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 "hw/pci/pci.h" 43 #include "hw/pci-host/gpex.h" 44 45 #if defined(TARGET_RISCV32) 46 # define BIOS_FILENAME "opensbi-riscv32-virt-fw_jump.bin" 47 #else 48 # define BIOS_FILENAME "opensbi-riscv64-virt-fw_jump.bin" 49 #endif 50 51 static const struct MemmapEntry { 52 hwaddr base; 53 hwaddr size; 54 } virt_memmap[] = { 55 [VIRT_DEBUG] = { 0x0, 0x100 }, 56 [VIRT_MROM] = { 0x1000, 0xf000 }, 57 [VIRT_TEST] = { 0x100000, 0x1000 }, 58 [VIRT_RTC] = { 0x101000, 0x1000 }, 59 [VIRT_CLINT] = { 0x2000000, 0x10000 }, 60 [VIRT_PCIE_PIO] = { 0x3000000, 0x10000 }, 61 [VIRT_PLIC] = { 0xc000000, 0x4000000 }, 62 [VIRT_UART0] = { 0x10000000, 0x100 }, 63 [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, 64 [VIRT_FLASH] = { 0x20000000, 0x4000000 }, 65 [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, 66 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, 67 [VIRT_DRAM] = { 0x80000000, 0x0 }, 68 }; 69 70 #define VIRT_FLASH_SECTOR_SIZE (256 * KiB) 71 72 static PFlashCFI01 *virt_flash_create1(RISCVVirtState *s, 73 const char *name, 74 const char *alias_prop_name) 75 { 76 /* 77 * Create a single flash device. We use the same parameters as 78 * the flash devices on the ARM virt board. 79 */ 80 DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01); 81 82 qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE); 83 qdev_prop_set_uint8(dev, "width", 4); 84 qdev_prop_set_uint8(dev, "device-width", 2); 85 qdev_prop_set_bit(dev, "big-endian", false); 86 qdev_prop_set_uint16(dev, "id0", 0x89); 87 qdev_prop_set_uint16(dev, "id1", 0x18); 88 qdev_prop_set_uint16(dev, "id2", 0x00); 89 qdev_prop_set_uint16(dev, "id3", 0x00); 90 qdev_prop_set_string(dev, "name", name); 91 92 object_property_add_child(OBJECT(s), name, OBJECT(dev)); 93 object_property_add_alias(OBJECT(s), alias_prop_name, 94 OBJECT(dev), "drive"); 95 96 return PFLASH_CFI01(dev); 97 } 98 99 static void virt_flash_create(RISCVVirtState *s) 100 { 101 s->flash[0] = virt_flash_create1(s, "virt.flash0", "pflash0"); 102 s->flash[1] = virt_flash_create1(s, "virt.flash1", "pflash1"); 103 } 104 105 static void virt_flash_map1(PFlashCFI01 *flash, 106 hwaddr base, hwaddr size, 107 MemoryRegion *sysmem) 108 { 109 DeviceState *dev = DEVICE(flash); 110 111 assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE)); 112 assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX); 113 qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE); 114 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 115 116 memory_region_add_subregion(sysmem, base, 117 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 118 0)); 119 } 120 121 static void virt_flash_map(RISCVVirtState *s, 122 MemoryRegion *sysmem) 123 { 124 hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; 125 hwaddr flashbase = virt_memmap[VIRT_FLASH].base; 126 127 virt_flash_map1(s->flash[0], flashbase, flashsize, 128 sysmem); 129 virt_flash_map1(s->flash[1], flashbase + flashsize, flashsize, 130 sysmem); 131 } 132 133 static void create_pcie_irq_map(void *fdt, char *nodename, 134 uint32_t plic_phandle) 135 { 136 int pin, dev; 137 uint32_t 138 full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {}; 139 uint32_t *irq_map = full_irq_map; 140 141 /* This code creates a standard swizzle of interrupts such that 142 * each device's first interrupt is based on it's PCI_SLOT number. 143 * (See pci_swizzle_map_irq_fn()) 144 * 145 * We only need one entry per interrupt in the table (not one per 146 * possible slot) seeing the interrupt-map-mask will allow the table 147 * to wrap to any number of devices. 