diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/openrisc/Kconfig | 9 | ||||
| -rw-r--r-- | hw/openrisc/meson.build | 1 | ||||
| -rw-r--r-- | hw/openrisc/virt.c | 417 |
3 files changed, 427 insertions, 0 deletions
diff --git a/hw/openrisc/Kconfig b/hw/openrisc/Kconfig index 8f284f3ba0..202134668e 100644 --- a/hw/openrisc/Kconfig +++ b/hw/openrisc/Kconfig @@ -4,3 +4,12 @@ config OR1K_SIM select OPENCORES_ETH select OMPIC select SPLIT_IRQ + +config OR1K_VIRT + bool + imply VIRTIO_VGA + imply TEST_DEVICES + select GOLDFISH_RTC + select SERIAL + select SIFIVE_TEST + select VIRTIO_MMIO diff --git a/hw/openrisc/meson.build b/hw/openrisc/meson.build index ab563820c5..2dbc6365bb 100644 --- a/hw/openrisc/meson.build +++ b/hw/openrisc/meson.build @@ -2,5 +2,6 @@ openrisc_ss = ss.source_set() openrisc_ss.add(files('cputimer.c')) openrisc_ss.add(files('boot.c')) openrisc_ss.add(when: 'CONFIG_OR1K_SIM', if_true: [files('openrisc_sim.c'), fdt]) +openrisc_ss.add(when: 'CONFIG_OR1K_VIRT', if_true: [files('virt.c'), fdt]) hw_arch += {'openrisc': openrisc_ss} diff --git a/hw/openrisc/virt.c b/hw/openrisc/virt.c new file mode 100644 index 0000000000..54f2732a6b --- /dev/null +++ b/hw/openrisc/virt.c @@ -0,0 +1,417 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * + * OpenRISC QEMU virtual machine. + * + * (c) 2022 Stafford Horne <shorne@gmail.com> + */ + +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "cpu.h" +#include "exec/address-spaces.h" +#include "hw/irq.h" +#include "hw/boards.h" +#include "hw/char/serial.h" +#include "hw/core/split-irq.h" +#include "hw/openrisc/boot.h" +#include "hw/misc/sifive_test.h" +#include "hw/qdev-properties.h" +#include "hw/rtc/goldfish_rtc.h" +#include "hw/sysbus.h" +#include "hw/virtio/virtio-mmio.h" +#include "sysemu/device_tree.h" +#include "sysemu/sysemu.h" +#include "sysemu/qtest.h" +#include "sysemu/reset.h" + +#include <libfdt.h> + +#define VIRT_CPUS_MAX 4 +#define VIRT_CLK_MHZ 20000000 + +#define TYPE_VIRT_MACHINE MACHINE_TYPE_NAME("virt") +#define VIRT_MACHINE(obj) \ + OBJECT_CHECK(OR1KVirtState, (obj), TYPE_VIRT_MACHINE) + +typedef struct OR1KVirtState { + /*< private >*/ + MachineState parent_obj; + + /*< public >*/ + void *fdt; + int fdt_size; + +} OR1KVirtState; + +enum { + VIRT_DRAM, + VIRT_TEST, + VIRT_RTC, + VIRT_VIRTIO, + VIRT_UART, + VIRT_OMPIC, +}; + +enum { + VIRT_OMPIC_IRQ = 1, + VIRT_UART_IRQ = 2, + VIRT_RTC_IRQ = 3, + VIRT_VIRTIO_IRQ = 4, /* to 12 */ + VIRTIO_COUNT = 8, +}; + +static const struct MemmapEntry { + hwaddr base; + hwaddr size; +} virt_memmap[] = { + [VIRT_DRAM] = { 0x00000000, 0 }, + [VIRT_UART] = { 0x90000000, 0x100 }, + [VIRT_TEST] = { 0x96000000, 0x8 }, + [VIRT_RTC] = { 0x96005000, 0x1000 }, + [VIRT_VIRTIO] = { 0x97000000, 0x1000 }, + [VIRT_OMPIC] = { 0x98000000, VIRT_CPUS_MAX * 8 }, +}; + +static struct openrisc_boot_info { + uint32_t bootstrap_pc; + uint32_t fdt_addr; +} boot_info; + +static void main_cpu_reset(void *opaque) +{ + OpenRISCCPU *cpu = opaque; + CPUState *cs = CPU(cpu); + + cpu_reset(CPU(cpu)); + + cpu_set_pc(cs, boot_info.bootstrap_pc); + cpu_set_gpr(&cpu->env, 3, boot_info.fdt_addr); +} + +static qemu_irq get_cpu_irq(OpenRISCCPU *cpus[], int cpunum, int irq_pin) +{ + return qdev_get_gpio_in_named(DEVICE(cpus[cpunum]), "IRQ", irq_pin); +} + +static qemu_irq get_per_cpu_irq(OpenRISCCPU *cpus[], int num_cpus, int