diff options
Diffstat (limited to 'hw/riscv')
| -rw-r--r-- | hw/riscv/Makefile.objs | 1 | ||||
| -rw-r--r-- | hw/riscv/sifive_e.c | 28 | ||||
| -rw-r--r-- | hw/riscv/sifive_gpio.c | 388 | ||||
| -rw-r--r-- | hw/riscv/spike.c | 106 | ||||
| -rw-r--r-- | hw/riscv/trace-events | 7 | ||||
| -rw-r--r-- | hw/riscv/virt.c | 4 |
6 files changed, 529 insertions, 5 deletions
diff --git a/hw/riscv/Makefile.objs b/hw/riscv/Makefile.objs index 79bfb3abf9..a65027304a 100644 --- a/hw/riscv/Makefile.objs +++ b/hw/riscv/Makefile.objs @@ -2,6 +2,7 @@ obj-$(CONFIG_SPIKE) += riscv_htif.o obj-$(CONFIG_HART) += riscv_hart.o obj-$(CONFIG_SIFIVE_E) += sifive_e.o obj-$(CONFIG_SIFIVE) += sifive_clint.o +obj-$(CONFIG_SIFIVE) += sifive_gpio.o obj-$(CONFIG_SIFIVE) += sifive_prci.o obj-$(CONFIG_SIFIVE) += sifive_plic.o obj-$(CONFIG_SIFIVE) += sifive_test.o diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index b1cd11363c..80ac56fa7d 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -146,11 +146,15 @@ static void riscv_sifive_e_soc_init(Object *obj) &error_abort); object_property_set_int(OBJECT(&s->cpus), smp_cpus, "num-harts", &error_abort); + sysbus_init_child_obj(obj, "riscv.sifive.e.gpio0", + &s->gpio, sizeof(s->gpio), + TYPE_SIFIVE_GPIO); } static void riscv_sifive_e_soc_realize(DeviceState *dev, Error **errp) { const struct MemmapEntry *memmap = sifive_e_memmap; + Error *err = NULL; SiFiveESoCState *s = RISCV_E_SOC(dev); MemoryRegion *sys_mem = get_system_memory(); @@ -184,8 +188,28 @@ static void riscv_sifive_e_soc_realize(DeviceState *dev, Error **errp) sifive_mmio_emulate(sys_mem, "riscv.sifive.e.aon", memmap[SIFIVE_E_AON].base, memmap[SIFIVE_E_AON].size); sifive_prci_create(memmap[SIFIVE_E_PRCI].base); - sifive_mmio_emulate(sys_mem, "riscv.sifive.e.gpio0", - memmap[SIFIVE_E_GPIO0].base, memmap[SIFIVE_E_GPIO0].size); + + /* GPIO */ + + object_property_set_bool(OBJECT(&s->gpio), true, "realized", &err); + if (err) { + error_propagate(errp, err); + return; + } + + /* Map GPIO registers */ + sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_E_GPIO0].base); + + /* Pass all GPIOs to the SOC layer so they are available to the board */ + qdev_pass_gpios(DEVICE(&s->gpio), dev, NULL); + + /* Connect GPIO interrupts to the PLIC */ + for (int i = 0; i < 32; i++) { + sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), i, + qdev_get_gpio_in(DEVICE(s->plic), + SIFIVE_E_GPIO0_IRQ0 + i)); + } + sifive_uart_create(sys_mem, memmap[SIFIVE_E_UART0].base, serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_E_UART0_IRQ)); sifive_mmio_emulate(sys_mem, "riscv.sifive.e.qspi0", diff --git a/hw/riscv/sifive_gpio.c b/hw/riscv/sifive_gpio.c new file mode 100644 index 0000000000..06bd8112d7 --- /dev/null +++ b/hw/riscv/sifive_gpio.c @@ -0,0 +1,388 @@ +/* + * sifive System-on-Chip general purpose input/output register definition + * + * Copyright 2019 AdaCore + * + * Base on nrf51_gpio.c: + * + * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de> + * + * This code is licensed under the GPL version 2 or later. See + * the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/riscv/sifive_gpio.h" +#include "trace.h" + +static void update_output_irq(SIFIVEGPIOState *s) +{ + + uint32_t pending; + uint32_t pin; + + pending = s->high_ip & s->high_ie; + pending |= s->low_ip & s->low_ie; + pending |= s->rise_ip & s->rise_ie; + pending |= s->fall_ip & s->fall_ie; + + for (int i = 0; i < SIFIVE_GPIO_PINS; i++) { + pin = 1 << i; + qemu_set_irq(s->irq[i], (pending & pin) != 0); + trace_sifive_gpio_update_output_irq(i, (pending & pin) != 0); + } +} + +static void update_state(SIFIVEGPIOState *s) +{ + size_t i; + bool prev_ival, in, in_mask, port, out_xor, pull, output_en, input_en, + rise_ip, fall_ip, low_ip, high_ip, oval, actual_value, ival; + + for (i = 0; i < SIFIVE_GPIO_PINS; i++) { + + prev_ival = extract32(s->value, i, 1); + in = extract32(s->in, i, 1); + in_mask = extract32(s->in_mask, i, 1); + port = extract32(s->port, i, 1); + out_xor = extract32(s->out_xor, i, 1); + pull = extract32(s->pue, i, 1); + output_en = extract32(s->output_en, i, 1); + input_en = extract32(s->input_en, i, 1); + rise_ip = extract32(s->rise_ip, i, 1); + fall_ip = extract32(s->fall_ip, i, 1); + low_ip = extract32(s->low_ip, i, 1); + high_ip = extract32(s->high_ip, i, 1); + + /* Output value (IOF not supported) */ + oval = output_en && (port ^ out_xor); + + /* Pin both driven externally and internally */ + if (output_en && in_mask) { + qemu_log_mask(LOG_GUEST_ERROR, "GPIO pin %zu short circuited\n", i); + } + + if (in_mask) { + /* The pin is driven by external device */ + actual_value = in; + } else if (output_en) { + /* The pin is driven by internal circuit */ + actual_value = oval; + } else { + /* Floating? Apply pull-up resistor */ + actual_value = pull; + } + + qemu_set_irq(s->output[i], actual_value); + + /* Input value */ + ival = input_en && actual_value; + + /* Interrupts */ + high_ip = high_ip || ival; + s->high_ip = deposit32(s->high_ip, i, 1, high_ip); + + low_ip = low_ip || !ival; + s->low_ip = deposit32(s->low_ip, i, 1, low_ip); + + rise_ip = rise_ip || (ival && !prev_ival); + s->rise_ip = deposit32(s->rise_ip, i, 1, rise_ip); + + fall_ip = fall_ip || (!ival && prev_ival); + s->fall_ip = deposit32(s->fall_ip, i, 1, fall_ip); + + /* Update value */ + s->value = deposit32(s->value, i, 1, ival); + } + update_output_irq(s); +} + +static uint64_t sifive_gpio_read(void *opaque, hwaddr offset, unsigned int size) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + uint64_t r = 0; + + switch (offset) { + case SIFIVE_GPIO_REG_VALUE: + r = s->value; + break; + + case SIFIVE_GPIO_REG_INPUT_EN: + r = s->input_en; + break; + + case SIFIVE_GPIO_REG_OUTPUT_EN: + r = s->output_en; + break; + + case SIFIVE_GPIO_REG_PORT: + r = s->port; + break; + + case SIFIVE_GPIO_REG_PUE: + r = s->pue; + break; + + case SIFIVE_GPIO_REG_DS: + r = s->ds; + break; + + case SIFIVE_GPIO_REG_RISE_IE: + r = s->rise_ie; + break; + + case SIFIVE_GPIO_REG_RISE_IP: + r = s->rise_ip; + break; + + case SIFIVE_GPIO_REG_FALL_IE: + r = s->fall_ie; + break; + + case SIFIVE_GPIO_REG_FALL_IP: + r = s->fall_ip; + break; + + case SIFIVE_GPIO_REG_HIGH_IE: + r = s->high_ie; + break; + + case SIFIVE_GPIO_REG_HIGH_IP: + r = s->high_ip; + break; + + case SIFIVE_GPIO_REG_LOW_IE: + r = s->low_ie; + break; + + case SIFIVE_GPIO_REG_LOW_IP: + r = s->low_ip; + break; + + case SIFIVE_GPIO_REG_IOF_EN: + r = s->iof_en; + break; + + case SIFIVE_GPIO_REG_IOF_SEL: + r = s->iof_sel; + break; + + case SIFIVE_GPIO_REG_OUT_XOR: + r = s->out_xor; + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: bad read offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + } + + trace_sifive_gpio_read(offset, r); + + return