hw/ppc/pegasos2.c

   1 /*
   2  * QEMU PowerPC CHRP (Genesi/bPlan Pegasos II) hardware System Emulator
   3  *
   4  * Copyright (c) 2018-2020 BALATON Zoltan
   5  *
   6  * This work is licensed under the GNU GPL license version 2 or later.
   7  *
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "qemu-common.h"
  12 #include "qemu/units.h"
  13 #include "qapi/error.h"
  14 #include "hw/hw.h"
  15 #include "hw/ppc/ppc.h"
  16 #include "hw/sysbus.h"
  17 #include "hw/pci/pci_host.h"
  18 #include "hw/irq.h"
  19 #include "hw/pci-host/mv64361.h"
  20 #include "hw/isa/vt82c686.h"
  21 #include "hw/ide/pci.h"
  22 #include "hw/i2c/smbus_eeprom.h"
  23 #include "hw/qdev-properties.h"
  24 #include "sysemu/reset.h"
  25 #include "hw/boards.h"
  26 #include "hw/loader.h"
  27 #include "hw/fw-path-provider.h"
  28 #include "elf.h"
  29 #include "qemu/log.h"
  30 #include "qemu/error-report.h"
  31 #include "sysemu/kvm.h"
  32 #include "kvm_ppc.h"
  33 #include "exec/address-spaces.h"
  34 #include "trace.h"
  35 #include "qemu/datadir.h"
  36 #include "sysemu/device_tree.h"
  37
  38 #define PROM_FILENAME "pegasos2.rom"
  39 #define PROM_ADDR     0xfff00000
  40 #define PROM_SIZE     0x80000
  41
  42 #define BUS_FREQ_HZ 133333333
  43
  44 static void pegasos2_cpu_reset(void *opaque)
  45 {
  46     PowerPCCPU *cpu = opaque;
  47
  48     cpu_reset(CPU(cpu));
  49     cpu->env.spr[SPR_HID1] = 7ULL << 28;
  50 }
  51
  52 static void pegasos2_init(MachineState *machine)
  53 {
  54     PowerPCCPU *cpu = NULL;
  55     MemoryRegion *rom = g_new(MemoryRegion, 1);
  56     DeviceState *mv;
  57     PCIBus *pci_bus;
  58     PCIDevice *dev;
  59     I2CBus *i2c_bus;
  60     const char *fwname = machine->firmware ?: PROM_FILENAME;
  61     char *filename;
  62     int sz;
  63     uint8_t *spd_data;
  64
  65     /* init CPU */
  66     cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
  67     if (PPC_INPUT(&cpu->env) != PPC_FLAGS_INPUT_6xx) {
  68         error_report("Incompatible CPU, only 6xx bus supported");
  69         exit(1);
  70     }
  71
  72     /* Set time-base frequency */
  73     cpu_ppc_tb_init(&cpu->env, BUS_FREQ_HZ / 4);
  74     qemu_register_reset(pegasos2_cpu_reset, cpu);
  75
  76     /* RAM */
  77     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
  78
  79     /* allocate and load firmware */
  80     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, fwname);
  81     if (!filename) {
  82         error_report("Could not find firmware '%s'", fwname);
  83         exit(1);
  84     }
  85     memory_region_init_rom(rom, NULL, "pegasos2.rom", PROM_SIZE, &error_fatal);
  86     memory_region_add_subregion(get_system_memory(), PROM_ADDR, rom);
  87     sz = load_elf(filename, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 1,
  88                   PPC_ELF_MACHINE, 0, 0);
  89     if (sz <= 0) {
  90         sz = load_image_targphys(filename, PROM_ADDR, PROM_SIZE);
  91     }
  92     if (sz <= 0 || sz > PROM_SIZE) {
  93         error_report("Could not load firmware '%s'", filename);
  94         exit(1);
  95     }
  96     g_free(filename);
  97
  98     /* Marvell Discovery II system controller */
  99     mv = DEVICE(sysbus_create_simple(TYPE_MV64361, -1,
 100                         ((qemu_irq *)cpu->env.irq_inputs)[PPC6xx_INPUT_INT]));
 101     pci_bus = mv64361_get_pci_bus(mv, 1);
 102
 103     /* VIA VT8231 South Bridge (multifunction PCI device) */
 104     /* VT8231 function 0: PCI-to-ISA Bridge */
 105     dev = pci_create_simple_multifunction(pci_bus, PCI_DEVFN(12, 0), true,
 106                                           TYPE_VT8231_ISA);
 107     qdev_connect_gpio_out(DEVICE(dev), 0,
 108                           qdev_get_gpio_in_named(mv, "gpp", 31));
 109
 110     /* VT8231 function 1: IDE Controller */
 111     dev = pci_create_simple(pci_bus, PCI_DEVFN(12, 1), "via-ide");
 112     pci_ide_create_devs(dev);
 113
 114     /* VT8231 function 2-3: USB Ports */
 115     pci_create_simple(pci_bus, PCI_DEVFN(12, 2), "vt82c686b-usb-uhci");
 116     pci_create_simple(pci_bus, PCI_DEVFN(12, 3), "vt82c686b-usb-uhci");
 117
 118     /* VT8231 function 4: Power Management Controller */
 119     dev = pci_create_simple(pci_bus, PCI_DEVFN(12, 4), TYPE_VT8231_PM);
 120     i2c_bus = I2C_BUS(qdev_get_child_bus(DEVICE(dev), "i2c"));
 121     spd_data = spd_data_generate(DDR, machine->ram_size);
 122     smbus_eeprom_init_one(i2c_bus, 0x57, spd_data);
 123
 124     /* VT8231 function 5-6: AC97 Audio & Modem */
 125     pci_create_simple(pci_bus, PCI_DEVFN(12, 5), TYPE_VIA_AC97);
 126     pci_create_simple(pci_bus, PCI_DEVFN(12, 6), TYPE_VIA_MC97);
 127
 128     /* other PC hardware */
 129     pci_vga_init(pci_bus);
 130 }
 131
 132 static void pegasos2_machine(MachineClass *mc)
 133 {
 134     mc->desc = "Genesi/bPlan Pegasos II";
 135     mc->init = pegasos2_init;
 136     mc->block_default_type = IF_IDE;
 137     mc->default_boot_order = "cd";
 138     mc->default_display = "std";
 139     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("7400_v2.9");
 140     mc->default_ram_id = "pegasos2.ram";
 141     mc->default_ram_size = 512 * MiB;
 142 }
 143
 144 DEFINE_MACHINE("pegasos2", pegasos2_machine)