/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * QEMU loongson 3a5000 develop board emulation * * Copyright (c) 2021 Loongson Technology Corporation Limited */ #include "qemu/osdep.h" #include "qemu/units.h" #include "qemu/datadir.h" #include "qapi/error.h" #include "hw/boards.h" #include "hw/char/serial.h" #include "sysemu/sysemu.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" #include "sysemu/reset.h" #include "sysemu/rtc.h" #include "hw/loongarch/virt.h" #include "exec/address-spaces.h" #include "hw/irq.h" #include "net/net.h" #include "hw/loader.h" #include "elf.h" #include "hw/intc/loongarch_ipi.h" #include "hw/intc/loongarch_extioi.h" #include "hw/intc/loongarch_pch_pic.h" #include "hw/intc/loongarch_pch_msi.h" #include "hw/pci-host/ls7a.h" #include "hw/pci-host/gpex.h" #include "hw/misc/unimp.h" #include "hw/loongarch/fw_cfg.h" #include "target/loongarch/cpu.h" #include "hw/firmware/smbios.h" #include "hw/acpi/aml-build.h" #include "qapi/qapi-visit-common.h" #include "hw/acpi/generic_event_device.h" #include "hw/mem/nvdimm.h" #include "sysemu/device_tree.h" #include #include "hw/core/sysbus-fdt.h" #include "hw/platform-bus.h" #include "hw/display/ramfb.h" #include "hw/mem/pc-dimm.h" #include "sysemu/tpm.h" static void fdt_add_rtc_node(LoongArchMachineState *lams) { char *nodename; hwaddr base = VIRT_RTC_REG_BASE; hwaddr size = VIRT_RTC_LEN; MachineState *ms = MACHINE(lams); nodename = g_strdup_printf("/rtc@%" PRIx64, base); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongson,ls7a-rtc"); qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size); g_free(nodename); } static void fdt_add_uart_node(LoongArchMachineState *lams) { char *nodename; hwaddr base = VIRT_UART_BASE; hwaddr size = VIRT_UART_SIZE; MachineState *ms = MACHINE(lams); nodename = g_strdup_printf("/serial@%" PRIx64, base); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "ns16550a"); qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0, base, 0x0, size); qemu_fdt_setprop_cell(ms->fdt, nodename, "clock-frequency", 100000000); qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename); g_free(nodename); } static void create_fdt(LoongArchMachineState *lams) { MachineState *ms = MACHINE(lams); ms->fdt = create_device_tree(&lams->fdt_size); if (!ms->fdt) { error_report("create_device_tree() failed"); exit(1); } /* Header */ qemu_fdt_setprop_string(ms->fdt, "/", "compatible", "linux,dummy-loongson3"); qemu_fdt_setprop_cell(ms->fdt, "/", "#address-cells", 0x2); qemu_fdt_setprop_cell(ms->fdt, "/", "#size-cells", 0x2); qemu_fdt_add_subnode(ms->fdt, "/chosen"); } static void fdt_add_cpu_nodes(const LoongArchMachineState *lams) { int num; const MachineState *ms = MACHINE(lams); int smp_cpus = ms->smp.cpus; qemu_fdt_add_subnode(ms->fdt, "/cpus"); qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", 0x1); qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0); /* cpu nodes */ for (num = smp_cpus - 1; num >= 0; num--) { char *nodename = g_strdup_printf("/cpus/cpu@%d", num); LoongArchCPU *cpu = LOONGARCH_CPU(qemu_get_cpu(num)); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu"); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", cpu->dtb_compatible); qemu_fdt_setprop_cell(ms->fdt, nodename, "reg", num); qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", qemu_fdt_alloc_phandle(ms->fdt)); g_free(nodename); } /*cpu map */ qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map"); for (num = smp_cpus - 1; num >= 0; num--) { char *cpu_path = g_strdup_printf("/cpus/cpu@%d", num); char *map_path; if (ms->smp.threads > 1) { map_path = g_strdup_printf( "/cpus/cpu-map/socket%d/core%d/thread%d", num / (ms->smp.cores * ms->smp.threads), (num / ms->smp.threads) % ms->smp.cores, num % ms->smp.threads); } else { map_path = g_strdup_printf( "/cpus/cpu-map/socket%d/core%d", num / ms->smp.cores, num % ms->smp.cores); } qemu_fdt_add_path(ms->fdt, map_path); qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path); g_free(map_path); g_free(cpu_path); } } static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams) { char *nodename; hwaddr base = VIRT_FWCFG_BASE; const MachineState *ms = MACHINE(lams); nodename = g_strdup_printf("/fw_cfg@%" PRIx64, base); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "qemu,fw-cfg-mmio"); qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, 0x18); qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); g_free(nodename); } static void fdt_add_pcie_node(const LoongArchMachineState *lams) { char *nodename; hwaddr base_mmio = VIRT_PCI_MEM_BASE; hwaddr size_mmio = VIRT_PCI_MEM_SIZE; hwaddr base_pio = VIRT_PCI_IO_BASE; hwaddr size_pio = VIRT_PCI_IO_SIZE; hwaddr base_pcie = VIRT_PCI_CFG_BASE; hwaddr size_pcie = VIRT_PCI_CFG_SIZE; hwaddr base = base_pcie; const MachineState *ms = MACHINE(lams); nodename = g_strdup_printf("/pcie@%" PRIx64, base); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "pci-host-ecam-generic"); qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci"); qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3); qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2); qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0); qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0, PCIE_MMCFG_BUS(VIRT_PCI_CFG_SIZE - 1)); qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0); qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base_pcie, 2, size_pcie); qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges", 1, FDT_PCI_RANGE_IOPORT, 2, VIRT_PCI_IO_OFFSET, 2, base_pio, 2, size_pio, 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, 2, base_mmio, 2, size_mmio); g_free(nodename); } static void fdt_add_irqchip_node(LoongArchMachineState *lams) { MachineState *ms = MACHINE(lams); char *nodename; uint32_t irqchip_phandle; irqchip_phandle = qemu_fdt_alloc_phandle(ms->fdt); qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", irqchip_phandle); nodename = g_strdup_printf("/intc@%lx", VIRT_IOAPIC_REG_BASE); qemu_fdt_add_subnode(ms->fdt, nodename); qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3); qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0); qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2); qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2); qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongarch,ls7a"); qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, VIRT_IOAPIC_REG_BASE, 2, PCH_PIC_ROUTE_ENTRY_OFFSET); qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", irqchip_phandle); g_free(nodename); } #define PM_BASE 0x10080000 #define PM_SIZE 0x100 #define PM_CTRL 0x10 static void virt_build_smbios(LoongArchMachineState *lams) { MachineState *ms = MACHINE(lams); MachineClass *mc = MACHINE_GET_CLASS(lams); uint8_t *smbios_tables, *smbios_anchor; size_t smbios_tables_len, smbios_anchor_len; const char *product = "QEMU Virtual Machine"; if (!lams->fw_cfg) { return; } smbios_set_defaults("QEMU", product, mc->name, false, true, SMBIOS_ENTRY_POINT_TYPE_64); smbios_get_tables(ms, NULL, 0, &smbios_tables, &smbios_tables_len, &smbios_anchor, &smbios_anchor_len, &error_fatal); if (smbios_anchor) { fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-tables", smbios_tables, smbios_tables_len); fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-anchor", smbios_anchor, smbios_anchor_len); } } static void virt_machine_done(Notifier *notifier, void *data) { LoongArchMachineState *lams = container_of(notifier, LoongArchMachineState, machine_done); virt_build_smbios(lams); loongarch_acpi_setup(lams); } struct memmap_entry { uint64_t address; uint64_t length; uint32_t type; uint32_t reserved; }; static struct memmap_entry *memmap_table; static unsigned memmap_entries; static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type) { /* Ensure there are no duplicate entries. */ for (unsigned i = 0; i < memmap_entries; i++) { assert(memmap_table[i].address != address); } memmap_table = g_renew(struct memmap_entry, memmap_table, memmap_entries + 1); memmap_table[memmap_entries].address = cpu_to_le64(address); memmap_table[memmap_entries].length = cpu_to_le64(length); memmap_table[memmap_entries].type = cpu_to_le32(type); memmap_table[memmap_entries].reserved = 0; memmap_entries++; } /* * This is a placeholder for missing ACPI, * and will eventually be replaced. */ static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size) { return 0; } static void loongarch_virt_pm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { if (addr != PM_CTRL) { return; } switch (val) { case 0x00: qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); return; case 0xff: qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); return; default: return; } } static const MemoryRegionOps loongarch_virt_pm_ops = { .read = loongarch_virt_pm_read, .write = loongarch_virt_pm_write, .endianness = DEVICE_NATIVE_ENDIAN, .valid = { .min_access_size = 1, .max_access_size = 1 } }; static struct _loaderparams { uint64_t ram_size; const char *kernel_filename; const char *kernel_cmdline; const char *initrd_filename; } loaderparams; static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) { return addr & 0x1fffffffll; } static int64_t load_kernel_info(void) { uint64_t kernel_entry, kernel_low, kernel_high; ssize_t kernel_size; kernel_size = load_elf(loaderparams.kernel_filename, NULL, cpu_loongarch_virt_to_phys, NULL, &kernel_entry, &kernel_low, &kernel_high, NULL, 0, EM_LOONGARCH, 1, 0); if (kernel_size < 0) { error_report("could not load kernel '%s': %s", loaderparams.kernel_filename, load_elf_strerror(kernel_size)); exit(1); } return kernel_entry; } static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState *lams) { DeviceState *dev; MachineState *ms = MACHINE(lams); uint32_t event = ACPI_GED_PWR_DOWN_EVT; if (ms->ram_slots) { event |= ACPI_GED_MEM_HOTPLUG_EVT; } dev = qdev_new(TYPE_ACPI_GED); qdev_prop_set_uint32(dev, "ged-event", event); /* ged event */ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, VIRT_GED_EVT_ADDR); /* memory hotplug */ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, VIRT_GED_MEM_ADDR); /* ged regs used for reset and power down */ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR); sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - PCH_PIC_IRQ_OFFSET)); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); return dev; } static DeviceState *create_platform_bus(DeviceState *pch_pic) { DeviceState *dev; SysBusDevice *sysbus; int i, irq; MemoryRegion *sysmem = get_system_memory(); dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE); dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE); qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS); qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); sysbus = SYS_BUS_DEVICE(dev); for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) { irq = VIRT_PLATFORM_BUS_IRQ - PCH_PIC_IRQ_OFFSET + i; sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq)); } memory_region_add_subregion(sysmem, VIRT_PLATFORM_BUS_BASEADDRESS, sysbus_mmio_get_region(sysbus, 0)); return dev; } static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams) { DeviceState *gpex_dev; SysBusDevice *d; PCIBus *pci_bus; MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg; MemoryRegion *mmio_alias, *mmio_reg, *pm_mem; int i; gpex_dev = qdev_new(TYPE_GPEX_HOST); d = SYS_BUS_DEVICE(gpex_dev); sysbus_realize_and_unref(d, &error_fatal); pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus; lams->pci_bus = pci_bus; /* Map only part size_ecam bytes of ECAM space */ ecam_alias = g_new0(MemoryRegion, 1); ecam_reg = sysbus_mmio_get_region(d, 0); memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam", ecam_reg, 0, VIRT_PCI_CFG_SIZE); memory_region_add_subregion(get_system_memory(), VIRT_PCI_CFG_BASE, ecam_alias); /* Map PCI mem space */ mmio_alias = g_new0(MemoryRegion, 1); mmio_reg = sysbus_mmio_get_region(d, 1); memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio", mmio_reg, VIRT_PCI_MEM_BASE, VIRT_PCI_MEM_SIZE); memory_region_add_subregion(get_system_memory(), VIRT_PCI_MEM_BASE, mmio_alias); /* Map PCI IO port space. */ pio_alias = g_new0(MemoryRegion, 1); pio_reg = sysbus_mmio_get_region(d, 2); memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg, VIRT_PCI_IO_OFFSET, VIRT_PCI_IO_SIZE); memory_region_add_subregion(get_system_memory(), VIRT_PCI_IO_BASE, pio_alias); for (i = 0; i < GPEX_NUM_IRQS; i++) { sysbus_connect_irq(d, i, qdev_get_gpio_in(pch_pic, 16 + i)); gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i); } serial_mm_init(get_system_memory(), VIRT_UART_BASE, 0, qdev_get_gpio_in(pch_pic, VIRT_UART_IRQ - PCH_PIC_IRQ_OFFSET), 115200, serial_hd(0), DEVICE_LITTLE_ENDIAN); fdt_add_uart_node(lams); /* Network init */ for (i = 0; i < nb_nics; i++) { NICInfo *nd = &nd_table[i]; if (!nd->model) { nd->model = g_strdup("virtio"); } pci_nic_init_nofail(nd, pci_bus, nd->model, NULL); } /* * There are some invalid guest memory access. * Create some unimplemented devices to emulate this. */ create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4); sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE, qdev_get_gpio_in(pch_pic, VIRT_RTC_IRQ - PCH_PIC_IRQ_OFFSET)); fdt_add_rtc_node(lams); pm_mem = g_new(MemoryRegion, 1); memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops, NULL, "loongarch_virt_pm", PM_SIZE); memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); /* acpi ged */ lams->acpi_ged = create_acpi_ged(pch_pic, lams); /* platform bus */ lams->platform_bus_dev = create_platform_bus(pch_pic); } static void loongarch_irq_init(LoongArchMachineState *lams) { MachineState *ms = MACHINE(lams); DeviceState *pch_pic, *pch_msi, *cpudev; DeviceState *ipi, *extioi; SysBusDevice *d; LoongArchCPU *lacpu; CPULoongArchState *env; CPUState *cpu_state; int cpu, pin, i; ipi = qdev_new(TYPE_LOONGARCH_IPI); sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); /* * The connection of interrupts: * +-----+ +---------+ +-------+ * | IPI |--> | CPUINTC | <-- | Timer | * +-----+ +---------+ +-------+ * ^ * | * +---------+ * | EIOINTC | * +---------+ * ^ ^ * | | * +---------+ +---------+ * | PCH-PIC | | PCH-MSI | * +---------+ +---------+ * ^ ^ ^ * | | | * +--------+ +---------+ +---------+ * | UARTs | | Devices | | Devices | * +--------+ +---------+ +---------+ */ for (cpu = 0; cpu < ms->smp.cpus; cpu++) { cpu_state = qemu_get_cpu(cpu); cpudev = DEVICE(cpu_state); lacpu = LOONGARCH_CPU(cpu_state); env = &(lacpu->env); /* connect ipi irq to cpu irq */ qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); /* IPI iocsr memory region */ memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX, sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), cpu * 2)); memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR, sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), cpu * 2 + 1)); /* extioi iocsr memory region */ memory_region_add_subregion(&env->system_iocsr, APIC_BASE, sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), cpu)); } /* * connect ext irq to the cpu irq * cpu_pin[9:2] <= intc_pin[7:0] */ for (cpu = 0; cpu < ms->smp.cpus; cpu++) { cpudev = DEVICE(qemu_get_cpu(cpu)); for (pin = 0; pin < LS3A_INTC_IP; pin++) { qdev_connect_gpio_out(extioi, (cpu * 8 + pin), qdev_get_gpio_in(cpudev, pin + 2)); } } pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); d = SYS_BUS_DEVICE(pch_pic); sysbus_realize_and_unref(d, &error_fatal); memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE, sysbus_mmio_get_region(d, 0)); memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET, sysbus_mmio_get_region(d, 1)); memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO, sysbus_mmio_get_region(d, 2)); /* Connect 64 pch_pic irqs to extioi */ for (int i = 0; i < PCH_PIC_IRQ_NUM; i++) { qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); } pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); qdev_prop_set_uint32(pch_msi, "msi_irq_base", PCH_MSI_IRQ_START); d = SYS_BUS_DEVICE(pch_msi); sysbus_realize_and_unref(d, &error_fatal); sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); for (i = 0; i < PCH_MSI_IRQ_NUM; i++) { /* Connect 192 pch_msi irqs to extioi */ qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i + PCH_MSI_IRQ_START)); } loongarch_devices_init(pch_pic, lams); } static void loongarch_firmware_init(LoongArchMachineState *lams) { char *filename = MACHINE(lams)->firmware; char *bios_name = NULL; int bios_size; lams->bios_loaded = false; if (filename) { bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); if (!bios_name) { error_report("Could not find ROM image '%s'", filename); exit(1); } bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE); if (bios_size < 0) { error_report("Could not load ROM image '%s'", bios_name); exit(1); } g_free(bios_name); memory_region_init_ram(&lams->bios, NULL, "loongarch.bios", VIRT_BIOS_SIZE, &error_fatal); memory_region_set_readonly(&lams->bios, true); memory_region_add_subregion(get_system_memory(), VIRT_BIOS_BASE, &lams->bios); lams->bios_loaded = true; } } static void reset_load_elf(void *opaque) { LoongArchCPU *cpu = opaque; CPULoongArchState *env = &cpu->env; cpu_reset(CPU(cpu)); if (env->load_elf) { cpu_set_pc(CPU(cpu), env->elf_address); } } static void fw_cfg_add_kernel_info(FWCfgState *fw_cfg) { /* * Expose the kernel, the command line, and the initrd in fw_cfg. * We don't process them here at all, it's all left to the * firmware. */ load_image_to_fw_cfg(fw_cfg, FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA, loaderparams.kernel_filename, false); if (loaderparams.initrd_filename) { load_image_to_fw_cfg(fw_cfg, FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA, loaderparams.initrd_filename, false); } if (loaderparams.kernel_cmdline) { fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(loaderparams.kernel_cmdline) + 1); fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, loaderparams.kernel_cmdline); } } static void loongarch_firmware_boot(LoongArchMachineState *lams) { fw_cfg_add_kernel_info(lams->fw_cfg); } static void loongarch_direct_kernel_boot(LoongArchMachineState *lams) { MachineState *machine = MACHINE(lams); int64_t kernel_addr = 0; LoongArchCPU *lacpu; int i; kernel_addr = load_kernel_info(); if (!machine->firmware) { for (i = 0; i < machine->smp.cpus; i++) { lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); lacpu->env.load_elf = true; lacpu->env.elf_address = kernel_addr; } } } static void loongarch_init(MachineState *machine) { LoongArchCPU *lacpu; const char *cpu_model = machine->cpu_type; ram_addr_t offset = 0; ram_addr_t ram_size = machine->ram_size; uint64_t highram_size = 0; MemoryRegion *address_space_mem = get_system_memory(); LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); int i; hwaddr fdt_base; if (!cpu_model) { cpu_model = LOONGARCH_CPU_TYPE_NAME("la464"); } if (!strstr(cpu_model, "la464")) { error_report("LoongArch/TCG needs cpu type la464"); exit(1); } if (ram_size < 1 * GiB) { error_report("ram_size must be greater than 1G."); exit(1); } create_fdt(lams); /* Init CPUs */ for (i = 0; i < machine->smp.cpus; i++) { cpu_create(machine->cpu_type); } fdt_add_cpu_nodes(lams); /* Add memory region */ memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram", machine->ram, 0, 256 * MiB); memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); offset += 256 * MiB; memmap_add_entry(0, 256 * MiB, 1); highram_size = ram_size - 256 * MiB; memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", machine->ram, offset, highram_size); memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); memmap_add_entry(0x90000000, highram_size, 1); /* initialize device memory address space */ if (machine->ram_size < machine->maxram_size) { machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { error_report("unsupported amount of memory slots: %"PRIu64, machine->ram_slots); exit(EXIT_FAILURE); } if (QEMU_ALIGN_UP(machine->maxram_size, TARGET_PAGE_SIZE) != machine->maxram_size) { error_report("maximum memory size must by aligned to multiple of " "%d bytes", TARGET_PAGE_SIZE); exit(EXIT_FAILURE); } /* device memory base is the top of high memory address. */ machine->device_memory->base = 0x90000000 + highram_size; machine->device_memory->base = ROUND_UP(machine->device_memory->base, 1 * GiB); memory_region_init(&machine->device_memory->mr, OBJECT(lams), "device-memory", device_mem_size); memory_region_add_subregion(address_space_mem, machine->device_memory->base, &machine->device_memory->mr); } /* Add isa io region */ memory_region_init_alias(&lams->isa_io, NULL, "isa-io", get_system_io(), 0, VIRT_ISA_IO_SIZE); memory_region_add_subregion(address_space_mem, VIRT_ISA_IO_BASE, &lams->isa_io); /* load the BIOS image. */ loongarch_firmware_init(lams); /* fw_cfg init */ lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine); rom_set_fw(lams->fw_cfg); if (lams->fw_cfg != NULL) { fw_cfg_add_file(lams->fw_cfg, "etc/memmap", memmap_table, sizeof(struct memmap_entry) * (memmap_entries)); } fdt_add_fw_cfg_node(lams); loaderparams.ram_size = ram_size; loaderparams.kernel_filename = machine->kernel_filename; loaderparams.kernel_cmdline = machine->kernel_cmdline; loaderparams.initrd_filename = machine->initrd_filename; /* load