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_RTC] = { 0x101000, 0x1000 }, 62 [VIRT_CLINT] = { 0x2000000, 0x10000 }, 63 [VIRT_PLIC] = { 0xc000000, 0x4000000 }, 64 [VIRT_UART0] = { 0x10000000, 0x100 }, 65 [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, 66 [VIRT_FLASH] = { 0x20000000, 0x4000000 }, 67 [VIRT_DRAM] = { 0x80000000, 0x0 }, 68 [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, 69 [VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 }, 70 [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, 71 }; 72 73 #define VIRT_FLASH_SECTOR_SIZE (256 * KiB) 74 75 static PFlashCFI01 *virt_flash_create1(RISCVVirtState *s, 76 const char *name, 77 const char *alias_prop_name) 78 { 79 /* 80 * Create a single flash device. We use the same parameters as 81 * the flash devices on the ARM virt board. 82 */ 83 DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01); 84 85 qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE); 86 qdev_prop_set_uint8(dev, "width", 4); 87 qdev_prop_set_uint8(dev, "device-width", 2); 88 qdev_prop_set_bit(dev, "big-endian", false); 89 qdev_prop_set_uint16(dev, "id0", 0x89); 90 qdev_prop_set_uint16(dev, "id1", 0x18); 91 qdev_prop_set_uint16(dev, "id2", 0x00); 92 qdev_prop_set_uint16(dev, "id3", 0x00); 93 qdev_prop_set_string(dev, "name", name); 94 95 object_property_add_child(OBJECT(s), name, OBJECT(dev)); 96 object_property_add_alias(OBJECT(s), alias_prop_name, 97 OBJECT(dev), "drive"); 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(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE)); 115 assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX); 116 qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE); 117 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 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, i; 186 uint32_t *cells; 187 char *nodename; 188 uint32_t plic_phandle, test_phandle, phandle = 1; 189 hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2; 190 hwaddr flashbase = virt_memmap[VIRT_FLASH].base; 191 192 fdt = s->fdt = create_device_tree(&s->fdt_size); 193 if (!fdt) { 194 error_report("create_device_tree() failed"); 195 exit(1); 196 } 197 198 qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); 199 qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); 200 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); 201 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); 202 203 qemu_fdt_add_subnode(fdt, "/soc"); 204 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); 205 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); 206 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); 207 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); 208 209 nodename = g_strdup_printf("/memory@%lx", 210 (long)memmap[VIRT_DRAM].base); 211 qemu_fdt_add_subnode(fdt, nodename); 212 qemu_fdt_setprop_cells(fdt, nodename, "reg", 213 memmap[VIRT_DRAM].base >> 32, memmap[VIRT_DRAM].base, 214 mem_size >> 32, mem_size); 215 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); 216 g_free(nodename); 217 218 qemu_fdt_add_subnode(fdt, "/cpus"); 219 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 220 SIFIVE_CLINT_TIMEBASE_FREQ); 221 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); 222 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); 223 224 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 225 int cpu_phandle = phandle++; 226 int intc_phandle; 227 nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 228 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 229 char *isa = riscv_isa_string(&s->soc.harts[cpu]); 230 qemu_fdt_add_subnode(fdt, nodename); 231 #if defined(TARGET_RISCV32) 232 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32"); 233 #else 234 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); 235 #endif 236 qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa); 237 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv"); 238 qemu_fdt_setprop_string(fdt, nodename, "status", "okay"); 