1 /* 2 * QEMU RISC-V VirtIO Board 3 * 4 * Copyright (c) 2017 SiFive, Inc. 5 * 6 * RISC-V machine with 16550a UART and VirtIO MMIO 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms and conditions of the GNU General Public License, 10 * version 2 or later, as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include "qemu/osdep.h" 22 #include "qemu/units.h" 23 #include "qemu/log.h" 24 #include "qemu/error-report.h" 25 #include "qapi/error.h" 26 #include "hw/hw.h" 27 #include "hw/boards.h" 28 #include "hw/loader.h" 29 #include "hw/sysbus.h" 30 #include "hw/char/serial.h" 31 #include "target/riscv/cpu.h" 32 #include "hw/riscv/riscv_htif.h" 33 #include "hw/riscv/riscv_hart.h" 34 #include "hw/riscv/sifive_plic.h" 35 #include "hw/riscv/sifive_clint.h" 36 #include "hw/riscv/sifive_test.h" 37 #include "hw/riscv/virt.h" 38 #include "chardev/char.h" 39 #include "sysemu/arch_init.h" 40 #include "sysemu/device_tree.h" 41 #include "exec/address-spaces.h" 42 #include "hw/pci/pci.h" 43 #include "hw/pci-host/gpex.h" 44 #include "elf.h" 45 46 #include <libfdt.h> 47 48 static const struct MemmapEntry { 49 hwaddr base; 50 hwaddr size; 51 } virt_memmap[] = { 52 [VIRT_DEBUG] = { 0x0, 0x100 }, 53 [VIRT_MROM] = { 0x1000, 0x11000 }, 54 [VIRT_TEST] = { 0x100000, 0x1000 }, 55 [VIRT_CLINT] = { 0x2000000, 0x10000 }, 56 [VIRT_PLIC] = { 0xc000000, 0x4000000 }, 57 [VIRT_UART0] = { 0x10000000, 0x100 }, 58 [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, 59 [VIRT_DRAM] = { 0x80000000, 0x0 }, 60 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, 61 [VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 }, 62 [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, 63 }; 64 65 static target_ulong load_kernel(const char *kernel_filename) 66 { 67 uint64_t kernel_entry, kernel_high; 68 69 if (load_elf(kernel_filename, NULL, NULL, NULL, 70 &kernel_entry, NULL, &kernel_high, 71 0, EM_RISCV, 1, 0) < 0) { 72 error_report("could not load kernel '%s'", kernel_filename); 73 exit(1); 74 } 75 return kernel_entry; 76 } 77 78 static hwaddr load_initrd(const char *filename, uint64_t mem_size, 79 uint64_t kernel_entry, hwaddr *start) 80 { 81 int size; 82 83 /* We want to put the initrd far enough into RAM that when the 84 * kernel is uncompressed it will not clobber the initrd. However 85 * on boards without much RAM we must ensure that we still leave 86 * enough room for a decent sized initrd, and on boards with large 87 * amounts of RAM we must avoid the initrd being so far up in RAM 88 * that it is outside lowmem and inaccessible to the kernel. 89 * So for boards with less than 256MB of RAM we put the initrd 90 * halfway into RAM, and for boards with 256MB of RAM or more we put 91 * the initrd at 128MB. 92 */ 93 *start = kernel_entry + MIN(mem_size / 2, 128 * MiB); 94 95 size = load_ramdisk(filename, *start, mem_size - *start); 96 if (size == -1) { 97 size = load_image_targphys(filename, *start, mem_size - *start); 98 if (size == -1) { 99 error_report("could not load ramdisk '%s'", filename); 100 exit(1); 101 } 102 } 103 return *start + size; 104 } 105 106 static void create_pcie_irq_map(void *fdt, char *nodename, 107 uint32_t plic_phandle) 108 { 109 int pin, dev; 110 uint32_t 111 full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {}; 112 uint32_t *irq_map = full_irq_map; 113 114 /* This code creates a standard swizzle of interrupts such that 115 * each device's first interrupt is based on it's PCI_SLOT number. 116 * (See pci_swizzle_map_irq_fn()) 117 * 118 * We only need one entry per interrupt in the table (not one per 119 * possible slot) seeing the interrupt-map-mask will allow the table 120 * to wrap to any number of devices. 