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/ide.h" 17 #include "hw/timer/i8254.h" 18 #include "hw/char/serial.h" 19 #include "hw/net/lasi_82596.h" 20 #include "hppa_sys.h" 21 #include "qemu/units.h" 22 #include "qapi/error.h" 23 #include "net/net.h" 24 #include "qemu/log.h" 25 #include "net/net.h" 26 27 #define MAX_IDE_BUS 2 28 29 static ISABus *hppa_isa_bus(void) 30 { 31 ISABus *isa_bus; 32 qemu_irq *isa_irqs; 33 MemoryRegion *isa_region; 34 35 isa_region = g_new(MemoryRegion, 1); 36 memory_region_init_io(isa_region, NULL, &hppa_pci_ignore_ops, 37 NULL, "isa-io", 0x800); 38 memory_region_add_subregion(get_system_memory(), IDE_HPA, 39 isa_region); 40 41 isa_bus = isa_bus_new(NULL, get_system_memory(), isa_region, 42 &error_abort); 43 isa_irqs = i8259_init(isa_bus, 44 /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */ 45 NULL); 46 isa_bus_irqs(isa_bus, isa_irqs); 47 48 return isa_bus; 49 } 50 51 static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr) 52 { 53 addr &= (0x10000000 - 1); 54 return addr; 55 } 56 57 static HPPACPU *cpu[HPPA_MAX_CPUS]; 58 static uint64_t firmware_entry; 59 60 static void machine_hppa_init(MachineState *machine) 61 { 62 const char *kernel_filename = machine->kernel_filename; 63 const char *kernel_cmdline = machine->kernel_cmdline; 64 const char *initrd_filename = machine->initrd_filename; 65 DeviceState *dev; 66 PCIBus *pci_bus; 67 ISABus *isa_bus; 68 qemu_irq rtc_irq, serial_irq; 69 char *firmware_filename; 70 uint64_t firmware_low, firmware_high; 71 long size; 72 uint64_t kernel_entry = 0, kernel_low, kernel_high; 73 MemoryRegion *addr_space = get_system_memory(); 74 MemoryRegion *rom_region; 75 MemoryRegion *cpu_region; 76 long i; 77 unsigned int smp_cpus = machine->smp.cpus; 78 SysBusDevice *s; 79 80 /* Create CPUs. */ 81 for (i = 0; i < smp_cpus; i++) { 82 char *name = g_strdup_printf("cpu%ld-io-eir", i); 83 cpu[i] = HPPA_CPU(cpu_create(machine->cpu_type)); 84 85 cpu_region = g_new(MemoryRegion, 1); 86 memory_region_init_io(cpu_region, OBJECT(cpu[i]), &hppa_io_eir_ops, 87 cpu[i], name, 4); 88 memory_region_add_subregion(addr_space, CPU_HPA + i * 0x1000, 89 cpu_region); 90 g_free(name); 91 } 92 93 /* Main memory region. */ 94 if (machine->ram_size > 3 * GiB) { 95 error_report("RAM size is currently restricted to 3GB"); 96 exit(EXIT_FAILURE); 97 } 98 memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1); 99 100 101 /* Init Lasi chip */ 102 lasi_init(addr_space); 103 104 /* Init Dino (PCI host bus chip). */ 105 pci_bus = dino_init(addr_space, &rtc_irq, &serial_irq); 106 assert(pci_bus); 107 108 /* Create ISA bus. */ 109 isa_bus = hppa_isa_bus(); 110 assert(isa_bus); 111 112 /* Realtime clock, used by firmware for PDC_TOD call. */ 113 mc146818_rtc_init(isa_bus, 2000, rtc_irq); 114 115 /* Serial code setup. */ 116 if (serial_hd(0)) { 117 uint32_t addr = DINO_UART_HPA + 0x800; 118 serial_mm_init(addr_space, addr, 0, serial_irq, 119 115200, serial_hd(0), DEVICE_BIG_ENDIAN); 120 } 121 122 /* SCSI disk setup. */ 123 dev = DEVICE(pci_create_simple(pci_bus, -1, "lsi53c895a")); 124 lsi53c8xx_handle_legacy_cmdline(dev); 125 126 /* Graphics setup. */ 127 if (machine->enable_graphics && vga_interface_type != VGA_NONE) { 128 dev = qdev_create(NULL, "artist"); 129 qdev_init_nofail(dev); 130 s = SYS_BUS_DEVICE(dev); 131 sysbus_mmio_map(s, 0, LASI_GFX_HPA); 132 sysbus_mmio_map(s, 1, ARTIST_FB_ADDR); 133 } 134 135 /* Network setup. */ 136 for (i = 0; i < nb_nics; i++) { 137 if (!enable_lasi_lan()) { 138 pci_nic_init_nofail(&nd_table[i], pci_bus, "tulip", NULL); 139 } 140 } 141 142 /* Load firmware. Given that this is not "real" firmware, 143 but one explicitly written for the emulation, we might as 144 well load it directly from an ELF image. */ 145 firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, 146 bios_name ? bios_name : 147 "hppa-firmware.img"); 148 if (firmware_filename == NULL) { 149 error_report("no firmware provided"); 150 exit(1); 151 } 152 153 size = load_elf(firmware_filename, NULL, NULL, NULL, 154 &firmware_entry, &firmware_low, &firmware_high, NULL, 155 true, EM_PARISC, 0, 0); 156 157 /* Unfortunately, load_elf sign-extends reading elf32. */ 158 firmware_entry = (target_ureg)firmware_entry; 159 firmware_low = (target_ureg)firmware_low; 160 firmware_high = (target_ureg)firmware_high; 161 162 if (size < 0) { 163 error_report("could not load firmware '%s'", firmware_filename); 164 exit(1); 165 } 166 qemu_log_mask(CPU_LOG_PAGE, "Firmware loaded at 0x%08" PRIx64 167 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 ".