239 qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu); 240 qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu"); 241 qemu_fdt_setprop_cell(fdt, nodename, "phandle", cpu_phandle); 242 intc_phandle = phandle++; 243 qemu_fdt_add_subnode(fdt, intc); 244 qemu_fdt_setprop_cell(fdt, intc, "phandle", intc_phandle); 245 qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc"); 246 qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0); 247 qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1); 248 g_free(isa); 249 g_free(intc); 250 g_free(nodename); 251 } 252 253 /* Add cpu-topology node */ 254 qemu_fdt_add_subnode(fdt, "/cpus/cpu-map"); 255 qemu_fdt_add_subnode(fdt, "/cpus/cpu-map/cluster0"); 256 for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { 257 char *core_nodename = g_strdup_printf("/cpus/cpu-map/cluster0/core%d", 258 cpu); 259 char *cpu_nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 260 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, cpu_nodename); 261 qemu_fdt_add_subnode(fdt, core_nodename); 262 qemu_fdt_setprop_cell(fdt, core_nodename, "cpu", intc_phandle); 263 g_free(core_nodename); 264 g_free(cpu_nodename); 265 } 266 267 cells = g_new0(uint32_t, s->soc.num_harts * 4); 268 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 269 nodename = 270 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 271 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 272 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 273 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); 274 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 275 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); 276 g_free(nodename); 277 } 278 nodename = g_strdup_printf("/soc/clint@%lx", 279 (long)memmap[VIRT_CLINT].base); 280 qemu_fdt_add_subnode(fdt, nodename); 281 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0"); 282 qemu_fdt_setprop_cells(fdt, nodename, "reg", 283 0x0, memmap[VIRT_CLINT].base, 284 0x0, memmap[VIRT_CLINT].size); 285 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 286 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 287 g_free(cells); 288 g_free(nodename); 289 290 plic_phandle = phandle++; 291 cells = g_new0(uint32_t, s->soc.num_harts * 4); 292 for (cpu = 0; cpu < s->soc.num_harts; cpu++) { 293 nodename = 294 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); 295 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); 296 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); 297 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); 298 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); 299 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); 300 g_free(nodename); 301 } 302 nodename = g_strdup_printf("/soc/interrupt-controller@%lx", 303 (long)memmap[VIRT_PLIC].base); 304 qemu_fdt_add_subnode(fdt, nodename); 305 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 306 FDT_PLIC_ADDR_CELLS); 307 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 308 FDT_PLIC_INT_CELLS); 309 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); 310 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); 311 qemu_fdt_setprop(fdt, nodename, "interrupts-extended", 312 cells, s->soc.num_harts * sizeof(uint32_t) * 4); 313 qemu_fdt_setprop_cells(fdt, nodename, "reg", 314 0x0, memmap[VIRT_PLIC].base, 315 0x0, memmap[VIRT_PLIC].size); 316 qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", VIRTIO_NDEV); 317 qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle); 318 plic_phandle = qemu_fdt_get_phandle(fdt, nodename); 319 g_free(cells); 320 g_free(nodename); 321 322 for (i = 0; i < VIRTIO_COUNT; i++) { 323 nodename = g_strdup_printf("/virtio_mmio@%lx", 324 (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size)); 325 qemu_fdt_add_subnode(fdt, nodename); 326 qemu_fdt_setprop_string(fdt, nodename, "compatible", "virtio,mmio"); 327 qemu_fdt_setprop_cells(fdt, nodename, "reg", 328 0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 