qemu/hw/riscv/sifive_u.c
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   1/*
   2 * QEMU RISC-V Board Compatible with SiFive Freedom U SDK
   3 *
   4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
   5 * Copyright (c) 2017 SiFive, Inc.
   6 * Copyright (c) 2019 Bin Meng <bmeng.cn@gmail.com>
   7 *
   8 * Provides a board compatible with the SiFive Freedom U SDK:
   9 *
  10 * 0) UART
  11 * 1) CLINT (Core Level Interruptor)
  12 * 2) PLIC (Platform Level Interrupt Controller)
  13 * 3) PRCI (Power, Reset, Clock, Interrupt)
  14 * 4) GPIO (General Purpose Input/Output Controller)
  15 * 5) OTP (One-Time Programmable) memory with stored serial number
  16 * 6) GEM (Gigabit Ethernet Controller) and management block
  17 * 7) DMA (Direct Memory Access Controller)
  18 * 8) SPI0 connected to an SPI flash
  19 * 9) SPI2 connected to an SD card
  20 * 10) PWM0 and PWM1
  21 *
  22 * This board currently generates devicetree dynamically that indicates at least
  23 * two harts and up to five harts.
  24 *
  25 * This program is free software; you can redistribute it and/or modify it
  26 * under the terms and conditions of the GNU General Public License,
  27 * version 2 or later, as published by the Free Software Foundation.
  28 *
  29 * This program is distributed in the hope it will be useful, but WITHOUT
  30 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  31 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  32 * more details.
  33 *
  34 * You should have received a copy of the GNU General Public License along with
  35 * this program.  If not, see <http://www.gnu.org/licenses/>.
  36 */
  37
  38#include "qemu/osdep.h"
  39#include "qemu/error-report.h"
  40#include "qapi/error.h"
  41#include "qapi/visitor.h"
  42#include "hw/boards.h"
  43#include "hw/irq.h"
  44#include "hw/loader.h"
  45#include "hw/sysbus.h"
  46#include "hw/char/serial.h"
  47#include "hw/cpu/cluster.h"
  48#include "hw/misc/unimp.h"
  49#include "hw/sd/sd.h"
  50#include "hw/ssi/ssi.h"
  51#include "target/riscv/cpu.h"
  52#include "hw/riscv/riscv_hart.h"
  53#include "hw/riscv/sifive_u.h"
  54#include "hw/riscv/boot.h"
  55#include "hw/char/sifive_uart.h"
  56#include "hw/intc/riscv_aclint.h"
  57#include "hw/intc/sifive_plic.h"
  58#include "chardev/char.h"
  59#include "net/eth.h"
  60#include "sysemu/device_tree.h"
  61#include "sysemu/runstate.h"
  62#include "sysemu/sysemu.h"
  63
  64#include <libfdt.h>
  65
  66/* CLINT timebase frequency */
  67#define CLINT_TIMEBASE_FREQ 1000000
  68
  69static const MemMapEntry sifive_u_memmap[] = {
  70    [SIFIVE_U_DEV_DEBUG] =    {        0x0,      0x100 },
  71    [SIFIVE_U_DEV_MROM] =     {     0x1000,     0xf000 },
  72    [SIFIVE_U_DEV_CLINT] =    {  0x2000000,    0x10000 },
  73    [SIFIVE_U_DEV_L2CC] =     {  0x2010000,     0x1000 },
  74    [SIFIVE_U_DEV_PDMA] =     {  0x3000000,   0x100000 },
  75    [SIFIVE_U_DEV_L2LIM] =    {  0x8000000,  0x2000000 },
  76    [SIFIVE_U_DEV_PLIC] =     {  0xc000000,  0x4000000 },
  77    [SIFIVE_U_DEV_PRCI] =     { 0x10000000,     0x1000 },
  78    [SIFIVE_U_DEV_UART0] =    { 0x10010000,     0x1000 },
  79    [SIFIVE_U_DEV_UART1] =    { 0x10011000,     0x1000 },
  80    [SIFIVE_U_DEV_PWM0] =     { 0x10020000,     0x1000 },
  81    [SIFIVE_U_DEV_PWM1] =     { 0x10021000,     0x1000 },
  82    [SIFIVE_U_DEV_QSPI0] =    { 0x10040000,     0x1000 },
  83    [SIFIVE_U_DEV_QSPI2] =    { 0x10050000,     0x1000 },
  84    [SIFIVE_U_DEV_GPIO] =     { 0x10060000,     0x1000 },
  85    [SIFIVE_U_DEV_OTP] =      { 0x10070000,     0x1000 },
  86    [SIFIVE_U_DEV_GEM] =      { 0x10090000,     0x2000 },
  87    [SIFIVE_U_DEV_GEM_MGMT] = { 0x100a0000,     0x1000 },
  88    [SIFIVE_U_DEV_DMC] =      { 0x100b0000,    0x10000 },
  89    [SIFIVE_U_DEV_FLASH0] =   { 0x20000000, 0x10000000 },
  90    [SIFIVE_U_DEV_DRAM] =     { 0x80000000,        0x0 },
  91};
  92
  93#define OTP_SERIAL          1
  94#define GEM_REVISION        0x10070109
  95
  96static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap,
  97                       uint64_t mem_size, const char *cmdline, bool is_32_bit)
  98{
  99    MachineState *ms = MACHINE(qdev_get_machine());
 100    void *fdt;
 101    int cpu;
 102    uint32_t *cells;
 103    char *nodename;
 104    uint32_t plic_phandle, prci_phandle, gpio_phandle, phandle = 1;
 105    uint32_t hfclk_phandle, rtcclk_phandle, phy_phandle;
 106    static const char * const ethclk_names[2] = { "pclk", "hclk" };
 107    static const char * const clint_compat[2] = {
 108        "sifive,clint0", "riscv,clint0"
 109    };
 110    static const char * const plic_compat[2] = {
 111        "sifive,plic-1.0.0", "riscv,plic0"
 112    };
 113
 114    if (ms->dtb) {
 115        fdt = s->fdt = load_device_tree(ms->dtb, &s->fdt_size);
 116        if (!fdt) {
 117            error_report("load_device_tree() failed");
 118            exit(1);
 119        }
 120        goto update_bootargs;
 121    } else {
 122        fdt = s->fdt = create_device_tree(&s->fdt_size);
 123        if (!fdt) {
 124            error_report("create_device_tree() failed");
 125            exit(1);
 126        }
 127    }
 128
 129    qemu_fdt_setprop_string(fdt, "/", "model", "SiFive HiFive Unleashed A00");
 130    qemu_fdt_setprop_string(fdt, "/", "compatible",
 131                            "sifive,hifive-unleashed-a00");
 132    qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
 133    qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
 134
 135    qemu_fdt_add_subnode(fdt, "/soc");
 136    qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
 137    qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus");
 138    qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
 139    qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
 140
 141    hfclk_phandle = phandle++;
 142    nodename = g_strdup_printf("/hfclk");
