Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 999 insertions, 0 deletions

diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
new file mode 100644
index 000000000..589ae72a5
--- /dev/null
+++ b/hw/riscv/sifive_u.c
@@ -0,0 +1,999 @@
+/*
+ * QEMU RISC-V Board Compatible with SiFive Freedom U SDK
+ *
+ * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
+ * Copyright (c) 2017 SiFive, Inc.
+ * Copyright (c) 2019 Bin Meng <bmeng.cn@gmail.com>
+ *
+ * Provides a board compatible with the SiFive Freedom U SDK:
+ *
+ * 0) UART
+ * 1) CLINT (Core Level Interruptor)
+ * 2) PLIC (Platform Level Interrupt Controller)
+ * 3) PRCI (Power, Reset, Clock, Interrupt)
+ * 4) GPIO (General Purpose Input/Output Controller)
+ * 5) OTP (One-Time Programmable) memory with stored serial number
+ * 6) GEM (Gigabit Ethernet Controller) and management block
+ * 7) DMA (Direct Memory Access Controller)
+ * 8) SPI0 connected to an SPI flash
+ * 9) SPI2 connected to an SD card
+ * 10) PWM0 and PWM1
+ *
+ * This board currently generates devicetree dynamically that indicates at least
+ * two harts and up to five harts.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+#include "qapi/visitor.h"
+#include "hw/boards.h"
+#include "hw/irq.h"
+#include "hw/loader.h"
+#include "hw/sysbus.h"
+#include "hw/char/serial.h"
+#include "hw/cpu/cluster.h"
+#include "hw/misc/unimp.h"
+#include "hw/ssi/ssi.h"
+#include "target/riscv/cpu.h"
+#include "hw/riscv/riscv_hart.h"
+#include "hw/riscv/sifive_u.h"
+#include "hw/riscv/boot.h"
+#include "hw/char/sifive_uart.h"
+#include "hw/intc/riscv_aclint.h"
+#include "hw/intc/sifive_plic.h"
+#include "chardev/char.h"
+#include "net/eth.h"
+#include "sysemu/device_tree.h"
+#include "sysemu/runstate.h"
+#include "sysemu/sysemu.h"
+
+#include <libfdt.h>
+
+/* CLINT timebase frequency */
+#define CLINT_TIMEBASE_FREQ 1000000
+
+static const MemMapEntry sifive_u_memmap[] = {
+    [SIFIVE_U_DEV_DEBUG] =    {        0x0,      0x100 },
+    [SIFIVE_U_DEV_MROM] =     {     0x1000,     0xf000 },
+    [SIFIVE_U_DEV_CLINT] =    {  0x2000000,    0x10000 },
+    [SIFIVE_U_DEV_L2CC] =     {  0x2010000,     0x1000 },
+    [SIFIVE_U_DEV_PDMA] =     {  0x3000000,   0x100000 },
+    [SIFIVE_U_DEV_L2LIM] =    {  0x8000000,  0x2000000 },
+    [SIFIVE_U_DEV_PLIC] =     {  0xc000000,  0x4000000 },
+    [SIFIVE_U_DEV_PRCI] =     { 0x10000000,     0x1000 },
+    [SIFIVE_U_DEV_UART0] =    { 0x10010000,     0x1000 },
+    [SIFIVE_U_DEV_UART1] =    { 0x10011000,     0x1000 },
+    [SIFIVE_U_DEV_PWM0] =     { 0x10020000,     0x1000 },
+    [SIFIVE_U_DEV_PWM1] =     { 0x10021000,     0x1000 },
+    [SIFIVE_U_DEV_QSPI0] =    { 0x10040000,     0x1000 },
+    [SIFIVE_U_DEV_QSPI2] =    { 0x10050000,     0x1000 },
+    [SIFIVE_U_DEV_GPIO] =     { 0x10060000,     0x1000 },
+    [SIFIVE_U_DEV_OTP] =      { 0x10070000,     0x1000 },
+    [SIFIVE_U_DEV_GEM] =      { 0x10090000,     0x2000 },
+    [SIFIVE_U_DEV_GEM_MGMT] = { 0x100a0000,     0x1000 },
+    [SIFIVE_U_DEV_DMC] =      { 0x100b0000,    0x10000 },
+    [SIFIVE_U_DEV_FLASH0] =   { 0x20000000, 0x10000000 },
+    [SIFIVE_U_DEV_DRAM] =     { 0x80000000,        0x0 },
+};
+
+#define OTP_SERIAL          1
+#define GEM_REVISION        0x10070109
+
+static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap,
+                       uint64_t mem_size, const char *cmdline, bool is_32_bit)
+{
+    MachineState *ms = MACHINE(qdev_get_machine());
+    void *fdt;
+    int cpu;
+    uint32_t *cells;
+    char *nodename;
+    uint32_t plic_phandle, prci_phandle, gpio_phandle, phandle = 1;
+    uint32_t hfclk_phandle, rtcclk_phandle, phy_phandle;
+    static const char * const ethclk_names[2] = { "pclk", "hclk" };
+    static const char * const clint_compat[2] = {
+        "sifive,clint0", "riscv,clint0"
+    };
+    static const char * const plic_compat[2] = {
+        "sifive,plic-1.0.0", "riscv,plic0"
+    };
+
+    if (ms->dtb) {
+        fdt = s->fdt = load_device_tree(ms->dtb, &s->fdt_size);
+        if (!fdt) {
+            error_report("load_device_tree() failed");
+            exit(1);
+        }
+        goto update_bootargs;
+    } else {
+        fdt = s->fdt = create_device_tree(&s->fdt_size);
+        if (!fdt) {
+            error_report("create_device_tree() failed");
+            exit(1);
+        }
+    }
+
+    qemu_fdt_setprop_string(fdt, "/", "model", "SiFive HiFive Unleashed A00");
+    qemu_fdt_setprop_string(fdt, "/", "compatible",
+                            "sifive,hifive-unleashed-a00");
+    qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
+    qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
+
+    qemu_fdt_add_subnode(fdt, "/soc");
+    qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
+    qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus");