329 0x0, memmap[VIRT_VIRTIO].size); 330 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 331 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", VIRTIO_IRQ + i); 332 g_free(nodename); 333 } 334 335 nodename = g_strdup_printf("/soc/pci@%lx", 336 (long) memmap[VIRT_PCIE_ECAM].base); 337 qemu_fdt_add_subnode(fdt, nodename); 338 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 339 FDT_PCI_ADDR_CELLS); 340 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 341 FDT_PCI_INT_CELLS); 342 qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0x2); 343 qemu_fdt_setprop_string(fdt, nodename, "compatible", 344 "pci-host-ecam-generic"); 345 qemu_fdt_setprop_string(fdt, nodename, "device_type", "pci"); 346 qemu_fdt_setprop_cell(fdt, nodename, "linux,pci-domain", 0); 347 qemu_fdt_setprop_cells(fdt, nodename, "bus-range", 0, 348 memmap[VIRT_PCIE_ECAM].size / 349 PCIE_MMCFG_SIZE_MIN - 1); 350 qemu_fdt_setprop(fdt, nodename, "dma-coherent", NULL, 0); 351 qemu_fdt_setprop_cells(fdt, nodename, "reg", 0, memmap[VIRT_PCIE_ECAM].base, 352 0, memmap[VIRT_PCIE_ECAM].size); 353 qemu_fdt_setprop_sized_cells(fdt, nodename, "ranges", 354 1, FDT_PCI_RANGE_IOPORT, 2, 0, 355 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, 356 1, FDT_PCI_RANGE_MMIO, 357 2, memmap[VIRT_PCIE_MMIO].base, 358 2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size); 359 create_pcie_irq_map(fdt, nodename, plic_phandle); 360 g_free(nodename); 361 362 test_phandle = phandle++; 363 nodename = g_strdup_printf("/test@%lx", 364 (long)memmap[VIRT_TEST].base); 365 qemu_fdt_add_subnode(fdt, nodename); 366 { 367 const char compat[] = "sifive,test1\0sifive,test0\0syscon"; 368 qemu_fdt_setprop(fdt, nodename, "compatible", compat, sizeof(compat)); 369 } 370 qemu_fdt_setprop_cells(fdt, nodename, "reg", 371 0x0, memmap[VIRT_TEST].base, 372 0x0, memmap[VIRT_TEST].size); 373 qemu_fdt_setprop_cell(fdt, nodename, "phandle", test_phandle); 374 test_phandle = qemu_fdt_get_phandle(fdt, nodename); 375 g_free(nodename); 376 377 nodename = g_strdup_printf("/reboot"); 378 qemu_fdt_add_subnode(fdt, nodename); 379 qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-reboot"); 380 qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); 381 qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); 382 qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_RESET); 383 g_free(nodename); 384 385 nodename = g_strdup_printf("/poweroff"); 386 qemu_fdt_add_subnode(fdt, nodename); 387 qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-poweroff"); 388 qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); 389 qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); 390 qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_PASS); 391 g_free(nodename); 392 393 nodename = g_strdup_printf("/uart@%lx", 394 (long)memmap[VIRT_UART0].base); 395 qemu_fdt_add_subnode(fdt, nodename); 396 qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); 397 qemu_fdt_setprop_cells(fdt, nodename, "reg", 398 0x0, memmap[VIRT_UART0].base, 399 0x0, memmap[VIRT_UART0].size); 400 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 3686400); 401 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 402 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", UART0_IRQ); 403 404 qemu_fdt_add_subnode(fdt, "/chosen"); 405 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); 406 if (cmdline) { 407 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); 408 } 409 g_free(nodename); 410 411 nodename = g_strdup_printf("/rtc@%lx", 412 (long)memmap[VIRT_RTC].base); 413 qemu_fdt_add_subnode(fdt, nodename); 414 qemu_fdt_setprop_string(fdt, nodename, "compatible", 415 "google,goldfish-rtc"); 416 qemu_fdt_setprop_cells(fdt, nodename, "reg", 417 0x0, memmap[VIRT_RTC].base, 418 0x0, memmap[VIRT_RTC].size); 419 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle); 420 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", RTC_IRQ); 421 g_free(nodename); 422 