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/boards.h" 27 #include "hw/loader.h" 28 #include "hw/sysbus.h" 29 #include "hw/qdev-properties.h" 30 #include "hw/char/serial.h" 31 #include "target/riscv/cpu.h" 32 #include "hw/riscv/riscv_hart.h" 33 #include "hw/riscv/sifive_plic.h" 34 #include "hw/riscv/sifive_clint.h" 35 #include "hw/riscv/sifive_test.h" 36 #include "hw/riscv/virt.h" 37 #include "hw/riscv/boot.h" 38 #include "chardev/char.h" 39 #include "sysemu/arch_init.h" 40 #include "sysemu/device_tree.h" 41 #include "sysemu/sysemu.h" 42 #include "exec/address-spaces.h" 43 #include "hw/pci/pci.h" 44 #include "hw/pci-host/gpex.h" 45 46 #include <libfdt.h> 47 48 #if defined(TARGET_RISCV32) 49 # define BIOS_FILENAME "opensbi-riscv32-virt-fw_jump.bin" 50 #else 51 # define BIOS_FILENAME "opensbi-riscv64-virt-fw_jump.bin" 52 #endif 53 54 static const struct MemmapEntry { 55 hwaddr base; 56 hwaddr size; 57 } virt_memmap[] = { 58 [VIRT_DEBUG] = { 0x0, 0x100 }, 59 [VIRT_MROM] = { 0x1000, 0x11000 }, 60 [VIRT_TEST] = { 0x100000, 0x1000 }, 61 [VIRT_CLINT] = { 0x2000000, 0x10000 }, 62 [VIRT_PLIC] = { 0xc000000, 0x4000000 }, 63 [VIRT_UART0] = { 0x10000000, 0x100 }, 64 [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, 65 [VIRT_FLASH] = { 0x20000000, 0x4000000 }, 66 [VIRT_DRAM] = { 0x80000000, 0x0 }, 67 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, 68 [VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 }, 69 [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, 70 }; 71 72 #define VIRT_FLASH_SECTOR_SIZE (256 * KiB) 73 74 static PFlashCFI01 *virt_flash_create1(RISCVVirtState *s, 75 const char *name, 76 const char *alias_prop_name) 77 { 78 /* 79 * Create a single flash device. We use the same parameters as 80 * the flash devices on the ARM virt board. 81 */ 82 DeviceState *dev = qdev_create(NULL, TYPE_PFLASH_CFI01); 83 84 qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE); 85 qdev_prop_set_uint8(dev, "width", 4); 86 qdev_prop_set_uint8(dev, "device-width", 2); 87 qdev_prop_set_bit(dev, "big-endian", false); 88 qdev_prop_set_uint16(dev, "id0", 0x89); 89 qdev_prop_set_uint16(dev, "id1", 0x18); 90 qdev_prop_set_uint16(dev, "id2", 0x00); 91 qdev_prop_set_uint16(dev, "id3", 0x00); 92 qdev_prop_set_string(dev, "name", name); 93 94 object_property_add_child(OBJECT(s), name, OBJECT(dev), 95 &error_abort); 96 object_property_add_alias(OBJECT(s), alias_prop_name, 97 OBJECT(dev), "drive", &error_abort); 98 99 return PFLASH_CFI01(dev); 100 } 101 102 static void virt_flash_create(RISCVVirtState *s) 103 { 104 s->flash[0] = virt_flash_create1(s, "virt.flash0", "pflash0"); 105 s->flash[1] = virt_flash_create1(s, "virt.flash1", "pflash1"); 106 } 107 108 static void virt_flash_map1(PFlashCFI01 *flash, 109 hwaddr base, hwaddr size, 110 MemoryRegion *sysmem) 111 { 112 DeviceState *dev = DEVICE(flash); 113 114 assert(size % VIRT_FLASH_SECTOR_SIZE == 0); 115 assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX); 116 qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE); 117 qdev_init_nofail(dev); 118 119 memory_region_add_subregion(sysmem, base, 120 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 121 0)); 122 } 123 124 static void virt_flash_map(RISCVVirtState *s, 125 MemoryRegion *sysmem) 126 { 127 hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; 128 hwaddr flashbase = virt_memmap[VIRT_FLASH].base; 129 130 virt_flash_map1(s->flash[0], flashbase, flashsize, 131 sysmem); 132 virt_flash_map1(s->flash[1], flashbase + flashsize, flashsize, 133 sysmem); 134 } 135 136 static void create_pcie_irq_map(void *fdt, char *nodename, 137 uint32_t plic_phandle) 138 { 139 int pin, dev; 140 uint32_t 141 full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {}; 142 uint32_t *irq_map = full_irq_map; 143 144 /* This code creates a standard swizzle of interrupts such that 145 * each device's first interrupt is based on it's PCI_SLOT number. 146 * (See pci_swizzle_map_irq_fn()) 147 * 148 * We only need one entry per interrupt in the table (not one per 149 * possible slot) seeing the interrupt-map-mask will allow the table 150 * to wrap to any number of devices. 