148 */ 149 for (dev = 0; dev < GPEX_NUM_IRQS; dev++) { 150 int devfn = dev * 0x8; 151 152 for (pin = 0; pin < GPEX_NUM_IRQS; pin++) { 153 int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS); 154 int i = 0; 155 156 irq_map[i] = cpu_to_be32(devfn << 8); 157 158 i += FDT_PCI_ADDR_CELLS; 159 irq_map[i] = cpu_to_be32(pin + 1); 160 161 i += FDT_PCI_INT_CELLS; 162 irq_map[i++] = cpu_to_be32(plic_phandle); 163 164 i += FDT_PLIC_ADDR_CELLS; 165 irq_map[i] = cpu_to_be32(irq_nr); 166 167 irq_map += FDT_INT_MAP_WIDTH; 168 } 169 } 170 171 qemu_fdt_setprop(fdt, nodename, "interrupt-map", 172 full_irq_map, sizeof(full_irq_map)); 173 174 qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", 175 0x1800, 0, 0, 0x7); 176 } 177 178 static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, 179 uint64_t mem_size, const char *cmdline) 180 { 181 void *fdt; 182 int cpu, i; 183 uint32_t *cells; 184 char *nodename; 185 uint32_t plic_phandle, test_phandle, phandle = 1; 186 hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; 187 hwaddr flashbase = virt_memmap[VIRT_FLASH].base; 188 189 fdt = s->fdt = create_device_tree(&s->fdt_size); 190 if (!fdt) { 191 error_report("create_device_tree() failed"); 192 exit(1); 193 } 194 195 qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); 196 qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); 197 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); 198 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); 199 200 qemu_fdt_add_subnode(fdt, "/soc"); 201 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); 202 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); 203 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); 204 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); 205 206 nodename = g_strdup_printf("/memory@%lx", 207 (long)memmap[VIRT_DRAM].base); 208 qemu_fdt_add_subnode(fdt, nodename); 209 qemu_fdt_setprop_cells(fdt, nodename, "reg", 210 memmap[VIRT_DRAM].base >> 32, memmap[VIRT_DRAM].base, 211 mem_size >> 32, mem_size); 212 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); 213 g_free(nodename); 214 215 qemu_fdt_add_subnode(fdt, "/cpus"); 216 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 217 SIFIVE_CLINT_TIMEBASE_FREQ); 218 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); 219 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); 220 221 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 222 int cpu_phandle = phandle++; 223 int intc_phandle; 224 nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 225 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 226 char *isa = riscv_isa_string(&s->soc.harts[cpu]); 227 qemu_fdt_add_subnode(fdt, nodename); 228 #if defined(TARGET_RISCV32) 229 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32"); 230 #else 231 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); 232 #endif 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 test_phandle = phandle++; 360 nodename = g_strdup_printf("/test@%lx", 361 (long)memmap[VIRT_TEST].base); 362 qemu_fdt_add_subnode(fdt, nodename); 363 { 364 const char compat[] = "sifive,test1\0sifive,test0\0syscon"; 365 qemu_fdt_setprop(fdt, nodename, "compatible", compat, sizeof(compat)); 366 } 367 qemu_fdt_setprop_cells(fdt, nodename, "reg", 368 0x0, memmap[VIRT_TEST].base, 369 0x0, memmap[VIRT_TEST].size); 370 qemu_fdt_setprop_cell(fdt, nodename, "phandle", test_phandle); 371 test_phandle = qemu_fdt_get_phandle(fdt, nodename); 372 g_free(nodename); 373 374 nodename = g_strdup_printf("/reboot"); 375 qemu_fdt_add_subnode(fdt, nodename); 376 qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-reboot"); 377 qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); 378 qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); 379 qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_RESET); 380 g_free(nodename); 381 382 nodename = g_strdup_printf("/poweroff"); 383 qemu_fdt_add_subnode(fdt, nodename); 384 qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-poweroff"); 385 qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); 386 qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); 387 qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_PASS); 388 g_free(nodename); 389 390 nodename = g_strdup_printf("/uart@%lx", 391 (long)memmap[VIRT_UART0].base); 392 qemu_fdt_add_subnode(fdt, nodename); 393 qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); 394 qemu_fdt_setprop_cells(fdt, nodename, "reg", 395 0x0, memmap[VIRT_UART0].base, 396 0x0, memmap[VIRT_UART0].size); 397 