1 /* 2 * QEMU HPPA hardware system emulator. 3 * Copyright 2018 Helge Deller <deller@gmx.de> 4 */ 5 6 #include "qemu/osdep.h" 7 #include "qemu-common.h" 8 #include "cpu.h" 9 #include "elf.h" 10 #include "hw/loader.h" 11 #include "hw/boards.h" 12 #include "qemu/error-report.h" 13 #include "sysemu/reset.h" 14 #include "sysemu/sysemu.h" 15 #include "hw/rtc/mc146818rtc.h" 16 #include "hw/timer/i8254.h" 17 #include "hw/char/serial.h" 18 #include "hw/net/lasi_82596.h" 19 #include "hppa_sys.h" 20 #include "qemu/units.h" 21 #include "qapi/error.h" 22 #include "net/net.h" 23 #include "qemu/log.h" 24 #include "net/net.h" 25 26 #define MAX_IDE_BUS 2 27 28 static ISABus *hppa_isa_bus(void) 29 { 30 ISABus *isa_bus; 31 qemu_irq *isa_irqs; 32 MemoryRegion *isa_region; 33 34 isa_region = g_new(MemoryRegion, 1); 35 memory_region_init_io(isa_region, NULL, &hppa_pci_ignore_ops, 36 NULL, "isa-io", 0x800); 37 memory_region_add_subregion(get_system_memory(), IDE_HPA, 38 isa_region); 39 40 isa_bus = isa_bus_new(NULL, get_system_memory(), isa_region, 41 &error_abort); 42 isa_irqs = i8259_init(isa_bus, 43 /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */ 44 NULL); 45 isa_bus_irqs(isa_bus, isa_irqs); 46 47 return isa_bus; 48 } 49 50 static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr) 51 { 52 addr &= (0x10000000 - 1); 53 return addr; 54 } 55 56 static HPPACPU *cpu[HPPA_MAX_CPUS]; 57 static uint64_t firmware_entry; 58 59 static void machine_hppa_init(MachineState *machine) 60 { 61 const char *kernel_filename = machine->kernel_filename; 62 const char *kernel_cmdline = machine->kernel_cmdline; 63 const char *initrd_filename = machine->initrd_filename; 64 DeviceState *dev; 65 PCIBus *pci_bus; 66 ISABus *isa_bus; 67 qemu_irq rtc_irq, serial_irq; 68 char *firmware_filename; 69 uint64_t firmware_low, firmware_high; 70 long size; 71 uint64_t kernel_entry = 0, kernel_low, kernel_high; 72 MemoryRegion *addr_space = get_system_memory(); 73 MemoryRegion *rom_region; 74 MemoryRegion *cpu_region; 75 long i; 76 unsigned int smp_cpus = machine->smp.cpus; 77 SysBusDevice *s; 78 79 /* Create CPUs. */ 80 for (i = 0; i < smp_cpus; i++) { 81 char *name = g_strdup_printf("cpu%ld-io-eir", i); 82 cpu[i] = HPPA_CPU(cpu_create(machine->cpu_type)); 83 84 cpu_region = g_new(MemoryRegion, 1); 85 memory_region_init_io(cpu_region, OBJECT(cpu[i]), &hppa_io_eir_ops, 86 cpu[i], name, 4); 87 memory_region_add_subregion(addr_space, CPU_HPA + i * 0x1000, 88 cpu_region); 89 g_free(name); 90 } 91 92 /* Main memory region. */ 93 if (machine->ram_size > 3 * GiB) { 94 error_report("RAM size is currently restricted to 3GB"); 95 exit(EXIT_FAILURE); 96 } 97 memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1); 98 99 100 /* Init Lasi chip */ 101 lasi_init(addr_space); 102 103 /* Init Dino (PCI host bus chip). */ 104 pci_bus = dino_init(addr_space, &rtc_irq, &serial_irq); 105 assert(pci_bus); 106 107 /* Create ISA bus. */ 108 isa_bus = hppa_isa_bus(); 109 assert(isa_bus); 110 111 /* Realtime clock, used by firmware for PDC_TOD call. */ 112 mc146818_rtc_init(isa_bus, 