| /* |
| * QEMU PPC PREP hardware System Emulator |
| * |
| * Copyright (c) 2003-2007 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 "hw/hw.h" |
| #include "hw/timer/m48t59.h" |
| #include "hw/i386/pc.h" |
| #include "hw/char/serial.h" |
| #include "hw/block/fdc.h" |
| #include "net/net.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/isa/isa.h" |
| #include "hw/pci/pci.h" |
| #include "hw/pci/pci_host.h" |
| #include "hw/ppc/ppc.h" |
| #include "hw/boards.h" |
| #include "qemu/log.h" |
| #include "hw/ide.h" |
| #include "hw/loader.h" |
| #include "hw/timer/mc146818rtc.h" |
| #include "hw/isa/pc87312.h" |
| #include "sysemu/block-backend.h" |
| #include "sysemu/arch_init.h" |
| #include "sysemu/qtest.h" |
| #include "exec/address-spaces.h" |
| #include "elf.h" |
| |
| //#define HARD_DEBUG_PPC_IO |
| //#define DEBUG_PPC_IO |
| |
| /* SMP is not enabled, for now */ |
| #define MAX_CPUS 1 |
| |
| #define MAX_IDE_BUS 2 |
| |
| #define BIOS_SIZE (1024 * 1024) |
| #define BIOS_FILENAME "ppc_rom.bin" |
| #define KERNEL_LOAD_ADDR 0x01000000 |
| #define INITRD_LOAD_ADDR 0x01800000 |
| |
| #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO) |
| #define DEBUG_PPC_IO |
| #endif |
| |
| #if defined (HARD_DEBUG_PPC_IO) |
| #define PPC_IO_DPRINTF(fmt, ...) \ |
| do { \ |
| if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \ |
| qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \ |
| } else { \ |
| printf("%s : " fmt, __func__ , ## __VA_ARGS__); \ |
| } \ |
| } while (0) |
| #elif defined (DEBUG_PPC_IO) |
| #define PPC_IO_DPRINTF(fmt, ...) \ |
| qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__) |
| #else |
| #define PPC_IO_DPRINTF(fmt, ...) do { } while (0) |
| #endif |
| |
| /* Constants for devices init */ |
| static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
| static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
| static const int ide_irq[2] = { 13, 13 }; |
| |
| #define NE2000_NB_MAX 6 |
| |
| static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
| static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
| |
| /* ISA IO ports bridge */ |
| #define PPC_IO_BASE 0x80000000 |
| |
| /* PowerPC control and status registers */ |
| #if 0 // Not used |
| static struct { |
| /* IDs */ |
| uint32_t veni_devi; |
| uint32_t revi; |
| /* Control and status */ |
| uint32_t gcsr; |
| uint32_t xcfr; |
| uint32_t ct32; |
| uint32_t mcsr; |
| /* General purpose registers */ |
| uint32_t gprg[6]; |
| /* Exceptions */ |
| uint32_t feen; |
| uint32_t fest; |
| uint32_t fema; |
| uint32_t fecl; |
| uint32_t eeen; |
| uint32_t eest; |
| uint32_t eecl; |
| uint32_t eeint; |
| uint32_t eemck0; |
| uint32_t eemck1; |
| /* Error diagnostic */ |
| } XCSR; |
| |
| static void PPC_XCSR_writeb (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, |
| value); |
| } |
| |
| static void PPC_XCSR_writew (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, |
| value); |
| } |
| |
| static void PPC_XCSR_writel (void *opaque, |
| hwaddr addr, uint32_t value) |
| { |
| printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, |
| value); |
| } |
| |
| static uint32_t PPC_XCSR_readb (void *opaque, hwaddr addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, |
| retval); |
| |
| return retval; |
| } |
| |
| static uint32_t PPC_XCSR_readw (void *opaque, hwaddr addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, |
| retval); |
| |
| return retval; |
| } |
| |
| static uint32_t PPC_XCSR_readl (void *opaque, hwaddr addr) |
| { |
| uint32_t retval = 0; |
| |
| printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, |
| retval); |
| |
| return retval; |
| } |
| |
| static const MemoryRegionOps PPC_XCSR_ops = { |
