| /* |
| * QEMU HPPA hardware system emulator. |
| * Copyright 2018 Helge Deller <deller@gmx.de> |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu-common.h" |
| #include "cpu.h" |
| #include "elf.h" |
| #include "hw/loader.h" |
| #include "hw/boards.h" |
| #include "qemu/error-report.h" |
| #include "sysemu/reset.h" |
| #include "sysemu/sysemu.h" |
| #include "hw/rtc/mc146818rtc.h" |
| #include "hw/ide.h" |
| #include "hw/timer/i8254.h" |
| #include "hw/char/serial.h" |
| #include "hppa_sys.h" |
| #include "qemu/units.h" |
| #include "qapi/error.h" |
| #include "net/net.h" |
| #include "qemu/log.h" |
| |
| #define MAX_IDE_BUS 2 |
| |
| static ISABus *hppa_isa_bus(void) |
| { |
| ISABus *isa_bus; |
| qemu_irq *isa_irqs; |
| MemoryRegion *isa_region; |
| |
| isa_region = g_new(MemoryRegion, 1); |
| memory_region_init_io(isa_region, NULL, &hppa_pci_ignore_ops, |
| NULL, "isa-io", 0x800); |
| memory_region_add_subregion(get_system_memory(), IDE_HPA, |
| isa_region); |
| |
| isa_bus = isa_bus_new(NULL, get_system_memory(), isa_region, |
| &error_abort); |
| isa_irqs = i8259_init(isa_bus, |
| /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */ |
| NULL); |
| isa_bus_irqs(isa_bus, isa_irqs); |
| |
| return isa_bus; |
| } |
| |
| static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr) |
| { |
| addr &= (0x10000000 - 1); |
| return addr; |
| } |
| |
| static HPPACPU *cpu[HPPA_MAX_CPUS]; |
| static uint64_t firmware_entry; |
| |
| static void machine_hppa_init(MachineState *machine) |
| { |
| const char *kernel_filename = machine->kernel_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| const char *initrd_filename = machine->initrd_filename; |
| DeviceState *dev; |
| PCIBus *pci_bus; |
| ISABus *isa_bus; |
| qemu_irq rtc_irq, serial_irq; |
| char *firmware_filename; |
| uint64_t firmware_low, firmware_high; |
| long size; |
| uint64_t kernel_entry = 0, kernel_low, kernel_high; |
| MemoryRegion *addr_space = get_system_memory(); |
| MemoryRegion *rom_region; |
| MemoryRegion *ram_region; |
| MemoryRegion *cpu_region; |
| long i; |
| unsigned int smp_cpus = machine->smp.cpus; |
| |
| ram_size = machine->ram_size; |
| |
| /* Create CPUs. */ |
| for (i = 0; i < smp_cpus; i++) { |
| char *name = g_strdup_printf("cpu%ld-io-eir", i); |
| cpu[i] = HPPA_CPU(cpu_create(machine->cpu_type)); |
| |
| cpu_region = g_new(MemoryRegion, 1); |
| memory_region_init_io(cpu_region, OBJECT(cpu[i]), &hppa_io_eir_ops, |
| cpu[i], name, 4); |
| memory_region_add_subregion(addr_space, CPU_HPA + i * 0x1000, |
| cpu_region); |
| g_free(name); |
| } |
| |
| /* Limit main memory. */ |
| if (ram_size > FIRMWARE_START) { |
| machine->ram_size = ram_size = FIRMWARE_START; |
| } |
| |
| /* Main memory region. */ |
| ram_region = g_new(MemoryRegion, 1); |
| memory_region_allocate_system_memory(ram_region, OBJECT(machine), |
| "ram", ram_size); |
| memory_region_add_subregion(addr_space, 0, ram_region); |
| |
| /* Init Dino (PCI host bus chip). */ |
| pci_bus = dino_init(addr_space, &rtc_irq, &serial_irq); |
| assert(pci_bus); |
| |
| /* Create ISA bus. */ |
| isa_bus = hppa_isa_bus(); |
| assert(isa_bus); |
| |
| /* Realtime clock, used by firmware for PDC_TOD call. */ |
| mc146818_rtc_init(isa_bus, 2000, rtc_irq); |
| |
| /* Serial code setup. */ |
| if (serial_hd(0)) { |
| uint32_t addr = DINO_UART_HPA + 0x800; |
| serial_mm_init(addr_space, addr, 0, serial_irq, |
| 115200, serial_hd(0), DEVICE_BIG_ENDIAN); |
| } |
| |
| /* SCSI disk setup. */ |
| dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a")); |
| lsi53c8xx_handle_legacy_cmdline(dev); |
| |
| /* Network setup. e1000 is good enough, failing Tulip support. */ |
| for (i = 0; i < nb_nics; i++) { |
| pci_nic_init_nofail(&nd_table[i], pci_bus, "e1000", NULL); |
| } |
| |
| /* Load firmware. Given that this is not "real" firmware, |
| but one explicitly written for the emulation, we might as |
| well load it directly from an ELF image. */ |
| firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, |
| bios_name ? bios_name : |
| "hppa-firmware.img"); |
| if (firmware_filename == NULL) { |
| error_report("no firmware provided"); |
| exit(1); |
| } |
| |
| size = load_elf(firmware_filename, NULL, NULL, NULL, |
| &firmware_entry, &firmware_low, &firmware_high, |
| true, EM_PARISC, 0, 0); |
| |
| /* Unfortunately, load_elf sign-extends reading elf32. */ |
| firmware_entry = (target_ureg)firmware_entry; |
| firmware_low = (target_ureg)firmware_low; |
| firmware_high = (target_ureg)firmware_high; |