2000, rtc_irq); 113 114 /* Serial code setup. */ 115 if (serial_hd(0)) { 116 uint32_t addr = DINO_UART_HPA + 0x800; 117 serial_mm_init(addr_space, addr, 0, serial_irq, 118 115200, serial_hd(0), DEVICE_BIG_ENDIAN); 119 } 120 121 /* SCSI disk setup. */ 122 dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a")); 123 lsi53c8xx_handle_legacy_cmdline(dev); 124 125 /* Graphics setup. */ 126 if (machine->enable_graphics && vga_interface_type != VGA_NONE) { 127 dev = qdev_new("artist"); 128 s = SYS_BUS_DEVICE(dev); 129 sysbus_realize_and_unref(s, &error_fatal); 130 sysbus_mmio_map(s, 0, LASI_GFX_HPA); 131 sysbus_mmio_map(s, 1, ARTIST_FB_ADDR); 132 } 133 134 /* Network setup. */ 135 for (i = 0; i < nb_nics; i++) { 136 if (!enable_lasi_lan()) { 137 pci_nic_init_nofail(&nd_table[i], pci_bus, "tulip", NULL); 138 } 139 } 140 141 /* Load firmware. Given that this is not "real" firmware, 142 but one explicitly written for the emulation, we might as 143 well load it directly from an ELF image. */ 144 firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, 145 bios_name ? bios_name : 146 "hppa-firmware.img"); 147 if (firmware_filename == NULL) { 148 error_report("no firmware provided"); 149 exit(1); 150 } 151 152 size = load_elf(firmware_filename, NULL, NULL, NULL, 153 &firmware_entry, &firmware_low, &firmware_high, NULL, 154 true, EM_PARISC, 0, 0); 155 156 /* Unfortunately, load_elf sign-extends reading elf32. */ 157 firmware_entry = (target_ureg)firmware_entry; 158 firmware_low = (target_ureg)firmware_low; 159 firmware_high = (target_ureg)firmware_high; 160 161 if (size < 0) { 162 error_report("could not load firmware '%s'", firmware_filename); 163 exit(1); 164 } 165 qemu_log_mask(CPU_LOG_PAGE, "Firmware loaded at 0x%08" PRIx64 166 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 ".\n", 167 firmware_low, firmware_high, firmware_entry); 168 if (firmware_low < FIRMWARE_START || firmware_high >= FIRMWARE_END) { 169 error_report("Firmware overlaps with memory or IO space"); 170 exit(1); 171 } 172 g_free(firmware_filename); 173 174 rom_region = g_new(MemoryRegion, 1); 175 memory_region_init_ram(rom_region, NULL, "firmware", 176 (FIRMWARE_END - FIRMWARE_START), &error_fatal); 177 memory_region_add_subregion(addr_space, FIRMWARE_START, rom_region); 178 179 /* Load kernel */ 180 if (kernel_filename) { 181 size = load_elf(kernel_filename, NULL, &cpu_hppa_to_phys, 182 NULL, &kernel_entry, &kernel_low, &kernel_high, NULL, 183 true, EM_PARISC, 0, 0); 184 185 /* Unfortunately, load_elf sign-extends reading elf32. */ 186 kernel_entry = (target_ureg) cpu_hppa_to_phys(NULL, kernel_entry); 187 kernel_low = (target_ureg)kernel_low; 188 kernel_high = (target_ureg)kernel_high; 189 190 if (size < 0) { 191 error_report("could not load kernel '%s'", kernel_filename); 192 exit(1); 193 } 194 qemu_log_mask(CPU_LOG_PAGE, "Kernel loaded at 0x%08" PRIx64 195 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 196 ", size %" PRIu64 " kB\n", 197 kernel_low, kernel_high, kernel_entry, size / KiB); 198 199 if (kernel_cmdline) { 200 cpu[0]->env.gr[24] = 0x4000; 201 pstrcpy_targphys("cmdline", cpu[0]->env.gr[24], 202 TARGET_PAGE_SIZE, kernel_cmdline); 203 } 204 205 if (initrd_filename) { 206 ram_addr_t initrd_base; 207 int64_t initrd_size; 208 209 initrd_size = get_image_size(initrd_filename); 210 if (initrd_size < 0) { 211 error_report("could not load initial ram disk '%s'", 212 initrd_filename); 213 exit(1); 214 } 215 216 /* Load the initrd image high in memory. 