 143    qemu_fdt_add_subnode(fdt, nodename);
 144    qemu_fdt_setprop_cell(fdt, nodename, "phandle", hfclk_phandle);
 145    qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "hfclk");
 146    qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
 147        SIFIVE_U_HFCLK_FREQ);
 148    qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
 149    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
 150    g_free(nodename);
 151
 152    rtcclk_phandle = phandle++;
 153    nodename = g_strdup_printf("/rtcclk");
 154    qemu_fdt_add_subnode(fdt, nodename);
 155    qemu_fdt_setprop_cell(fdt, nodename, "phandle", rtcclk_phandle);
 156    qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "rtcclk");
 157    qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
 158        SIFIVE_U_RTCCLK_FREQ);
 159    qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
 160    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
 161    g_free(nodename);
 162
 163    nodename = g_strdup_printf("/memory@%lx",
 164        (long)memmap[SIFIVE_U_DEV_DRAM].base);
 165    qemu_fdt_add_subnode(fdt, nodename);
 166    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 167        memmap[SIFIVE_U_DEV_DRAM].base >> 32, memmap[SIFIVE_U_DEV_DRAM].base,
 168        mem_size >> 32, mem_size);
 169    qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
 170    g_free(nodename);
 171
 172    qemu_fdt_add_subnode(fdt, "/cpus");
 173    qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
 174        CLINT_TIMEBASE_FREQ);
 175    qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
 176    qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
 177
 178    for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) {
 179        int cpu_phandle = phandle++;
 180        nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
 181        char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
 182        char *isa;
 183        qemu_fdt_add_subnode(fdt, nodename);
 184        /* cpu 0 is the management hart that does not have mmu */
 185        if (cpu != 0) {
 186            if (is_32_bit) {
 187                qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32");
 188            } else {
 189                qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
 190            }
 191            isa = riscv_isa_string(&s->soc.u_cpus.harts[cpu - 1]);
 192        } else {
 193            isa = riscv_isa_string(&s->soc.e_cpus.harts[0]);
 194        }
 195        qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
 196        qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
 197        qemu_fdt_setprop_string(fdt, nodename, "status", "okay");
 198        qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu);
 199        qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu");
 200        qemu_fdt_add_subnode(fdt, intc);
 201        qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle);
 202        qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc");
 203        qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0);
 204        qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1);
 205        g_free(isa);
 206        g_free(intc);
 207        g_free(nodename);
 208    }
 209
 210    cells =  g_new0(uint32_t, ms->smp.cpus * 4);
 211    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
 212        nodename =
 213            g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
 214        uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
 215        cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
 216        cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
 217        cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
 218        cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
 219        g_free(nodename);
 220    }
 221    nodename = g_strdup_printf("/soc/clint@%lx",
 222        (long)memmap[SIFIVE_U_DEV_CLINT].base);
 223    qemu_fdt_add_subnode(fdt, nodename);
 224    qemu_fdt_setprop_string_array(fdt, nodename, "compatible",
 225        (char **)&clint_compat, ARRAY_SIZE(clint_compat));
 226    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 227        0x0, memmap[SIFIVE_U_DEV_CLINT].base,
 228        0x0, memmap[SIFIVE_U_DEV_CLINT].size);
 229    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
 230        cells, ms->smp.cpus * sizeof(uint32_t) * 4);
 231    g_free(cells);
 232    g_free(nodename);
 233
 234    nodename = g_strdup_printf("/soc/otp@%lx",
 235        (long)memmap[SIFIVE_U_DEV_OTP].base);
 236    qemu_fdt_add_subnode(fdt, nodename);
 237    qemu_fdt_setprop_cell(fdt, nodename, "fuse-count", SIFIVE_U_OTP_REG_SIZE);
 238    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 239        0x0, memmap[SIFIVE_U_DEV_OTP].base,
 240        0x0, memmap[SIFIVE_U_DEV_OTP].size);
 241    qemu_fdt_setprop_string(fdt, nodename, "compatible",
 242        "sifive,fu540-c000-otp");
 243    g_free(nodename);
 244
 245    prci_phandle = phandle++;
 246    nodename = g_strdup_printf("/soc/clock-controller@%lx",
 247        (long)memmap[SIFIVE_U_DEV_PRCI].base);
 248    qemu_fdt_add_subnode(fdt, nodename);
 249    qemu_fdt_setprop_cell(fdt, nodename, "phandle", prci_phandle);
 250    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x1);
 251    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 252        hfclk_phandle, rtcclk_phandle);
 253    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 254        0x0, memmap[SIFIVE_U_DEV_PRCI].base,
 255        0x0, memmap[SIFIVE_U_DEV_PRCI].size);
 256    qemu_fdt_setprop_string(fdt, nodename, "compatible",
 257        "sifive,fu540-c000-prci");
 258    g_free(nodename);
 259
 260    plic_phandle = phandle++;
 261    cells =  g_new0(uint32_t, ms->smp.cpus * 4 - 2);
 262    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
 263        nodename =
