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riscv: Initial commit of OpenTitan machine

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This adds a barebone OpenTitan machine to QEMU.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
This commit is contained in:
Alistair Francis 2020-04-23 11:30:50 -07:00
parent 36b80ad99f
commit fe0fe4735e
7 changed files with 278 additions and 1 deletions
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9
MAINTAINERS
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@ -1238,6 +1238,15 @@ F: pc-bios/canyonlands.dt[sb]
F: pc-bios/u-boot-sam460ex-20100605.bin
F: roms/u-boot-sam460ex
RISC-V Machines
---------------
OpenTitan
M: Alistair Francis <Alistair.Francis@wdc.com>
L: qemu-riscv@nongnu.org
S: Supported
F: hw/riscv/opentitan.c
F: include/hw/riscv/opentitan.h
SH4 Machines
------------
R2D

1
default-configs/riscv32-softmmu.mak
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@ -10,3 +10,4 @@ CONFIG_SPIKE=y
CONFIG_SIFIVE_E=y
CONFIG_SIFIVE_U=y
CONFIG_RISCV_VIRT=y
CONFIG_OPENTITAN=y

11
default-configs/riscv64-softmmu.mak
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@ -1,3 +1,12 @@
# Default configuration for riscv64-softmmu
include riscv32-softmmu.mak
# Uncomment the following lines to disable these optional devices:
#
#CONFIG_PCI_DEVICES=n
# Boards:
#
CONFIG_SPIKE=y
CONFIG_SIFIVE_E=y
CONFIG_SIFIVE_U=y
CONFIG_RISCV_VIRT=y

5
hw/riscv/Kconfig
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@ -27,6 +27,11 @@ config SPIKE
select HTIF
select SIFIVE
config OPENTITAN
bool
select HART
select UNIMP
config RISCV_VIRT
bool
imply PCI_DEVICES

1
hw/riscv/Makefile.objs
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@ -1,6 +1,7 @@
obj-y += boot.o
obj-$(CONFIG_SPIKE) += riscv_htif.o
obj-$(CONFIG_HART) += riscv_hart.o
obj-$(CONFIG_OPENTITAN) += opentitan.o
obj-$(CONFIG_SIFIVE_E) += sifive_e.o
obj-$(CONFIG_SIFIVE_E) += sifive_e_prci.o
obj-$(CONFIG_SIFIVE) += sifive_clint.o

