diff options
Diffstat (limited to 'hw/riscv/opentitan.c')
| -rw-r--r-- | hw/riscv/opentitan.c | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c new file mode 100644 index 000000000..c531450b9 --- /dev/null +++ b/hw/riscv/opentitan.c @@ -0,0 +1,284 @@ +/* + * 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 "qemu/cutils.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 "qemu/units.h" +#include "sysemu/sysemu.h" + +static const MemMapEntry ibex_memmap[] = { + [IBEX_DEV_ROM] = { 0x00008000, 16 * KiB }, + [IBEX_DEV_RAM] = { 0x10000000, 0x10000 }, + [IBEX_DEV_FLASH] = { 0x20000000, 0x80000 }, + [IBEX_DEV_UART] = { 0x40000000, 0x1000 }, + [IBEX_DEV_GPIO] = { 0x40040000, 0x1000 }, + [IBEX_DEV_SPI] = { 0x40050000, 0x1000 }, + [IBEX_DEV_I2C] = { 0x40080000, 0x1000 }, + [IBEX_DEV_PATTGEN] = { 0x400e0000, 0x1000 }, + [IBEX_DEV_TIMER] = { 0x40100000, 0x1000 }, + [IBEX_DEV_SENSOR_CTRL] = { 0x40110000, 0x1000 }, + [IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x4000 }, + [IBEX_DEV_USBDEV] = { 0x40150000, 0x1000 }, + [IBEX_DEV_PWRMGR] = { 0x40400000, 0x1000 }, + [IBEX_DEV_RSTMGR] = { 0x40410000, 0x1000 }, + [IBEX_DEV_CLKMGR] = { 0x40420000, 0x1000 }, + [IBEX_DEV_PINMUX] = { 0x40460000, 0x1000 }, + [IBEX_DEV_PADCTRL] = { 0x40470000, 0x1000 }, + [IBEX_DEV_FLASH_CTRL] = { 0x41000000, 0x1000 }, + [IBEX_DEV_AES] = { 0x41100000, 0x1000 }, + [IBEX_DEV_HMAC] = { 0x41110000, 0x1000 }, + [IBEX_DEV_KMAC] = { 0x41120000, 0x1000 }, + [IBEX_DEV_OTBN] = { 0x41130000, 0x10000 }, + [IBEX_DEV_KEYMGR] = { 0x41140000, 0x1000 }, + [IBEX_DEV_CSRNG] = { 0x41150000, 0x1000 }, + [IBEX_DEV_ENTROPY] = { 0x41160000, 0x1000 }, + [IBEX_DEV_EDNO] = { 0x41170000, 0x1000 }, + [IBEX_DEV_EDN1] = { 0x41180000, 0x1000 }, + [IBEX_DEV_ALERT_HANDLER] = { 0x411b0000, 0x1000 }, + [IBEX_DEV_NMI_GEN] = { 0x411c0000, 0x1000 }, + [IBEX_DEV_PERI] = { 0x411f0000, 0x10000 }, + [IBEX_DEV_PLIC] = { 0x48000000, 0x4005000 }, + [IBEX_DEV_FLASH_VIRTUAL] = { 0x80000000, 0x80000 }, +}; + +static void opentitan_board_init(MachineState *machine) +{ + MachineClass *mc = MACHINE_GET_CLASS(machine); + const MemMapEntry *memmap = ibex_memmap; + OpenTitanState *s = g_new0(OpenTitanState, 1); + MemoryRegion *sys_mem = get_system_memory(); + + if (machine->ram_size != mc->default_ram_size) { + char *sz = size_to_str(mc->default_ram_size); + error_report("Invalid RAM size, should be %s", sz); + g_free(sz); + exit(EXIT_FAILURE); + } + + /* Initialize SoC */ + object_initialize_child(OBJECT(machine), "soc", &s->soc, + TYPE_RISCV_IBEX_SOC); + qdev_realize(DEVICE(&s->soc), NULL, &error_abort); + + memory_region_add_subregion(sys_mem, + memmap[IBEX_DEV_RAM].base, machine->ram); + + if (machine->firmware) { + riscv_load_firmware(machine->firmware, memmap[IBEX_DEV_RAM].base, NULL); + } + + if (machine->kernel_filename) { + riscv_load_kernel(machine->kernel_filename, + memmap[IBEX_DEV_RAM].base, NULL); + } +} + +static void opentitan_machine_init(MachineClass *mc) +{ + mc->desc = "RISC-V Board compatible with OpenTitan"; + mc->init = opentitan_board_init; + mc->max_cpus = 1; + mc->default_cpu_type = TYPE_RISCV_CPU_IBEX; + mc->default_ram_id = "riscv.lowrisc.ibex.ram"; + mc->default_ram_size = ibex_memmap[IBEX_DEV_RAM].size; +} + +DEFINE_MACHINE("opentitan", opentitan_machine_init) + +static void lowrisc_ibex_soc_init(Object *obj) +{ + LowRISCIbexSoCState *s = RISCV_IBEX_SOC(obj); + + object_initialize_child(obj, "cpus", &s->cpus, TYPE_RISCV_HART_ARRAY); + + object_initialize_child(obj, "plic", &s->plic, TYPE_SIFIVE_PLIC); + + object_initialize_child(obj, "uart", &s->uart, TYPE_IBEX_UART); + + object_initialize_child(obj, "timer", &s->timer, TYPE_IBEX_TIMER); +} + +static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp) +{ + const MemMapEntry *memmap = ibex_memmap; + MachineState *ms = MACHINE(qdev_get_machine()); + LowRISCIbexSoCState *s = RISCV_IBEX_SOC(dev_soc); + MemoryRegion *sys_mem = get_system_memory(); + int i; + + object_property_set_str(OBJECT(&s->cpus), "cpu-type", ms->cpu_type, + &error_abort); + object_property_set_int(OBJECT(&s->cpus), "num-harts", ms->smp.cpus, + &error_abort); + object_property_set_int(OBJECT(&s->cpus), "resetvec", 0x8080, &error_abort); + sysbus_realize(SYS_BUS_DEVICE(&s->cpus), &error_abort); + + /* Boot ROM */ + memory_region_init_rom(&s->rom, OBJECT(dev_soc), "riscv.lowrisc.ibex.rom", + memmap[IBEX_DEV_ROM].size, &error_fatal); + memory_region_add_subregion(sys_mem, + memmap[IBEX_DEV_ROM].base, &s->rom); + + /* Flash memory */ + memory_region_init_rom(&s->flash_mem, OBJECT(dev_soc), "riscv.lowrisc.ibex.flash", + memmap[IBEX_DEV_FLASH].size, &error_fatal); + memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc), + "riscv.lowrisc.ibex.flash_virtual", &s->flash_mem, 0, + memmap[IBEX_DEV_FLASH_VIRTUAL].size); + memory_region_add_subregion(sys_mem, memmap[IBEX_DEV_FLASH].base, + &s->flash_mem); + memory_region_add_subregion(sys_mem, memmap[IBEX_DEV_FLASH_VIRTUAL].base, + &s->flash_alias); + + /* PLIC */ + qdev_prop_set_string(DEVICE(&s->plic), "hart-config", "M"); + qdev_prop_set_uint32(DEVICE(&s->plic), "hartid-base", 0); + qdev_prop_set_uint32(DEVICE(&s->plic), "num-sources", 180); + qdev_prop_set_uint32(DEVICE(&s->plic), "num-priorities", 3); + qdev_prop_set_uint32(DEVICE(&s->plic), "priority-base", 0x00); + qdev_prop_set_uint32(DEVICE(&s->plic), "pending-base", 0x1000); + qdev_prop_set_uint32(DEVICE(&s->plic), "enable-base", 0x2000); + qdev_prop_set_uint32(DEVICE(&s->plic), "enable-stride", 0x18); + qdev_prop_set_uint32(DEVICE(&s->plic), "context-base", 0x200000); + qdev_prop_set_uint32(DEVICE(&s->plic), "context-stride", 8); + qdev_prop_set_uint32(DEVICE(&s->plic), "aperture-size", memmap[IBEX_DEV_PLIC].size); + + if (!sysbus_realize(SYS_BUS_DEVICE(&s->plic), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->plic), 0, memmap[IBEX_DEV_PLIC].base); + + for (i = 0; i < ms->smp.cpus; i++) { + CPUState *cpu = qemu_get_cpu(i); + + qdev_connect_gpio_out(DEVICE(&s->plic), ms->smp.cpus + i, + qdev_get_gpio_in(DEVICE(cpu), IRQ_M_EXT)); + } + + /* UART */ + qdev_prop_set_chr(DEVICE(&(s->uart)), "chardev", serial_hd(0)); + if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart), 0, memmap[IBEX_DEV_UART].base); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart), + 0, qdev_get_gpio_in(DEVICE(&s->plic), + IBEX_UART0_TX_WATERMARK_IRQ)); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart), + 1, qdev_get_gpio_in(DEVICE(&s->plic), + IBEX_UART0_RX_WATERMARK_IRQ)); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart), + 2, qdev_get_gpio_in(DEVICE(&s->plic), + IBEX_UART0_TX_EMPTY_IRQ)); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart), + 3, qdev_get_gpio_in(DEVICE(&s->plic), + IBEX_UART0_RX_OVERFLOW_IRQ)); + + if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer), errp)) { + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->timer), 0, memmap[IBEX_DEV_TIMER].base); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer), + 0, qdev_get_gpio_in(DEVICE(&s->plic), + IBEX_TIMER_TIMEREXPIRED0_0)); + qdev_connect_gpio_out(DEVICE(&s->timer), 