121 */ 122 for (dev = 0; dev < GPEX_NUM_IRQS; dev++) { 123 int devfn = dev * 0x8; 124 125 for (pin = 0; pin < GPEX_NUM_IRQS; pin++) { 126 int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS); 127 int i = 0; 128 129 irq_map[i] = cpu_to_be32(devfn << 8); 130 131 i += FDT_PCI_ADDR_CELLS; 132 irq_map[i] = cpu_to_be32(pin + 1); 133 134 i += FDT_PCI_INT_CELLS; 135 irq_map[i++] = cpu_to_be32(plic_phandle); 136 137 i += FDT_PLIC_ADDR_CELLS; 138 irq_map[i] = cpu_to_be32(irq_nr); 139 140 irq_map += FDT_INT_MAP_WIDTH; 141 } 142 } 143 144 qemu_fdt_setprop(fdt, nodename, "interrupt-map", 145 full_irq_map, sizeof(full_irq_map)); 146 147 qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", 148 0x1800, 0, 0, 0x7); 149 } 150 151 static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, 152 uint64_t mem_size, const char *cmdline) 153 { 154 void *fdt; 155 int cpu; 156 uint32_t *cells; 157 char *nodename; 158 uint32_t plic_phandle, phandle = 1; 159 int i; 160 161 fdt = s->fdt = create_device_tree(&s->fdt_size); 162 if (!fdt) { 163 error_report("create_device_tree() failed"); 164 exit(1); 165 } 166 167 qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); 168 qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); 169 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); 170 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); 171 172 qemu_fdt_add_subnode(fdt, "/soc"); 173 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); 174 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); 175 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); 176 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); 177 178 nodename = g_strdup_printf("/memory@%lx", 179 (long)memmap[VIRT_DRAM].base); 180 qemu_fdt_add_subnode(fdt, nodename); 181 qemu_fdt_setprop_cells(fdt, nodename, "reg", 182 memmap[VIRT_DRAM].base >> 32, memmap[VIRT_DRAM].base, 183 mem_size >> 32, mem_size); 184 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); 185 g_free(nodename); 186 187 qemu_fdt_add_subnode(fdt, "/cpus"); 188 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 189 SIFIVE_CLINT_TIMEBASE_FREQ); 190 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); 191 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); 192 193 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 194 int cpu_phandle = phandle++; 195 nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 196 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 197 char *isa = riscv_isa_string(&s->soc.harts[cpu]); 198 qemu_fdt_add_subnode(fdt, nodename); 199 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 200 VIRT_CLOCK_FREQ); 201 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); 202 qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa); 203 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv"); 204 qemu_fdt_setprop_string(fdt, nodename, "status", "okay"); 205 qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu); 206 qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu"); 207 qemu_fdt_add_subnode(fdt, intc); 208 qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle); 209 qemu_fdt_setprop_cell(fdt, intc, "linux,phandle", cpu_phandle); 210 qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc"); 211 qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0); 212 qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1); 213 g_free(isa); 214 g_free(intc); 215 g_free(nodename); 216 } 217 218 cells = g_new0(uint32_t, s->soc.num_harts * 4); 219 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 220 nodename = 221 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 222 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 223 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 224 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); 225 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 226 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); 