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 3686400); 398 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 399 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", UART0_IRQ); 400 401 qemu_fdt_add_subnode(fdt, "/chosen"); 402 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); 403 if (cmdline) { 404 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); 405 } 406 g_free(nodename); 407 408 nodename = g_strdup_printf("/rtc@%lx", 409 (long)memmap[VIRT_RTC].base); 410 qemu_fdt_add_subnode(fdt, nodename); 411 qemu_fdt_setprop_string(fdt, nodename, "compatible", 412 "google,goldfish-rtc"); 413 qemu_fdt_setprop_cells(fdt, nodename, "reg", 414 0x0, memmap[VIRT_RTC].base, 415 0x0, memmap[VIRT_RTC].size); 416 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 417 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", RTC_IRQ); 418 g_free(nodename); 419 420 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase); 421 qemu_fdt_add_subnode(s->fdt, nodename); 422 qemu_fdt_setprop_string(s->fdt, nodename, "compatible", "cfi-flash"); 423 qemu_fdt_setprop_sized_cells(s->fdt, nodename, "reg", 424 2, flashbase, 2, flashsize, 425 2, flashbase + flashsize, 2, flashsize); 426 qemu_fdt_setprop_cell(s->fdt, nodename, "bank-width", 4); 427 g_free(nodename); 428 } 429 430 431 static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, 432 hwaddr ecam_base, hwaddr ecam_size, 433 hwaddr mmio_base, hwaddr mmio_size, 434 hwaddr pio_base, 435 DeviceState *plic, bool link_up) 436 { 437 DeviceState *dev; 438 MemoryRegion *ecam_alias, *ecam_reg; 439 MemoryRegion *mmio_alias, *mmio_reg; 440 qemu_irq irq; 441 int i; 442 443 dev = qdev_new(TYPE_GPEX_HOST); 444 445 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 446 447 ecam_alias = g_new0(MemoryRegion, 1); 448 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 449 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 450 ecam_reg, 0, ecam_size); 451 memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); 452 453 mmio_alias = g_new0(MemoryRegion, 1); 454 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 455 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", 456 mmio_reg, mmio_base, mmio_size); 457 memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); 458 459 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); 460 461 for (i = 0; i < GPEX_NUM_IRQS; i++) { 462 irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); 463 464 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); 465 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); 466 } 467 468 return dev; 469 } 470 471 static void virt_machine_init(MachineState *machine) 472 { 473 const struct MemmapEntry *memmap = virt_memmap; 474 RISCVVirtState *s = RISCV_VIRT_MACHINE(machine); 475 MemoryRegion *system_memory = get_system_memory(); 476 MemoryRegion *main_mem = g_new(MemoryRegion, 1); 477 MemoryRegion *mask_rom = g_new(MemoryRegion, 1); 478 char *plic_hart_config; 479 size_t plic_hart_config_len; 480 target_ulong start_addr = memmap[VIRT_DRAM].base; 481 uint32_t fdt_load_addr; 482 uint64_t kernel_entry; 483 int i; 484 unsigned int smp_cpus = machine->smp.cpus; 485 486 /* Initialize SOC */ 487 object_initialize_child(OBJECT(machine), "soc", &s->soc, 488 TYPE_RISCV_HART_ARRAY); 489 object_property_set_str(OBJECT(&s->soc), "cpu-type", machine->cpu_type, 490 &error_abort); 491 object_property_set_int(OBJECT(&s->soc), "num-harts", smp_cpus, 492 &error_abort); 493 sysbus_realize(SYS_BUS_DEVICE(&s->soc), &error_abort); 494 495 /* register system main memory (actual RAM) */ 496 memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram", 497 machine->ram_size, &error_fatal); 498 memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base, 499 main_mem); 500 501 /* create device tree */ 502 create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); 503 504 /* boot rom */ 505 memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom", 506 memmap[VIRT_MROM].size, &error_fatal); 507 memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, 508 mask_rom); 509 510 