423 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase); 424 qemu_fdt_add_subnode(s->fdt, nodename); 425 qemu_fdt_setprop_string(s->fdt, nodename, "compatible", "cfi-flash"); 426 qemu_fdt_setprop_sized_cells(s->fdt, nodename, "reg", 427 2, flashbase, 2, flashsize, 428 2, flashbase + flashsize, 2, flashsize); 429 qemu_fdt_setprop_cell(s->fdt, nodename, "bank-width", 4); 430 g_free(nodename); 431 } 432 433 434 static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, 435 hwaddr ecam_base, hwaddr ecam_size, 436 hwaddr mmio_base, hwaddr mmio_size, 437 hwaddr pio_base, 438 DeviceState *plic, bool link_up) 439 { 440 DeviceState *dev; 441 MemoryRegion *ecam_alias, *ecam_reg; 442 MemoryRegion *mmio_alias, *mmio_reg; 443 qemu_irq irq; 444 int i; 445 446 dev = qdev_new(TYPE_GPEX_HOST); 447 448 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 449 450 ecam_alias = g_new0(MemoryRegion, 1); 451 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 452 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 453 ecam_reg, 0, ecam_size); 454 memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); 455 456 mmio_alias = g_new0(MemoryRegion, 1); 457 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 458 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", 459 mmio_reg, mmio_base, mmio_size); 460 memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); 461 462 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); 463 464 for (i = 0; i < GPEX_NUM_IRQS; i++) { 465 irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); 466 467 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); 468 gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); 469 } 470 471 return dev; 472 } 473 474 static void virt_machine_init(MachineState *machine) 475 { 476 const struct MemmapEntry *memmap = virt_memmap; 477 RISCVVirtState *s = RISCV_VIRT_MACHINE(machine); 478 MemoryRegion *system_memory = get_system_memory(); 479 MemoryRegion *main_mem = g_new(MemoryRegion, 1); 480 MemoryRegion *mask_rom = g_new(MemoryRegion, 1); 481 char *plic_hart_config; 482 size_t plic_hart_config_len; 483 target_ulong start_addr = memmap[VIRT_DRAM].base; 484 int i; 485 unsigned int smp_cpus = machine->smp.cpus; 486 487 /* Initialize SOC */ 488 object_initialize_child(OBJECT(machine), "soc", &s->soc, 489 TYPE_RISCV_HART_ARRAY); 490 object_property_set_str(OBJECT(&s->soc), "cpu-type", machine->cpu_type, 491 &error_abort); 492 object_property_set_int(OBJECT(&s->soc), "num-harts", smp_cpus, 493 &error_abort); 494 sysbus_realize(SYS_BUS_DEVICE(&s->soc), &error_abort); 495 496 /* register system main memory (actual RAM) */ 497 memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram", 498 machine->ram_size, &error_fatal); 499 memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base, 500 main_mem); 501 502 /* create device tree */ 503 create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); 504 505 /* boot rom */ 506 memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom", 507 memmap[VIRT_MROM].size, &error_fatal); 508 memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, 509 mask_rom); 510 511 riscv_find_and_load_firmware(machine, BIOS_FILENAME, 512 memmap[VIRT_DRAM].base, NULL); 513 514 if (machine->kernel_filename) { 515 uint64_t kernel_entry = riscv_load_kernel(machine->kernel_filename, 516 NULL); 517 518 if (machine->initrd_filename) { 519 hwaddr start; 520 hwaddr end = riscv_load_initrd(machine->initrd_filename, 521 machine->ram_size, kernel_entry, 522 &start); 523 qemu_fdt_setprop_cell(s->fdt, "/chosen", 524 "linux,initrd-start", start); 525 qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end", 526 end); 527 } 528 } 529 530 if (drive_get(IF_PFLASH, 0, 0)) { 531 /* 532 * Pflash was supplied, let's overwrite the address we jump to after 533 * reset to the base of the flash. 