| /* |
| * QEMU PPC PREP hardware System Emulator |
| * |
| * Copyright (c) 2003-2007 Jocelyn Mayer |
| * Copyright (c) 2017 Hervé Poussineau |
| * |
| * 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 "qemu/osdep.h" |
| #include "hw/rtc/m48t59.h" |
| #include "hw/char/serial.h" |
| #include "hw/block/fdc.h" |
| #include "net/net.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 "qapi/error.h" |
| #include "qemu/error-report.h" |
| #include "qemu/log.h" |
| #include "hw/loader.h" |
| #include "hw/rtc/mc146818rtc.h" |
| #include "hw/isa/pc87312.h" |
| #include "hw/qdev-properties.h" |
| #include "sysemu/kvm.h" |
| #include "sysemu/reset.h" |
| #include "trace.h" |
| #include "elf.h" |
| #include "qemu/units.h" |
| #include "kvm_ppc.h" |
| |
| /* SMP is not enabled, for now */ |
| #define MAX_CPUS 1 |
| |
| #define MAX_IDE_BUS 2 |
| |
| #define CFG_ADDR 0xf0000510 |
| |
| #define KERNEL_LOAD_ADDR 0x01000000 |
| #define INITRD_LOAD_ADDR 0x01800000 |
| |
| #define NVRAM_SIZE 0x2000 |
| |
| static void fw_cfg_boot_set(void *opaque, const char *boot_device, |
| Error **errp) |
| { |
| fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); |
| } |
| |
| static void ppc_prep_reset(void *opaque) |
| { |
| PowerPCCPU *cpu = opaque; |
| |
| cpu_reset(CPU(cpu)); |
| } |
| |
| |
| /*****************************************************************************/ |
| /* NVRAM helpers */ |
| static inline uint32_t nvram_read(Nvram *nvram, uint32_t addr) |
| { |
| NvramClass *k = NVRAM_GET_CLASS(nvram); |
| return (k->read)(nvram, addr); |
| } |
| |
| static inline void nvram_write(Nvram *nvram, uint32_t addr, uint32_t val) |
| { |
| NvramClass *k = NVRAM_GET_CLASS(nvram); |
| (k->write)(nvram, addr, val); |
| } |
| |
| static void NVRAM_set_byte(Nvram *nvram, uint32_t addr, uint8_t value) |
| { |
| nvram_write(nvram, addr, value); |
| } |
| |
| static uint8_t NVRAM_get_byte(Nvram *nvram, uint32_t addr) |
| { |
| return nvram_read(nvram, addr); |
| } |
| |
| static void NVRAM_set_word(Nvram *nvram, uint32_t addr, uint16_t value) |
| { |
| nvram_write(nvram, addr, value >> 8); |
| nvram_write(nvram, addr + 1, value & 0xFF); |
| } |
| |
| static uint16_t NVRAM_get_word(Nvram *nvram, uint32_t addr) |
| { |
| uint16_t tmp; |
| |
| tmp = nvram_read(nvram, addr) << 8; |
| tmp |= nvram_read(nvram, addr + 1); |
| |
| return tmp; |
| } |
| |
| static void NVRAM_set_lword(Nvram *nvram, uint32_t addr, uint32_t value) |
| { |
| nvram_write(nvram, addr, value >> 24); |
| nvram_write(nvram, addr + 1, (value >> 16) & 0xFF); |
| nvram_write(nvram, addr + 2, (value >> 8) & 0xFF); |
| nvram_write(nvram, addr + 3, value & 0xFF); |
| } |
| |
| static void NVRAM_set_string(Nvram *nvram, uint32_t addr, const char *str, |
| uint32_t max) |
| { |
| int i; |
| |
| for (i = 0; i < max && str[i] != '\0'; i++) { |
| nvram_write(nvram, addr + i, str[i]); |
| } |
| nvram_write(nvram, addr + i, str[i]); |
| nvram_write(nvram, addr + max - 1, '\0'); |
| } |
| |
| static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value) |
| { |
| uint16_t tmp; |
| uint16_t pd, pd1, pd2; |
| |
| tmp = prev >> 8; |
| pd = prev ^ value; |
| pd1 = pd & 0x000F; |
| pd2 = ((pd >> 4) & 0x000F) ^ pd1; |