+    qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
+    qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
+
+    hfclk_phandle = phandle++;
+    nodename = g_strdup_printf("/hfclk");
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", hfclk_phandle);
+    qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "hfclk");
+    qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
+        SIFIVE_U_HFCLK_FREQ);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
+    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
+    g_free(nodename);
+
+    rtcclk_phandle = phandle++;
+    nodename = g_strdup_printf("/rtcclk");
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", rtcclk_phandle);
+    qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "rtcclk");
+    qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
+        SIFIVE_U_RTCCLK_FREQ);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
+    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/memory@%lx",
+        (long)memmap[SIFIVE_U_DEV_DRAM].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        memmap[SIFIVE_U_DEV_DRAM].base >> 32, memmap[SIFIVE_U_DEV_DRAM].base,
+        mem_size >> 32, mem_size);
+    qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
+    g_free(nodename);
+
+    qemu_fdt_add_subnode(fdt, "/cpus");
+    qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
+        CLINT_TIMEBASE_FREQ);
+    qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
+    qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
+
+    for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) {
+        int cpu_phandle = phandle++;
+        nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
+        char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
+        char *isa;
+        qemu_fdt_add_subnode(fdt, nodename);
+        /* cpu 0 is the management hart that does not have mmu */
+        if (cpu != 0) {
+            if (is_32_bit) {
+                qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32");
+            } else {
+                qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
+            }
+            isa = riscv_isa_string(&s->soc.u_cpus.harts[cpu - 1]);
+        } else {
+            isa = riscv_isa_string(&s->soc.e_cpus.harts[0]);
+        }
+        qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
+        qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
+        qemu_fdt_setprop_string(fdt, nodename, "status", "okay");
+        qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu);
+        qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu");
+        qemu_fdt_add_subnode(fdt, intc);
+        qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle);
+        qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc");
+        qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0);
+        qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1);
+        g_free(isa);
+        g_free(intc);
+        g_free(nodename);
+    }
+
+    cells =  g_new0(uint32_t, ms->smp.cpus * 4);
+    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+        nodename =
+            g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
+        uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
+        cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
+        cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
+        cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
+        cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
+        g_free(nodename);
+    }
+    nodename = g_strdup_printf("/soc/clint@%lx",
+        (long)memmap[SIFIVE_U_DEV_CLINT].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string_array(fdt, nodename, "compatible",
+        (char **)&clint_compat, ARRAY_SIZE(clint_compat));
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_CLINT].base,
+        0x0, memmap[SIFIVE_U_DEV_CLINT].size);
+    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
+        cells, ms->smp.cpus * sizeof(uint32_t) * 4);
+    g_free(cells);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/otp@%lx",
+        (long)memmap[SIFIVE_U_DEV_OTP].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "fuse-count", SIFIVE_U_OTP_REG_SIZE);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_OTP].base,
+        0x0, memmap[SIFIVE_U_DEV_OTP].size);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible",
+        "sifive,fu540-c000-otp");
+    g_free(nodename);
+
+    prci_phandle = phandle++;
+    nodename = g_strdup_printf("/soc/clock-controller@%lx",
+        (long)memmap[SIFIVE_U_DEV_PRCI].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", prci_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x1);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        hfclk_phandle, rtcclk_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_PRCI].base,
