| /* |
| * 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" |
| |
| /* |
| * This version of the OpenTitan machine currently supports |
| * OpenTitan RTL version: |
| * <lowRISC/opentitan@565e4af39760a123c59a184aa2f5812a961fde47> |
| * |
| * MMIO mapping as per (specified commit): |
| * lowRISC/opentitan: hw/top_earlgrey/sw/autogen/top_earlgrey_memory.h |
| */ |
| static const MemMapEntry ibex_memmap[] = { |
| [IBEX_DEV_ROM] = { 0x00008000, 0x8000 }, |
| [IBEX_DEV_RAM] = { 0x10000000, 0x20000 }, |
| [IBEX_DEV_FLASH] = { 0x20000000, 0x100000 }, |
| [IBEX_DEV_UART] = { 0x40000000, 0x40 }, |
| [IBEX_DEV_GPIO] = { 0x40040000, 0x40 }, |
| [IBEX_DEV_SPI_DEVICE] = { 0x40050000, 0x2000 }, |
| [IBEX_DEV_I2C] = { 0x40080000, 0x80 }, |
| [IBEX_DEV_PATTGEN] = { 0x400e0000, 0x40 }, |
| [IBEX_DEV_TIMER] = { 0x40100000, 0x200 }, |
| [IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x2000 }, |
| [IBEX_DEV_LC_CTRL] = { 0x40140000, 0x100 }, |
| [IBEX_DEV_ALERT_HANDLER] = { 0x40150000, 0x800 }, |
| [IBEX_DEV_SPI_HOST0] = { 0x40300000, 0x40 }, |
| [IBEX_DEV_SPI_HOST1] = { 0x40310000, 0x40 }, |
| [IBEX_DEV_USBDEV] = { 0x40320000, 0x1000 }, |
| [IBEX_DEV_PWRMGR] = { 0x40400000, 0x80 }, |
| [IBEX_DEV_RSTMGR] = { 0x40410000, 0x80 }, |
| [IBEX_DEV_CLKMGR] = { 0x40420000, 0x80 }, |
| [IBEX_DEV_PINMUX] = { 0x40460000, 0x1000 }, |
| [IBEX_DEV_AON_TIMER] = { 0x40470000, 0x40 }, |
| [IBEX_DEV_SENSOR_CTRL] = { 0x40490000, 0x40 }, |
| [IBEX_DEV_FLASH_CTRL] = { 0x41000000, 0x200 }, |
| [IBEX_DEV_AES] = { 0x41100000, 0x100 }, |
| [IBEX_DEV_HMAC] = { 0x41110000, 0x1000 }, |
| [IBEX_DEV_KMAC] = { 0x41120000, 0x1000 }, |
| [IBEX_DEV_OTBN] = { 0x41130000, 0x10000 }, |
| [IBEX_DEV_KEYMGR] = { 0x41140000, 0x100 }, |
| [IBEX_DEV_CSRNG] = { 0x41150000, 0x80 }, |
| [IBEX_DEV_ENTROPY] = { 0x41160000, 0x100 }, |
| [IBEX_DEV_EDNO] = { 0x41170000, 0x80 }, |
| [IBEX_DEV_EDN1] = { 0x41180000, 0x80 }, |
| [IBEX_DEV_SRAM_CTRL] = { 0x411c0000, 0x20 }, |
| [IBEX_DEV_IBEX_CFG] = { 0x411f0000, 0x100 }, |
| [IBEX_DEV_PLIC] = { 0x48000000, 0x8000000 }, |
| [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_fatal); |
| |
| 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, &s->soc.cpus, |
| 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); |
| |
| for (int i = 0; i < OPENTITAN_NUM_SPI_HOSTS; i++) { |
| object_initialize_child(obj, "spi_host[*]", &s->spi_host[i], |
| TYPE_IBEX_SPI_HOST); |
| } |
| } |
| |
| static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp) |
| { |
| const MemMapEntry *memmap = ibex_memmap; |
| DeviceState *dev; |
| SysBusDevice *busdev; |
| 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", s->resetvec, |
| &error_abort); |
| sysbus_realize(SYS_BUS_DEVICE(&s->cpus), &error_fatal); |
| |
| /* 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), "num-sources", 180); |
| qdev_prop_set_uint32(DEVICE(&s->plic), "num-priorities", 3); |
| 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", 32); |
| 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)); |
| |
| /* SPI-Hosts */ |
| for (int i = 0; i < OPENTITAN_NUM_SPI_HOSTS; ++i) { |
| dev = DEVICE(&(s->spi_host[i])); |
| if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi_host[i]), errp)) { |
| return; |
| } |
| busdev = SYS_BUS_DEVICE(dev); |
| sysbus_mmio_map(busdev, 0, memmap[IBEX_DEV_SPI_HOST0 + i].base); |
| |
| switch (i) { |
| case OPENTITAN_SPI_HOST0: |
| sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(DEVICE(&s->plic), |
| IBEX_SPI_HOST0_ERR_IRQ)); |
| sysbus_connect_irq(busdev, 1, qdev_get_gpio_in(DEVICE(&s->plic), |
| IBEX_SPI_HOST0_SPI_EVENT_IRQ)); |
| break; |
| case OPENTITAN_SPI_HOST1: |
| sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(DEVICE(&s->plic), |
| IBEX_SPI_HOST1_ERR_IRQ)); |
| sysbus_connect_irq(busdev, 1, qdev_get_gpio_in(DEVICE(&s->plic), |
| IBEX_SPI_HOST1_SPI_EVENT_IRQ)); |
| break; |
| } |
| } |
| |
| create_unimplemented_device("riscv.lowrisc.ibex.gpio", |
| memmap[IBEX_DEV_GPIO].base, memmap[IBEX_DEV_GPIO].size); |
| create_unimplemented_device("riscv.lowrisc.ibex.spi_device", |
| memmap[IBEX_DEV_SPI_DEVICE].base, memmap[IBEX_DEV_SPI_DEVICE].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.lc_ctrl", |
| memmap[IBEX_DEV_LC_CTRL].base, memmap[IBEX_DEV_LC_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.aon_timer", |
| memmap[IBEX_DEV_AON_TIMER].base, memmap[IBEX_DEV_AON_TIMER].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.sram_ctrl", |
| memmap[IBEX_DEV_SRAM_CTRL].base, memmap[IBEX_DEV_SRAM_CTRL].size); |
| create_unimplemented_device("riscv.lowrisc.ibex.otbn", |
| memmap[IBEX_DEV_OTBN].base, memmap[IBEX_DEV_OTBN].size); |
| create_unimplemented_device("riscv.lowrisc.ibex.ibex_cfg", |
| memmap[IBEX_DEV_IBEX_CFG].base, memmap[IBEX_DEV_IBEX_CFG].size); |
| } |
| |
| static Property lowrisc_ibex_soc_props[] = { |
| DEFINE_PROP_UINT32("resetvec", LowRISCIbexSoCState, resetvec, 0x20000400), |
| DEFINE_PROP_END_OF_LIST() |
| }; |
| |
| static void lowrisc_ibex_soc_class_init(ObjectClass *oc, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(oc); |
| |
| device_class_set_props(dc, lowrisc_ibex_soc_props); |
| 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) |