| tmp ^= (pd1 << 3) | (pd1 << 8); |
| tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); |
| |
| return tmp; |
| } |
| |
| static uint16_t NVRAM_compute_crc (Nvram *nvram, uint32_t start, uint32_t count) |
| { |
| uint32_t i; |
| uint16_t crc = 0xFFFF; |
| int odd; |
| |
| odd = count & 1; |
| count &= ~1; |
| for (i = 0; i != count; i++) { |
| crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); |
| } |
| if (odd) { |
| crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8); |
| } |
| |
| return crc; |
| } |
| |
| #define CMDLINE_ADDR 0x017ff000 |
| |
| static int PPC_NVRAM_set_params (Nvram *nvram, uint16_t NVRAM_size, |
| const char *arch, |
| uint32_t RAM_size, int boot_device, |
| uint32_t kernel_image, uint32_t kernel_size, |
| const char *cmdline, |
| uint32_t initrd_image, uint32_t initrd_size, |
| uint32_t NVRAM_image, |
| int width, int height, int depth) |
| { |
| uint16_t crc; |
| |
| /* Set parameters for Open Hack'Ware BIOS */ |
| NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16); |
| NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */ |
| NVRAM_set_word(nvram, 0x14, NVRAM_size); |
| NVRAM_set_string(nvram, 0x20, arch, 16); |
| NVRAM_set_lword(nvram, 0x30, RAM_size); |
| NVRAM_set_byte(nvram, 0x34, boot_device); |
| NVRAM_set_lword(nvram, 0x38, kernel_image); |
| NVRAM_set_lword(nvram, 0x3C, kernel_size); |
| if (cmdline) { |
| /* XXX: put the cmdline in NVRAM too ? */ |
| pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, |
| cmdline); |
| NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR); |
| NVRAM_set_lword(nvram, 0x44, strlen(cmdline)); |
| } else { |
| NVRAM_set_lword(nvram, 0x40, 0); |
| NVRAM_set_lword(nvram, 0x44, 0); |
| } |
| NVRAM_set_lword(nvram, 0x48, initrd_image); |
| NVRAM_set_lword(nvram, 0x4C, initrd_size); |
| NVRAM_set_lword(nvram, 0x50, NVRAM_image); |
| |
| NVRAM_set_word(nvram, 0x54, width); |
| NVRAM_set_word(nvram, 0x56, height); |
| NVRAM_set_word(nvram, 0x58, depth); |
| crc = NVRAM_compute_crc(nvram, 0x00, 0xF8); |
| NVRAM_set_word(nvram, 0xFC, crc); |
| |
| return 0; |
| } |
| |
| static int prep_set_cmos_checksum(DeviceState *dev, void *opaque) |
| { |
| uint16_t checksum = *(uint16_t *)opaque; |
| ISADevice *rtc; |
| |
| if (object_dynamic_cast(OBJECT(dev), TYPE_MC146818_RTC)) { |
| rtc = ISA_DEVICE(dev); |
| rtc_set_memory(rtc, 0x2e, checksum & 0xff); |
| rtc_set_memory(rtc, 0x3e, checksum & 0xff); |
| rtc_set_memory(rtc, 0x2f, checksum >> 8); |
| rtc_set_memory(rtc, 0x3f, checksum >> 8); |
| |
| object_property_add_alias(qdev_get_machine(), "rtc-time", OBJECT(rtc), |
| "date"); |
| } |
| return 0; |
| } |
| |
| static void ibm_40p_init(MachineState *machine) |
| { |
| const char *bios_name = machine->firmware ?: "openbios-ppc"; |
| CPUPPCState *env = NULL; |
| uint16_t cmos_checksum; |
| PowerPCCPU *cpu; |
| DeviceState *dev, *i82378_dev; |
| SysBusDevice *pcihost, *s; |
| Nvram *m48t59 = NULL; |
| PCIBus *pci_bus; |
| ISADevice *isa_dev; |
| ISABus *isa_bus; |
| void *fw_cfg; |
| int i; |
| uint32_t kernel_base = 0, initrd_base = 0; |
| long kernel_size = 0, initrd_size = 0; |
| char boot_device; |
| |
| /* init CPU */ |