+        0x0, memmap[SIFIVE_U_DEV_PRCI].size);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible",
+        "sifive,fu540-c000-prci");
+    g_free(nodename);
+
+    plic_phandle = phandle++;
+    cells =  g_new0(uint32_t, ms->smp.cpus * 4 - 2);
+    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+        nodename =
+            g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
+        uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
+        /* cpu 0 is the management hart that does not have S-mode */
+        if (cpu == 0) {
+            cells[0] = cpu_to_be32(intc_phandle);
+            cells[1] = cpu_to_be32(IRQ_M_EXT);
+        } else {
+            cells[cpu * 4 - 2] = cpu_to_be32(intc_phandle);
+            cells[cpu * 4 - 1] = cpu_to_be32(IRQ_M_EXT);
+            cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
+            cells[cpu * 4 + 1] = cpu_to_be32(IRQ_S_EXT);
+        }
+        g_free(nodename);
+    }
+    nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
+        (long)memmap[SIFIVE_U_DEV_PLIC].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
+    qemu_fdt_setprop_string_array(fdt, nodename, "compatible",
+        (char **)&plic_compat, ARRAY_SIZE(plic_compat));
+    qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
+        cells, (ms->smp.cpus * 4 - 2) * sizeof(uint32_t));
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_PLIC].base,
+        0x0, memmap[SIFIVE_U_DEV_PLIC].size);
+    qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 0x35);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle);
+    plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
+    g_free(cells);
+    g_free(nodename);
+
+    gpio_phandle = phandle++;
+    nodename = g_strdup_printf("/soc/gpio@%lx",
+        (long)memmap[SIFIVE_U_DEV_GPIO].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", gpio_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 2);
+    qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop_cell(fdt, nodename, "#gpio-cells", 2);
+    qemu_fdt_setprop(fdt, nodename, "gpio-controller", NULL, 0);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_GPIO].base,
+        0x0, memmap[SIFIVE_U_DEV_GPIO].size);
+    qemu_fdt_setprop_cells(fdt, nodename, "interrupts", SIFIVE_U_GPIO_IRQ0,
+        SIFIVE_U_GPIO_IRQ1, SIFIVE_U_GPIO_IRQ2, SIFIVE_U_GPIO_IRQ3,
+        SIFIVE_U_GPIO_IRQ4, SIFIVE_U_GPIO_IRQ5, SIFIVE_U_GPIO_IRQ6,
+        SIFIVE_U_GPIO_IRQ7, SIFIVE_U_GPIO_IRQ8, SIFIVE_U_GPIO_IRQ9,
+        SIFIVE_U_GPIO_IRQ10, SIFIVE_U_GPIO_IRQ11, SIFIVE_U_GPIO_IRQ12,
+        SIFIVE_U_GPIO_IRQ13, SIFIVE_U_GPIO_IRQ14, SIFIVE_U_GPIO_IRQ15);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,gpio0");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/gpio-restart");
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cells(fdt, nodename, "gpios", gpio_phandle, 10, 1);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "gpio-restart");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/dma@%lx",
+        (long)memmap[SIFIVE_U_DEV_PDMA].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "#dma-cells", 1);
+    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
+        SIFIVE_U_PDMA_IRQ0, SIFIVE_U_PDMA_IRQ1, SIFIVE_U_PDMA_IRQ2,
+        SIFIVE_U_PDMA_IRQ3, SIFIVE_U_PDMA_IRQ4, SIFIVE_U_PDMA_IRQ5,
+        SIFIVE_U_PDMA_IRQ6, SIFIVE_U_PDMA_IRQ7);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_PDMA].base,
+        0x0, memmap[SIFIVE_U_DEV_PDMA].size);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible",
+                            "sifive,fu540-c000-pdma");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/cache-controller@%lx",
+        (long)memmap[SIFIVE_U_DEV_L2CC].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_L2CC].base,
+        0x0, memmap[SIFIVE_U_DEV_L2CC].size);
+    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
+        SIFIVE_U_L2CC_IRQ0, SIFIVE_U_L2CC_IRQ1, SIFIVE_U_L2CC_IRQ2);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop(fdt, nodename, "cache-unified", NULL, 0);
+    qemu_fdt_setprop_cell(fdt, nodename, "cache-size", 2097152);
+    qemu_fdt_setprop_cell(fdt, nodename, "cache-sets", 1024);
+    qemu_fdt_setprop_cell(fdt, nodename, "cache-level", 2);
+    qemu_fdt_setprop_cell(fdt, nodename, "cache-block-size", 64);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible",
+                            "sifive,fu540-c000-ccache");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/spi@%lx",
+        (long)memmap[SIFIVE_U_DEV_QSPI2].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
+    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_QSPI2_IRQ);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_QSPI2].base,
