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hw/riscv/sifive_u: Create a SiFive U SoC object 

Create a SiFive Unleashed U54 SoC and use that in the sifive_u machine.

We leave the SoC, RAM, device tree and reset/fdt loading as part of the
machine. All the other device creation has been moved to the SoC.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Michael Clark <mjc@sifive.com>
This commit is contained in:
Alistair Francis 2018-04-26 11:15:24 -07:00
parent cee35138b5
commit 2308092b2b
2 changed files with 79 additions and 24 deletions
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87
hw/riscv/sifive_u.c
View File

@ -116,10 +116,10 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
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--) {
for (cpu = s->soc.cpus.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]);
char *isa = riscv_isa_string(&s->soc.cpus.harts[cpu]);
qemu_fdt_add_subnode(fdt, nodename);
qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
SIFIVE_U_CLOCK_FREQ);
@ -140,8 +140,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
g_free(nodename);
}
cells = g_new0(uint32_t, s->soc.num_harts * 4);
for (cpu = 0; cpu < s->soc.num_harts; cpu++) {
cells = g_new0(uint32_t, s->soc.cpus.num_harts * 4);
for (cpu = 0; cpu < s->soc.cpus.num_harts; cpu++) {
nodename =
g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
@ -159,12 +159,12 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
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);
cells, s->soc.cpus.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++) {
cells = g_new0(uint32_t, s->soc.cpus.num_harts * 4);
for (cpu = 0; cpu < s->soc.cpus.num_harts; cpu++) {
nodename =
g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
@ -181,7 +181,7 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
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);
cells, s->soc.cpus.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);
@ -217,17 +217,12 @@ static void riscv_sifive_u_init(MachineState *machine)
SiFiveUState *s = g_new0(SiFiveUState, 1);
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
int i;
/* Initialize SOC */
object_initialize(&s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY);
/* Initialize SoC */
object_initialize(&s->soc, sizeof(s->soc), TYPE_RISCV_U_SOC);
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);
@ -235,17 +230,11 @@ static void riscv_sifive_u_init(MachineState *machine)
memory_region_init_ram(main_mem, NULL, "riscv.sifive.u.ram",
machine->ram_size, &error_fatal);
memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DRAM].base,
main_mem);
main_mem);
/* create device tree */
create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
/* boot rom */
memory_region_init_rom(mask_rom, NULL, "riscv.sifive.u.mrom",
memmap[SIFIVE_U_MROM].size, &error_fatal);
memory_region_add_subregion(system_memory, memmap[SIFIVE_U_MROM].base,
mask_rom);
if (machine->kernel_filename) {
load_kernel(machine->kernel_filename);
}
@ -284,6 +273,36 @@ static void riscv_sifive_u_init(MachineState *machine)
rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt),
memmap[SIFIVE_U_MROM].base + sizeof(reset_vec),
&address_space_memory);
}
static void riscv_sifive_u_soc_init(Object *obj)
{
SiFiveUSoCState *s = RISCV_U_SOC(obj);
object_initialize(&s->cpus, sizeof(s->cpus), TYPE_RISCV_HART_ARRAY);
object_property_add_child(obj, "cpus", OBJECT(&s->cpus),
&error_abort);
object_property_set_str(OBJECT(&s->cpus), SIFIVE_U_CPU, "cpu-type",
&error_abort);
object_property_set_int(OBJECT(&s->cpus), smp_cpus, "num-harts",
&error_abort);
}
static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp)
{
SiFiveUSoCState *s = RISCV_U_SOC(dev);
const struct MemmapEntry *memmap = sifive_u_memmap;
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
object_property_set_bool(OBJECT(&s->cpus), true, "realized",
&error_abort);
/* boot rom */
memory_region_init_rom(mask_rom, NULL, "riscv.sifive.u.mrom",
memmap[SIFIVE_U_MROM].size, &error_fatal);
memory_region_add_subregion(system_memory, memmap[SIFIVE_U_MROM].base,
mask_rom);
/* MMIO */
s->plic = sifive_plic_create(memmap[SIFIVE_U_PLIC].base,
@ -314,3 +333,27 @@ static void riscv_sifive_u_machine_init(MachineClass *mc)
}
DEFINE_MACHINE("sifive_u", riscv_sifive_u_machine_init)
static void riscv_sifive_u_soc_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = riscv_sifive_u_soc_realize;
/* Reason: Uses serial_hds in realize function, thus can't be used twice */
dc->user_creatable = false;
}
static const TypeInfo riscv_sifive_u_soc_type_info = {
.name = TYPE_RISCV_U_SOC,
.parent = TYPE_DEVICE,
.instance_size = sizeof(SiFiveUSoCState),
.instance_init = riscv_sifive_u_soc_init,
.class_init = riscv_sifive_u_soc_class_init,
};
static void riscv_sifive_u_soc_register_types(void)
{
type_register_static(&riscv_sifive_u_soc_type_info);
}
type_init(riscv_sifive_u_soc_register_types)

16
include/hw/riscv/sifive_u.h
View File

@ -19,13 +19,25 @@
#ifndef HW_SIFIVE_U_H
#define HW_SIFIVE_U_H
#define TYPE_RISCV_U_SOC "riscv.sifive.u.soc"
#define RISCV_U_SOC(obj) \
OBJECT_CHECK(SiFiveUSoCState, (obj), TYPE_RISCV_U_SOC)
typedef struct SiFiveUSoCState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
RISCVHartArrayState cpus;
DeviceState *plic;
} SiFiveUSoCState;
typedef struct SiFiveUState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
RISCVHartArrayState soc;
DeviceState *plic;
SiFiveUSoCState soc;
void *fdt;
int fdt_size;
} SiFiveUState;