| cpu = POWERPC_CPU(cpu_create(machine->cpu_type)); |
| env = &cpu->env; |
| if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { |
| error_report("only 6xx bus is supported on this machine"); |
| exit(1); |
| } |
| |
| 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); |
| |
| /* PCI host */ |
| dev = qdev_new("raven-pcihost"); |
| qdev_prop_set_string(dev, "bios-name", bios_name); |
| qdev_prop_set_uint32(dev, "elf-machine", PPC_ELF_MACHINE); |
| pcihost = SYS_BUS_DEVICE(dev); |
| object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev)); |
| sysbus_realize_and_unref(pcihost, &error_fatal); |
| pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0")); |
| if (!pci_bus) { |
| error_report("could not create PCI host controller"); |
| exit(1); |
| } |
| |
| /* PCI -> ISA bridge */ |
| i82378_dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(11, 0), "i82378")); |
| qdev_connect_gpio_out(i82378_dev, 0, |
| cpu->env.irq_inputs[PPC6xx_INPUT_INT]); |
| sysbus_connect_irq(pcihost, 0, qdev_get_gpio_in(i82378_dev, 15)); |
| isa_bus = ISA_BUS(qdev_get_child_bus(i82378_dev, "isa.0")); |
| |
| /* Memory controller */ |
| isa_dev = isa_new("rs6000-mc"); |
| dev = DEVICE(isa_dev); |
| qdev_prop_set_uint32(dev, "ram-size", machine->ram_size); |
| isa_realize_and_unref(isa_dev, isa_bus, &error_fatal); |
| |
| /* RTC */ |
| isa_dev = isa_new(TYPE_MC146818_RTC); |
| dev = DEVICE(isa_dev); |
| qdev_prop_set_int32(dev, "base_year", 1900); |
| isa_realize_and_unref(isa_dev, isa_bus, &error_fatal); |
| |
| /* initialize CMOS checksums */ |
| cmos_checksum = 0x6aa9; |
| qbus_walk_children(BUS(isa_bus), prep_set_cmos_checksum, NULL, NULL, NULL, |
| &cmos_checksum); |
| |
| /* add some more devices */ |
| if (defaults_enabled()) { |
| m48t59 = NVRAM(isa_create_simple(isa_bus, "isa-m48t59")); |
| |
| isa_dev = isa_new("cs4231a"); |
| dev = DEVICE(isa_dev); |
| qdev_prop_set_uint32(dev, "iobase", 0x830); |
| qdev_prop_set_uint32(dev, "irq", 10); |
| isa_realize_and_unref(isa_dev, isa_bus, &error_fatal); |
| |
| isa_dev = isa_new("pc87312"); |
| dev = DEVICE(isa_dev); |
| qdev_prop_set_uint32(dev, "config", 12); |
| isa_realize_and_unref(isa_dev, isa_bus, &error_fatal); |
| |
| isa_dev = isa_new("prep-systemio"); |
| dev = DEVICE(isa_dev); |
| qdev_prop_set_uint32(dev, "ibm-planar-id", 0xfc); |
| qdev_prop_set_uint32(dev, "equipment", 0xc0); |
| isa_realize_and_unref(isa_dev, isa_bus, &error_fatal); |
| |
| dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(1, 0), |
| "lsi53c810")); |
| lsi53c8xx_handle_legacy_cmdline(dev); |
| qdev_connect_gpio_out(dev, 0, qdev_get_gpio_in(i82378_dev, 13)); |
| |
| /* XXX: s3-trio at PCI_DEVFN(2, 0) */ |
| pci_vga_init(pci_bus); |
| |
| for (i = 0; i < nb_nics; i++) { |
| pci_nic_init_nofail(&nd_table[i], pci_bus, "pcnet", |
| i == 0 ? "3" : NULL); |
| } |
| } |
| |
| /* Prepare firmware configuration for OpenBIOS */ |
| dev = qdev_new(TYPE_FW_CFG_MEM); |
| fw_cfg = FW_CFG(dev); |
| qdev_prop_set_uint32(dev, "data_width", 1); |
| qdev_prop_set_bit(dev, "dma_enabled", false); |
| object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG, |
| OBJECT(fw_cfg)); |
| s = SYS_BUS_DEVICE(dev); |
| sysbus_realize_and_unref(s, &error_fatal); |