| .old_mmio = { |
| .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, }, |
| .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, }, |
| }, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| #endif |
| |
| /* Fake super-io ports for PREP platform (Intel 82378ZB) */ |
| typedef struct sysctrl_t { |
| qemu_irq reset_irq; |
| M48t59State *nvram; |
| uint8_t state; |
| uint8_t syscontrol; |
| int contiguous_map; |
| qemu_irq contiguous_map_irq; |
| int endian; |
| } sysctrl_t; |
| |
| enum { |
| STATE_HARDFILE = 0x01, |
| }; |
| |
| static sysctrl_t *sysctrl; |
| |
| static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val) |
| { |
| sysctrl_t *sysctrl = opaque; |
| |
| PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", |
| addr - PPC_IO_BASE, val); |
| switch (addr) { |
| case 0x0092: |
| /* Special port 92 */ |
| /* Check soft reset asked */ |
| if (val & 0x01) { |
| qemu_irq_raise(sysctrl->reset_irq); |
| } else { |
| qemu_irq_lower(sysctrl->reset_irq); |
| } |
| /* Check LE mode */ |
| if (val & 0x02) { |
| sysctrl->endian = 1; |
| } else { |
| sysctrl->endian = 0; |
| } |
| break; |
| case 0x0800: |
| /* Motorola CPU configuration register : read-only */ |
| break; |
| case 0x0802: |
| /* Motorola base module feature register : read-only */ |
| break; |
| case 0x0803: |
| /* Motorola base module status register : read-only */ |
| break; |
| case 0x0808: |
| /* Hardfile light register */ |
| if (val & 1) |
| sysctrl->state |= STATE_HARDFILE; |
| else |
| sysctrl->state &= ~STATE_HARDFILE; |
| break; |
| case 0x0810: |
| /* Password protect 1 register */ |
| if (sysctrl->nvram != NULL) |
| m48t59_toggle_lock(sysctrl->nvram, 1); |
| break; |
| case 0x0812: |
| /* Password protect 2 register */ |
| if (sysctrl->nvram != NULL) |
| m48t59_toggle_lock(sysctrl->nvram, 2); |
| break; |
| case 0x0814: |
| /* L2 invalidate register */ |
| // tlb_flush(first_cpu, 1); |
| break; |
| case 0x081C: |
| /* system control register */ |
| sysctrl->syscontrol = val & 0x0F; |
| break; |
| case 0x0850: |
| /* I/O map type register */ |
| sysctrl->contiguous_map = val & 0x01; |
| qemu_set_irq(sysctrl->contiguous_map_irq, sysctrl->contiguous_map); |
| break; |
| default: |
| printf("ERROR: unaffected IO port write: %04" PRIx32 |
| " => %02" PRIx32"\n", addr, val); |
| break; |
| } |
| } |
| |
| static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr) |
| { |
| sysctrl_t *sysctrl = opaque; |
| uint32_t retval = 0xFF; |
| |
| switch (addr) { |
| case 0x0092: |
| /* Special port 92 */ |
| retval = sysctrl->endian << 1; |
| break; |
| case 0x0800: |
| /* Motorola CPU configuration register */ |
| retval = 0xEF; /* MPC750 */ |
| break; |
| case 0x0802: |
| /* Motorola Base module feature register */ |
| retval = 0xAD; /* No ESCC, PMC slot neither ethernet */ |
| break; |
| case 0x0803: |
| /* Motorola base module status register */ |
| retval = 0xE0; /* Standard MPC750 */ |
| break; |
| case 0x080C: |
| /* Equipment present register: |
| * no L2 cache |
| * no upgrade processor |
| * no cards in PCI slots |
| * SCSI fuse is bad |
| */ |
| retval = 0x3C; |
| break; |
| case 0x0810: |
| /* Motorola base module extended feature register */ |
| retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */ |
| break; |
| case 0x0814: |
| /* L2 invalidate: don't care */ |
| break; |
| case 0x0818: |
| /* Keylock */ |
| retval = 0x00; |
| break; |
| case 0x081C: |
| /* system control register |
| * 7 - 6 / 1 - 0: L2 cache enable |
| */ |
| retval = sysctrl->syscontrol; |
| break; |
| case 0x0823: |
| /* */ |
| retval = 0x03; /* no L2 cache */ |
| break; |
| case 0x0850: |
| /* I/O map type register */ |