+        0x0, memmap[SIFIVE_U_DEV_QSPI2].size);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,spi0");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/spi@%lx/mmc@0",
+        (long)memmap[SIFIVE_U_DEV_QSPI2].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop(fdt, nodename, "disable-wp", NULL, 0);
+    qemu_fdt_setprop_cells(fdt, nodename, "voltage-ranges", 3300, 3300);
+    qemu_fdt_setprop_cell(fdt, nodename, "spi-max-frequency", 20000000);
+    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "mmc-spi-slot");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/spi@%lx",
+        (long)memmap[SIFIVE_U_DEV_QSPI0].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
+    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_QSPI0_IRQ);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_QSPI0].base,
+        0x0, memmap[SIFIVE_U_DEV_QSPI0].size);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,spi0");
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/spi@%lx/flash@0",
+        (long)memmap[SIFIVE_U_DEV_QSPI0].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "spi-rx-bus-width", 4);
+    qemu_fdt_setprop_cell(fdt, nodename, "spi-tx-bus-width", 4);
+    qemu_fdt_setprop(fdt, nodename, "m25p,fast-read", NULL, 0);
+    qemu_fdt_setprop_cell(fdt, nodename, "spi-max-frequency", 50000000);
+    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "jedec,spi-nor");
+    g_free(nodename);
+
+    phy_phandle = phandle++;
+    nodename = g_strdup_printf("/soc/ethernet@%lx",
+        (long)memmap[SIFIVE_U_DEV_GEM].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible",
+        "sifive,fu540-c000-gem");
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_GEM].base,
+        0x0, memmap[SIFIVE_U_DEV_GEM].size,
+        0x0, memmap[SIFIVE_U_DEV_GEM_MGMT].base,
+        0x0, memmap[SIFIVE_U_DEV_GEM_MGMT].size);
+    qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
+    qemu_fdt_setprop_string(fdt, nodename, "phy-mode", "gmii");
+    qemu_fdt_setprop_cell(fdt, nodename, "phy-handle", phy_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_GEMGXLPLL, prci_phandle, PRCI_CLK_GEMGXLPLL);
+    qemu_fdt_setprop_string_array(fdt, nodename, "clock-names",
+        (char **)&ethclk_names, ARRAY_SIZE(ethclk_names));
+    qemu_fdt_setprop(fdt, nodename, "local-mac-address",
+        s->soc.gem.conf.macaddr.a, ETH_ALEN);
+    qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
+    qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
+
+    qemu_fdt_add_subnode(fdt, "/aliases");
+    qemu_fdt_setprop_string(fdt, "/aliases", "ethernet0", nodename);
+
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/ethernet@%lx/ethernet-phy@0",
+        (long)memmap[SIFIVE_U_DEV_GEM].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_cell(fdt, nodename, "phandle", phy_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "reg", 0x0);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/pwm@%lx",
+        (long)memmap[SIFIVE_U_DEV_PWM0].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0");
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_PWM0].base,
+        0x0, memmap[SIFIVE_U_DEV_PWM0].size);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
+                           SIFIVE_U_PWM0_IRQ0, SIFIVE_U_PWM0_IRQ1,
+                           SIFIVE_U_PWM0_IRQ2, SIFIVE_U_PWM0_IRQ3);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+                           prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/pwm@%lx",
+        (long)memmap[SIFIVE_U_DEV_PWM1].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,pwm0");
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_PWM1].base,
+        0x0, memmap[SIFIVE_U_DEV_PWM1].size);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cells(fdt, nodename, "interrupts",
+                           SIFIVE_U_PWM1_IRQ0, SIFIVE_U_PWM1_IRQ1,
+                           SIFIVE_U_PWM1_IRQ2, SIFIVE_U_PWM1_IRQ3);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+                           prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "#pwm-cells", 0);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/serial@%lx",
+        (long)memmap[SIFIVE_U_DEV_UART1].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_UART1].base,
+        0x0, memmap[SIFIVE_U_DEV_UART1].size);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART1_IRQ);
+
+    qemu_fdt_setprop_string(fdt, "/aliases", "serial1", nodename);
+    g_free(nodename);
+
+    nodename = g_strdup_printf("/soc/serial@%lx",
+        (long)memmap[SIFIVE_U_DEV_UART0].base);
+    qemu_fdt_add_subnode(fdt, nodename);
+    qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
+    qemu_fdt_setprop_cells(fdt, nodename, "reg",