151 */ 152 for (dev = 0; dev < GPEX_NUM_IRQS; dev++) { 153 int devfn = dev * 0x8; 154 155 for (pin = 0; pin < GPEX_NUM_IRQS; pin++) { 156 int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS); 157 int i = 0; 158 159 irq_map[i] = cpu_to_be32(devfn << 8); 160 161 i += FDT_PCI_ADDR_CELLS; 162 irq_map[i] = cpu_to_be32(pin + 1); 163 164 i += FDT_PCI_INT_CELLS; 165 irq_map[i++] = cpu_to_be32(plic_phandle); 166 167 i += FDT_PLIC_ADDR_CELLS; 168 irq_map[i] = cpu_to_be32(irq_nr); 169 170 irq_map += FDT_INT_MAP_WIDTH; 171 } 172 } 173 174 qemu_fdt_setprop(fdt, nodename, "interrupt-map", 175 full_irq_map, sizeof(full_irq_map)); 176 177 qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", 178 0x1800, 0, 0, 0x7); 179 } 180 181 static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, 182 uint64_t mem_size, const char *cmdline) 183 { 184 void *fdt; 185 int cpu; 186 uint32_t *cells; 187 char *nodename; 188 uint32_t plic_phandle, phandle = 1; 189 int i; 190 hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; 191 hwaddr flashbase = virt_memmap[VIRT_FLASH].base; 192 193 fdt = s->fdt = create_device_tree(&s->fdt_size); 194 if (!fdt) { 195 error_report("create_device_tree() failed"); 196 exit(1); 197 } 198 199 qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); 200 qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); 201 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); 202 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); 203 204 qemu_fdt_add_subnode(fdt, "/soc"); 205 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); 206 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); 207 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); 208 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); 209 210 nodename = g_strdup_printf("/memory@%lx", 211 (long)memmap[VIRT_DRAM].base); 212 qemu_fdt_add_subnode(fdt, nodename); 213 qemu_fdt_setprop_cells(fdt, nodename, "reg", 214 memmap[VIRT_DRAM].base >> 32, memmap[VIRT_DRAM].base, 215 mem_size >> 32, mem_size); 216 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); 217 g_free(nodename); 218 219 qemu_fdt_add_subnode(fdt, "/cpus"); 220 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 221 SIFIVE_CLINT_TIMEBASE_FREQ); 222 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); 223 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); 224 225 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 226 int cpu_phandle = phandle++; 227 int intc_phandle; 228 nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 229 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 230 char *isa = riscv_isa_string(&s->soc.harts[cpu]); 231 qemu_fdt_add_subnode(fdt, nodename); 232 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); 233 qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa); 234 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv"); 235 qemu_fdt_setprop_string(fdt, nodename, "status", "okay"); 236 qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu); 237 qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu"); 238 qemu_fdt_setprop_cell(fdt, nodename, "phandle", cpu_phandle); 239 intc_phandle = phandle++; 240 qemu_fdt_add_subnode(fdt, intc); 241 qemu_fdt_setprop_cell(fdt, intc, "phandle", intc_phandle); 242 qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc"); 243 qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0); 244 qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1); 245 g_free(isa); 246 g_free(intc); 247 g_free(nodename); 248 } 249 250 /* Add cpu-topology node */ 251 qemu_fdt_add_subnode(fdt, "/cpus/cpu-map"); 252 qemu_fdt_add_subnode(fdt, "/cpus/cpu-map/cluster0"); 253 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 254 char *core_nodename = g_strdup_printf("/cpus/cpu-map/cluster0/core%d", 255 cpu); 256 char *cpu_nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 257 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, cpu_nodename); 258 qemu_fdt_add_subnode(fdt, core_nodename); 259 qemu_fdt_setprop_cell(fdt, core_nodename, "cpu", intc_phandle); 260 g_free(core_nodename); 261 g_free(cpu_nodename); 262 } 263 264 cells = g_new0(uint32_t, s->soc.num_harts * 4); 265 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 266 nodename = 267 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 268 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 269 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 270 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); 