irq_pin) +{ + int i; + + if (num_cpus > 1) { + DeviceState *splitter = qdev_new(TYPE_SPLIT_IRQ); + qdev_prop_set_uint32(splitter, "num-lines", num_cpus); + qdev_realize_and_unref(splitter, NULL, &error_fatal); + for (i = 0; i < num_cpus; i++) { + qdev_connect_gpio_out(splitter, i, get_cpu_irq(cpus, i, irq_pin)); + } + return qdev_get_gpio_in(splitter, 0); + } else { + return get_cpu_irq(cpus, 0, irq_pin); + } +} + +static void openrisc_create_fdt(OR1KVirtState *state, + const struct MemmapEntry *memmap, + int num_cpus, uint64_t mem_size, + const char *cmdline) +{ + void *fdt; + int cpu; + char *nodename; + int pic_ph; + + fdt = state->fdt = create_device_tree(&state->fdt_size); + if (!fdt) { + error_report("create_device_tree() failed"); + exit(1); + } + + qemu_fdt_setprop_string(fdt, "/", "compatible", "opencores,or1ksim"); + qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x1); + qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x1); + + qemu_fdt_add_subnode(fdt, "/soc"); + qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); + qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); + qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x1); + qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x1); + + nodename = g_strdup_printf("/memory@%" HWADDR_PRIx, + memmap[VIRT_DRAM].base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_cells(fdt, nodename, "reg", + memmap[VIRT_DRAM].base, mem_size); + qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); + g_free(nodename); + + qemu_fdt_add_subnode(fdt, "/cpus"); + qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); + qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); + + for (cpu = 0; cpu < num_cpus; cpu++) { + nodename = g_strdup_printf("/cpus/cpu@%d", cpu); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", + "opencores,or1200-rtlsvn481"); + qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu); + qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", + VIRT_CLK_MHZ); + g_free(nodename); + } + + nodename = (char *)"/pic"; + qemu_fdt_add_subnode(fdt, nodename); + pic_ph = qemu_fdt_alloc_phandle(fdt); + qemu_fdt_setprop_string(fdt, nodename, "compatible", + "opencores,or1k-pic-level"); + qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1); + qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_cell(fdt, nodename, "phandle", pic_ph); + + qemu_fdt_setprop_cell(fdt, "/", "interrupt-parent", pic_ph); + + qemu_fdt_add_subnode(fdt, "/chosen"); + if (cmdline) { + qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); + } + + /* Create aliases node for use by devices. */ + qemu_fdt_add_subnode(fdt, "/aliases"); +} + +static void openrisc_virt_ompic_init(OR1KVirtState *state, hwaddr base, + hwaddr size, int num_cpus, + OpenRISCCPU *cpus[], int irq_pin) +{ + void *fdt = state->fdt; + DeviceState *dev; + SysBusDevice *s; + char *nodename; + int i; + + dev = qdev_new("or1k-ompic"); + qdev_prop_set_uint32(dev, "num-cpus", num_cpus); + + s = SYS_BUS_DEVICE(dev); + sysbus_realize_and_unref(s, &error_fatal); + for (i = 0; i < num_cpus; i++) { + sysbus_connect_irq(s, i, get_cpu_irq(cpus, i, irq_pin)); + } + sysbus_mmio_map(s, 0, base); + + /* Add device tree node for ompic. */ + nodename = g_strdup_printf("/ompic@%" HWADDR_PRIx, base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "openrisc,ompic"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", base, size); + qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); + qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 0); + qemu_fdt_setprop_cell(fdt, nodename, "interrupts", irq_pin); + g_free(nodename); +} + +static void openrisc_virt_serial_init(OR1KVirtState *state, hwaddr base, + hwaddr size, int num_cpus, + OpenRISCCPU *cpus[], int irq_pin) +{ + void *fdt = state->fdt; + char *nodename; + qemu_irq serial_irq = get_per_cpu_irq(cpus, num_cpus, irq_pin); + + serial_mm_init(get_system_memory(), base, 0, serial_irq, 115200, + serial_hd(0), DEVICE_NATIVE_ENDIAN); + + /* Add device tree node for serial. */ + nodename = g_strdup_printf("/serial@%" HWADDR_PRIx, base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", base, size); + qemu_fdt_setprop_cell(fdt, nodename, "interrupts", irq_pin); + qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", VIRT_CLK_MHZ); + qemu_fdt_setprop(fdt, nodename, "big-endian", NULL, 0); + + /* The /chosen node is created during fdt creation. */ + qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); + qemu_fdt_setprop_string(fdt, "/aliases", "uart0", nodename); + g_free(nodename); +} + +static void openrisc_virt_test_init(OR1KVirtState *state, hwaddr base, + hwaddr size) +{ + void *fdt = state->fdt; + int test_ph; + char *nodename; + + /* SiFive Test MMIO device */ + sifive_test_create(base); + + /* SiFive Test MMIO Reset device FDT */ + nodename = g_strdup_printf("/soc/test@%" HWADDR_PRIx, base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon"); + test_ph = qemu_fdt_alloc_phandle(fdt); + qemu_fdt_setprop_cells(fdt, nodename, "reg", base, size); + qemu_fdt_setprop_cell(fdt, nodename, "phandle", test_ph); + qemu_fdt_setprop(fdt, nodename, "big-endian", NULL, 0); + g_free(nodename); + + nodename = g_strdup_printf("/soc/reboot"); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-reboot"); + qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_ph); + qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); + qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_RESET); + g_free(nodename); + + nodename = g_strdup_printf("/soc/poweroff"); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-poweroff"); + qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_ph); + qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); + qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_PASS); + g_free(nodename); + +} +static void openrisc_virt_rtc_init(OR1KVirtState *state, hwaddr base, + hwaddr size, int num_cpus, + OpenRISCCPU *cpus[], int irq_pin) +{ + void *fdt = state->fdt; + char *nodename; + qemu_irq rtc_irq = get_per_cpu_irq(cpus, num_cpus, irq_pin); + + /* Goldfish RTC */ + sysbus_create_simple(TYPE_GOLDFISH_RTC, base, rtc_irq); + + /* Goldfish RTC FDT */ + nodename = g_strdup_printf("/soc/rtc@%" HWADDR_PRIx, base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", + "google,goldfish-rtc"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", base, size); + qemu_fdt_setprop_cell(fdt, nodename, "interrupts", irq_pin); + g_free(nodename); + +} +static void openrisc_virt_virtio_init(OR1KVirtState *state, hwaddr base, + hwaddr size, int num_cpus, + OpenRISCCPU *cpus[], int irq_pin) +{ + void *fdt = state->fdt; + char *nodename; + DeviceState *dev; + SysBusDevice *sysbus; + qemu_irq virtio_irq = get_per_cpu_irq(cpus, num_cpus, irq_pin); + + /* VirtIO MMIO devices */ + dev = qdev_new(TYPE_VIRTIO_MMIO); + qdev_prop_set_bit(dev, "force-legacy", false); + sysbus = SYS_BUS_DEVICE(dev); + sysbus_realize_and_unref(sysbus, &error_fatal); + sysbus_connect_irq(sysbus, 0, virtio_irq); + sysbus_mmio_map(sysbus, 0, base); + + /* VirtIO MMIO devices FDT */ + nodename = g_strdup_printf("/soc/virtio_mmio@%" HWADDR_PRIx, base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "virtio,mmio"); + qemu_fdt_setprop_cells(fdt, nodename, "reg", base, size); + qemu_fdt_setprop_cell(fdt, nodename, "interrupts", irq_pin); + g_free(nodename); +} + +static void openrisc_virt_init(MachineState *machine) +{ + ram_addr_t ram_size = machine->ram_size; + const char *kernel_filename = machine->kernel_filename; + OpenRISCCPU *cpus[VIRT_CPUS_MAX] = {}; + OR1KVirtState *state = VIRT_MACHINE(machine); + MemoryRegion *ram; + hwaddr load_addr; + int n; + unsigned int smp_cpus = machine->smp.cpus; + + assert(smp_cpus >= 1 && smp_cpus <= VIRT_CPUS_MAX); + for (n = 0; n < smp_cpus; n++) { + cpus[n] = OPENRISC_CPU(cpu_create(machine->cpu_type)); + if (cpus[n] == NULL) { + fprintf(stderr, "Unable to find CPU definition!\n"); + exit(1); + } + + cpu_openrisc_clock_init(cpus[n]); + + qemu_register_reset(main_cpu_reset, cpus[n]); + } + + ram = g_malloc(sizeof(*ram)); + memory_region_init_ram(ram, NULL, "openrisc.ram", ram_size, &error_fatal); + memory_region_add_subregion(get_system_memory(), 0, ram); + + openrisc_create_fdt(state, virt_memmap, smp_cpus, machine->ram_size, + machine->kernel_cmdline); + + if (smp_cpus > 1) { + openrisc_virt_ompic_init(state, virt_memmap[VIRT_OMPIC].base, + virt_memmap[VIRT_OMPIC].size, + smp_cpus, cpus, VIRT_OMPIC_IRQ); + } + + openrisc_virt_serial_init(state, virt_memmap[VIRT_UART].base, + virt_memmap[VIRT_UART].size, + smp_cpus, cpus, VIRT_UART_IRQ); + + openrisc_virt_test_init(state, virt_memmap[VIRT_TEST].base, + virt_memmap[VIRT_TEST].size); + + openrisc_virt_rtc_init(state, virt_memmap[VIRT_RTC].base, + virt_memmap[VIRT_RTC].size, smp_cpus, cpus, + VIRT_RTC_IRQ); + + for (n = 0; n < VIRTIO_COUNT; n++) { + openrisc_virt_virtio_init(state, virt_memmap[VIRT_VIRTIO].base + + n * virt_memmap[VIRT_VIRTIO].size, + virt_memmap[VIRT_VIRTIO].size, + smp_cpus, cpus, VIRT_VIRTIO_IRQ + n); + } + + load_addr = openrisc_load_kernel(ram_size, kernel_filename, + &boot_info.bootstrap_pc); + if (load_addr > 0) { + if (machine->initrd_filename) { + load_addr = openrisc_load_initrd(state->fdt, + machine->initrd_filename, + load_addr, machine->ram_size); + } + boot_info.fdt_addr = openrisc_load_fdt(state->fdt, load_addr, + machine->ram_size); + } +} + +static void openrisc_virt_machine_init(ObjectClass *oc, void *data) +{ + MachineClass *mc = MACHINE_CLASS(oc); + + mc->desc = "or1k virtual machine"; + mc->init = openrisc_virt_init; + mc->max_cpus = VIRT_CPUS_MAX; + mc->is_default = false; + mc->default_cpu_type = OPENRISC_CPU_TYPE_NAME("or1200"); +} + +static const TypeInfo or1ksim_machine_typeinfo = { + .name = TYPE_VIRT_MACHINE, + .parent = TYPE_MACHINE, + .class_init = openrisc_virt_machine_init, + .instance_size = sizeof(OR1KVirtState), +}; + +static void or1ksim_machine_init_register_types(void) +{ + type_register_static(&or1ksim_machine_typeinfo); +} + +type_init(or1ksim_machine_init_register_types) |