| retval = sysctrl->contiguous_map; |
| break; |
| default: |
| printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr); |
| break; |
| } |
| PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", |
| addr - PPC_IO_BASE, retval); |
| |
| return retval; |
| } |
| |
| |
| #define NVRAM_SIZE 0x2000 |
| |
| static void cpu_request_exit(void *opaque, int irq, int level) |
| { |
| CPUState *cpu = current_cpu; |
| |
| if (cpu && level) { |
| cpu_exit(cpu); |
| } |
| } |
| |
| static void ppc_prep_reset(void *opaque) |
| { |
| PowerPCCPU *cpu = opaque; |
| |
| cpu_reset(CPU(cpu)); |
| } |
| |
| static const MemoryRegionPortio prep_portio_list[] = { |
| /* System control ports */ |
| { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, }, |
| { 0x0800, 0x52, 1, |
| .read = PREP_io_800_readb, .write = PREP_io_800_writeb, }, |
| /* Special port to get debug messages from Open-Firmware */ |
| { 0x0F00, 4, 1, .write = PPC_debug_write, }, |
| PORTIO_END_OF_LIST(), |
| }; |
| |
| static PortioList prep_port_list; |
| |
| /* PowerPC PREP hardware initialisation */ |
| static void ppc_prep_init(MachineState *machine) |
| { |
| ram_addr_t ram_size = machine->ram_size; |
| const char *cpu_model = machine->cpu_model; |
| const char *kernel_filename = machine->kernel_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| const char *initrd_filename = machine->initrd_filename; |
| const char *boot_device = machine->boot_order; |
| MemoryRegion *sysmem = get_system_memory(); |
| PowerPCCPU *cpu = NULL; |
| CPUPPCState *env = NULL; |
| nvram_t nvram; |
| M48t59State *m48t59; |
| #if 0 |
| MemoryRegion *xcsr = g_new(MemoryRegion, 1); |
| #endif |
| int linux_boot, i, nb_nics1; |
| MemoryRegion *ram = g_new(MemoryRegion, 1); |
| uint32_t kernel_base, initrd_base; |
| long kernel_size, initrd_size; |
| DeviceState *dev; |
| PCIHostState *pcihost; |
| PCIBus *pci_bus; |
| PCIDevice *pci; |
| ISABus *isa_bus; |
| ISADevice *isa; |
| qemu_irq *cpu_exit_irq; |
| int ppc_boot_device; |
| DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
| |
| sysctrl = g_malloc0(sizeof(sysctrl_t)); |
| |
| linux_boot = (kernel_filename != NULL); |
| |
| /* init CPUs */ |
| if (cpu_model == NULL) |
| cpu_model = "602"; |
| for (i = 0; i < smp_cpus; i++) { |
| cpu = cpu_ppc_init(cpu_model); |
| if (cpu == NULL) { |
| fprintf(stderr, "Unable to find PowerPC CPU definition\n"); |
| exit(1); |
| } |
| env = &cpu->env; |
| |
| if (env->flags & POWERPC_FLAG_RTC_CLK) { |
| /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */ |
| cpu_ppc_tb_init(env, 7812500UL); |
| } else { |
| /* Set time-base frequency to 100 Mhz */ |
| cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL); |
| } |
| qemu_register_reset(ppc_prep_reset, cpu); |
| } |
| |
| /* allocate RAM */ |
| memory_region_allocate_system_memory(ram, NULL, "ppc_prep.ram", ram_size); |
| memory_region_add_subregion(sysmem, 0, ram); |
| |
| if (linux_boot) { |
| kernel_base = KERNEL_LOAD_ADDR; |
| /* now we can load the kernel */ |
| kernel_size = load_image_targphys(kernel_filename, kernel_base, |
| ram_size - kernel_base); |
| if (kernel_size < 0) { |
| hw_error("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_targphys(initrd_filename, initrd_base, |
| ram_size - initrd_base); |
| if (initrd_size < 0) { |
| hw_error("qemu: could not load initial ram disk '%s'\n", |
| initrd_filename); |
| } |
| } 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 now, OHW cannot boot from the network. */ |
| for (i = 0; boot_device[i] != '\0'; i++) { |
| if (boot_device[i] >= 'a' && boot_device[i] <= 'f') { |
| ppc_boot_device = boot_device[i]; |
| break; |
| } |
| } |
| if (ppc_boot_device == '\0') { |