| |
| if (size < 0) { |
| error_report("could not load firmware '%s'", firmware_filename); |
| exit(1); |
| } |
| qemu_log_mask(CPU_LOG_PAGE, "Firmware loaded at 0x%08" PRIx64 |
| "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 ".\n", |
| firmware_low, firmware_high, firmware_entry); |
| if (firmware_low < ram_size || firmware_high >= FIRMWARE_END) { |
| error_report("Firmware overlaps with memory or IO space"); |
| exit(1); |
| } |
| g_free(firmware_filename); |
| |
| rom_region = g_new(MemoryRegion, 1); |
| memory_region_init_ram(rom_region, NULL, "firmware", |
| (FIRMWARE_END - FIRMWARE_START), &error_fatal); |
| memory_region_add_subregion(addr_space, FIRMWARE_START, rom_region); |
| |
| /* Load kernel */ |
| if (kernel_filename) { |
| size = load_elf(kernel_filename, NULL, &cpu_hppa_to_phys, |
| NULL, &kernel_entry, &kernel_low, &kernel_high, |
| true, EM_PARISC, 0, 0); |
| |
| /* Unfortunately, load_elf sign-extends reading elf32. */ |
| kernel_entry = (target_ureg) cpu_hppa_to_phys(NULL, kernel_entry); |
| kernel_low = (target_ureg)kernel_low; |
| kernel_high = (target_ureg)kernel_high; |
| |
| if (size < 0) { |
| error_report("could not load kernel '%s'", kernel_filename); |
| exit(1); |
| } |
| qemu_log_mask(CPU_LOG_PAGE, "Kernel loaded at 0x%08" PRIx64 |
| "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 |
| ", size %" PRIu64 " kB\n", |
| kernel_low, kernel_high, kernel_entry, size / KiB); |
| |
| if (kernel_cmdline) { |
| cpu[0]->env.gr[24] = 0x4000; |
| pstrcpy_targphys("cmdline", cpu[0]->env.gr[24], |
| TARGET_PAGE_SIZE, kernel_cmdline); |
| } |
| |
| if (initrd_filename) { |
| ram_addr_t initrd_base; |
| int64_t initrd_size; |
| |
| initrd_size = get_image_size(initrd_filename); |
| if (initrd_size < 0) { |
| error_report("could not load initial ram disk '%s'", |
| initrd_filename); |
| exit(1); |
| } |
| |
| /* Load the initrd image high in memory. |
| Mirror the algorithm used by palo: |
| (1) Due to sign-extension problems and PDC, |
| put the initrd no higher than 1G. |
| (2) Reserve 64k for stack. */ |
| initrd_base = MIN(ram_size, 1 * GiB); |
| initrd_base = initrd_base - 64 * KiB; |
| initrd_base = (initrd_base - initrd_size) & TARGET_PAGE_MASK; |
| |
| if (initrd_base < kernel_high) { |
| error_report("kernel and initial ram disk too large!"); |
| exit(1); |
| } |
| |
| load_image_targphys(initrd_filename, initrd_base, initrd_size); |
| cpu[0]->env.gr[23] = initrd_base; |
| cpu[0]->env.gr[22] = initrd_base + initrd_size; |
| } |
| } |
| |
| if (!kernel_entry) { |
| /* When booting via firmware, tell firmware if we want interactive |
| * mode (kernel_entry=1), and to boot from CD (gr[24]='d') |
| * or hard disc * (gr[24]='c'). |
| */ |
| kernel_entry = boot_menu ? 1 : 0; |
| cpu[0]->env.gr[24] = machine->boot_order[0]; |
| } |
| |
| /* We jump to the firmware entry routine and pass the |
| * various parameters in registers. After firmware initialization, |
| * firmware will start the Linux kernel with ramdisk and cmdline. |
| */ |
| cpu[0]->env.gr[26] = ram_size; |
| cpu[0]->env.gr[25] = kernel_entry; |
| |
| /* tell firmware how many SMP CPUs to present in inventory table */ |
| cpu[0]->env.gr[21] = smp_cpus; |
| } |
| |
| static void hppa_machine_reset(MachineState *ms) |
| { |
| unsigned int smp_cpus = ms->smp.cpus; |
| int i; |
| |
| qemu_devices_reset(); |
| |
| /* Start all CPUs at the firmware entry point. |
| * Monarch CPU will initialize firmware, secondary CPUs |
| * will enter a small idle look and wait for rendevouz. */ |
| for (i = 0; i < smp_cpus; i++) { |
| cpu_set_pc(CPU(cpu[i]), firmware_entry); |
| cpu[i]->env.gr[5] = CPU_HPA + i * 0x1000; |
| } |
| |
| /* already initialized by machine_hppa_init()? */ |
| if (cpu[0]->env.gr[26] == ram_size) { |
| return; |
| } |
| |
| cpu[0]->env.gr[26] = ram_size; |
| cpu[0]->env.gr[25] = 0; /* no firmware boot menu */ |
| cpu[0]->env.gr[24] = 'c'; |
| /* gr22/gr23 unused, no initrd while reboot. */ |
| cpu[0]->env.gr[21] = smp_cpus; |
| } |
| |
| |
| static void machine_hppa_machine_init(MachineClass *mc) |
| { |
| mc->desc = "HPPA generic machine"; |
| mc->default_cpu_type = TYPE_HPPA_CPU; |
| mc->init = machine_hppa_init; |
| mc->reset = hppa_machine_reset; |
| mc->block_default_type = IF_SCSI; |
| mc->max_cpus = HPPA_MAX_CPUS; |
| mc->default_cpus = 1; |
| mc->is_default = 1; |
| mc->default_ram_size = 512 * MiB; |
| mc->default_boot_order = "cd"; |
| } |
| |
| DEFINE_MACHINE("hppa", machine_hppa_machine_init) |