271 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 272 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); 273 g_free(nodename); 274 } 275 nodename = g_strdup_printf("/soc/clint@%lx", 276 (long)memmap[VIRT_CLINT].base); 277 qemu_fdt_add_subnode(fdt, nodename); 278 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0"); 279 qemu_fdt_setprop_cells(fdt, nodename, "reg", 280 0x0, memmap[VIRT_CLINT].base, 281 0x0, memmap[VIRT_CLINT].size); 282 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 283 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 284 g_free(cells); 285 g_free(nodename); 286 287 plic_phandle = phandle++; 288 cells = g_new0(uint32_t, s->soc.num_harts * 4); 289 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 290 nodename = 291 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 292 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 293 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 294 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); 295 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 296 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); 297 g_free(nodename); 298 } 299 nodename = g_strdup_printf("/soc/interrupt-controller@%lx", 300 (long)memmap[VIRT_PLIC].base); 301 qemu_fdt_add_subnode(fdt, nodename); 302 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 303 FDT_PLIC_ADDR_CELLS); 304 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 305 FDT_PLIC_INT_CELLS); 306 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); 307 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); 308 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 309 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 310 qemu_fdt_setprop_cells(fdt, nodename, "reg", 311 0x0, memmap[VIRT_PLIC].base, 312 0x0, memmap[VIRT_PLIC].size); 313 qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", VIRTIO_NDEV); 314 qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle); 315 plic_phandle = qemu_fdt_get_phandle(fdt, nodename); 316 g_free(cells); 317 g_free(nodename); 318 319 for (i = 0; i < VIRTIO_COUNT; i++) { 320 nodename = g_strdup_printf("/virtio_mmio@%lx", 321 (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size)); 322 qemu_fdt_add_subnode(fdt, nodename); 323 qemu_fdt_setprop_string(fdt, nodename, "compatible", "virtio,mmio"); 324 qemu_fdt_setprop_cells(fdt, nodename, "reg", 325 0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 326 0x0, memmap[VIRT_VIRTIO].size); 327 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 328 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", VIRTIO_IRQ + i); 329 g_free(nodename); 330 } 331 332 nodename = g_strdup_printf("/soc/pci@%lx", 333 (long) memmap[VIRT_PCIE_ECAM].base); 334 qemu_fdt_add_subnode(fdt, nodename); 335 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 336 FDT_PCI_ADDR_CELLS); 337 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 338 FDT_PCI_INT_CELLS); 339 qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0x2); 340 qemu_fdt_setprop_string(fdt, nodename, "compatible", 341 "pci-host-ecam-generic"); 342 qemu_fdt_setprop_string(fdt, nodename, "device_type", "pci"); 343 qemu_fdt_setprop_cell(fdt, nodename, "linux,pci-domain", 0); 344 qemu_fdt_setprop_cells(fdt, nodename, "bus-range", 0, 345 memmap[VIRT_PCIE_ECAM].size / 346 PCIE_MMCFG_SIZE_MIN - 1); 347 qemu_fdt_setprop(fdt, nodename, "dma-coherent", NULL, 0); 348 qemu_fdt_setprop_cells(fdt, nodename, "reg", 0, memmap[VIRT_PCIE_ECAM].base, 349 0, memmap[VIRT_PCIE_ECAM].size); 350 qemu_fdt_setprop_sized_cells(fdt, nodename, "ranges", 351 1, FDT_PCI_RANGE_IOPORT, 2, 0, 352 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, 353 1, FDT_PCI_RANGE_MMIO, 354 2, memmap[VIRT_PCIE_MMIO].base, 355 2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size); 356 create_pcie_irq_map(fdt, nodename, plic_phandle); 357 g_free(nodename); 358 359 nodename = g_strdup_printf("/test@%lx", 360 (long)memmap[VIRT_TEST].base); 361 qemu_fdt_add_subnode(fdt, nodename); 362 { 363 const char compat[] = "sifive,test1\0sifive,test0"; 364 qemu_fdt_setprop(fdt, nodename, "compatible", compat, sizeof(compat)); 365 } 366 qemu_fdt_setprop_cells(fdt, nodename, "reg", 367 0x0, memmap[VIRT_TEST].base, 368 0x0, memmap[VIRT_TEST].size); 369 