 264            g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
 265        uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
 266        /* cpu 0 is the management hart that does not have S-mode */
 267        if (cpu == 0) {
 268            cells[0] = cpu_to_be32(intc_phandle);
 269            cells[1] = cpu_to_be32(IRQ_M_EXT);
 270        } else {
 271            cells[cpu * 4 - 2] = cpu_to_be32(intc_phandle);
 272            cells[cpu * 4 - 1] = cpu_to_be32(IRQ_M_EXT);
 273            cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
 274            cells[cpu * 4 + 1] = cpu_to_be32(IRQ_S_EXT);
 275        }
 276        g_free(nodename);
 277    }
 278    nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
 279        (long)memmap[SIFIVE_U_DEV_PLIC].base);
 280    qemu_fdt_add_subnode(fdt, nodename);
 281    qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
 282    qemu_fdt_setprop_string_array(fdt, nodename, "compatible",
 283        (char **)&plic_compat, ARRAY_SIZE(plic_compat));
 284    qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
 285    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
 286        cells, (ms->smp.cpus * 4 - 2) * sizeof(uint32_t));
 287    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 288        0x0, memmap[SIFIVE_U_DEV_PLIC].base,
 289        0x0, memmap[SIFIVE_U_DEV_PLIC].size);
 290    qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 0x35);
 291    qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle);
 292    plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
 293    g_free(cells);
 294    g_free(nodename);
 295
 296    gpio_phandle = phandle++;
 297    nodename = g_strdup_printf("/soc/gpio@%lx",
 298        (long)memmap[SIFIVE_U_DEV_GPIO].base);
 299    qemu_fdt_add_subnode(fdt, nodename);
 300    qemu_fdt_setprop_cell(fdt, nodename, "phandle", gpio_phandle);
 301    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 302        prci_phandle, PRCI_CLK_TLCLK);
 303    qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 2);
 304    qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
 305    qemu_fdt_setprop_cell(fdt, nodename, "#gpio-cells", 2);
 306    qemu_fdt_setprop(fdt, nodename, "gpio-controller", NULL, 0);
 307    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 308        0x0, memmap[SIFIVE_U_DEV_GPIO].base,
 309        0x0, memmap[SIFIVE_U_DEV_GPIO].size);
 310    qemu_fdt_setprop_cells(fdt, nodename, "interrupts", SIFIVE_U_GPIO_IRQ0,
 311        SIFIVE_U_GPIO_IRQ1, SIFIVE_U_GPIO_IRQ2, SIFIVE_U_GPIO_IRQ3,
 312        SIFIVE_U_GPIO_IRQ4, SIFIVE_U_GPIO_IRQ5, SIFIVE_U_GPIO_IRQ6,
 313        SIFIVE_U_GPIO_IRQ7, SIFIVE_U_GPIO_IRQ8, SIFIVE_U_GPIO_IRQ9,
 314        SIFIVE_U_GPIO_IRQ10, SIFIVE_U_GPIO_IRQ11, SIFIVE_U_GPIO_IRQ12,
 315        SIFIVE_U_GPIO_IRQ13, SIFIVE_U_GPIO_IRQ14, SIFIVE_U_GPIO_IRQ15);
 316    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 317    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,gpio0");
 318    g_free(nodename);
 319
 320    nodename = g_strdup_printf("/gpio-restart");
 321    qemu_fdt_add_subnode(fdt, nodename);
 322    qemu_fdt_setprop_cells(fdt, nodename, "gpios", gpio_phandle, 10, 1);
 323    qemu_fdt_setprop_string(fdt, nodename, "compatible", "gpio-restart");
 324    g_free(nodename);
 325
 326    nodename = g_strdup_printf("/soc/dma@%lx",
 327        (long)memmap[SIFIVE_U_DEV_PDMA].base);
 328    qemu_fdt_add_subnode(fdt, nodename);
 329    qemu_fdt_setprop_cell(fdt, nodename, "#dma-cells", 1);
 330    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
 331        SIFIVE_U_PDMA_IRQ0, SIFIVE_U_PDMA_IRQ1, SIFIVE_U_PDMA_IRQ2,
 332        SIFIVE_U_PDMA_IRQ3, SIFIVE_U_PDMA_IRQ4, SIFIVE_U_PDMA_IRQ5,
 333        SIFIVE_U_PDMA_IRQ6, SIFIVE_U_PDMA_IRQ7);
 334    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 335    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 336        0x0, memmap[SIFIVE_U_DEV_PDMA].base,
 337        0x0, memmap[SIFIVE_U_DEV_PDMA].size);
 338    qemu_fdt_setprop_string(fdt, nodename, "compatible",
 339                            "sifive,fu540-c000-pdma");
 340    g_free(nodename);
 341
 342    nodename = g_strdup_printf("/soc/cache-controller@%lx",
 343        (long)memmap[SIFIVE_U_DEV_L2CC].base);
 344    qemu_fdt_add_subnode(fdt, nodename);
 345    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 346        0x0, memmap[SIFIVE_U_DEV_L2CC].base,
 347        0x0, memmap[SIFIVE_U_DEV_L2CC].size);
 348    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
 349        SIFIVE_U_L2CC_IRQ0, SIFIVE_U_L2CC_IRQ1, SIFIVE_U_L2CC_IRQ2);
 350    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 351    qemu_fdt_setprop(fdt, nodename, "cache-unified", NULL, 0);
 352    qemu_fdt_setprop_cell(fdt, nodename, "cache-size", 2097152);
 353    qemu_fdt_setprop_cell(fdt, nodename, "cache-sets", 1024);
 354    qemu_fdt_setprop_cell(fdt, nodename, "cache-level", 2);
 355    qemu_fdt_setprop_cell(fdt, nodename, "cache-block-size", 64);
 356    qemu_fdt_setprop_string(fdt, nodename, "compatible",
 357                            "sifive,fu540-c000-ccache");
 358    g_free(nodename);
 359
 360    nodename = g_strdup_printf("/soc/spi@%lx",
 361        (long)memmap[SIFIVE_U_DEV_QSPI2].base);
 362    qemu_fdt_add_subnode(fdt, nodename);
 363    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
 364    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
 365    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 366        prci_phandle, PRCI_CLK_TLCLK);
 367    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_QSPI2_IRQ);
 368    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 369    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 370        0x0, memmap[SIFIVE_U_DEV_QSPI2].base,
 371        0x0, memmap[SIFIVE_U_DEV_QSPI2].size);
 372    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,spi0");