| sysbus_mmio_map(s, 0, CFG_ADDR); |
| sysbus_mmio_map(s, 1, CFG_ADDR + 2); |
| |
| if (machine->kernel_filename) { |
| /* load kernel */ |
| kernel_base = KERNEL_LOAD_ADDR; |
| kernel_size = load_image_targphys(machine->kernel_filename, |
| kernel_base, |
| machine->ram_size - kernel_base); |
| if (kernel_size < 0) { |
| error_report("could not load kernel '%s'", |
| machine->kernel_filename); |
| exit(1); |
| } |
| fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size); |
| /* load initrd */ |
| if (machine->initrd_filename) { |
| initrd_base = INITRD_LOAD_ADDR; |
| initrd_size = load_image_targphys(machine->initrd_filename, |
| initrd_base, |
| machine->ram_size - initrd_base); |
| if (initrd_size < 0) { |
| error_report("could not load initial ram disk '%s'", |
| machine->initrd_filename); |
| exit(1); |
| } |
| fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size); |
| } |
| if (machine->kernel_cmdline && *machine->kernel_cmdline) { |
| fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR); |
| pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE, |
| machine->kernel_cmdline); |
| fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, |
| machine->kernel_cmdline); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, |
| strlen(machine->kernel_cmdline) + 1); |
| } |
| boot_device = 'm'; |
| } else { |
| boot_device = machine->boot_order[0]; |
| } |
| |
| fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)machine->smp.max_cpus); |
| fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size); |
| fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_PREP); |
| |
| fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width); |
| fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height); |
| fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth); |
| |
| fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled()); |
| if (kvm_enabled()) { |
| uint8_t *hypercall; |
| |
| fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq()); |
| hypercall = g_malloc(16); |
| kvmppc_get_hypercall(env, hypercall, 16); |
| fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid()); |
| } else { |
| fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, NANOSECONDS_PER_SECOND); |
| } |
| fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device); |
| qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); |
| |
| /* Prepare firmware configuration for Open Hack'Ware */ |
| if (m48t59) { |
| PPC_NVRAM_set_params(m48t59, NVRAM_SIZE, "PREP", machine->ram_size, |
| boot_device, |
| kernel_base, kernel_size, |
| machine->kernel_cmdline, |
| initrd_base, initrd_size, |
| /* XXX: need an option to load a NVRAM image */ |
| 0, |
| graphic_width, graphic_height, graphic_depth); |
| } |
| } |
| |
| static void ibm_40p_machine_init(MachineClass *mc) |
| { |
| mc->desc = "IBM RS/6000 7020 (40p)", |
| mc->init = ibm_40p_init; |
| mc->max_cpus = 1; |
| mc->default_ram_size = 128 * MiB; |
| mc->block_default_type = IF_SCSI; |
| mc->default_boot_order = "c"; |
| mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("604"); |
| mc->default_display = "std"; |
| } |
| |
| DEFINE_MACHINE("40p", ibm_40p_machine_init) |