+        0x0, memmap[SIFIVE_U_DEV_UART0].base,
+        0x0, memmap[SIFIVE_U_DEV_UART0].size);
+    qemu_fdt_setprop_cells(fdt, nodename, "clocks",
+        prci_phandle, PRCI_CLK_TLCLK);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
+    qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART0_IRQ);
+
+    qemu_fdt_add_subnode(fdt, "/chosen");
+    qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
+    qemu_fdt_setprop_string(fdt, "/aliases", "serial0", nodename);
+
+    g_free(nodename);
+
+update_bootargs:
+    if (cmdline) {
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    }
+}
+
+static void sifive_u_machine_reset(void *opaque, int n, int level)
+{
+    /* gpio pin active low triggers reset */
+    if (!level) {
+        qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+    }
+}
+
+static void sifive_u_machine_init(MachineState *machine)
+{
+    const MemMapEntry *memmap = sifive_u_memmap;
+    SiFiveUState *s = RISCV_U_MACHINE(machine);
+    MemoryRegion *system_memory = get_system_memory();
+    MemoryRegion *flash0 = g_new(MemoryRegion, 1);
+    target_ulong start_addr = memmap[SIFIVE_U_DEV_DRAM].base;
+    target_ulong firmware_end_addr, kernel_start_addr;
+    uint32_t start_addr_hi32 = 0x00000000;
+    int i;
+    uint32_t fdt_load_addr;
+    uint64_t kernel_entry;
+    DriveInfo *dinfo;
+    DeviceState *flash_dev, *sd_dev;
+    qemu_irq flash_cs, sd_cs;
+
+    /* Initialize SoC */
+    object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_RISCV_U_SOC);
+    object_property_set_uint(OBJECT(&s->soc), "serial", s->serial,
+                             &error_abort);
+    object_property_set_str(OBJECT(&s->soc), "cpu-type", machine->cpu_type,
+                             &error_abort);
+    qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
+
+    /* register RAM */
+    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_DRAM].base,
+                                machine->ram);
+
+    /* register QSPI0 Flash */
+    memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
+                           memmap[SIFIVE_U_DEV_FLASH0].size, &error_fatal);
+    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_FLASH0].base,
+                                flash0);
+
+    /* register gpio-restart */
+    qdev_connect_gpio_out(DEVICE(&(s->soc.gpio)), 10,
+                          qemu_allocate_irq(sifive_u_machine_reset, NULL, 0));
+
+    /* create device tree */
+    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
+               riscv_is_32bit(&s->soc.u_cpus));
+
+    if (s->start_in_flash) {
+        /*
+         * If start_in_flash property is given, assign s->msel to a value
+         * that representing booting from QSPI0 memory-mapped flash.
+         *
+         * This also means that when both start_in_flash and msel properties
+         * are given, start_in_flash takes the precedence over msel.
+         *
+         * Note this is to keep backward compatibility not to break existing
+         * users that use start_in_flash property.
+         */
+        s->msel = MSEL_MEMMAP_QSPI0_FLASH;
+    }
+
+    switch (s->msel) {
+    case MSEL_MEMMAP_QSPI0_FLASH:
+        start_addr = memmap[SIFIVE_U_DEV_FLASH0].base;
+        break;
+    case MSEL_L2LIM_QSPI0_FLASH:
+    case MSEL_L2LIM_QSPI2_SD:
+        start_addr = memmap[SIFIVE_U_DEV_L2LIM].base;
+        break;
+    default:
+        start_addr = memmap[SIFIVE_U_DEV_DRAM].base;
+        break;
+    }
+
+    if (riscv_is_32bit(&s->soc.u_cpus)) {
+        firmware_end_addr = riscv_find_and_load_firmware(machine,
+                                    RISCV32_BIOS_BIN, start_addr, NULL);
+    } else {
+        firmware_end_addr = riscv_find_and_load_firmware(machine,
+                                    RISCV64_BIOS_BIN, start_addr, NULL);
+    }
+
+    if (machine->kernel_filename) {
+        kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
+                                                         firmware_end_addr);
+
+        kernel_entry = riscv_load_kernel(machine->kernel_filename,
+                                         kernel_start_addr, NULL);
+
+        if (machine->initrd_filename) {
+            hwaddr start;
+            hwaddr end = riscv_load_initrd(machine->initrd_filename,
+                                           machine->ram_size, kernel_entry,
+                                           &start);
+            qemu_fdt_setprop_cell(s->fdt, "/chosen",
+                                  "linux,initrd-start", start);
+            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
+                                  end);
+        }
+    } else {
+       /*
+        * If dynamic firmware is used, it doesn't know where is the next mode
+        * if kernel argument is not set.