227 g_free(nodename); 228 } 229 nodename = g_strdup_printf("/soc/clint@%lx", 230 (long)memmap[VIRT_CLINT].base); 231 qemu_fdt_add_subnode(fdt, nodename); 232 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0"); 233 qemu_fdt_setprop_cells(fdt, nodename, "reg", 234 0x0, memmap[VIRT_CLINT].base, 235 0x0, memmap[VIRT_CLINT].size); 236 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 237 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 238 g_free(cells); 239 g_free(nodename); 240 241 plic_phandle = phandle++; 242 cells = g_new0(uint32_t, s->soc.num_harts * 4); 243 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 244 nodename = 245 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 246 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 247 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 248 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); 249 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 250 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); 251 g_free(nodename); 252 } 253 nodename = g_strdup_printf("/soc/interrupt-controller@%lx", 254 (long)memmap[VIRT_PLIC].base); 255 qemu_fdt_add_subnode(fdt, nodename); 256 qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", 257 FDT_PLIC_ADDR_CELLS); 258 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 259 FDT_PLIC_INT_CELLS); 260 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); 261 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); 262 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 263 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 264 qemu_fdt_setprop_cells(fdt, nodename, "reg", 265 0x0, memmap[VIRT_PLIC].base, 266 0x0, memmap[VIRT_PLIC].size); 267 qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control"); 268 qemu_fdt_setprop_cell(fdt, nodename, "riscv,max-priority", 7); 269 qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", VIRTIO_NDEV); 270 qemu_fdt_setprop_cells(fdt, nodename, "phandle", plic_phandle); 271 qemu_fdt_setprop_cells(fdt, nodename, "linux,phandle", plic_phandle); 272 plic_phandle = qemu_fdt_get_phandle(fdt, nodename); 273 g_free(cells); 274 g_free(nodename); 275 276 for (i = 0; i < VIRTIO_COUNT; i++) { 277 nodename = g_strdup_printf("/virtio_mmio@%lx", 278 (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size)); 279 qemu_fdt_add_subnode(fdt, nodename); 280 qemu_fdt_setprop_string(fdt, nodename, "compatible", "virtio,mmio"); 281 qemu_fdt_setprop_cells(fdt, nodename, "reg", 282 0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 283 0x0, memmap[VIRT_VIRTIO].size); 284 qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); 285 qemu_fdt_setprop_cells(fdt, nodename, "interrupts", VIRTIO_IRQ + i); 286 g_free(nodename); 287 } 288 289 nodename = g_strdup_printf("/soc/pci@%lx", 290 (long) memmap[VIRT_PCIE_ECAM].base); 291 qemu_fdt_add_subnode(fdt, nodename); 292 qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", 293 FDT_PCI_ADDR_CELLS); 294 qemu_fdt_setprop_cells(fdt, nodename, "#interrupt-cells", 295 FDT_PCI_INT_CELLS); 296 qemu_fdt_setprop_cells(fdt, nodename, "#size-cells", 0x2); 297 qemu_fdt_setprop_string(fdt, nodename, "compatible", 298 "pci-host-ecam-generic"); 299 qemu_fdt_setprop_string(fdt, nodename, "device_type", "pci"); 300 qemu_fdt_setprop_cell(fdt, nodename, "linux,pci-domain", 0); 301 qemu_fdt_setprop_cells(fdt, nodename, "bus-range", 0, 302 memmap[VIRT_PCIE_ECAM].base / 303 PCIE_MMCFG_SIZE_MIN - 1); 304 qemu_fdt_setprop(fdt, nodename, "dma-coherent", NULL, 0); 305 qemu_fdt_setprop_cells(fdt, nodename, "reg", 0, memmap[VIRT_PCIE_ECAM].base, 306 0, memmap[VIRT_PCIE_ECAM].size); 307 qemu_fdt_setprop_sized_cells(fdt, nodename, "ranges", 308 1, FDT_PCI_RANGE_IOPORT, 2, 0, 309 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, 