[mirror_qemu.git] / hw / riscv / sifive_u.c

/*
 * 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.
 *
 * Provides a board compatible with the SiFive Freedom U SDK:
 *
 * 0) UART
 * 1) CLINT (Core Level Interruptor)
 * 2) PLIC (Platform Level Interrupt Controller)
 *
 * This board currently uses a hardcoded devicetree that indicates one hart.
 *
 * 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/log.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "hw/char/serial.h"
#include "target/riscv/cpu.h"
#include "hw/riscv/riscv_hart.h"
#include "hw/riscv/sifive_plic.h"
#include "hw/riscv/sifive_clint.h"
#include "hw/riscv/sifive_uart.h"
#include "hw/riscv/sifive_prci.h"
#include "hw/riscv/sifive_u.h"
#include "chardev/char.h"
#include "sysemu/arch_init.h"
#include "sysemu/device_tree.h"
#include "exec/address-spaces.h"
#include "elf.h"

static const struct MemmapEntry {
    hwaddr base;
    hwaddr size;
} sifive_u_memmap[] = {
    [SIFIVE_U_DEBUG] =    {        0x0,      0x100 },
    [SIFIVE_U_MROM] =     {     0x1000,     0x2000 },
    [SIFIVE_U_CLINT] =    {  0x2000000,    0x10000 },
    [SIFIVE_U_PLIC] =     {  0xc000000,  0x4000000 },
    [SIFIVE_U_UART0] =    { 0x10013000,     0x1000 },
    [SIFIVE_U_UART1] =    { 0x10023000,     0x1000 },
    [SIFIVE_U_DRAM] =     { 0x80000000,        0x0 },
};

static void copy_le32_to_phys(hwaddr pa, uint32_t *rom, size_t len)
{
    int i;
    for (i = 0; i < (len >> 2); i++) {
        stl_phys(&address_space_memory, pa + (i << 2), rom[i]);
    }
}

static uint64_t identity_translate(void *opaque, uint64_t addr)
{
    return addr;
}

static uint64_t load_kernel(const char *kernel_filename)
{
    uint64_t kernel_entry, kernel_high;

    if (load_elf(kernel_filename, identity_translate, NULL,
                 &kernel_entry, NULL, &kernel_high,
                 0, ELF_MACHINE, 1, 0) < 0) {
        error_report("qemu: could not load kernel '%s'", kernel_filename);
        exit(1);
    }
    return kernel_entry;
}

static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
    uint64_t mem_size, const char *cmdline)
{
    void *fdt;
    int cpu;
    uint32_t *cells;
    char *nodename;
    uint32_t plic_phandle;

    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", "ucbbar,spike-bare,qemu");
    qemu_fdt_setprop_string(fdt, "/", "compatible", "ucbbar,spike-bare-dev");
    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", "ucbbar,spike-bare-soc");
    qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
    qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);

    nodename = g_strdup_printf("/memory@%lx",
        (long)memmap[SIFIVE_U_DRAM].base);
    qemu_fdt_add_subnode(fdt, nodename);
    qemu_fdt_setprop_cells(fdt, nodename, "reg",
        memmap[SIFIVE_U_DRAM].base >> 32, memmap[SIFIVE_U_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", 10000000);
    qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
    qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);

    for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) {
        nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
        char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
        char *isa = riscv_isa_string(&s->soc.harts[cpu]);
        qemu_fdt_add_subnode(fdt, nodename);
        qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 1000000000);
        qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
        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", 1);
        qemu_fdt_setprop_cell(fdt, intc, "linux,phandle", 1);
        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, s->soc.num_harts * 4);
    for (cpu = 0; cpu < s->soc.num_harts; 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_CLINT].base);
    qemu_fdt_add_subnode(fdt, nodename);
    qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0");
    qemu_fdt_setprop_cells(fdt, nodename, "reg",
        0x0, memmap[SIFIVE_U_CLINT].base,
        0x0, memmap[SIFIVE_U_CLINT].size);
    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
        cells, s->soc.num_harts * sizeof(uint32_t) * 4);
    g_free(cells);
    g_free(nodename);