r; +} + +static void sifive_gpio_write(void *opaque, hwaddr offset, + uint64_t value, unsigned int size) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + + trace_sifive_gpio_write(offset, value); + + switch (offset) { + + case SIFIVE_GPIO_REG_INPUT_EN: + s->input_en = value; + break; + + case SIFIVE_GPIO_REG_OUTPUT_EN: + s->output_en = value; + break; + + case SIFIVE_GPIO_REG_PORT: + s->port = value; + break; + + case SIFIVE_GPIO_REG_PUE: + s->pue = value; + break; + + case SIFIVE_GPIO_REG_DS: + s->ds = value; + break; + + case SIFIVE_GPIO_REG_RISE_IE: + s->rise_ie = value; + break; + + case SIFIVE_GPIO_REG_RISE_IP: + /* Write 1 to clear */ + s->rise_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_FALL_IE: + s->fall_ie = value; + break; + + case SIFIVE_GPIO_REG_FALL_IP: + /* Write 1 to clear */ + s->fall_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_HIGH_IE: + s->high_ie = value; + break; + + case SIFIVE_GPIO_REG_HIGH_IP: + /* Write 1 to clear */ + s->high_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_LOW_IE: + s->low_ie = value; + break; + + case SIFIVE_GPIO_REG_LOW_IP: + /* Write 1 to clear */ + s->low_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_IOF_EN: + s->iof_en = value; + break; + + case SIFIVE_GPIO_REG_IOF_SEL: + s->iof_sel = value; + break; + + case SIFIVE_GPIO_REG_OUT_XOR: + s->out_xor = value; + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: bad write offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + } + + update_state(s); +} + +static const MemoryRegionOps gpio_ops = { + .read = sifive_gpio_read, + .write = sifive_gpio_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl.min_access_size = 4, + .impl.max_access_size = 4, +}; + +static void sifive_gpio_set(void *opaque, int line, int value) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + + trace_sifive_gpio_set(line, value); + + assert(line >= 0 && line < SIFIVE_GPIO_PINS); + + s->in_mask = deposit32(s->in_mask, line, 1, value >= 0); + if (value >= 0) { + s->in = deposit32(s->in, line, 1, value != 0); + } + + update_state(s); +} + +static void sifive_gpio_reset(DeviceState *dev) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(dev); + + s->value = 0; + s->input_en = 0; + s->output_en = 0; + s->port = 0; + s->pue = 0; + s->ds = 0; + s->rise_ie = 0; + s->rise_ip = 0; + s->fall_ie = 0; + s->fall_ip = 0; + s->high_ie = 0; + s->high_ip = 0; + s->low_ie = 0; + s->low_ip = 0; + s->iof_en = 0; + s->iof_sel = 0; + s->out_xor = 0; + s->in = 0; + s->in_mask = 0; + +} + +static const VMStateDescription vmstate_sifive_gpio = { + .name = TYPE_SIFIVE_GPIO, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(value, SIFIVEGPIOState), + VMSTATE_UINT32(input_en, SIFIVEGPIOState), + VMSTATE_UINT32(output_en, SIFIVEGPIOState), + VMSTATE_UINT32(port, SIFIVEGPIOState), + VMSTATE_UINT32(pue, SIFIVEGPIOState), + VMSTATE_UINT32(rise_ie, SIFIVEGPIOState), + VMSTATE_UINT32(rise_ip, SIFIVEGPIOState), + VMSTATE_UINT32(fall_ie, SIFIVEGPIOState), + VMSTATE_UINT32(fall_ip, SIFIVEGPIOState), + VMSTATE_UINT32(high_ie, SIFIVEGPIOState), + VMSTATE_UINT32(high_ip, SIFIVEGPIOState), + VMSTATE_UINT32(low_ie, SIFIVEGPIOState), + VMSTATE_UINT32(low_ip, SIFIVEGPIOState), + VMSTATE_UINT32(iof_en, SIFIVEGPIOState), + VMSTATE_UINT32(iof_sel, SIFIVEGPIOState), + VMSTATE_UINT32(out_xor, SIFIVEGPIOState), + VMSTATE_UINT32(in, SIFIVEGPIOState), + VMSTATE_UINT32(in_mask, SIFIVEGPIOState), + VMSTATE_END_OF_LIST() + } +}; + +static