 373    g_free(nodename);
 374
 375    nodename = g_strdup_printf("/soc/spi@%lx/mmc@0",
 376        (long)memmap[SIFIVE_U_DEV_QSPI2].base);
 377    qemu_fdt_add_subnode(fdt, nodename);
 378    qemu_fdt_setprop(fdt, nodename, "disable-wp", NULL, 0);
 379    qemu_fdt_setprop_cells(fdt, nodename, "voltage-ranges", 3300, 3300);
 380    qemu_fdt_setprop_cell(fdt, nodename, "spi-max-frequency", 20000000);
 381    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0);
 382    qemu_fdt_setprop_string(fdt, nodename, "compatible", "mmc-spi-slot");
 383    g_free(nodename);
 384
 385    nodename = g_strdup_printf("/soc/spi@%lx",
 386        (long)memmap[SIFIVE_U_DEV_QSPI0].base);
 387    qemu_fdt_add_subnode(fdt, nodename);
 388    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
 389    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
 390    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 391        prci_phandle, PRCI_CLK_TLCLK);
 392    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_QSPI0_IRQ);
 393    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 394    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 395        0x0, memmap[SIFIVE_U_DEV_QSPI0].base,
 396        0x0, memmap[SIFIVE_U_DEV_QSPI0].size);
 397    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,spi0");
 398    g_free(nodename);
 399
 400    nodename = g_strdup_printf("/soc/spi@%lx/flash@0",
 401        (long)memmap[SIFIVE_U_DEV_QSPI0].base);
 402    qemu_fdt_add_subnode(fdt, nodename);
 403    qemu_fdt_setprop_cell(fdt, nodename, "spi-rx-bus-width", 4);
 404    qemu_fdt_setprop_cell(fdt, nodename, "spi-tx-bus-width", 4);
 405    qemu_fdt_setprop(fdt, nodename, "m25p,fast-read", NULL, 0);
 406    qemu_fdt_setprop_cell(fdt, nodename, "spi-max-frequency", 50000000);
 407    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0);
 408    qemu_fdt_setprop_string(fdt, nodename, "compatible", "jedec,spi-nor");
 409    g_free(nodename);
 410
 411    phy_phandle = phandle++;
 412    nodename = g_strdup_printf("/soc/ethernet@%lx",
 413        (long)memmap[SIFIVE_U_DEV_GEM].base);
 414    qemu_fdt_add_subnode(fdt, nodename);
 415    qemu_fdt_setprop_string(fdt, nodename, "compatible",
 416        "sifive,fu540-c000-gem");
 417    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 418        0x0, memmap[SIFIVE_U_DEV_GEM].base,
 419        0x0, memmap[SIFIVE_U_DEV_GEM].size,
 420        0x0, memmap[SIFIVE_U_DEV_GEM_MGMT].base,
 421        0x0, memmap[SIFIVE_U_DEV_GEM_MGMT].size);
 422    qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
 423    qemu_fdt_setprop_string(fdt, nodename, "phy-mode", "gmii");
 424    qemu_fdt_setprop_cell(fdt, nodename, "phy-handle", phy_phandle);
 425    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 426    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ);
 427    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 428        prci_phandle, PRCI_CLK_GEMGXLPLL, prci_phandle, PRCI_CLK_GEMGXLPLL);
 429    qemu_fdt_setprop_string_array(fdt, nodename, "clock-names",
 430        (char **)&ethclk_names, ARRAY_SIZE(ethclk_names));
 431    qemu_fdt_setprop(fdt, nodename, "local-mac-address",
 432        s->soc.gem.conf.macaddr.a, ETH_ALEN);
 433    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
 434    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
 435
 436    qemu_fdt_add_subnode(fdt, "/aliases");
 437    qemu_fdt_setprop_string(fdt, "/aliases", "ethernet0", nodename);
 438
 439    g_free(nodename);
 440
 441    nodename = g_strdup_printf("/soc/ethernet@%lx/ethernet-phy@0",
 442        (long)memmap[SIFIVE_U_DEV_GEM].base);
 443    qemu_fdt_add_subnode(fdt, nodename);
 444    qemu_fdt_setprop_cell(fdt, nodename, "phandle", phy_phandle);
 445    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0x0);
 446    g_free(nodename);
 447
 448    nodename = g_strdup_printf("/soc/pwm@%lx",
 449        (long)memmap[SIFIVE_U_DEV_PWM0].base);
 450    qemu_fdt_add_subnode(fdt, nodename);
 451    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0");
 452    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 453        0x0, memmap[SIFIVE_U_DEV_PWM0].base,
 454        0x0, memmap[SIFIVE_U_DEV_PWM0].size);
 455    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 456    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
 457                           SIFIVE_U_PWM0_IRQ0, SIFIVE_U_PWM0_IRQ1,
 458                           SIFIVE_U_PWM0_IRQ2, SIFIVE_U_PWM0_IRQ3);
 459    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 460                           prci_phandle, PRCI_CLK_TLCLK);
 461    qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0);
 462    g_free(nodename);
 463
 464    nodename = g_strdup_printf("/soc/pwm@%lx",
 465        (long)memmap[SIFIVE_U_DEV_PWM1].base);
 466    qemu_fdt_add_subnode(fdt, nodename);
 467    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0");
 468    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 469        0x0, memmap[SIFIVE_U_DEV_PWM1].base,
 470        0x0, memmap[SIFIVE_U_DEV_PWM1].size);
 471    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 472    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
 473                           SIFIVE_U_PWM1_IRQ0, SIFIVE_U_PWM1_IRQ1,
 474                           SIFIVE_U_PWM1_IRQ2, SIFIVE_U_PWM1_IRQ3);
 475    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 476                           prci_phandle, PRCI_CLK_TLCLK);
 477    qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0);
 478    g_free(nodename);
 479
 480    nodename = g_strdup_printf("/soc/serial@%lx",
 481        (long)memmap[SIFIVE_U_DEV_UART1].base);
 482    qemu_fdt_add_subnode(fdt, nodename);
 483    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
 484    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 485        0x0, memmap[SIFIVE_U_DEV_UART1].base,