    cells =  g_new0(uint32_t, s->soc.num_harts * 4);
    for (cpu = 0; cpu < s->soc.num_harts; 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_EXT);
        cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
        cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
        g_free(nodename);
    }
    nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
        (long)memmap[SIFIVE_U_PLIC].base);
    qemu_fdt_add_subnode(fdt, nodename);
    qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
    qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0");
    qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
    qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
        cells, s->soc.num_harts * sizeof(uint32_t) * 4);
    qemu_fdt_setprop_cells(fdt, nodename, "reg",
        0x0, memmap[SIFIVE_U_PLIC].base,
        0x0, memmap[SIFIVE_U_PLIC].size);
    qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
    qemu_fdt_setprop_cell(fdt, nodename, "riscv,max-priority", 7);
    qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 4);
    qemu_fdt_setprop_cells(fdt, nodename, "phandle", 2);
    qemu_fdt_setprop_cells(fdt, nodename, "linux,phandle", 2);
    plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
    g_free(cells);
    g_free(nodename);

    nodename = g_strdup_printf("/uart@%lx",
        (long)memmap[SIFIVE_U_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_UART0].base,
        0x0, memmap[SIFIVE_U_UART0].size);
    qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle);
    qemu_fdt_setprop_cells(fdt, nodename, "interrupts", 1);

    qemu_fdt_add_subnode(fdt, "/chosen");
    qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
    qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
    g_free(nodename);
}

static void riscv_sifive_u_init(MachineState *machine)
{
    const struct MemmapEntry *memmap = sifive_u_memmap;

    SiFiveUState *s = g_new0(SiFiveUState, 1);
    MemoryRegion *sys_memory = get_system_memory();
    MemoryRegion *main_mem = g_new(MemoryRegion, 1);
    MemoryRegion *boot_rom = g_new(MemoryRegion, 1);

    /* Initialize SOC */
    object_initialize(&s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY);
    object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
                              &error_abort);
    object_property_set_str(OBJECT(&s->soc), SIFIVE_U_CPU, "cpu-type",
                            &error_abort);
    object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts",
                            &error_abort);
    object_property_set_bool(OBJECT(&s->soc), true, "realized",
                            &error_abort);

    /* register RAM */
    memory_region_init_ram(main_mem, NULL, "riscv.sifive.u.ram",
                           machine->ram_size, &error_fatal);
    memory_region_add_subregion(sys_memory, memmap[SIFIVE_U_DRAM].base,
        main_mem);

    /* create device tree */
    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);

    /* boot rom */
    memory_region_init_ram(boot_rom, NULL, "riscv.sifive.u.mrom",
                           memmap[SIFIVE_U_MROM].base, &error_fatal);
    memory_region_set_readonly(boot_rom, true);
    memory_region_add_subregion(sys_memory, 0x0, boot_rom);

    if (machine->kernel_filename) {
        load_kernel(machine->kernel_filename);
    }

    /* reset vector */
    uint32_t reset_vec[8] = {
        0x00000297,                    /* 1:  auipc  t0, %pcrel_hi(dtb) */
        0x02028593,                    /*     addi   a1, t0, %pcrel_lo(1b) */
        0xf1402573,                    /*     csrr   a0, mhartid  */
#if defined(TARGET_RISCV32)
        0x0182a283,                    /*     lw     t0, 24(t0) */
#elif defined(TARGET_RISCV64)
        0x0182b283,                    /*     ld     t0, 24(t0) */
#endif
        0x00028067,                    /*     jr     t0 */
        0x00000000,
        memmap[SIFIVE_U_DRAM].base, /* start: .dword DRAM_BASE */
        0x00000000,
                                       /* dtb: */
    };

    /* copy in the reset vector */
    copy_le32_to_phys(memmap[SIFIVE_U_MROM].base, reset_vec, sizeof(reset_vec));