| fprintf(stderr, "No valid boot device for Mac99 machine\n"); |
| exit(1); |
| } |
| } |
| |
| if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { |
| hw_error("Only 6xx bus is supported on PREP machine\n"); |
| } |
| |
| dev = qdev_create(NULL, "raven-pcihost"); |
| if (bios_name == NULL) { |
| bios_name = BIOS_FILENAME; |
| } |
| qdev_prop_set_string(dev, "bios-name", bios_name); |
| qdev_prop_set_uint32(dev, "elf-machine", ELF_MACHINE); |
| pcihost = PCI_HOST_BRIDGE(dev); |
| object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL); |
| qdev_init_nofail(dev); |
| pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); |
| if (pci_bus == NULL) { |
| fprintf(stderr, "Couldn't create PCI host controller.\n"); |
| exit(1); |
| } |
| sysctrl->contiguous_map_irq = qdev_get_gpio_in(dev, 0); |
| |
| /* PCI -> ISA bridge */ |
| pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378"); |
| cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); |
| cpu = POWERPC_CPU(first_cpu); |
| qdev_connect_gpio_out(&pci->qdev, 0, |
| cpu->env.irq_inputs[PPC6xx_INPUT_INT]); |
| qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq); |
| sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9)); |
| sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11)); |
| sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9)); |
| sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11)); |
| isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0")); |
| |
| /* Super I/O (parallel + serial ports) */ |
| isa = isa_create(isa_bus, TYPE_PC87312); |
| dev = DEVICE(isa); |
| qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */ |
| qdev_init_nofail(dev); |
| |
| /* init basic PC hardware */ |
| pci_vga_init(pci_bus); |
| |
| nb_nics1 = nb_nics; |
| if (nb_nics1 > NE2000_NB_MAX) |
| nb_nics1 = NE2000_NB_MAX; |
| for(i = 0; i < nb_nics1; i++) { |
| if (nd_table[i].model == NULL) { |
| nd_table[i].model = g_strdup("ne2k_isa"); |
| } |
| if (strcmp(nd_table[i].model, "ne2k_isa") == 0) { |
| isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i], |
| &nd_table[i]); |
| } else { |
| pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL); |
| } |
| } |
| |
| ide_drive_get(hd, ARRAY_SIZE(hd)); |
| for(i = 0; i < MAX_IDE_BUS; i++) { |
| isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i], |
| hd[2 * i], |
| hd[2 * i + 1]); |
| } |
| isa_create_simple(isa_bus, "i8042"); |
| |
| cpu = POWERPC_CPU(first_cpu); |
| sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET]; |
| |
| portio_list_init(&prep_port_list, NULL, prep_portio_list, sysctrl, "prep"); |
| portio_list_add(&prep_port_list, isa_address_space_io(isa), 0x0); |
| |
| /* PowerPC control and status register group */ |
| #if 0 |
| memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000); |
| memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr); |
| #endif |
| |
| if (usb_enabled(false)) { |
| pci_create_simple(pci_bus, -1, "pci-ohci"); |
| } |
| |
| m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59); |
| if (m48t59 == NULL) |
| return; |
| sysctrl->nvram = m48t59; |
| |
| /* Initialise NVRAM */ |
| nvram.opaque = m48t59; |
| nvram.read_fn = &m48t59_read; |
| nvram.write_fn = &m48t59_write; |
| PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", 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); |
| } |
| |
| static QEMUMachine prep_machine = { |
| .name = "prep", |
| .desc = "PowerPC PREP platform", |
| .init = ppc_prep_init, |
| .max_cpus = MAX_CPUS, |
| .default_boot_order = "cad", |
| }; |
| |
| static void prep_machine_init(void) |
| { |
| qemu_register_machine(&prep_machine); |
| } |
| |
| machine_init(prep_machine_init); |