184
hw/riscv/opentitan.c Normal file
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@ -0,0 +1,184 @@
/*
* QEMU RISC-V Board Compatible with OpenTitan FPGA platform
*
* Copyright (c) 2020 Western Digital
*
* Provides a board compatible with the OpenTitan FPGA platform:
*
* 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 "hw/riscv/opentitan.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/misc/unimp.h"
#include "hw/riscv/boot.h"
#include "exec/address-spaces.h"
static const struct MemmapEntry {
hwaddr base;
hwaddr size;
} ibex_memmap[] = {
[IBEX_ROM] = { 0x00008000, 0xc000 },
[IBEX_RAM] = { 0x10000000, 0x10000 },
[IBEX_FLASH] = { 0x20000000, 0x80000 },
[IBEX_UART] = { 0x40000000, 0x10000 },
[IBEX_GPIO] = { 0x40010000, 0x10000 },
[IBEX_SPI] = { 0x40020000, 0x10000 },
[IBEX_FLASH_CTRL] = { 0x40030000, 0x10000 },
[IBEX_PINMUX] = { 0x40070000, 0x10000 },
[IBEX_RV_TIMER] = { 0x40080000, 0x10000 },
[IBEX_PLIC] = { 0x40090000, 0x10000 },
[IBEX_PWRMGR] = { 0x400A0000, 0x10000 },
[IBEX_RSTMGR] = { 0x400B0000, 0x10000 },
[IBEX_CLKMGR] = { 0x400C0000, 0x10000 },
[IBEX_AES] = { 0x40110000, 0x10000 },
[IBEX_HMAC] = { 0x40120000, 0x10000 },
[IBEX_ALERT_HANDLER] = { 0x40130000, 0x10000 },
[IBEX_NMI_GEN] = { 0x40140000, 0x10000 },
[IBEX_USBDEV] = { 0x40150000, 0x10000 },
[IBEX_PADCTRL] = { 0x40160000, 0x10000 }
};
static void riscv_opentitan_init(MachineState *machine)
{
const struct MemmapEntry *memmap = ibex_memmap;
OpenTitanState *s = g_new0(OpenTitanState, 1);
MemoryRegion *sys_mem = get_system_memory();
MemoryRegion *main_mem = g_new(MemoryRegion, 1);
/* Initialize SoC */
object_initialize_child(OBJECT(machine), "soc", &s->soc,
sizeof(s->soc), TYPE_RISCV_IBEX_SOC,
&error_abort, NULL);
object_property_set_bool(OBJECT(&s->soc), true, "realized",
&error_abort);
memory_region_init_ram(main_mem, NULL, "riscv.lowrisc.ibex.ram",
memmap[IBEX_RAM].size, &error_fatal);
memory_region_add_subregion(sys_mem,
memmap[IBEX_RAM].base, main_mem);
if (machine->firmware) {
riscv_load_firmware(machine->firmware, memmap[IBEX_RAM].base, NULL);
}
if (machine->kernel_filename) {
riscv_load_kernel(machine->kernel_filename, NULL);
}
}
static void riscv_opentitan_machine_init(MachineClass *mc)
{
mc->desc = "RISC-V Board compatible with OpenTitan";
mc->init = riscv_opentitan_init;
mc->max_cpus = 1;
mc->default_cpu_type = TYPE_RISCV_CPU_IBEX;
}
DEFINE_MACHINE("opentitan", riscv_opentitan_machine_init)
static void riscv_lowrisc_ibex_soc_init(Object *obj)
{
LowRISCIbexSoCState *s = RISCV_IBEX_SOC(obj);
object_initialize_child(obj, "cpus", &s->cpus,
sizeof(s->cpus), TYPE_RISCV_HART_ARRAY,
&error_abort, NULL);
}
static void riscv_lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
{
const struct MemmapEntry *memmap = ibex_memmap;
MachineState *ms = MACHINE(qdev_get_machine());
LowRISCIbexSoCState *s = RISCV_IBEX_SOC(dev_soc);
MemoryRegion *sys_mem = get_system_memory();
object_property_set_str(OBJECT(&s->cpus), ms->cpu_type, "cpu-type",
&error_abort);
object_property_set_int(OBJECT(&s->cpus), ms->smp.cpus, "num-harts",
&error_abort);
object_property_set_bool(OBJECT(&s->cpus), true, "realized",
&error_abort);
/* Boot ROM */
memory_region_init_rom(&s->rom, OBJECT(dev_soc), "riscv.lowrisc.ibex.rom",
memmap[IBEX_ROM].size, &error_fatal);
memory_region_add_subregion(sys_mem,
memmap[IBEX_ROM].base, &s->rom);
/* Flash memory */
memory_region_init_rom(&s->flash_mem, OBJECT(dev_soc), "riscv.lowrisc.ibex.flash",
memmap[IBEX_FLASH].size, &error_fatal);
memory_region_add_subregion(sys_mem, memmap[IBEX_FLASH].base,
&s->flash_mem);
create_unimplemented_device("riscv.lowrisc.ibex.uart",
memmap[IBEX_UART].base, memmap[IBEX_UART].size);
create_unimplemented_device("riscv.lowrisc.ibex.gpio",
memmap[IBEX_GPIO].base, memmap[IBEX_GPIO].size);
create_unimplemented_device("riscv.lowrisc.ibex.spi",
memmap[IBEX_SPI].base, memmap[IBEX_SPI].size);
create_unimplemented_device("riscv.lowrisc.ibex.flash_ctrl",
memmap[IBEX_FLASH_CTRL].base, memmap[IBEX_FLASH_CTRL].size);
create_unimplemented_device("riscv.lowrisc.ibex.rv_timer",
memmap[IBEX_RV_TIMER].base, memmap[IBEX_RV_TIMER].size);
create_unimplemented_device("riscv.lowrisc.ibex.pwrmgr",
memmap[IBEX_PWRMGR].base, memmap[IBEX_PWRMGR].size);
create_unimplemented_device("riscv.lowrisc.ibex.rstmgr",
memmap[IBEX_RSTMGR].base, memmap[IBEX_RSTMGR].size);
create_unimplemented_device("riscv.lowrisc.ibex.clkmgr",
memmap[IBEX_CLKMGR].base, memmap[IBEX_CLKMGR].size);
create_unimplemented_device("riscv.lowrisc.ibex.aes",
memmap[IBEX_AES].base, memmap[IBEX_AES].size);
create_unimplemented_device("riscv.lowrisc.ibex.hmac",
memmap[IBEX_HMAC].base, memmap[IBEX_HMAC].size);
create_unimplemented_device("riscv.lowrisc.ibex.plic",
memmap[IBEX_PLIC].base, memmap[IBEX_PLIC].size);
create_unimplemented_device("riscv.lowrisc.ibex.pinmux",
memmap[IBEX_PINMUX].base, memmap[IBEX_PINMUX].size);
create_unimplemented_device("riscv.lowrisc.ibex.alert_handler",
memmap[IBEX_ALERT_HANDLER].base, memmap[IBEX_ALERT_HANDLER].size);
create_unimplemented_device("riscv.lowrisc.ibex.nmi_gen",
memmap[IBEX_NMI_GEN].base, memmap[IBEX_NMI_GEN].size);
create_unimplemented_device("riscv.lowrisc.ibex.usbdev",
memmap[IBEX_USBDEV].base, memmap[IBEX_USBDEV].size);
create_unimplemented_device("riscv.lowrisc.ibex.padctrl",
memmap[IBEX_PADCTRL].base, memmap[IBEX_PADCTRL].size);
}
static void riscv_lowrisc_ibex_soc_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = riscv_lowrisc_ibex_soc_realize;
/* Reason: Uses serial_hds in realize function, thus can't be used twice */
dc->user_creatable = false;
}
static const TypeInfo riscv_lowrisc_ibex_soc_type_info = {
.name = TYPE_RISCV_IBEX_SOC,
.parent = TYPE_DEVICE,
.instance_size = sizeof(LowRISCIbexSoCState),
.instance_init = riscv_lowrisc_ibex_soc_init,
.class_init = riscv_lowrisc_ibex_soc_class_init,
};
static void riscv_lowrisc_ibex_soc_register_types(void)
{
type_register_static(&riscv_lowrisc_ibex_soc_type_info);
}
type_init(riscv_lowrisc_ibex_soc_register_types)

