 Jocelyn Mayer |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include "vl.h" |
| #include "ppc_mac.h" |
| |
| /* temporary frame buffer OSI calls for the video.x driver. The right |
| solution is to modify the driver to use VGA PCI I/Os */ |
| /* XXX: to be removed. This is no way related to emulation */ |
| static int vga_osi_call (CPUState *env) |
| { |
| static int vga_vbl_enabled; |
| int linesize; |
| |
| // printf("osi_call R5=%d\n", env->gpr[5]); |
| |
| /* same handler as PearPC, coming from the original MOL video |
| driver. */ |
| switch(env->gpr[5]) { |
| case 4: |
| break; |
| case 28: /* set_vmode */ |
| if (env->gpr[6] != 1 || env->gpr[7] != 0) |
| env->gpr[3] = 1; |
| else |
| env->gpr[3] = 0; |
| break; |
| case 29: /* get_vmode_info */ |
| if (env->gpr[6] != 0) { |
| if (env->gpr[6] != 1 || env->gpr[7] != 0) { |
| env->gpr[3] = 1; |
| break; |
| } |
| } |
| env->gpr[3] = 0; |
| env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */ |
| env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */ |
| env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */ |
| env->gpr[7] = 85 << 16; /* refresh rate */ |
| env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */ |
| linesize = ((graphic_depth + 7) >> 3) * graphic_width; |
| linesize = (linesize + 3) & ~3; |
| env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */ |
| break; |
| case 31: /* set_video power */ |
| env->gpr[3] = 0; |
| break; |
| case 39: /* video_ctrl */ |
| if (env->gpr[6] == 0 || env->gpr[6] == 1) |
| vga_vbl_enabled = env->gpr[6]; |
| env->gpr[3] = 0; |
| break; |
| case 47: |
| break; |
| case 59: /* set_color */ |
| /* R6 = index, R7 = RGB */ |
| env->gpr[3] = 0; |
| break; |
| case 64: /* get color */ |
| /* R6 = index */ |
| env->gpr[3] = 0; |
| break; |
| case 116: /* set hwcursor */ |
| /* R6 = x, R7 = y, R8 = visible, R9 = data */ |
| break; |
| default: |
| fprintf(stderr, "unsupported OSI call R5=" REGX "\n", env->gpr[5]); |
| break; |
| } |
| |
| return 1; /* osi_call handled */ |
| } |
| |
| static void ppc_heathrow_init (int ram_size, int vga_ram_size, |
| const char *boot_device, DisplayState *ds, |
| const char **fd_filename, int snapshot, |
| const char *kernel_filename, |
| const char *kernel_cmdline, |
| const char *initrd_filename, |
| const char *cpu_model) |
| { |
| CPUState *env = NULL, *envs[MAX_CPUS]; |
| char buf[1024]; |
| qemu_irq *pic, **heathrow_irqs; |
| nvram_t nvram; |
| m48t59_t *m48t59; |
| int linux_boot, i; |
| unsigned long bios_offset, vga_bios_offset; |
| uint32_t kernel_base, kernel_size, initrd_base, initrd_size; |
| PCIBus *pci_bus; |
| MacIONVRAMState *nvr; |
| int vga_bios_size, bios_size; |
| qemu_irq *dummy_irq; |
| int pic_mem_index, nvram_mem_index, dbdma_mem_index, cuda_mem_index; |
| int ide_mem_index[2]; |
| int ppc_boot_device; |
| |
| linux_boot = (kernel_filename != NULL); |
| |
| /* init CPUs */ |
| if (cpu_model == NULL) |
| cpu_model = "default"; |
| for (i = 0; i < smp_cpus; i++) { |
| env = cpu_init(cpu_model); |
| if (!env) { |
| fprintf(stderr, "Unable to find PowerPC CPU definition\n"); |
| exit(1); |
| } |
| /* Set time-base frequency to 100 Mhz */ |
| cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL); |
| env->osi_call = vga_osi_call; |
| qemu_register_reset(&cpu_ppc_reset, env); |
| register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); |
| envs[i] = env; |
| } |
| if (env->nip < 0xFFF80000) { |
| /* Special test for PowerPC 601: |
| * the boot vector is at 0xFFF00100, then we need a 1MB BIOS. |
| * But the NVRAM is located at 0xFFF04000... |
| */ |
| cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n"); |
| } |
| |
| /* allocate RAM */ |
| cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); |
| |
| /* allocate and load BIOS */ |
| bios_offset = ram_size + vga_ram_size; |
| if (bios_name == NULL) |
| bios_name = BIOS_FILENAME; |
| snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); |