\n", 168 firmware_low, firmware_high, firmware_entry); 169 if (firmware_low < FIRMWARE_START || firmware_high >= FIRMWARE_END) { 170 error_report("Firmware overlaps with memory or IO space"); 171 exit(1); 172 } 173 g_free(firmware_filename); 174 175 rom_region = g_new(MemoryRegion, 1); 176 memory_region_init_ram(rom_region, NULL, "firmware", 177 (FIRMWARE_END - FIRMWARE_START), &error_fatal); 178 memory_region_add_subregion(addr_space, FIRMWARE_START, rom_region); 179 180 /* Load kernel */ 181 if (kernel_filename) { 182 size = load_elf(kernel_filename, NULL, &cpu_hppa_to_phys, 183 NULL, &kernel_entry, &kernel_low, &kernel_high, NULL, 184 true, EM_PARISC, 0, 0); 185 186 /* Unfortunately, load_elf sign-extends reading elf32. */ 187 kernel_entry = (target_ureg) cpu_hppa_to_phys(NULL, kernel_entry); 188 kernel_low = (target_ureg)kernel_low; 189 kernel_high = (target_ureg)kernel_high; 190 191 if (size < 0) { 192 error_report("could not load kernel '%s'", kernel_filename); 193 exit(1); 194 } 195 qemu_log_mask(CPU_LOG_PAGE, "Kernel loaded at 0x%08" PRIx64 196 "-0x%08" PRIx64 ", entry at 0x%08" PRIx64 197 ", size %" PRIu64 " kB\n", 198 kernel_low, kernel_high, kernel_entry, size / KiB); 199 200 if (kernel_cmdline) { 201 cpu[0]->env.gr[24] = 0x4000; 202 pstrcpy_targphys("cmdline", cpu[0]->env.gr[24], 203 TARGET_PAGE_SIZE, kernel_cmdline); 204 } 205 206 if (initrd_filename) { 207 ram_addr_t initrd_base; 208 int64_t initrd_size; 209 210 initrd_size = get_image_size(initrd_filename); 211 if (initrd_size < 0) { 212 error_report("could not load initial ram disk '%s'", 213 initrd_filename); 214 exit(1); 215 } 216 217 /* Load the initrd image high in memory. 218 Mirror the algorithm used by palo: 219 (1) Due to sign-extension problems and PDC, 220 put the initrd no higher than 1G. 221 (2) Reserve 64k for stack. */ 222 initrd_base = MIN(ram_size, 1 * GiB); 223 initrd_base = initrd_base - 64 * KiB; 224 initrd_base = (initrd_base - initrd_size) & TARGET_PAGE_MASK; 225 226 if (initrd_base < kernel_high) { 227 error_report("kernel and initial ram disk too large!"); 228 exit(1); 229 } 230 231 load_image_targphys(initrd_filename, initrd_base, initrd_size); 232 cpu[0]->env.gr[23] = initrd_base; 233 cpu[0]->env.gr[22] = initrd_base + initrd_size; 234 } 235 } 236 237 if (!kernel_entry) { 238 /* When booting via firmware, tell firmware if we want interactive 239 * mode (kernel_entry=1), and to boot from CD (gr[24]='d') 240 * or hard disc * (gr[24]='c'). 241 */ 242 kernel_entry = boot_menu ? 1 : 0; 243 cpu[0]->env.gr[24] = machine->boot_order[0]; 244 } 245 246 /* We jump to the firmware entry routine and pass the 247 * various parameters in registers. After firmware initialization, 248 * firmware will start the Linux kernel with ramdisk and cmdline. 249 */ 250 cpu[0]->env.gr[26] = ram_size; 251 cpu[0]->env.gr[25] = kernel_entry; 252 253 /* tell firmware how many SMP CPUs to present in inventory table */ 254 cpu[0]->env.gr[21] = smp_cpus; 255 } 256 257 static void hppa_machine_reset(MachineState *ms) 258 { 259 unsigned int smp_cpus = ms->smp.cpus; 260 int i; 261 262 qemu_devices_reset(); 263 264 /* Start all CPUs at the firmware entry point. 265 * Monarch CPU will initialize firmware, secondary CPUs 266 * will enter a small idle look and wait for rendevouz. */ 267 for (i = 0; i < smp_cpus; i++) { 268 cpu_set_pc(CPU(cpu[i]), firmware_entry); 269 cpu[i]->env.gr[5] = CPU_HPA + i * 0x1000; 270 } 271 272 /* already initialized by machine_hppa_init()? */ 273 if (cpu[0]->env.gr[26] == ram_size) { 274 return; 275 } 276 277 cpu[0]->env.gr[26] = ram_size; 278 cpu[0]->env.gr[25] = 0; /* no firmware boot menu */ 279 cpu[0]->env.gr[24] = 'c'; 280 /* gr22/gr23 unused, no initrd while reboot. */ 281 cpu[0]->env.gr[21] = smp_cpus; 282 } 283 284 285 static void machine_hppa_machine_init(MachineClass *mc) 286 { 287 mc->desc = "HPPA generic machine"; 288 mc->default_cpu_type = TYPE_HPPA_CPU; 289 mc->init = machine_hppa_init; 290 mc->reset = hppa_machine_reset; 291 mc->block_default_type = IF_SCSI; 292 mc->max_cpus = HPPA_MAX_CPUS; 293 mc->default_cpus = 1; 294 mc->is_default = true; 295 mc->default_ram_size = 512 * MiB; 296 mc->default_boot_order = "cd"; 297 mc->default_ram_id = "ram"; 298 } 299 300 DEFINE_MACHINE("hppa", machine_hppa_machine_init) 301