310 1, FDT_PCI_RANGE_MMIO, 311 2, memmap[VIRT_PCIE_MMIO].base, 312 2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size); 313 create_pcie_irq_map(fdt, nodename, plic_phandle); 314 g_free(nodename); 315 316 nodename = g_strdup_printf("/test@%lx", 317 (long)memmap[VIRT_TEST].base); 318 qemu_fdt_add_subnode(fdt, nodename); 319 qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,test0"); 320 qemu_fdt_setprop_cells(fdt, nodename, "reg", 321 0x0, memmap[VIRT_TEST].base, 322 0x0, memmap[VIRT_TEST].size); 323 g_free(nodename); 324 325 nodename = g_strdup_printf("/uart@%lx", 326 (long)memmap[VIRT_UART0].base); 327 qemu_fdt_add_subnode(fdt, nodename); 328 qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); 329 qemu_fdt_setprop_cells(fdt, nodename, "reg", 330 0x0, memmap[VIRT_UART0].base, 331 0x0, memmap[VIRT_UART0].size); 332 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 3686400); 333 qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); 334 qemu_fdt_setprop_cells(fdt, nodename, "interrupts", UART0_IRQ); 335 336 qemu_fdt_add_subnode(fdt, "/chosen"); 337 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); 338 if (cmdline) { 339 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); 340 } 341 g_free(nodename); 342 343 return fdt; 344 } 345 346 347 static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, 348 hwaddr ecam_base, hwaddr ecam_size, 349 hwaddr mmio_base, hwaddr mmio_size, 350 hwaddr pio_base, 351 DeviceState *plic, bool link_up) 352 { 353 DeviceState *dev; 354 MemoryRegion *ecam_alias, *ecam_reg; 355 MemoryRegion *mmio_alias, *mmio_reg; 356 qemu_irq irq; 357 int i; 358 359 dev = qdev_create(NULL, TYPE_GPEX_HOST); 360 361 qdev_init_nofail(dev); 362 363 ecam_alias = g_new0(MemoryRegion, 1); 364 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 365 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 366 ecam_reg, 0, ecam_size); 367 memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); 368 369 mmio_alias = g_new0(MemoryRegion, 1); 370 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 371 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", 372 mmio_reg, mmio_base, mmio_size); 373 memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); 374 375 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); 376 377 for (i = 0; i < GPEX_NUM_IRQS; i++) { 378 irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); 379 380 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); 381 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); 382 } 383 384 return dev; 385 } 386 387 static void riscv_virt_board_init(MachineState *machine) 388 { 389 const struct MemmapEntry *memmap = virt_memmap; 390 391 RISCVVirtState *s = g_new0(RISCVVirtState, 1); 392 MemoryRegion *system_memory = get_system_memory(); 393 MemoryRegion *main_mem = g_new(MemoryRegion, 1); 394 MemoryRegion *mask_rom = g_new(MemoryRegion, 1); 395 char *plic_hart_config; 396 size_t plic_hart_config_len; 397 int i; 398 void *fdt; 399 400 /* Initialize SOC */ 401 object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), 402 TYPE_RISCV_HART_ARRAY, &error_abort, NULL); 403 object_property_set_str(OBJECT(&s->soc), VIRT_CPU, "cpu-type", 404 &error_abort); 405 object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", 406 &error_abort); 407 object_property_set_bool(OBJECT(&s->soc), true, "realized", 408 &error_abort); 409 410 /* register system main memory (actual RAM) */ 411 memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram", 412 machine->ram_size, &error_fatal); 413 memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base, 414 main_mem); 415 416 /* create device tree */ 417 fdt = create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); 418 419 /* boot rom */ 420 memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom", 421 memmap[VIRT_MROM].size, &error_fatal); 422 memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, 423 mask_rom); 424 425 if (machine->kernel_filename) { 426 uint64_t kernel_entry = load_kernel(machine->kernel_filename); 427 428 if (machine->initrd_filename) { 429 hwaddr start; 430 hwaddr end = load_initrd(machine->initrd_filename, 431 machine->ram_size, kernel_entry, 432 &start); 433 qemu_fdt_setprop_cell(fdt, "/chosen", 434 "linux,initrd-start", start); 435 qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", 436 end); 437 } 438 } 439 440 /* reset vector */ 441 uint32_t reset_vec[8] = { 442 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */ 443 0x02028593, /* addi a1, t0, %pcrel_lo(1b) */ 444 0xf1402573, /* csrr a0, mhartid */ 445 #if defined(TARGET_RISCV32) 446 0x0182a283, /* lw t0, 24(t0) */ 447 #elif defined(TARGET_RISCV64) 448 0x0182b283, /* ld t0, 24(t0) */ 449 #endif 450 0x00028067, /* jr t0 */ 451 0x00000000, 452 memmap[VIRT_DRAM].base, /* start: .dword memmap[VIRT_DRAM].base */ 453 0x00000000, 454 /* dtb: */ 455 }; 456 457 /* copy in the reset vector in little_endian byte order */ 458 for (i = 0; i < sizeof(reset_vec) >> 2; i++) { 459 reset_vec[i] = cpu_to_le32(reset_vec[i]); 460 } 461 rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), 462 memmap[VIRT_MROM].base, &address_space_memory); 463 464 /* copy in the device tree */ 465 if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > 466 memmap[VIRT_MROM].size - sizeof(reset_vec)) { 467 error_report("not enough space to store device-tree"); 468 exit(1); 469 } 470 qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); 471 rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), 472 memmap[VIRT_MROM].base + sizeof(reset_vec), 473 &address_space_memory); 474 475 /* create PLIC hart topology configuration string */ 476 plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus; 477 plic_hart_config = g_malloc0(plic_hart_config_len); 478 for (i = 0; i < smp_cpus; i++) { 479 if (i != 0) { 480 strncat(plic_hart_config, ",", plic_hart_config_len); 481 } 482 strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG, plic_hart_config_len); 483 plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1); 484 } 485 486 /* MMIO */ 487 s->plic = sifive_plic_create(memmap[VIRT_PLIC].base, 488 plic_hart_config, 489 VIRT_PLIC_NUM_SOURCES, 490 VIRT_PLIC_NUM_PRIORITIES, 491 VIRT_PLIC_PRIORITY_BASE, 492 VIRT_PLIC_PENDING_BASE, 493 VIRT_PLIC_ENABLE_BASE, 494 VIRT_PLIC_ENABLE_STRIDE, 495 VIRT_PLIC_CONTEXT_BASE, 496 VIRT_PLIC_CONTEXT_STRIDE, 497 memmap[VIRT_PLIC].size); 498 sifive_clint_create(memmap[VIRT_CLINT].base, 499 memmap[VIRT_CLINT].size, smp_cpus, 500 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); 501 sifive_test_create(memmap[VIRT_TEST].base); 502 503 for (i = 0; i < VIRTIO_COUNT; i++) { 504 sysbus_create_simple("virtio-mmio", 505 memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 506 qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); 507 } 508 509 gpex_pcie_init(system_memory, 510 memmap[VIRT_PCIE_ECAM].base, 511 memmap[VIRT_PCIE_ECAM].size, 512 memmap[VIRT_PCIE_MMIO].base, 513 memmap[VIRT_PCIE_MMIO].size, 514 memmap[VIRT_PCIE_PIO].base, 515 DEVICE(s->plic), true); 516 517 serial_mm_init(system_memory, memmap[VIRT_UART0].base, 518 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, 519 serial_hd(0), DEVICE_LITTLE_ENDIAN); 520 521 g_free(plic_hart_config); 522 } 523 524 static void riscv_virt_board_machine_init(MachineClass *mc) 525 { 526 mc->desc = "RISC-V VirtIO Board (Privileged ISA v1.10)"; 527 mc->init = riscv_virt_board_init; 528 mc->max_cpus = 8; /* hardcoded limit in BBL */ 529 } 530 531 DEFINE_MACHINE("virt", riscv_virt_board_machine_init) 532