68
include/hw/riscv/opentitan.h Normal file
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@ -0,0 +1,68 @@
/*
* QEMU RISC-V Board Compatible with OpenTitan FPGA platform
*
* Copyright (c) 2020 Western Digital
*
* 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/>.
*/
#ifndef HW_OPENTITAN_H
#define HW_OPENTITAN_H
#include "hw/riscv/riscv_hart.h"
#define TYPE_RISCV_IBEX_SOC "riscv.lowrisc.ibex.soc"
#define RISCV_IBEX_SOC(obj) \
OBJECT_CHECK(LowRISCIbexSoCState, (obj), TYPE_RISCV_IBEX_SOC)
typedef struct LowRISCIbexSoCState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
RISCVHartArrayState cpus;
MemoryRegion flash_mem;
MemoryRegion rom;
} LowRISCIbexSoCState;
typedef struct OpenTitanState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
LowRISCIbexSoCState soc;
} OpenTitanState;
enum {
IBEX_ROM,
IBEX_RAM,
IBEX_FLASH,
IBEX_UART,
IBEX_GPIO,
IBEX_SPI,
IBEX_FLASH_CTRL,
IBEX_RV_TIMER,
IBEX_AES,
IBEX_HMAC,
IBEX_PLIC,
IBEX_PWRMGR,
IBEX_RSTMGR,
IBEX_CLKMGR,
IBEX_PINMUX,
IBEX_ALERT_HANDLER,
IBEX_NMI_GEN,
IBEX_USBDEV,
IBEX_PADCTRL,
};
#endif