 486        0x0, memmap[SIFIVE_U_DEV_UART1].size);
 487    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 488        prci_phandle, PRCI_CLK_TLCLK);
 489    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 490    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART1_IRQ);
 491
 492    qemu_fdt_setprop_string(fdt, "/aliases", "serial1", nodename);
 493    g_free(nodename);
 494
 495    nodename = g_strdup_printf("/soc/serial@%lx",
 496        (long)memmap[SIFIVE_U_DEV_UART0].base);
 497    qemu_fdt_add_subnode(fdt, nodename);
 498    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
 499    qemu_fdt_setprop_cells(fdt, nodename, "reg",
 500        0x0, memmap[SIFIVE_U_DEV_UART0].base,
 501        0x0, memmap[SIFIVE_U_DEV_UART0].size);
 502    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
 503        prci_phandle, PRCI_CLK_TLCLK);
 504    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
 505    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART0_IRQ);
 506
 507    qemu_fdt_add_subnode(fdt, "/chosen");
 508    qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
 509    qemu_fdt_setprop_string(fdt, "/aliases", "serial0", nodename);
 510
 511    g_free(nodename);
 512
 513update_bootargs:
 514    if (cmdline && *cmdline) {
 515        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
 516    }
 517}
 518
 519static void sifive_u_machine_reset(void *opaque, int n, int level)
 520{
 521    /* gpio pin active low triggers reset */
 522    if (!level) {
 523        qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 524    }
 525}
 526
 527static void sifive_u_machine_init(MachineState *machine)
 528{
 529    const MemMapEntry *memmap = sifive_u_memmap;
 530    SiFiveUState *s = RISCV_U_MACHINE(machine);
 531    MemoryRegion *system_memory = get_system_memory();
 532    MemoryRegion *flash0 = g_new(MemoryRegion, 1);
 533    target_ulong start_addr = memmap[SIFIVE_U_DEV_DRAM].base;
 534    target_ulong firmware_end_addr, kernel_start_addr;
 535    uint32_t start_addr_hi32 = 0x00000000;
 536    int i;
 537    uint32_t fdt_load_addr;
 538    uint64_t kernel_entry;
 539    DriveInfo *dinfo;
 540    BlockBackend *blk;
 541    DeviceState *flash_dev, *sd_dev, *card_dev;
 542    qemu_irq flash_cs, sd_cs;
 543
 544    /* Initialize SoC */
 545    object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_RISCV_U_SOC);
 546    object_property_set_uint(OBJECT(&s->soc), "serial", s->serial,
 547                             &error_abort);
 548    object_property_set_str(OBJECT(&s->soc), "cpu-type", machine->cpu_type,
 549                             &error_abort);
 550    qdev_realize(DEVICE(&s->soc), NULL, &error_fatal);
 551
 552    /* register RAM */
 553    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_DRAM].base,
 554                                machine->ram);
 555
 556    /* register QSPI0 Flash */
 557    memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
 558                           memmap[SIFIVE_U_DEV_FLASH0].size, &error_fatal);
 559    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_FLASH0].base,
 560                                flash0);
 561
 562    /* register gpio-restart */
 563    qdev_connect_gpio_out(DEVICE(&(s->soc.gpio)), 10,
 564                          qemu_allocate_irq(sifive_u_machine_reset, NULL, 0));
 565
 566    /* create device tree */
 567    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
 568               riscv_is_32bit(&s->soc.u_cpus));
 569
 570    if (s->start_in_flash) {
 571        /*
 572         * If start_in_flash property is given, assign s->msel to a value
 573         * that representing booting from QSPI0 memory-mapped flash.
 574         *
 575         * This also means that when both start_in_flash and msel properties
 576         * are given, start_in_flash takes the precedence over msel.
 577         *
 578         * Note this is to keep backward compatibility not to break existing
 579         * users that use start_in_flash property.
 580         */
 581        s->msel = MSEL_MEMMAP_QSPI0_FLASH;
 582    }
 583
 584    switch (s->msel) {
 585    case MSEL_MEMMAP_QSPI0_FLASH:
 586        start_addr = memmap[SIFIVE_U_DEV_FLASH0].base;
 587        break;
 588    case MSEL_L2LIM_QSPI0_FLASH:
 589    case MSEL_L2LIM_QSPI2_SD:
 590        start_addr = memmap[SIFIVE_U_DEV_L2LIM].base;
 591        break;
 592    default:
 593        start_addr = memmap[SIFIVE_U_DEV_DRAM].base;
 594        break;
 595    }
 596
 597    if (riscv_is_32bit(&s->soc.u_cpus)) {
 598        firmware_end_addr = riscv_find_and_load_firmware(machine,
 599                                    RISCV32_BIOS_BIN, start_addr, NULL);
 600    } else {
 601        firmware_end_addr = riscv_find_and_load_firmware(machine,
 602                                    RISCV64_BIOS_BIN, start_addr, NULL);
 603    }
 604
 605    if (machine->kernel_filename) {
 606        kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
 607                                                         firmware_end_addr);
 608
 609        kernel_entry = riscv_load_kernel(machine->kernel_filename,
 610                                         kernel_start_addr, NULL);
 611
 612        if (machine->initrd_filename) {
 613            hwaddr start;
 614            hwaddr end = riscv_load_initrd(machine->initrd_filename,
 615                                           machine->ram_size, kernel_entry,
 616                                           &start);
 617            qemu_fdt_setprop_cell(s->fdt, "/chosen",
 618                                  "linux,initrd-start", start);
 619            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
 620                                  end);
 621        }
 622    } else {
 623       /*
 624        * If dynamic firmware is used, it doesn't know where is the next mode
 625        * if kernel argument is not set.