0, + qdev_get_gpio_in(DEVICE(qemu_get_cpu(0)), + IRQ_M_TIMER)); + + create_unimplemented_device("riscv.lowrisc.ibex.gpio", + memmap[IBEX_DEV_GPIO].base, memmap[IBEX_DEV_GPIO].size); + create_unimplemented_device("riscv.lowrisc.ibex.spi", + memmap[IBEX_DEV_SPI].base, memmap[IBEX_DEV_SPI].size); + create_unimplemented_device("riscv.lowrisc.ibex.i2c", + memmap[IBEX_DEV_I2C].base, memmap[IBEX_DEV_I2C].size); + create_unimplemented_device("riscv.lowrisc.ibex.pattgen", + memmap[IBEX_DEV_PATTGEN].base, memmap[IBEX_DEV_PATTGEN].size); + create_unimplemented_device("riscv.lowrisc.ibex.sensor_ctrl", + memmap[IBEX_DEV_SENSOR_CTRL].base, memmap[IBEX_DEV_SENSOR_CTRL].size); + create_unimplemented_device("riscv.lowrisc.ibex.otp_ctrl", + memmap[IBEX_DEV_OTP_CTRL].base, memmap[IBEX_DEV_OTP_CTRL].size); + create_unimplemented_device("riscv.lowrisc.ibex.pwrmgr", + memmap[IBEX_DEV_PWRMGR].base, memmap[IBEX_DEV_PWRMGR].size); + create_unimplemented_device("riscv.lowrisc.ibex.rstmgr", + memmap[IBEX_DEV_RSTMGR].base, memmap[IBEX_DEV_RSTMGR].size); + create_unimplemented_device("riscv.lowrisc.ibex.clkmgr", + memmap[IBEX_DEV_CLKMGR].base, memmap[IBEX_DEV_CLKMGR].size); + create_unimplemented_device("riscv.lowrisc.ibex.pinmux", + memmap[IBEX_DEV_PINMUX].base, memmap[IBEX_DEV_PINMUX].size); + create_unimplemented_device("riscv.lowrisc.ibex.padctrl", + memmap[IBEX_DEV_PADCTRL].base, memmap[IBEX_DEV_PADCTRL].size); + create_unimplemented_device("riscv.lowrisc.ibex.usbdev", + memmap[IBEX_DEV_USBDEV].base, memmap[IBEX_DEV_USBDEV].size); + create_unimplemented_device("riscv.lowrisc.ibex.flash_ctrl", + memmap[IBEX_DEV_FLASH_CTRL].base, memmap[IBEX_DEV_FLASH_CTRL].size); + create_unimplemented_device("riscv.lowrisc.ibex.aes", + memmap[IBEX_DEV_AES].base, memmap[IBEX_DEV_AES].size); + create_unimplemented_device("riscv.lowrisc.ibex.hmac", + memmap[IBEX_DEV_HMAC].base, memmap[IBEX_DEV_HMAC].size); + create_unimplemented_device("riscv.lowrisc.ibex.kmac", + memmap[IBEX_DEV_KMAC].base, memmap[IBEX_DEV_KMAC].size); + create_unimplemented_device("riscv.lowrisc.ibex.keymgr", + memmap[IBEX_DEV_KEYMGR].base, memmap[IBEX_DEV_KEYMGR].size); + create_unimplemented_device("riscv.lowrisc.ibex.csrng", + memmap[IBEX_DEV_CSRNG].base, memmap[IBEX_DEV_CSRNG].size); + create_unimplemented_device("riscv.lowrisc.ibex.entropy", + memmap[IBEX_DEV_ENTROPY].base, memmap[IBEX_DEV_ENTROPY].size); + create_unimplemented_device("riscv.lowrisc.ibex.edn0", + memmap[IBEX_DEV_EDNO].base, memmap[IBEX_DEV_EDNO].size); + create_unimplemented_device("riscv.lowrisc.ibex.edn1", + memmap[IBEX_DEV_EDN1].base, memmap[IBEX_DEV_EDN1].size); + create_unimplemented_device("riscv.lowrisc.ibex.alert_handler", + memmap[IBEX_DEV_ALERT_HANDLER].base, memmap[IBEX_DEV_ALERT_HANDLER].size); + create_unimplemented_device("riscv.lowrisc.ibex.nmi_gen", + memmap[IBEX_DEV_NMI_GEN].base, memmap[IBEX_DEV_NMI_GEN].size); + create_unimplemented_device("riscv.lowrisc.ibex.otbn", + memmap[IBEX_DEV_OTBN].base, memmap[IBEX_DEV_OTBN].size); + create_unimplemented_device("riscv.lowrisc.ibex.peri", + memmap[IBEX_DEV_PERI].base, memmap[IBEX_DEV_PERI].size); +} + +static void lowrisc_ibex_soc_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + dc->realize = lowrisc_ibex_soc_realize; + /* Reason: Uses serial_hds in realize function, thus can't be used twice */ + dc->user_creatable = false; +} + +static const TypeInfo lowrisc_ibex_soc_type_info = { + .name = TYPE_RISCV_IBEX_SOC, + .parent = TYPE_DEVICE, + .instance_size = sizeof(LowRISCIbexSoCState), + .instance_init = lowrisc_ibex_soc_init, + .class_init = lowrisc_ibex_soc_class_init, +}; + +static void lowrisc_ibex_soc_register_types(void) +{ + type_register_static(&lowrisc_ibex_soc_type_info); +} + +type_init(lowrisc_ibex_soc_register_types) |