+        */
+        kernel_entry = 0;
+    }
+
+    /* Compute the fdt load address in dram */
+    fdt_load_addr = riscv_load_fdt(memmap[SIFIVE_U_DEV_DRAM].base,
+                                   machine->ram_size, s->fdt);
+    if (!riscv_is_32bit(&s->soc.u_cpus)) {
+        start_addr_hi32 = (uint64_t)start_addr >> 32;
+    }
+
+    /* reset vector */
+    uint32_t reset_vec[12] = {
+        s->msel,                       /* MSEL pin state */
+        0x00000297,                    /* 1:  auipc  t0, %pcrel_hi(fw_dyn) */
+        0x02c28613,                    /*     addi   a2, t0, %pcrel_lo(1b) */
+        0xf1402573,                    /*     csrr   a0, mhartid  */
+        0,
+        0,
+        0x00028067,                    /*     jr     t0 */
+        start_addr,                    /* start: .dword */
+        start_addr_hi32,
+        fdt_load_addr,                 /* fdt_laddr: .dword */
+        0x00000000,
+        0x00000000,
+                                       /* fw_dyn: */
+    };
+    if (riscv_is_32bit(&s->soc.u_cpus)) {
+        reset_vec[4] = 0x0202a583;     /*     lw     a1, 32(t0) */
+        reset_vec[5] = 0x0182a283;     /*     lw     t0, 24(t0) */
+    } else {
+        reset_vec[4] = 0x0202b583;     /*     ld     a1, 32(t0) */
+        reset_vec[5] = 0x0182b283;     /*     ld     t0, 24(t0) */
+    }
+
+
+    /* copy in the reset vector in little_endian byte order */
+    for (i = 0; i < ARRAY_SIZE(reset_vec); i++) {
+        reset_vec[i] = cpu_to_le32(reset_vec[i]);
+    }
+    rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec),
+                          memmap[SIFIVE_U_DEV_MROM].base, &address_space_memory);
+
+    riscv_rom_copy_firmware_info(machine, memmap[SIFIVE_U_DEV_MROM].base,
+                                 memmap[SIFIVE_U_DEV_MROM].size,
+                                 sizeof(reset_vec), kernel_entry);
+
+    /* Connect an SPI flash to SPI0 */
+    flash_dev = qdev_new("is25wp256");
+    dinfo = drive_get_next(IF_MTD);
+    if (dinfo) {
+        qdev_prop_set_drive_err(flash_dev, "drive",
+                                blk_by_legacy_dinfo(dinfo),
+                                &error_fatal);
+    }
+    qdev_realize_and_unref(flash_dev, BUS(s->soc.spi0.spi), &error_fatal);
+
+    flash_cs = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi0), 1, flash_cs);
+
+    /* Connect an SD card to SPI2 */
+    sd_dev = ssi_create_peripheral(s->soc.spi2.spi, "ssi-sd");
+
+    sd_cs = qdev_get_gpio_in_named(sd_dev, SSI_GPIO_CS, 0);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->soc.spi2), 1, sd_cs);
+}
+
+static bool sifive_u_machine_get_start_in_flash(Object *obj, Error **errp)
+{
+    SiFiveUState *s = RISCV_U_MACHINE(obj);
+
+    return s->start_in_flash;
+}
+
+static void sifive_u_machine_set_start_in_flash(Object *obj, bool value, Error **errp)
+{
+    SiFiveUState *s = RISCV_U_MACHINE(obj);
+
+    s->start_in_flash = value;
+}
+
+static void sifive_u_machine_get_uint32_prop(Object *obj, Visitor *v,
+                                             const char *name, void *opaque,
+                                             Error **errp)
+{
+    visit_type_uint32(v, name, (uint32_t *)opaque, errp);
+}
+
+static void sifive_u_machine_set_uint32_prop(Object *obj, Visitor *v,
+                                             const char *name, void *opaque,
+                                             Error **errp)
+{
+    visit_type_uint32(v, name, (uint32_t *)opaque, errp);
+}
+
+static void sifive_u_machine_instance_init(Object *obj)
+{
+    SiFiveUState *s = RISCV_U_MACHINE(obj);
+
+    s->start_in_flash = false;
+    s->msel = 0;
+    object_property_add(obj, "msel", "uint32",
+                        sifive_u_machine_get_uint32_prop,
+                        sifive_u_machine_set_uint32_prop, NULL, &s->msel);
+    object_property_set_description(obj, "msel",
+                                    "Mode Select (MSEL[3:0]) pin state");
+
+    s->serial = OTP_SERIAL;
+    object_property_add(obj, "serial", "uint32",
+                        sifive_u_machine_get_uint32_prop,
+                        sifive_u_machine_set_uint32_prop, NULL, &s->serial);
+    object_property_set_description(obj, "serial", "Board serial number");
+}
+
+static void sifive_u_machine_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+
+    mc->desc = "RISC-V Board compatible with SiFive U SDK";
+    mc->init = sifive_u_machine_init;
+    mc->max_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + SIFIVE_U_COMPUTE_CPU_COUNT;
+    mc->min_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + 1;
+    mc->default_cpu_type = SIFIVE_U_CPU;
+    mc->default_cpus = mc->min_cpus;
+    mc->default_ram_id = "riscv.sifive.u.ram";
+
+    object_class_property_add_bool(oc, "start-in-flash",
+                                   sifive_u_machine_get_start_in_flash,
+                                   sifive_u_machine_set_start_in_flash);
+    object_class_property_set_description(oc, "start-in-flash",
+                                          "Set on to tell QEMU's ROM to jump to "