217 Mirror the algorithm used by palo: 218 (1) Due to sign-extension problems and PDC, 219 put the initrd no higher than 1G. 220 (2) Reserve 64k for stack. */ 221 initrd_base = MIN(ram_size, 1 * GiB); 222 initrd_base = initrd_base - 64 * KiB; 223 initrd_base = (initrd_base - initrd_size) & TARGET_PAGE_MASK; 224 225 if (initrd_base < kernel_high) { 226 error_report("kernel and initial ram disk too large!"); 227 exit(1); 228 } 229 230 load_image_targphys(initrd_filename, initrd_base, initrd_size); 231 cpu[0]->env.gr[23] = initrd_base; 232 cpu[0]->env.gr[22] = initrd_base + initrd_size; 233 } 234 } 235 236 if (!kernel_entry) { 237 /* When booting via firmware, tell firmware if we want interactive 238 * mode (kernel_entry=1), and to boot from CD (gr[24]='d') 239 * or hard disc * (gr[24]='c'). 240 */ 241 kernel_entry = boot_menu ? 1 : 0; 242 cpu[0]->env.gr[24] = machine->boot_order[0]; 243 } 244 245 /* We jump to the firmware entry routine and pass the 246 * various parameters in registers. After firmware initialization, 247 * firmware will start the Linux kernel with ramdisk and cmdline. 248 */ 249 cpu[0]->env.gr[26] = ram_size; 250 cpu[0]->env.gr[25] = kernel_entry; 251 252 /* tell firmware how many SMP CPUs to present in inventory table */ 253 cpu[0]->env.gr[21] = smp_cpus; 254 } 255 256 static void hppa_machine_reset(MachineState *ms) 257 { 258 unsigned int smp_cpus = ms->smp.cpus; 259 int i; 260 261 qemu_devices_reset(); 262 263 /* Start all CPUs at the firmware entry point. 264 * Monarch CPU will initialize firmware, secondary CPUs 265 * will enter a small idle look and wait for rendevouz. */ 266 for (i = 0; i < smp_cpus; i++) { 267 cpu_set_pc(CPU(cpu[i]), firmware_entry); 268 cpu[i]->env.gr[5] = CPU_HPA + i * 0x1000; 269 } 270 271 /* already initialized by machine_hppa_init()? */ 272 if (cpu[0]->env.gr[26] == ram_size) { 273 return; 274 } 275 276 cpu[0]->env.gr[26] = ram_size; 277 cpu[0]->env.gr[25] = 0; /* no firmware boot menu */ 278 cpu[0]->env.gr[24] = 'c'; 279 /* gr22/gr23 unused, no initrd while reboot. */ 280 cpu[0]->env.gr[21] = smp_cpus; 281 } 282 283 284 static void machine_hppa_machine_init(MachineClass *mc) 285 { 286 mc->desc = "HPPA generic machine"; 287 mc->default_cpu_type = TYPE_HPPA_CPU; 288 mc->init = machine_hppa_init; 289 mc->reset = hppa_machine_reset; 290 mc->block_default_type = IF_SCSI; 291 mc->max_cpus = HPPA_MAX_CPUS; 292 mc->default_cpus = 1; 293 mc->is_default = true; 294 mc->default_ram_size = 512 * MiB; 295 mc->default_boot_order = "cd"; 296 mc->default_ram_id = "ram"; 297 } 298 299 DEFINE_MACHINE("hppa", machine_hppa_machine_init) 300