 626        */
 627        kernel_entry = 0;
 628    }
 629
 630    /* Compute the fdt load address in dram */
 631    fdt_load_addr = riscv_load_fdt(memmap[SIFIVE_U_DEV_DRAM].base,
 632                                   machine->ram_size, s->fdt);
 633    if (!riscv_is_32bit(&s->soc.u_cpus)) {
 634        start_addr_hi32 = (uint64_t)start_addr >> 32;
 635    }
 636
 637    /* Set machine->fdt for 'dumpdtb' QMP/HMP command */
 638    machine->fdt = s->fdt;
 639
 640    /* reset vector */
 641    uint32_t reset_vec[12] = {
 642        s->msel,                       /* MSEL pin state */
 643        0x00000297,                    /* 1:  auipc  t0, %pcrel_hi(fw_dyn) */
 644        0x02c28613,                    /*     addi   a2, t0, %pcrel_lo(1b) */
 645        0xf1402573,                    /*     csrr   a0, mhartid  */
 646        0,
 647        0,
 648        0x00028067,                    /*     jr     t0 */
 649        start_addr,                    /* start: .dword */
 650        start_addr_hi32,
 651        fdt_load_addr,                 /* fdt_laddr: .dword */
 652        0x00000000,
 653        0x00000000,
 654                                       /* fw_dyn: */
 655    };
 656    if (riscv_is_32bit(&s->soc.u_cpus)) {
 657        reset_vec[4] = 0x0202a583;     /*     lw     a1, 32(t0) */
 658        reset_vec[5] = 0x0182a283;     /*     lw     t0, 24(t0) */
 659    } else {
 660        reset_vec[4] = 0x0202b583;     /*     ld     a1, 32(t0) */
 661        reset_vec[5] = 0x0182b283;     /*     ld     t0, 24(t0) */
 662    }
 663
 664
 665    /* copy in the reset vector in little_endian byte order */
 666    for (i = 0; i < ARRAY_SIZE(reset_vec); i++) {
 667        reset_vec[i] = cpu_to_le32(reset_vec[i]);
 668    }
 669    rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec),
 670                          memmap[SIFIVE_U_DEV_MROM].base, &address_space_memory);
 671
 672    riscv_rom_copy_firmware_info(machine, memmap[SIFIVE_U_DEV_MROM].base,
 673                                 memmap[SIFIVE_U_DEV_MROM].size,
 674                                 sizeof(reset_vec), kernel_entry);
 675
 676    /* Connect an SPI flash to SPI0 */
 677    flash_dev = qdev_new("is25wp256");
 678    dinfo = drive_get(IF_MTD, 0, 0);
 679    if (dinfo) {
 680        qdev_prop_set_drive_err(flash_dev, "drive",
 681                                blk_by_legacy_dinfo(dinfo),
 682                                &error_fatal);
 683    }
 684    qdev_realize_and_unref(flash_dev, BUS(s->soc.spi0.spi), &error_fatal);
 685
 686    flash_cs = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
 687    sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi0), 1, flash_cs);
 688
 689    /* Connect an SD card to SPI2 */
 690    sd_dev = ssi_create_peripheral(s->soc.spi2.spi, "ssi-sd");
 691
 692    sd_cs = qdev_get_gpio_in_named(sd_dev, SSI_GPIO_CS, 0);
 693    sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi2), 1, sd_cs);
 694
 695    dinfo = drive_get(IF_SD, 0, 0);
 696    blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
 697    card_dev = qdev_new(TYPE_SD_CARD);
 698    qdev_prop_set_drive_err(card_dev, "drive", blk, &error_fatal);
 699    qdev_prop_set_bit(card_dev, "spi", true);
 700    qdev_realize_and_unref(card_dev,
 701                           qdev_get_child_bus(sd_dev, "sd-bus"),
 702                           &error_fatal);
 703}
 704
 705static bool sifive_u_machine_get_start_in_flash(Object *obj, Error **errp)
 706{
 707    SiFiveUState *s = RISCV_U_MACHINE(obj);
 708
 709    return s->start_in_flash;
 710}
 711
 712static void sifive_u_machine_set_start_in_flash(Object *obj, bool value, Error **errp)
 713{
 714    SiFiveUState *s = RISCV_U_MACHINE(obj);
 715
 716    s->start_in_flash = value;
 717}
 718
 719static void sifive_u_machine_instance_init(Object *obj)
 720{
 721    SiFiveUState *s = RISCV_U_MACHINE(obj);
 722
 723    s->start_in_flash = false;
 724    s->msel = 0;
 725    object_property_add_uint32_ptr(obj, "msel", &s->msel,
 726                                   OBJ_PROP_FLAG_READWRITE);
 727    object_property_set_description(obj, "msel",
 728                                    "Mode Select (MSEL[3:0]) pin state");
 729
 730    s->serial = OTP_SERIAL;
 731    object_property_add_uint32_ptr(obj, "serial", &s->serial,
 732                                   OBJ_PROP_FLAG_READWRITE);
 733    object_property_set_description(obj, "serial", "Board serial number");
 734}
 735
 736static void sifive_u_machine_class_init(ObjectClass *oc, void *data)
 737{
 738    MachineClass *mc = MACHINE_CLASS(oc);
 739
 740    mc->desc = "RISC-V Board compatible with SiFive U SDK";
 741    mc->init = sifive_u_machine_init;
 742    mc->max_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + SIFIVE_U_COMPUTE_CPU_COUNT;
 743    mc->min_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + 1;
 744    mc->default_cpu_type = SIFIVE_U_CPU;
