diff options
Diffstat (limited to 'hw/ppc_chrp.c')
| -rw-r--r-- | hw/ppc_chrp.c | 566 |
1 files changed, 566 insertions, 0 deletions
diff --git a/hw/ppc_chrp.c b/hw/ppc_chrp.c new file mode 100644 index 0000000..42d5995 --- /dev/null +++ b/hw/ppc_chrp.c @@ -0,0 +1,566 @@ +/* + * QEMU PPC CHRP/PMAC hardware System Emulator + * + * Copyright (c) 2004 Fabrice Bellard + * + * 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" + +#define BIOS_FILENAME "ppc_rom.bin" +#define VGABIOS_FILENAME "video.x" +#define NVRAM_SIZE 0x2000 + +#define KERNEL_LOAD_ADDR 0x01000000 +#define INITRD_LOAD_ADDR 0x01800000 + +/* MacIO devices (mapped inside the MacIO address space): CUDA, DBDMA, + NVRAM */ + +static int dbdma_mem_index; +static int cuda_mem_index; +static int ide0_mem_index = -1; +static int ide1_mem_index = -1; +static int openpic_mem_index = -1; +static int heathrow_pic_mem_index = -1; +static int macio_nvram_mem_index = -1; + +/* DBDMA: currently no op - should suffice right now */ + +static void dbdma_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) +{ + printf("%s: 0x%08x <= 0x%08x\n", __func__, addr, value); +} + +static void dbdma_writew (void *opaque, target_phys_addr_t addr, uint32_t value) +{ +} + +static void dbdma_writel (void *opaque, target_phys_addr_t addr, uint32_t value) +{ +} + +static uint32_t dbdma_readb (void *opaque, target_phys_addr_t addr) +{ + printf("%s: 0x%08x => 0x00000000\n", __func__, addr); + return 0; +} + +static uint32_t dbdma_readw (void *opaque, target_phys_addr_t addr) +{ + return 0; +} + +static uint32_t dbdma_readl (void *opaque, target_phys_addr_t addr) +{ + return 0; +} + +static CPUWriteMemoryFunc *dbdma_write[] = { + &dbdma_writeb, + &dbdma_writew, + &dbdma_writel, +}; + +static CPUReadMemoryFunc *dbdma_read[] = { + &dbdma_readb, + &dbdma_readw, + &dbdma_readl, +}; + +/* macio style NVRAM device */ +typedef struct MacIONVRAMState { + uint8_t data[0x2000]; +} MacIONVRAMState; + +static void macio_nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) +{ + MacIONVRAMState *s = opaque; + addr = (addr >> 4) & 0x1fff; + s->data[addr] = value; + // printf("macio_nvram_writeb %04x = %02x\n", addr, value); +} + +static uint32_t macio_nvram_readb (void *opaque, target_phys_addr_t addr) +{ + MacIONVRAMState *s = opaque; + uint32_t value; + + addr = (addr >> 4) & 0x1fff; + value = s->data[addr]; + // printf("macio_nvram_readb %04x = %02x\n", addr, value); + return value; +} + +static CPUWriteMemoryFunc *macio_nvram_write[] = { + &macio_nvram_writeb, + &macio_nvram_writeb, + &macio_nvram_writeb, +}; + +static CPUReadMemoryFunc *macio_nvram_read[] = { + &macio_nvram_readb, + &macio_nvram_readb, + &macio_nvram_readb, +}; + +static MacIONVRAMState *macio_nvram_init(void) +{ + MacIONVRAMState *s; + s = qemu_mallocz(sizeof(MacIONVRAMState)); + if (!s) + return NULL; + macio_nvram_mem_index = cpu_register_io_memory(0, macio_nvram_read, + macio_nvram_write, s); + return s; +} + +static void macio_map(PCIDevice *pci_dev, int region_num, + uint32_t addr, uint32_t size, int type) +{ + if (heathrow_pic_mem_index >= 0) { + cpu_register_physical_memory(addr + 0x00000, 0x1000, + heathrow_pic_mem_index); + } + cpu_register_physical_memory(addr + 0x08000, 0x1000, dbdma_mem_index); + cpu_register_physical_memory(addr + 0x16000, 0x2000, cuda_mem_index); + if (ide0_mem_index >= 0) + cpu_register_physical_memory(addr + 0x1f000, 0x1000, ide0_mem_index); + if (ide1_mem_index >= 0) + cpu_register_physical_memory(addr + 0x20000, 0x1000, ide1_mem_index); + if (openpic_mem_index >= 0) { + cpu_register_physical_memory(addr + 0x40000, 0x40000, + openpic_mem_index); + } + if (macio_nvram_mem_index >= 0) + cpu_register_physical_memory(addr + 0x60000, 0x20000, macio_nvram_mem_index); +} + +static void macio_init(PCIBus *bus, int device_id) +{ + PCIDevice *d; + + d = pci_register_device(bus, "macio", sizeof(PCIDevice), + -1, NULL, NULL); + /* Note: this code is strongly inspirated from the corresponding code + in PearPC */ + d->config[0x00] = 0x6b; // vendor_id + d->config[0x01] = 0x10; + d->config[0x02] = device_id; + d->config[0x03] = device_id >> 8; + + d->config[0x0a] = 0x00; // class_sub = pci2pci + d->config[0x0b] = 0xff; // class_base = bridge + d->config[0x0e] = 0x00; // header_type + + d->config[0x3d] = 0x01; // interrupt on pin 1 + + dbdma_mem_index = cpu_register_io_memory(0, dbdma_read, dbdma_write, NULL); + + pci_register_io_region(d, 0, 0x80000, + PCI_ADDRESS_SPACE_MEM, macio_map); +} + +/* UniN device */ +static void unin_writel (void *opaque, target_phys_addr_t addr, uint32_t value) +{ +} + +static uint32_t unin_readl (void *opaque, target_phys_addr_t addr) +{ + return 0; +} + +static CPUWriteMemoryFunc *unin_write[] = { + &unin_writel, + &unin_writel, + &unin_writel, +}; + +static CPUReadMemoryFunc *unin_read[] = { + &unin_readl, + &unin_readl, + &unin_readl, +}; + +/* temporary frame buffer OSI calls for the video.x driver. The right + solution is to modify the driver to use VGA PCI I/Os */ +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=%08x\n", env->gpr[5]); + break; + } + return 1; /* osi_call handled */ +} + +/* XXX: suppress that */ +static void pic_irq_request(void *opaque, int level) +{ +} + +static uint8_t nvram_chksum(const uint8_t *buf, int n) +{ + int sum, i; + sum = 0; + for(i = 0; i < n; i++) + sum += buf[i]; + return (sum & 0xff) + (sum >> 8); +} + +/* set a free Mac OS NVRAM partition */ +void pmac_format_nvram_partition(uint8_t *buf, int len) +{ + 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 PPC_io_memory, 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 */ + PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL); + cpu_register_physical_memory(0xfe000000, 0x00200000, PPC_io_memory); + + /* 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); + vga_initialize(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]); + } + + 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 */ + PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL); + cpu_register_physical_memory(0xF2000000, 0x00800000, PPC_io_memory); + + /* 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 */ + vga_initialize(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]); + } + +#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, +}; |