g_free(nodename); 370 371 nodename = g_strdup_printf("/uart@%lx", 372 (long)memmap[VIRT_UART0].base); 373 qemu_fdt_add_subnode(fdt, nodename); 374 qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); 375 qemu_fdt_setprop_cells(fdt, nodename, "reg", 376 0x0, memmap[VIRT_UART0].base, 377 0x0, memmap[VIRT_UART0].size); 378 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 3686400); 379 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 380 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", UART0_IRQ); 381 382 qemu_fdt_add_subnode(fdt, "/chosen"); 383 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); 384 if (cmdline) { 385 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); 386 } 387 g_free(nodename); 388 389 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase); 390 qemu_fdt_add_subnode(s->fdt, nodename); 391 qemu_fdt_setprop_string(s->fdt, nodename, "compatible", "cfi-flash"); 392 qemu_fdt_setprop_sized_cells(s->fdt, nodename, "reg", 393 2, flashbase, 2, flashsize, 394 2, flashbase + flashsize, 2, flashsize); 395 qemu_fdt_setprop_cell(s->fdt, nodename, "bank-width", 4); 396 g_free(nodename); 397 } 398 399 400 static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, 401 hwaddr ecam_base, hwaddr ecam_size, 402 hwaddr mmio_base, hwaddr mmio_size, 403 hwaddr pio_base, 404 DeviceState *plic, bool link_up) 405 { 406 DeviceState *dev; 407 MemoryRegion *ecam_alias, *ecam_reg; 408 MemoryRegion *mmio_alias, *mmio_reg; 409 qemu_irq irq; 410 int i; 411 412 dev = qdev_create(NULL, TYPE_GPEX_HOST); 413 414 qdev_init_nofail(dev); 415 416 ecam_alias = g_new0(MemoryRegion, 1); 417 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 418 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 419 ecam_reg, 0, ecam_size); 420 memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); 421 422 mmio_alias = g_new0(MemoryRegion, 1); 423 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 424 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", 425 mmio_reg, mmio_base, mmio_size); 426 memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); 427 428 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); 429 430 for (i = 0; i < GPEX_NUM_IRQS; i++) { 431 irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); 432 433 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); 434 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); 435 } 436 437 return dev; 438 } 439 440 static void riscv_virt_board_init(MachineState *machine) 441 { 442 const struct MemmapEntry *memmap = virt_memmap; 443 RISCVVirtState *s = RISCV_VIRT_MACHINE(machine); 444 MemoryRegion *system_memory = get_system_memory(); 445 MemoryRegion *main_mem = g_new(MemoryRegion, 1); 446 MemoryRegion *mask_rom = g_new(MemoryRegion, 1); 447 char *plic_hart_config; 448 size_t plic_hart_config_len; 449 target_ulong start_addr = memmap[VIRT_DRAM].base; 450 int i; 451 unsigned int smp_cpus = machine->smp.cpus; 452 453 /* Initialize SOC */ 454 object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), 455 TYPE_RISCV_HART_ARRAY, &error_abort, NULL); 456 object_property_set_str(OBJECT(&s->soc), machine->cpu_type, "cpu-type", 457 &error_abort); 458 object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", 459 &error_abort); 460 object_property_set_bool(OBJECT(&s->soc), true, "realized", 461 &error_abort); 462 463 /* register system main memory (actual RAM) */ 464 memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram", 465 machine->ram_size, &error_fatal); 466 memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base, 467 main_mem); 468 469 /* create device tree */ 470 create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); 471 472 /* boot rom */ 473 memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom", 474 memmap[VIRT_MROM].size, &error_fatal); 475 memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, 476 mask_rom); 477 478 riscv_find_and_load_firmware(machine, BIOS_FILENAME, 479 memmap[VIRT_DRAM].base); 480 481 if (machine->kernel_filename) { 482 uint64_t kernel_entry = riscv_load_kernel(machine->kernel_filename, 483 NULL); 484 485 if (machine->initrd_filename) { 486 hwaddr start; 487 hwaddr end = riscv_load_initrd(machine->initrd_filename, 488 machine->ram_size, kernel_entry, 489 &start); 490 qemu_fdt_setprop_cell(s->fdt, "/chosen", 491 "linux,initrd-start", start); 492 qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end", 493 end); 494 } 495 } 496 497 if (drive_get(IF_PFLASH, 0, 0)) { 498 /* 499 * Pflash was supplied, let's overwrite the address we jump to after 500 * reset to the base of the flash. 