    /* copy in the device tree */
    qemu_fdt_dumpdtb(s->fdt, s->fdt_size);
    cpu_physical_memory_write(memmap[SIFIVE_U_MROM].base +
        sizeof(reset_vec), s->fdt, s->fdt_size);

    /* MMIO */
    s->plic = sifive_plic_create(memmap[SIFIVE_U_PLIC].base,
        (char *)SIFIVE_U_PLIC_HART_CONFIG,
        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_PLIC].size);
    sifive_uart_create(sys_memory, memmap[SIFIVE_U_UART0].base,
        serial_hd(0), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_U_UART0_IRQ]);
    /* sifive_uart_create(sys_memory, memmap[SIFIVE_U_UART1].base,
        serial_hd(1), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_U_UART1_IRQ]); */
    sifive_clint_create(memmap[SIFIVE_U_CLINT].base,
        memmap[SIFIVE_U_CLINT].size, smp_cpus,
        SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE);
}

static int riscv_sifive_u_sysbus_device_init(SysBusDevice *sysbusdev)
{
    return 0;
}

static void riscv_sifive_u_class_init(ObjectClass *klass, void *data)
{
    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
    k->init = riscv_sifive_u_sysbus_device_init;
}

static const TypeInfo riscv_sifive_u_device = {
    .name          = TYPE_SIFIVE_U,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(SiFiveUState),
    .class_init    = riscv_sifive_u_class_init,
};

static void riscv_sifive_u_register_types(void)
{
    type_register_static(&riscv_sifive_u_device);
}

type_init(riscv_sifive_u_register_types);

static void riscv_sifive_u_machine_init(MachineClass *mc)
{
    mc->desc = "RISC-V Board compatible with SiFive U SDK";
    mc->init = riscv_sifive_u_init;
    mc->max_cpus = 1;
}