 745    mc->default_cpus = mc->min_cpus;
 746    mc->default_ram_id = "riscv.sifive.u.ram";
 747
 748    object_class_property_add_bool(oc, "start-in-flash",
 749                                   sifive_u_machine_get_start_in_flash,
 750                                   sifive_u_machine_set_start_in_flash);
 751    object_class_property_set_description(oc, "start-in-flash",
 752                                          "Set on to tell QEMU's ROM to jump to "
 753                                          "flash. Otherwise QEMU will jump to DRAM "
 754                                          "or L2LIM depending on the msel value");
 755}
 756
 757static const TypeInfo sifive_u_machine_typeinfo = {
 758    .name       = MACHINE_TYPE_NAME("sifive_u"),
 759    .parent     = TYPE_MACHINE,
 760    .class_init = sifive_u_machine_class_init,
 761    .instance_init = sifive_u_machine_instance_init,
 762    .instance_size = sizeof(SiFiveUState),
 763};
 764
 765static void sifive_u_machine_init_register_types(void)
 766{
 767    type_register_static(&sifive_u_machine_typeinfo);
 768}
 769
 770type_init(sifive_u_machine_init_register_types)
 771
 772static void sifive_u_soc_instance_init(Object *obj)
 773{
 774    SiFiveUSoCState *s = RISCV_U_SOC(obj);
 775
 776    object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER);
 777    qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0);
 778
 779    object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus,
 780                            TYPE_RISCV_HART_ARRAY);
 781    qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1);
 782    qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0);
 783    qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU);
 784    qdev_prop_set_uint64(DEVICE(&s->e_cpus), "resetvec", 0x1004);
 785
 786    object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
 787    qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
 788
 789    object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus,
 790                            TYPE_RISCV_HART_ARRAY);
 791
 792    object_initialize_child(obj, "prci", &s->prci, TYPE_SIFIVE_U_PRCI);
 793    object_initialize_child(obj, "otp", &s->otp, TYPE_SIFIVE_U_OTP);
 794    object_initialize_child(obj, "gem", &s->gem, TYPE_CADENCE_GEM);
 795    object_initialize_child(obj, "gpio", &s->gpio, TYPE_SIFIVE_GPIO);
 796    object_initialize_child(obj, "pdma", &s->dma, TYPE_SIFIVE_PDMA);
 797    object_initialize_child(obj, "spi0", &s->spi0, TYPE_SIFIVE_SPI);
 798    object_initialize_child(obj, "spi2", &s->spi2, TYPE_SIFIVE_SPI);
 799    object_initialize_child(obj, "pwm0", &s->pwm[0], TYPE_SIFIVE_PWM);
 800    object_initialize_child(obj, "pwm1", &s->pwm[1], TYPE_SIFIVE_PWM);
 801}
 802
 803static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
 804{
 805    MachineState *ms = MACHINE(qdev_get_machine());
 806    SiFiveUSoCState *s = RISCV_U_SOC(dev);
 807    const MemMapEntry *memmap = sifive_u_memmap;
 808    MemoryRegion *system_memory = get_system_memory();
 809    MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
 810    MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
 811    char *plic_hart_config;
 812    int i, j;
 813    NICInfo *nd = &nd_table[0];
 814
 815    qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
 816    qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
 817    qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", s->cpu_type);
 818    qdev_prop_set_uint64(DEVICE(&s->u_cpus), "resetvec", 0x1004);
 819
 820    sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_fatal);
 821    sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &error_fatal);
 822    /*
 823     * The cluster must be realized after the RISC-V hart array container,
 824     * as the container's CPU object is only created on realize, and the
 825     * CPU must exist and have been parented into the cluster before the
 826     * cluster is realized.
 827     */
 828    qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort);
 829    qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort);
 830
 831    /* boot rom */
 832    memory_region_init_rom(mask_rom, OBJECT(dev), "riscv.sifive.u.mrom",
 833                           memmap[SIFIVE_U_DEV_MROM].size, &error_fatal);
 834    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_MROM].base,
 835                                mask_rom);
 836
 837    /*
 838     * Add L2-LIM at reset size.
 839     * This should be reduced in size as the L2 Cache Controller WayEnable
 840     * register is incremented. Unfortunately I don't see a nice (or any) way
 841     * to handle reducing or blocking out the L2 LIM while still allowing it
 842     * be re returned to all enabled after a reset. For the time being, just
 843     * leave it enabled all the time. This won't break anything, but will be
 844     * too generous to misbehaving guests.