501 */ 502 start_addr = virt_memmap[VIRT_FLASH].base; 503 } 504 505 /* reset vector */ 506 uint32_t reset_vec[8] = { 507 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */ 508 0x02028593, /* addi a1, t0, %pcrel_lo(1b) */ 509 0xf1402573, /* csrr a0, mhartid */ 510 #if defined(TARGET_RISCV32) 511 0x0182a283, /* lw t0, 24(t0) */ 512 #elif defined(TARGET_RISCV64) 513 0x0182b283, /* ld t0, 24(t0) */ 514 #endif 515 0x00028067, /* jr t0 */ 516 0x00000000, 517 start_addr, /* start: .dword */ 518 0x00000000, 519 /* dtb: */ 520 }; 521 522 /* copy in the reset vector in little_endian byte order */ 523 for (i = 0; i < sizeof(reset_vec) >> 2; i++) { 524 reset_vec[i] = cpu_to_le32(reset_vec[i]); 525 } 526 rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), 527 memmap[VIRT_MROM].base, &address_space_memory); 528 529 /* copy in the device tree */ 530 if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > 531 memmap[VIRT_MROM].size - sizeof(reset_vec)) { 532 error_report("not enough space to store device-tree"); 533 exit(1); 534 } 535 qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); 536 rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), 537 memmap[VIRT_MROM].base + sizeof(reset_vec), 538 &address_space_memory); 539 540 /* create PLIC hart topology configuration string */ 541 plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus; 542 plic_hart_config = g_malloc0(plic_hart_config_len); 543 for (i = 0; i < smp_cpus; i++) { 544 if (i != 0) { 545 strncat(plic_hart_config, ",", plic_hart_config_len); 546 } 547 strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG, plic_hart_config_len); 548 plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1); 549 } 550 551 /* MMIO */ 552 s->plic = sifive_plic_create(memmap[VIRT_PLIC].base, 553 plic_hart_config, 554 VIRT_PLIC_NUM_SOURCES, 555 VIRT_PLIC_NUM_PRIORITIES, 556 VIRT_PLIC_PRIORITY_BASE, 557 VIRT_PLIC_PENDING_BASE, 558 VIRT_PLIC_ENABLE_BASE, 559 VIRT_PLIC_ENABLE_STRIDE, 560 VIRT_PLIC_CONTEXT_BASE, 561 VIRT_PLIC_CONTEXT_STRIDE, 562 memmap[VIRT_PLIC].size); 563 sifive_clint_create(memmap[VIRT_CLINT].base, 564 memmap[VIRT_CLINT].size, smp_cpus, 565 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); 566 sifive_test_create(memmap[VIRT_TEST].base); 567 568 for (i = 0; i < VIRTIO_COUNT; i++) { 569 sysbus_create_simple("virtio-mmio", 570 memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 571 qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); 572 } 573 574 gpex_pcie_init(system_memory, 575 memmap[VIRT_PCIE_ECAM].base, 576 memmap[VIRT_PCIE_ECAM].size, 577 memmap[VIRT_PCIE_MMIO].base, 578 memmap[VIRT_PCIE_MMIO].size, 579 memmap[VIRT_PCIE_PIO].base, 580 DEVICE(s->plic), true); 581 582 serial_mm_init(system_memory, memmap[VIRT_UART0].base, 583 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, 584 serial_hd(0), DEVICE_LITTLE_ENDIAN); 585 586 virt_flash_create(s); 587 588 for (i = 0; i < ARRAY_SIZE(s->flash); i++) { 589 /* Map legacy -drive if=pflash to machine properties */ 590 pflash_cfi01_legacy_drive(s->flash[i], 591 drive_get(IF_PFLASH, 0, i)); 592 } 593 virt_flash_map(s, system_memory); 594 595 g_free(plic_hart_config); 596 } 597 598 static void riscv_virt_machine_instance_init(Object *obj) 599 { 600 } 601 602 static void riscv_virt_machine_class_init(ObjectClass *oc, void *data) 603 { 604 MachineClass *mc = MACHINE_CLASS(oc); 605 606 mc->desc = "RISC-V VirtIO board"; 607 mc->init = riscv_virt_board_init; 608 mc->max_cpus = 8; 609 mc->default_cpu_type = VIRT_CPU; 610 } 611 612 static const TypeInfo riscv_virt_machine_typeinfo = { 613 .name = MACHINE_TYPE_NAME("virt"), 614 .parent = TYPE_MACHINE, 615 .class_init = riscv_virt_machine_class_init, 616 .instance_init = riscv_virt_machine_instance_init, 617 .instance_size = sizeof(RISCVVirtState), 618 }; 619 620 static void riscv_virt_machine_init_register_types(void) 621 { 622 type_register_static(&riscv_virt_machine_typeinfo); 623 } 624 625 type_init(riscv_virt_machine_init_register_types) 626