DEFINE_MACHINE("sifive_u", riscv_sifive_u_machine_init)
Commit	Line	Data
a7240d1e MC	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	*
	7	* Provides a board compatible with the SiFive Freedom U SDK:
	8	*
	9	* 0) UART
	10	* 1) CLINT (Core Level Interruptor)
	11	* 2) PLIC (Platform Level Interrupt Controller)
	12	*
	13	* This board currently uses a hardcoded devicetree that indicates one hart.
	14	*
	15	* This program is free software; you can redistribute it and/or modify it
	16	* under the terms and conditions of the GNU General Public License,
	17	* version 2 or later, as published by the Free Software Foundation.
	18	*
	19	* This program is distributed in the hope it will be useful, but WITHOUT
	20	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	21	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	22	* more details.
	23	*
	24	* You should have received a copy of the GNU General Public License along with
	25	* this program. If not, see <http://www.gnu.org/licenses/>.
	26	*/
	27
	28	#include "qemu/osdep.h"
	29	#include "qemu/log.h"
	30	#include "qemu/error-report.h"
	31	#include "qapi/error.h"
	32	#include "hw/hw.h"
	33	#include "hw/boards.h"
	34	#include "hw/loader.h"
	35	#include "hw/sysbus.h"
	36	#include "hw/char/serial.h"
	37	#include "target/riscv/cpu.h"
	38	#include "hw/riscv/riscv_hart.h"
	39	#include "hw/riscv/sifive_plic.h"
	40	#include "hw/riscv/sifive_clint.h"
	41	#include "hw/riscv/sifive_uart.h"
	42	#include "hw/riscv/sifive_prci.h"
	43	#include "hw/riscv/sifive_u.h"
	44	#include "chardev/char.h"
	45	#include "sysemu/arch_init.h"
	46	#include "sysemu/device_tree.h"
	47	#include "exec/address-spaces.h"
	48	#include "elf.h"
	49
	50	static const struct MemmapEntry {
	51	hwaddr base;
	52	hwaddr size;
	53	} sifive_u_memmap[] = {
	54	[SIFIVE_U_DEBUG] = { 0x0, 0x100 },
	55	[SIFIVE_U_MROM] = { 0x1000, 0x2000 },
	56	[SIFIVE_U_CLINT] = { 0x2000000, 0x10000 },
	57	[SIFIVE_U_PLIC] = { 0xc000000, 0x4000000 },
	58	[SIFIVE_U_UART0] = { 0x10013000, 0x1000 },
	59	[SIFIVE_U_UART1] = { 0x10023000, 0x1000 },
	60	[SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
	61	};
	62
	63	static void copy_le32_to_phys(hwaddr pa, uint32_t *rom, size_t len)
	64	{
65	int i;
66	for (i = 0; i < (len >> 2); i++) {
67	stl_phys(&address_space_memory, pa + (i << 2), rom[i]);
68	}
69	}
70
71	static uint64_t identity_translate(void *opaque, uint64_t addr)
72	{
73	return addr;
74	}
75
76	static uint64_t load_kernel(const char *kernel_filename)
77	{
78	uint64_t kernel_entry, kernel_high;
79
80	if (load_elf(kernel_filename, identity_translate, NULL,
81	&kernel_entry, NULL, &kernel_high,
82	0, ELF_MACHINE, 1, 0) < 0) {
83	error_report("qemu: could not load kernel '%s'", kernel_filename);
84	exit(1);
85	}
86	return kernel_entry;
87	}
88
89	static void create_fdt(SiFiveUState s, const struct MemmapEntry memmap,
90	uint64_t mem_size, const char *cmdline)
91	{
92	void *fdt;
93	int cpu;
94	uint32_t *cells;
95	char *nodename;
96	uint32_t plic_phandle;
97
98	fdt = s->fdt = create_device_tree(&s->fdt_size);
99	if (!fdt) {
100	error_report("create_device_tree() failed");
101	exit(1);
102	}
103
104	qemu_fdt_setprop_string(fdt, "/", "model", "ucbbar,spike-bare,qemu");
105	qemu_fdt_setprop_string(fdt, "/", "compatible", "ucbbar,spike-bare-dev");
106	qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
107	qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
108
109	qemu_fdt_add_subnode(fdt, "/soc");
110	qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
111	qemu_fdt_setprop_string(fdt, "/soc", "compatible", "ucbbar,spike-bare-soc");
112	qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
113	qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
114
115	nodename = g_strdup_printf("/memory@%lx",
116	(long)memmap[SIFIVE_U_DRAM].base);
117	qemu_fdt_add_subnode(fdt, nodename);
118	qemu_fdt_setprop_cells(fdt, nodename, "reg",
119	memmap[SIFIVE_U_DRAM].base >> 32, memmap[SIFIVE_U_DRAM].base,
120	mem_size >> 32, mem_size);
121	qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
122	g_free(nodename);
123
124	qemu_fdt_add_subnode(fdt, "/cpus");
125	qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", 10000000);