 845     */
 846    memory_region_init_ram(l2lim_mem, NULL, "riscv.sifive.u.l2lim",
 847                           memmap[SIFIVE_U_DEV_L2LIM].size, &error_fatal);
 848    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_L2LIM].base,
 849                                l2lim_mem);
 850
 851    /* create PLIC hart topology configuration string */
 852    plic_hart_config = riscv_plic_hart_config_string(ms->smp.cpus);
 853
 854    /* MMIO */
 855    s->plic = sifive_plic_create(memmap[SIFIVE_U_DEV_PLIC].base,
 856        plic_hart_config, ms->smp.cpus, 0,
 857        SIFIVE_U_PLIC_NUM_SOURCES,
 858        SIFIVE_U_PLIC_NUM_PRIORITIES,
 859        SIFIVE_U_PLIC_PRIORITY_BASE,
 860        SIFIVE_U_PLIC_PENDING_BASE,
 861        SIFIVE_U_PLIC_ENABLE_BASE,
 862        SIFIVE_U_PLIC_ENABLE_STRIDE,
 863        SIFIVE_U_PLIC_CONTEXT_BASE,
 864        SIFIVE_U_PLIC_CONTEXT_STRIDE,
 865        memmap[SIFIVE_U_DEV_PLIC].size);
 866    g_free(plic_hart_config);
 867    sifive_uart_create(system_memory, memmap[SIFIVE_U_DEV_UART0].base,
 868        serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ));
 869    sifive_uart_create(system_memory, memmap[SIFIVE_U_DEV_UART1].base,
 870        serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ));
 871    riscv_aclint_swi_create(memmap[SIFIVE_U_DEV_CLINT].base, 0,
 872        ms->smp.cpus, false);
 873    riscv_aclint_mtimer_create(memmap[SIFIVE_U_DEV_CLINT].base +
 874            RISCV_ACLINT_SWI_SIZE,
 875        RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, ms->smp.cpus,
 876        RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME,
 877        CLINT_TIMEBASE_FREQ, false);
 878
 879    if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) {
 880        return;
 881    }
 882    sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_DEV_PRCI].base);
 883
 884    qdev_prop_set_uint32(DEVICE(&s->gpio), "ngpio", 16);
 885    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
 886        return;
 887    }
 888    sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_U_DEV_GPIO].base);
 889
 890    /* Pass all GPIOs to the SOC layer so they are available to the board */
 891    qdev_pass_gpios(DEVICE(&s->gpio), dev, NULL);
 892
 893    /* Connect GPIO interrupts to the PLIC */
 894    for (i = 0; i < 16; i++) {
 895        sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), i,
 896                           qdev_get_gpio_in(DEVICE(s->plic),
 897                                            SIFIVE_U_GPIO_IRQ0 + i));
 898    }
 899
 900    /* PDMA */
 901    sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp);
 902    sysbus_mmio_map(SYS_BUS_DEVICE(&s->dma), 0, memmap[SIFIVE_U_DEV_PDMA].base);
 903
 904    /* Connect PDMA interrupts to the PLIC */
 905    for (i = 0; i < SIFIVE_PDMA_IRQS; i++) {
 906        sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), i,
 907                           qdev_get_gpio_in(DEVICE(s->plic),
 908                                            SIFIVE_U_PDMA_IRQ0 + i));
 909    }
 910
 911    qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial);
 912    if (!sysbus_realize(SYS_BUS_DEVICE(&s->otp), errp)) {
 913        return;
 914    }
 915    sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_DEV_OTP].base);
 916
 917    /* FIXME use qdev NIC properties instead of nd_table[] */
 918    if (nd->used) {
 919        qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
 920        qdev_set_nic_properties(DEVICE(&s->gem), nd);
 921    }
 922    object_property_set_int(OBJECT(&s->gem), "revision", GEM_REVISION,
 923                            &error_abort);
 924    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gem), errp)) {
 925        return;
 926    }
 927    sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem), 0, memmap[SIFIVE_U_DEV_GEM].base);
 928    sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0,
 929                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ));
 930
 931    /* PWM */
 932    for (i = 0; i < 2; i++) {
 933        if (!sysbus_realize(SYS_BUS_DEVICE(&s->pwm[i]), errp)) {
 934            return;
 935        }
 936        sysbus_mmio_map(SYS_BUS_DEVICE(&s->pwm[i]), 0,
 937                                memmap[SIFIVE_U_DEV_PWM0].base + (0x1000 * i));
 938
 939        /* Connect PWM interrupts to the PLIC */
 940        for (j = 0; j < SIFIVE_PWM_IRQS; j++) {
 941            sysbus_connect_irq(SYS_BUS_DEVICE(&s->pwm[i]), j,
 942                               qdev_get_gpio_in(DEVICE(s->plic),
 943                                        SIFIVE_U_PWM0_IRQ0 + (i * 4) + j));
 944        }
 945    }
 946
 947    create_unimplemented_device("riscv.sifive.u.gem-mgmt",
 948        memmap[SIFIVE_U_DEV_GEM_MGMT].base, memmap[SIFIVE_U_DEV_GEM_MGMT].size);
 949
 950    create_unimplemented_device("riscv.sifive.u.dmc",
 951        memmap[SIFIVE_U_DEV_DMC].base, memmap[SIFIVE_U_DEV_DMC].size);
 952
 953    create_unimplemented_device("riscv.sifive.u.l2cc",
 954        memmap[SIFIVE_U_DEV_L2CC].base, memmap[SIFIVE_U_DEV_L2CC].size);
 955
 956    sysbus_realize(SYS_BUS_DEVICE(&s->spi0), errp);
 957    sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi0), 0,
 958                    memmap[SIFIVE_U_DEV_QSPI0].base);
 959    sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi0), 0,
 960                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_QSPI0_IRQ));
 961    sysbus_realize(SYS_BUS_DEVICE(&s->spi2), errp);
 962    sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi2), 0,
 963                    memmap[SIFIVE_U_DEV_QSPI2].base);
 964    sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi2), 0,
 965                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_QSPI2_IRQ));
 966}
 967
 968static Property sifive_u_soc_props[] = {
 969    DEFINE_PROP_UINT32("serial", SiFiveUSoCState, serial, OTP_SERIAL),
 970    DEFINE_PROP_STRING("cpu-type", SiFiveUSoCState, cpu_type),
 971    DEFINE_PROP_END_OF_LIST()
 972};
 973
 974static void sifive_u_soc_class_init(ObjectClass *oc, void *data)
 975{
 976    DeviceClass *dc = DEVICE_CLASS(oc);
 977
 978    device_class_set_props(dc, sifive_u_soc_props);
 979    dc->realize = sifive_u_soc_realize;
 980    /* Reason: Uses serial_hds in realize function, thus can't be used twice */
 981    dc->user_creatable = false;
 982}
 983
 984static const TypeInfo sifive_u_soc_type_info = {
 985    .name = TYPE_RISCV_U_SOC,
 986    .parent = TYPE_DEVICE,
 987    .instance_size = sizeof(SiFiveUSoCState),
 988    .instance_init = sifive_u_soc_instance_init,
 989    .class_init = sifive_u_soc_class_init,
 990};
 991
 992static void sifive_u_soc_register_types(void)
 993{
 994    type_register_static(&sifive_u_soc_type_info);
 995}
 996
 997type_init(sifive_u_soc_register_types)
 998