| bios_size = load_image(buf, phys_ram_base + bios_offset); |
| if (bios_size < 0 || bios_size > BIOS_SIZE) { |
| cpu_abort(env, "qemu: could not load PowerPC bios '%s'\n", buf); |
| exit(1); |
| } |
| bios_size = (bios_size + 0xfff) & ~0xfff; |
| if (bios_size > 0x00080000) { |
| /* As the NVRAM is located at 0xFFF04000, we cannot use 1 MB BIOSes */ |
| cpu_abort(env, "G3BW Mac hardware can not handle 1 MB BIOS\n"); |
| } |
| 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) { |
| cpu_abort(env, "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) { |
| cpu_abort(env, "qemu: could not load initial ram disk '%s'\n", |
| initrd_filename); |
| exit(1); |
| } |
| } else { |
| initrd_base = 0; |
| initrd_size = 0; |
| } |
| ppc_boot_device = 'm'; |
| } else { |
| kernel_base = 0; |
| kernel_size = 0; |
| initrd_base = 0; |
| initrd_size = 0; |
| ppc_boot_device = '\0'; |
| for (i = 0; boot_device[i] != '\0'; i++) { |
| /* TOFIX: for now, the second IDE channel is not properly |
| * used by OHW. The Mac floppy disk are not emulated. |
| * For now, OHW cannot boot from the network. |
| */ |
| #if 0 |
| if (boot_device[i] >= 'a' && boot_device[i] <= 'f') { |
| ppc_boot_device = boot_device[i]; |
| break; |
| } |
| #else |
| if (boot_device[i] >= 'c' && boot_device[i] <= 'd') { |
| ppc_boot_device = boot_device[i]; |
| break; |
| } |
| #endif |
| } |
| if (ppc_boot_device == '\0') { |
| fprintf(stderr, "No valid boot device for Mac99 machine\n"); |
| exit(1); |
| } |
| } |
| |
| isa_mem_base = 0x80000000; |
| |
| /* Register 2 MB of ISA IO space */ |
| isa_mmio_init(0xfe000000, 0x00200000); |
| |
| /* XXX: we register only 1 output pin for heathrow PIC */ |
| heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *)); |
| heathrow_irqs[0] = |
| qemu_mallocz(smp_cpus * sizeof(qemu_irq) * 1); |
| /* Connect the heathrow PIC outputs to the 6xx bus */ |
| for (i = 0; i < smp_cpus; i++) { |
| switch (PPC_INPUT(env)) { |
| case PPC_FLAGS_INPUT_6xx: |
| heathrow_irqs[i] = heathrow_irqs[0] + (i * 1); |
| heathrow_irqs[i][0] = |
| ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT]; |
| break; |
| default: |
| cpu_abort(env, "Bus model not supported on OldWorld Mac machine\n"); |
| exit(1); |
| } |
| } |
| |
| /* init basic PC hardware */ |
| if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { |
| cpu_abort(env, "Only 6xx bus is supported on heathrow machine\n"); |
| exit(1); |
| } |
| pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs); |
| 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 */ |
| dummy_irq = i8259_init(NULL); |
| |
| /* XXX: use Mac Serial port */ |
| serial_init(0x3f8, dummy_irq[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); |
| } |
| |
| /* First IDE channel is a CMD646 on the PCI bus */ |
| pci_cmd646_ide_init(pci_bus, &bs_table[0], 0); |
| /* Second IDE channel is a MAC IDE on the MacIO bus */ |
| ide_mem_index[0] = -1; |
| ide_mem_index[1] = pmac_ide_init(&bs_table[2], pic[0x0D]); |
| |
| /* cuda also initialize ADB */ |
| cuda_init(&cuda_mem_index, pic[0x12]); |
| |
| adb_kbd_init(&adb_bus); |
| adb_mouse_init(&adb_bus); |
| |
| nvr = macio_nvram_init(&nvram_mem_index, 0x2000); |
| pmac_format_nvram_partition(nvr, 0x2000); |
| |
| dbdma_init(&dbdma_mem_index); |
| |
| macio_init(pci_bus, 0x0017, 1, pic_mem_index, dbdma_mem_index, |
| cuda_mem_index, nvr, 2, ide_mem_index); |
| |
| if (usb_enabled) { |
| usb_ohci_init_pci(pci_bus, 3, -1); |
| } |
| |
| if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8) |
| graphic_depth = 15; |
| |
| m48t59 = m48t59_init(dummy_irq[8], 0xFFF04000, 0x0074, NVRAM_SIZE, 59); |
| nvram.opaque = m48t59; |
| nvram.read_fn = &m48t59_read; |
| nvram.write_fn = &m48t59_write; |
| PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "HEATHROW", ram_size, |
| ppc_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); |
| } |
| |
| QEMUMachine heathrow_machine = { |
| "g3bw", |
| "Heathrow based PowerMAC", |
| ppc_heathrow_init, |
| }; |