126	qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
127	qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
128
129	for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) {
130	nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
131	char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
132	char *isa = riscv_isa_string(&s->soc.harts[cpu]);
133	qemu_fdt_add_subnode(fdt, nodename);
134	qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 1000000000);
135	qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
136	qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
137	qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
138	qemu_fdt_setprop_string(fdt, nodename, "status", "okay");
139	qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu);
140	qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu");
141	qemu_fdt_add_subnode(fdt, intc);
142	qemu_fdt_setprop_cell(fdt, intc, "phandle", 1);
143	qemu_fdt_setprop_cell(fdt, intc, "linux,phandle", 1);
144	qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc");
145	qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0);
146	qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1);
147	g_free(isa);
148	g_free(intc);
149	g_free(nodename);
150	}
151
152	cells = g_new0(uint32_t, s->soc.num_harts * 4);
153	for (cpu = 0; cpu < s->soc.num_harts; cpu++) {
154	nodename =
155	g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
156	uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
157	cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
158	cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
159	cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
160	cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
161	g_free(nodename);
162	}
163	nodename = g_strdup_printf("/soc/clint@%lx",
164	(long)memmap[SIFIVE_U_CLINT].base);
165	qemu_fdt_add_subnode(fdt, nodename);
166	qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0");
167	qemu_fdt_setprop_cells(fdt, nodename, "reg",
168	0x0, memmap[SIFIVE_U_CLINT].base,
169	0x0, memmap[SIFIVE_U_CLINT].size);
170	qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
171	cells, s->soc.num_harts * sizeof(uint32_t) * 4);
172	g_free(cells);
173	g_free(nodename);
174
175	cells = g_new0(uint32_t, s->soc.num_harts * 4);
176	for (cpu = 0; cpu < s->soc.num_harts; cpu++) {
177	nodename =
178	g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
179	uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
180	cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
181	cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT);
182	cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
183	cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT);
184	g_free(nodename);
185	}
186	nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
187	(long)memmap[SIFIVE_U_PLIC].base);
188	qemu_fdt_add_subnode(fdt, nodename);
189	qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
190	qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0");
191	qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
192	qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
193	cells, s->soc.num_harts * sizeof(uint32_t) * 4);
194	qemu_fdt_setprop_cells(fdt, nodename, "reg",
195	0x0, memmap[SIFIVE_U_PLIC].base,
196	0x0, memmap[SIFIVE_U_PLIC].size);
197	qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
198	qemu_fdt_setprop_cell(fdt, nodename, "riscv,max-priority", 7);
199	qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 4);
200	qemu_fdt_setprop_cells(fdt, nodename, "phandle", 2);
201	qemu_fdt_setprop_cells(fdt, nodename, "linux,phandle", 2);
202	plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
203	g_free(cells);
204	g_free(nodename);
205
206	nodename = g_strdup_printf("/uart@%lx",
207	(long)memmap[SIFIVE_U_UART0].base);
208	qemu_fdt_add_subnode(fdt, nodename);
209	qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
210	qemu_fdt_setprop_cells(fdt, nodename, "reg",
211	0x0, memmap[SIFIVE_U_UART0].base,
212	0x0, memmap[SIFIVE_U_UART0].size);
213	qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle);
214	qemu_fdt_setprop_cells(fdt, nodename, "interrupts", 1);
215
216	qemu_fdt_add_subnode(fdt, "/chosen");
217	qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