534 */ 535 start_addr = virt_memmap[VIRT_FLASH].base; 536 } 537 538 /* reset vector */ 539 uint32_t reset_vec[8] = { 540 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */ 541 0x02028593, /* addi a1, t0, %pcrel_lo(1b) */ 542 0xf1402573, /* csrr a0, mhartid */ 543 #if defined(TARGET_RISCV32) 544 0x0182a283, /* lw t0, 24(t0) */ 545 #elif defined(TARGET_RISCV64) 546 0x0182b283, /* ld t0, 24(t0) */ 547 #endif 548 0x00028067, /* jr t0 */ 549 0x00000000, 550 start_addr, /* start: .dword */ 551 0x00000000, 552 /* dtb: */ 553 }; 554 555 /* copy in the reset vector in little_endian byte order */ 556 for (i = 0; i < sizeof(reset_vec) >> 2; i++) { 557 reset_vec[i] = cpu_to_le32(reset_vec[i]); 558 } 559 rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), 560 memmap[VIRT_MROM].base, &address_space_memory); 561 562 /* copy in the device tree */ 563 if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > 564 memmap[VIRT_MROM].size - sizeof(reset_vec)) { 565 error_report("not enough space to store device-tree"); 566 exit(1); 567 } 568 qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); 569 rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), 570 memmap[VIRT_MROM].base + sizeof(reset_vec), 571 &address_space_memory); 572 573 /* create PLIC hart topology configuration string */ 574 plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus; 575 plic_hart_config = g_malloc0(plic_hart_config_len); 576 for (i = 0; i < smp_cpus; i++) { 577 if (i != 0) { 578 strncat(plic_hart_config, ",", plic_hart_config_len); 579 } 580 strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG, plic_hart_config_len); 581 plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1); 582 } 583 584 /* MMIO */ 585 s->plic = sifive_plic_create(memmap[VIRT_PLIC].base, 586 plic_hart_config, 587 VIRT_PLIC_NUM_SOURCES, 588 VIRT_PLIC_NUM_PRIORITIES, 589 VIRT_PLIC_PRIORITY_BASE, 590 VIRT_PLIC_PENDING_BASE, 591 VIRT_PLIC_ENABLE_BASE, 592 VIRT_PLIC_ENABLE_STRIDE, 593 VIRT_PLIC_CONTEXT_BASE, 594 VIRT_PLIC_CONTEXT_STRIDE, 595 memmap[VIRT_PLIC].size); 596 sifive_clint_create(memmap[VIRT_CLINT].base, 597 memmap[VIRT_CLINT].size, smp_cpus, 598 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, true); 599 sifive_test_create(memmap[VIRT_TEST].base); 600 601 for (i = 0; i < VIRTIO_COUNT; i++) { 602 sysbus_create_simple("virtio-mmio", 603 memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, 604 qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); 605 } 606 607 gpex_pcie_init(system_memory, 608 memmap[VIRT_PCIE_ECAM].base, 609 memmap[VIRT_PCIE_ECAM].size, 610 memmap[VIRT_PCIE_MMIO].base, 611 memmap[VIRT_PCIE_MMIO].size, 612 memmap[VIRT_PCIE_PIO].base, 613 DEVICE(s->plic), true); 614 615 serial_mm_init(system_memory, memmap[VIRT_UART0].base, 616 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, 617 serial_hd(0), DEVICE_LITTLE_ENDIAN); 618 619 sysbus_create_simple("goldfish_rtc", memmap[VIRT_RTC].base, 620 qdev_get_gpio_in(DEVICE(s->plic), RTC_IRQ)); 621 622 virt_flash_create(s); 623 624 for (i = 0; i < ARRAY_SIZE(s->flash); i++) { 625 /* Map legacy -drive if=pflash to machine properties */ 626 pflash_cfi01_legacy_drive(s->flash[i], 627 drive_get(IF_PFLASH, 0, i)); 628 } 629 virt_flash_map(s, system_memory); 630 631 g_free(plic_hart_config); 632 } 633 634 static void virt_machine_instance_init(Object *obj) 635 { 636 } 637 638 static void virt_machine_class_init(ObjectClass *oc, void *data) 639 { 640 MachineClass *mc = MACHINE_CLASS(oc); 641 642 mc->desc = "RISC-V VirtIO board"; 643 mc->init = virt_machine_init; 644 mc->max_cpus = 8; 645 mc->default_cpu_type = VIRT_CPU; 646 mc->pci_allow_0_address = true; 647 } 648 649 static const TypeInfo virt_machine_typeinfo = { 650 .name = MACHINE_TYPE_NAME("virt"), 651 .parent = TYPE_MACHINE, 652 .class_init = virt_machine_class_init, 653 .instance_init = virt_machine_instance_init, 654 .instance_size = sizeof(RISCVVirtState), 655 }; 656 657 static void virt_machine_init_register_types(void) 658 { 659 type_register_static(&virt_machine_typeinfo); 660 } 661 662 type_init(virt_machine_init_register_types) 663