riscv_find_and_load_firmware(machine, BIOS_FILENAME, 511 memmap[VIRT_DRAM].base, NULL); 512 513 if (machine->kernel_filename) { 514 kernel_entry = riscv_load_kernel(machine->kernel_filename, NULL); 515 516 if (machine->initrd_filename) { 517 hwaddr start; 518 hwaddr end = riscv_load_initrd(machine->initrd_filename, 519 machine->ram_size, kernel_entry, 520 &start); 521 qemu_fdt_setprop_cell(s->fdt, "/chosen", 522 "linux,initrd-start", start); 523 qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end", 524 end); 525 } 526 } else { 527 /* 528 * If dynamic firmware is used, it doesn't know where is the next mode 529 * if kernel argument is not set. 530 */ 531 kernel_entry = 0; 532 } 533 534 if (drive_get(IF_PFLASH, 0, 0)) { 535 /* 536 * Pflash was supplied, let's overwrite the address we jump to after 537 * reset to the base of the flash. 538 */ 539 start_addr = virt_memmap[VIRT_FLASH].base; 540 } 541 542 /* Compute the fdt load address in dram */ 543 fdt_load_addr = riscv_load_fdt(memmap[VIRT_DRAM].base, 544 machine->ram_size, s->fdt); 545 /* load the reset vector */ 546 riscv_setup_rom_reset_vec(start_addr, virt_memmap[VIRT_MROM].base, 547 virt_memmap[VIRT_MROM].size, kernel_entry, 548 fdt_load_addr, s->fdt); 549 550 /* create PLIC hart topology configuration string */ 551 plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus; 552 plic_hart_config = g_malloc0(plic_hart_config_len); 553 for (i = 0; i < smp_cpus; i++) { 554 if (i != 0) { 555 strncat(plic_hart_config, ",", plic_hart_config_len); 556 } 557 strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG, plic_hart_config_len); 558 plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1); 559 } 560 561 /* MMIO */ 562 s->plic = sifive_plic_create(memmap[VIRT_PLIC].base, 563 plic_hart_config, 564 VIRT_PLIC_NUM_SOURCES, 565 VIRT_PLIC_NUM_PRIORITIES, 566 VIRT_PLIC_PRIORITY_BASE, 567 VIRT_PLIC_PENDING_BASE, 568 VIRT_PLIC_ENABLE_BASE, 569 VIRT_PLIC_ENABLE_STRIDE, 570 VIRT_PLIC_CONTEXT_BASE, 571 VIRT_PLIC_CONTEXT_STRIDE, 572 memmap[VIRT_PLIC].size); 573 sifive_clint_create(memmap[VIRT_CLINT].base, 574 memmap[VIRT_CLINT].size, smp_cpus, 575 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, true); 576 sifive_test_create(memmap[VIRT_TEST].base); 577 578 for (i = 0; i < VIRTIO_COUNT; i++) { 579 sysbus_create_simple("virtio-mmio", 580 memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 581 qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); 582 } 583 584 gpex_pcie_init(system_memory, 585 memmap[VIRT_PCIE_ECAM].base, 586 memmap[VIRT_PCIE_ECAM].size, 587 memmap[VIRT_PCIE_MMIO].base, 588 memmap[VIRT_PCIE_MMIO].size, 589 memmap[VIRT_PCIE_PIO].base, 590 DEVICE(s->plic), true); 591 592 serial_mm_init(system_memory, memmap[VIRT_UART0].base, 593 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, 594 serial_hd(0), DEVICE_LITTLE_ENDIAN); 595 596 sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base, 597 qdev_get_gpio_in(DEVICE(s->plic), RTC_IRQ)); 598 599 virt_flash_create(s); 600 601 for (i = 0; i < ARRAY_SIZE(s->flash); i++) { 602 /* Map legacy -drive if=pflash to machine properties */ 603 pflash_cfi01_legacy_drive(s->flash[i], 604 drive_get(IF_PFLASH, 0, i)); 605 } 606 virt_flash_map(s, system_memory); 607 608 g_free(plic_hart_config); 609 } 610 611 static void virt_machine_instance_init(Object *obj) 612 { 613 } 614 615 static void virt_machine_class_init(ObjectClass *oc, void *data) 616 { 617 MachineClass *mc = MACHINE_CLASS(oc); 618 619 mc->desc = "RISC-V VirtIO board"; 620 mc->init = virt_machine_init; 621 mc->max_cpus = 8; 622 mc->default_cpu_type = VIRT_CPU; 623 mc->pci_allow_0_address = true; 624 } 625 626 static const TypeInfo virt_machine_typeinfo = { 627 .name = MACHINE_TYPE_NAME("virt"), 628 .parent = TYPE_MACHINE, 629 .class_init = virt_machine_class_init, 630 .instance_init = virt_machine_instance_init, 631 .instance_size = sizeof(RISCVVirtState), 632 }; 633 634 static void virt_machine_init_register_types(void) 635 { 636 type_register_static(&virt_machine_typeinfo); 637 } 638 639 type_init(virt_machine_init_register_types) 640