+                                          "flash. Otherwise QEMU will jump to DRAM "
+                                          "or L2LIM depending on the msel value");
+}
+
+static const TypeInfo sifive_u_machine_typeinfo = {
+    .name       = MACHINE_TYPE_NAME("sifive_u"),
+    .parent     = TYPE_MACHINE,
+    .class_init = sifive_u_machine_class_init,
+    .instance_init = sifive_u_machine_instance_init,
+    .instance_size = sizeof(SiFiveUState),
+};
+
+static void sifive_u_machine_init_register_types(void)
+{
+    type_register_static(&sifive_u_machine_typeinfo);
+}
+
+type_init(sifive_u_machine_init_register_types)
+
+static void sifive_u_soc_instance_init(Object *obj)
+{
+    SiFiveUSoCState *s = RISCV_U_SOC(obj);
+
+    object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER);
+    qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0);
+
+    object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus,
+                            TYPE_RISCV_HART_ARRAY);
+    qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1);
+    qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0);
+    qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU);
+    qdev_prop_set_uint64(DEVICE(&s->e_cpus), "resetvec", 0x1004);
+
+    object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
+    qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
+
+    object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus,
+                            TYPE_RISCV_HART_ARRAY);
+
+    object_initialize_child(obj, "prci", &s->prci, TYPE_SIFIVE_U_PRCI);
+    object_initialize_child(obj, "otp", &s->otp, TYPE_SIFIVE_U_OTP);
+    object_initialize_child(obj, "gem", &s->gem, TYPE_CADENCE_GEM);
+    object_initialize_child(obj, "gpio", &s->gpio, TYPE_SIFIVE_GPIO);
+    object_initialize_child(obj, "pdma", &s->dma, TYPE_SIFIVE_PDMA);
+    object_initialize_child(obj, "spi0", &s->spi0, TYPE_SIFIVE_SPI);
+    object_initialize_child(obj, "spi2", &s->spi2, TYPE_SIFIVE_SPI);
+    object_initialize_child(obj, "pwm0", &s->pwm[0], TYPE_SIFIVE_PWM);
+    object_initialize_child(obj, "pwm1", &s->pwm[1], TYPE_SIFIVE_PWM);
+}
+
+static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
+{
+    MachineState *ms = MACHINE(qdev_get_machine());
+    SiFiveUSoCState *s = RISCV_U_SOC(dev);
+    const MemMapEntry *memmap = sifive_u_memmap;
+    MemoryRegion *system_memory = get_system_memory();
+    MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
+    MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
+    char *plic_hart_config;
+    int i, j;
+    NICInfo *nd = &nd_table[0];
+
+    qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
+    qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
+    qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", s->cpu_type);
+    qdev_prop_set_uint64(DEVICE(&s->u_cpus), "resetvec", 0x1004);
+
+    sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_abort);
+    sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &error_abort);
+    /*
+     * The cluster must be realized after the RISC-V hart array container,
+     * as the container's CPU object is only created on realize, and the
+     * CPU must exist and have been parented into the cluster before the
+     * cluster is realized.
+     */
+    qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort);
+    qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort);
+
+    /* boot rom */
+    memory_region_init_rom(mask_rom, OBJECT(dev), "riscv.sifive.u.mrom",
+                           memmap[SIFIVE_U_DEV_MROM].size, &error_fatal);
+    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_MROM].base,
+                                mask_rom);
+
+    /*
+     * Add L2-LIM at reset size.
+     * This should be reduced in size as the L2 Cache Controller WayEnable
+     * register is incremented. Unfortunately I don't see a nice (or any) way
+     * to handle reducing or blocking out the L2 LIM while still allowing it
+     * be re returned to all enabled after a reset. For the time being, just
+     * leave it enabled all the time. This won't break anything, but will be
+     * too generous to misbehaving guests.
+     */
+    memory_region_init_ram(l2lim_mem, NULL, "riscv.sifive.u.l2lim",
+                           memmap[SIFIVE_U_DEV_L2LIM].size, &error_fatal);
+    memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DEV_L2LIM].base,
+                                l2lim_mem);
+
+    /* create PLIC hart topology configuration string */
+    plic_hart_config = riscv_plic_hart_config_string(ms->smp.cpus);
+
+    /* MMIO */
+    s->plic = sifive_plic_create(memmap[SIFIVE_U_DEV_PLIC].base,
+        plic_hart_config, ms->smp.cpus, 0,
+        SIFIVE_U_PLIC_NUM_SOURCES,
+        SIFIVE_U_PLIC_NUM_PRIORITIES,
+        SIFIVE_U_PLIC_PRIORITY_BASE,
+        SIFIVE_U_PLIC_PENDING_BASE,
+        SIFIVE_U_PLIC_ENABLE_BASE,
+        SIFIVE_U_PLIC_ENABLE_STRIDE,
+        SIFIVE_U_PLIC_CONTEXT_BASE,
+        SIFIVE_U_PLIC_CONTEXT_STRIDE,
+        memmap[SIFIVE_U_DEV_PLIC].size);
+    g_free(plic_hart_config);
+    sifive_uart_create(system_memory, memmap[SIFIVE_U_DEV_UART0].base,