void sifive_gpio_init(Object *obj) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(obj); + + memory_region_init_io(&s->mmio, obj, &gpio_ops, s, + TYPE_SIFIVE_GPIO, SIFIVE_GPIO_SIZE); + sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio); + + + for (int i = 0; i < SIFIVE_GPIO_PINS; i++) { + sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq[i]); + } + + qdev_init_gpio_in(DEVICE(s), sifive_gpio_set, SIFIVE_GPIO_PINS); + qdev_init_gpio_out(DEVICE(s), s->output, SIFIVE_GPIO_PINS); +} + +static void sifive_gpio_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_sifive_gpio; + dc->reset = sifive_gpio_reset; + dc->desc = "sifive GPIO"; +} + +static const TypeInfo sifive_gpio_info = { + .name = TYPE_SIFIVE_GPIO, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SIFIVEGPIOState), + .instance_init = sifive_gpio_init, + .class_init = sifive_gpio_class_init +}; + +static void sifive_gpio_register_types(void) +{ + type_register_static(&sifive_gpio_info); +} + +type_init(sifive_gpio_register_types) diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index 2a000a5800..5b33d4be3b 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -39,6 +39,7 @@ #include "chardev/char.h" #include "sysemu/arch_init.h" #include "sysemu/device_tree.h" +#include "sysemu/qtest.h" #include "exec/address-spaces.h" #include "elf.h" @@ -160,7 +161,89 @@ static void create_fdt(SpikeState *s, const struct MemmapEntry *memmap, qemu_fdt_add_subnode(fdt, "/chosen"); qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } - } +} + +static void spike_board_init(MachineState *machine) +{ + const struct MemmapEntry *memmap = spike_memmap; + + SpikeState *s = g_new0(SpikeState, 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_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), + TYPE_RISCV_HART_ARRAY, &error_abort, NULL); + object_property_set_str(OBJECT(&s->soc), machine->cpu_type, "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 system main memory (actual RAM) */ + memory_region_init_ram(main_mem, NULL, "riscv.spike.ram", + machine->ram_size, &error_fatal); + memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base, + 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.spike.mrom", + memmap[SPIKE_MROM].size, &error_fatal); + memory_region_add_subregion(system_memory, memmap[SPIKE_MROM].base, + mask_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[SPIKE_DRAM].base, /* start: .dword DRAM_BASE */ + 0x00000000, + /* dtb: */ + }; + + /* copy in the reset vector in little_endian byte order */ + for (i = 0; i < sizeof(reset_vec) >> 2; i++) { + reset_vec[i] = cpu_to_le32(reset_vec[i]); + } + rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), + memmap[SPIKE_MROM].base, &address_space_memory); + + /* copy in the device tree */ + if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > + memmap[SPIKE_MROM].size - sizeof(reset_vec)) { + error_report("not enough space to store device-tree"); + exit(1); + } + qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); + rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), + memmap[SPIKE_MROM].base + sizeof(reset_vec), + &address_space_memory); + + /* initialize HTIF using symbols found in load_kernel */ + htif_mm_init(system_memory, mask_rom, &s->soc.harts[0].env, serial_hd(0)); + + /* Core Local Interruptor (timer and IPI) */ + sifive_clint_create(memmap[SPIKE_CLINT].base, memmap[SPIKE_CLINT].size, + smp_cpus, SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); +} static void spike_v1_10_0_board_init(MachineState *machine) { @@ -172,6 +255,12 @@ static void spike_v1_10_0_board_init(MachineState *machine) MemoryRegion *mask_rom = g_new(MemoryRegion, 1); int i; + if (!qtest_enabled()) { + info_report("The Spike v1.10.0 machine has been deprecated. " + "Please use the generic spike machine and specify the ISA " + "versions using -cpu."); + } + /* Initialize SOC */ object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY, &error_abort, NULL); @@ -254,6 +343,12 @@ static void spike_v1_09_1_board_init(MachineState *machine) MemoryRegion *mask_rom = g_new(MemoryRegion, 1); int i; + if (!qtest_enabled()) { + info_report("The Spike v1.09.1 machine has been deprecated. " + "Please use the generic spike machine and specify the ISA " + "versions using -cpu."); + } + /* Initialize SOC */ object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY, &error_abort, NULL); @@ -359,8 +454,17 @@ static void spike_v1_10_0_machine_init(MachineClass *mc) mc->desc = "RISC-V Spike Board (Privileged ISA v1.10)"; mc->init = spike_v1_10_0_board_init; mc->max_cpus = 1; +} + +static void spike_machine_init(MachineClass *mc) +{ + mc->desc = "RISC-V Spike Board"; + mc->init = spike_board_init; + mc->max_cpus = 1; mc->is_default = 1; + mc->default_cpu_type = SPIKE_V1_10_0_CPU; } DEFINE_MACHINE("spike_v1.9.1", spike_v1_09_1_machine_init) DEFINE_MACHINE("spike_v1.10", spike_v1_10_0_machine_init) +DEFINE_MACHINE("spike", spike_machine_init) diff --git a/hw/riscv/trace-events b/hw/riscv/trace-events new file mode 100644 index 0000000000..6d59233e23 --- /dev/null +++ b/hw/riscv/trace-events @@ -0,0 +1,7 @@ +# See docs/devel/tracing.txt for syntax documentation. + +# hw/gpio/sifive_gpio.c +sifive_gpio_read(uint64_t offset, uint64_t r) "offset 0x%" PRIx64 " value 0x%" PRIx64 +sifive_gpio_write(uint64_t offset, uint64_t value) "offset 0x%" PRIx64 " value 0x%" PRIx64 +sifive_gpio_set(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 +sifive_gpio_update_output_irq(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index fc4c6b306e..84d94d0c42 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -29,7 +29,6 @@ #include "hw/sysbus.h" #include "hw/char/serial.h" #include "target/riscv/cpu.h" -#include "hw/riscv/riscv_htif.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/sifive_plic.h" #include "hw/riscv/sifive_clint.h" @@ -400,7 +399,7 @@ static void riscv_virt_board_init(MachineState *machine) /* Initialize SOC */ object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), TYPE_RISCV_HART_ARRAY, &error_abort, NULL); - object_property_set_str(OBJECT(&s->soc), VIRT_CPU, "cpu-type", + object_property_set_str(OBJECT(&s->soc), machine->cpu_type, "cpu-type", &error_abort); object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", &error_abort); @@ -526,6 +525,7 @@ static void riscv_virt_board_machine_init(MachineClass *mc) mc->desc = "RISC-V VirtIO Board (Privileged ISA v1.10)"; mc->init = riscv_virt_board_init; mc->max_cpus = 8; /* hardcoded limit in BBL */ + mc->default_cpu_type = VIRT_CPU; } DEFINE_MACHINE("virt", riscv_virt_board_machine_init) |