218	qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
219	g_free(nodename);
220	}
221
222	static void riscv_sifive_u_init(MachineState *machine)
223	{
224	const struct MemmapEntry *memmap = sifive_u_memmap;
225
226	SiFiveUState *s = g_new0(SiFiveUState, 1);
227	MemoryRegion *sys_memory = get_system_memory();
228	MemoryRegion *main_mem = g_new(MemoryRegion, 1);
229	MemoryRegion *boot_rom = g_new(MemoryRegion, 1);
230
231	/* Initialize SOC */
232	object_initialize(&s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY);
233	object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
234	&error_abort);
235	object_property_set_str(OBJECT(&s->soc), SIFIVE_U_CPU, "cpu-type",
236	&error_abort);
237	object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts",
238	&error_abort);
239	object_property_set_bool(OBJECT(&s->soc), true, "realized",
240	&error_abort);
241
242	/* register RAM */
243	memory_region_init_ram(main_mem, NULL, "riscv.sifive.u.ram",
244	machine->ram_size, &error_fatal);
245	memory_region_add_subregion(sys_memory, memmap[SIFIVE_U_DRAM].base,
246	main_mem);
247
248	/* create device tree */
249	create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
250
251	/* boot rom */
252	memory_region_init_ram(boot_rom, NULL, "riscv.sifive.u.mrom",
253	memmap[SIFIVE_U_MROM].base, &error_fatal);
254	memory_region_set_readonly(boot_rom, true);
255	memory_region_add_subregion(sys_memory, 0x0, boot_rom);
256
257	if (machine->kernel_filename) {
258	load_kernel(machine->kernel_filename);
259	}
260
261	/* reset vector */
262	uint32_t reset_vec[8] = {
263	0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */
264	0x02028593, /* addi a1, t0, %pcrel_lo(1b) */
265	0xf1402573, /* csrr a0, mhartid */
266	#if defined(TARGET_RISCV32)
267	0x0182a283, /* lw t0, 24(t0) */
268	#elif defined(TARGET_RISCV64)
269	0x0182b283, /* ld t0, 24(t0) */
270	#endif
271	0x00028067, /* jr t0 */
272	0x00000000,
273	memmap[SIFIVE_U_DRAM].base, /* start: .dword DRAM_BASE */
274	0x00000000,
275	/* dtb: */
276	};
277
278	/* copy in the reset vector */
279	copy_le32_to_phys(memmap[SIFIVE_U_MROM].base, reset_vec, sizeof(reset_vec));
280
281	/* copy in the device tree */
282	qemu_fdt_dumpdtb(s->fdt, s->fdt_size);
283	cpu_physical_memory_write(memmap[SIFIVE_U_MROM].base +
284	sizeof(reset_vec), s->fdt, s->fdt_size);
285
286	/* MMIO */
287	s->plic = sifive_plic_create(memmap[SIFIVE_U_PLIC].base,
288	(char *)SIFIVE_U_PLIC_HART_CONFIG,
289	SIFIVE_U_PLIC_NUM_SOURCES,
290	SIFIVE_U_PLIC_NUM_PRIORITIES,
291	SIFIVE_U_PLIC_PRIORITY_BASE,
292	SIFIVE_U_PLIC_PENDING_BASE,
293	SIFIVE_U_PLIC_ENABLE_BASE,
294	SIFIVE_U_PLIC_ENABLE_STRIDE,
295	SIFIVE_U_PLIC_CONTEXT_BASE,
296	SIFIVE_U_PLIC_CONTEXT_STRIDE,
297	memmap[SIFIVE_U_PLIC].size);
298	sifive_uart_create(sys_memory, memmap[SIFIVE_U_UART0].base,
9bca0edb	299	serial_hd(0), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_U_UART0_IRQ]);
a7240d1e	300	/* sifive_uart_create(sys_memory, memmap[SIFIVE_U_UART1].base,
9bca0edb	301	serial_hd(1), SIFIVE_PLIC(s->plic)->irqs[SIFIVE_U_UART1_IRQ]); */
a7240d1e MC	302	sifive_clint_create(memmap[SIFIVE_U_CLINT].base,
	303	memmap[SIFIVE_U_CLINT].size, smp_cpus,
	304	SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE);
	305	}
	306
	307	static int riscv_sifive_u_sysbus_device_init(SysBusDevice *sysbusdev)
	308	{
	309	return 0;
	310	}
	311
	312	static void riscv_sifive_u_class_init(ObjectClass klass, void data)
	313	{
	314	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	315	k->init = riscv_sifive_u_sysbus_device_init;
	316	}
	317
	318	static const TypeInfo riscv_sifive_u_device = {
	319	.name = TYPE_SIFIVE_U,
	320	.parent = TYPE_SYS_BUS_DEVICE,
	321	.instance_size = sizeof(SiFiveUState),
	322	.class_init = riscv_sifive_u_class_init,
	323	};
	324
	325	static void riscv_sifive_u_register_types(void)
	326	{
	327	type_register_static(&riscv_sifive_u_device);
	328	}
	329
	330	type_init(riscv_sifive_u_register_types);
	331
	332	static void riscv_sifive_u_machine_init(MachineClass *mc)
	333	{
	334	mc->desc = "RISC-V Board compatible with SiFive U SDK";
	335	mc->init = riscv_sifive_u_init;
	336	mc->max_cpus = 1;
	337	}
	338
	339	DEFINE_MACHINE("sifive_u", riscv_sifive_u_machine_init)