+        serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ));
+    sifive_uart_create(system_memory, memmap[SIFIVE_U_DEV_UART1].base,
+        serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ));
+    riscv_aclint_swi_create(memmap[SIFIVE_U_DEV_CLINT].base, 0,
+        ms->smp.cpus, false);
+    riscv_aclint_mtimer_create(memmap[SIFIVE_U_DEV_CLINT].base +
+            RISCV_ACLINT_SWI_SIZE,
+        RISCV_ACLINT_DEFAULT_MTIMER_SIZE, 0, ms->smp.cpus,
+        RISCV_ACLINT_DEFAULT_MTIMECMP, RISCV_ACLINT_DEFAULT_MTIME,
+        CLINT_TIMEBASE_FREQ, false);
+
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) {
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_DEV_PRCI].base);
+
+    qdev_prop_set_uint32(DEVICE(&s->gpio), "ngpio", 16);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_U_DEV_GPIO].base);
+
+    /* Pass all GPIOs to the SOC layer so they are available to the board */
+    qdev_pass_gpios(DEVICE(&s->gpio), dev, NULL);
+
+    /* Connect GPIO interrupts to the PLIC */
+    for (i = 0; i < 16; i++) {
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), i,
+                           qdev_get_gpio_in(DEVICE(s->plic),
+                                            SIFIVE_U_GPIO_IRQ0 + i));
+    }
+
+    /* PDMA */
+    sysbus_realize(SYS_BUS_DEVICE(&s->dma), errp);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->dma), 0, memmap[SIFIVE_U_DEV_PDMA].base);
+
+    /* Connect PDMA interrupts to the PLIC */
+    for (i = 0; i < SIFIVE_PDMA_IRQS; i++) {
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), i,
+                           qdev_get_gpio_in(DEVICE(s->plic),
+                                            SIFIVE_U_PDMA_IRQ0 + i));
+    }
+
+    qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->otp), errp)) {
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_DEV_OTP].base);
+
+    /* FIXME use qdev NIC properties instead of nd_table[] */
+    if (nd->used) {
+        qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
+        qdev_set_nic_properties(DEVICE(&s->gem), nd);
+    }
+    object_property_set_int(OBJECT(&s->gem), "revision", GEM_REVISION,
+                            &error_abort);
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->gem), errp)) {
+        return;
+    }
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem), 0, memmap[SIFIVE_U_DEV_GEM].base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0,
+                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ));
+
+    /* PWM */
+    for (i = 0; i < 2; i++) {
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->pwm[i]), errp)) {
+            return;
+        }
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->pwm[i]), 0,
+                                memmap[SIFIVE_U_DEV_PWM0].base + (0x1000 * i));
+
+        /* Connect PWM interrupts to the PLIC */
+        for (j = 0; j < SIFIVE_PWM_IRQS; j++) {
+            sysbus_connect_irq(SYS_BUS_DEVICE(&s->pwm[i]), j,
+                               qdev_get_gpio_in(DEVICE(s->plic),
+                                        SIFIVE_U_PWM0_IRQ0 + (i * 4) + j));
+        }
+    }
+
+    create_unimplemented_device("riscv.sifive.u.gem-mgmt",
+        memmap[SIFIVE_U_DEV_GEM_MGMT].base, memmap[SIFIVE_U_DEV_GEM_MGMT].size);
+
+    create_unimplemented_device("riscv.sifive.u.dmc",
+        memmap[SIFIVE_U_DEV_DMC].base, memmap[SIFIVE_U_DEV_DMC].size);
+
+    create_unimplemented_device("riscv.sifive.u.l2cc",
+        memmap[SIFIVE_U_DEV_L2CC].base, memmap[SIFIVE_U_DEV_L2CC].size);
+
+    sysbus_realize(SYS_BUS_DEVICE(&s->spi0), errp);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi0), 0,
+                    memmap[SIFIVE_U_DEV_QSPI0].base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi0), 0,
+                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_QSPI0_IRQ));
+    sysbus_realize(SYS_BUS_DEVICE(&s->spi2), errp);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi2), 0,
+                    memmap[SIFIVE_U_DEV_QSPI2].base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->spi2), 0,
+                       qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_QSPI2_IRQ));
+}
+
+static Property sifive_u_soc_props[] = {
+    DEFINE_PROP_UINT32("serial", SiFiveUSoCState, serial, OTP_SERIAL),
+    DEFINE_PROP_STRING("cpu-type", SiFiveUSoCState, cpu_type),
+    DEFINE_PROP_END_OF_LIST()
+};
+
+static void sifive_u_soc_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+
+    device_class_set_props(dc, sifive_u_soc_props);
+    dc->realize = sifive_u_soc_realize;
+    /* Reason: Uses serial_hds in realize function, thus can't be used twice */
+    dc->user_creatable = false;
+}
+
+static const TypeInfo sifive_u_soc_type_info = {
+    .name = TYPE_RISCV_U_SOC,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(SiFiveUSoCState),
+    .instance_init = sifive_u_soc_instance_init,
+    .class_init = sifive_u_soc_class_init,
+};
+
+static void sifive_u_soc_register_types(void)
+{
+    type_register_static(&sifive_u_soc_type_info);
+}
+
+type_init(sifive_u_soc_register_types)