the kernel. */ if (loaderparams.kernel_filename) { if (lams->bios_loaded) { loongarch_firmware_boot(lams); } else { loongarch_direct_kernel_boot(lams); } } /* register reset function */ for (i = 0; i < machine->smp.cpus; i++) { lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); qemu_register_reset(reset_load_elf, lacpu); } /* Initialize the IO interrupt subsystem */ loongarch_irq_init(lams); fdt_add_irqchip_node(lams); platform_bus_add_all_fdt_nodes(machine->fdt, "/intc", VIRT_PLATFORM_BUS_BASEADDRESS, VIRT_PLATFORM_BUS_SIZE, VIRT_PLATFORM_BUS_IRQ); lams->machine_done.notify = virt_machine_done; qemu_add_machine_init_done_notifier(&lams->machine_done); fdt_add_pcie_node(lams); /* * Since lowmem region starts from 0 and Linux kernel legacy start address * at 2 MiB, FDT base address is located at 1 MiB to avoid NULL pointer * access. FDT size limit with 1 MiB. * Put the FDT into the memory map as a ROM image: this will ensure * the FDT is copied again upon reset, even if addr points into RAM. */ fdt_base = 1 * MiB; qemu_fdt_dumpdtb(machine->fdt, lams->fdt_size); rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, fdt_base); } bool loongarch_is_acpi_enabled(LoongArchMachineState *lams) { if (lams->acpi == ON_OFF_AUTO_OFF) { return false; } return true; } static void loongarch_get_acpi(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); OnOffAuto acpi = lams->acpi; visit_type_OnOffAuto(v, name, &acpi, errp); } static void loongarch_set_acpi(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); visit_type_OnOffAuto(v, name, &lams->acpi, errp); } static void loongarch_machine_initfn(Object *obj) { LoongArchMachineState *lams = LOONGARCH_MACHINE(obj); lams->acpi = ON_OFF_AUTO_AUTO; lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); } static bool memhp_type_supported(DeviceState *dev) { /* we only support pc dimm now */ return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) && !object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); } static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); } static void virt_machine_device_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (memhp_type_supported(dev)) { virt_mem_pre_plug(hotplug_dev, dev, errp); } } static void virt_mem_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); /* the acpi ged is always exist */ hotplug_handler_unplug_request(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp); } static void virt_machine_device_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (memhp_type_supported(dev)) { virt_mem_unplug_request(hotplug_dev, dev, errp); } } static void virt_mem_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); hotplug_handler_unplug(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp); pc_dimm_unplug(PC_DIMM(dev), MACHINE(lams)); qdev_unrealize(dev); } static void virt_machine_device_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { if (memhp_type_supported(dev)) { virt_mem_unplug(hotplug_dev, dev, errp); } } static void virt_mem_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); pc_dimm_plug(PC_DIMM(dev), MACHINE(lams)); hotplug_handler_plug(HOTPLUG_HANDLER(lams->acpi_ged), dev, &error_abort); } static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); MachineClass *mc = MACHINE_GET_CLASS(lams); if (device_is_dynamic_sysbus(mc, dev)) { if (lams->platform_bus_dev) { platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev), SYS_BUS_DEVICE(dev)); } } else if (memhp_type_supported(dev)) { virt_mem_plug(hotplug_dev, dev, errp); } } static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, DeviceState *dev) { MachineClass *mc = MACHINE_GET_CLASS(machine); if (device_is_dynamic_sysbus(mc, dev) || memhp_type_supported(dev)) { return HOTPLUG_HANDLER(machine); } return NULL; } static void loongarch_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); mc->desc = "Loongson-3A5000 LS7A1000 machine"; mc->init = loongarch_init; mc->default_ram_size = 1 * GiB; mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464"); mc->default_ram_id = "loongarch.ram"; mc->max_cpus = LOONGARCH_MAX_VCPUS; mc->is_default = 1; mc->default_kernel_irqchip_split = false; mc->block_default_type = IF_VIRTIO; mc->default_boot_order = "c"; mc->no_cdrom = 1; mc->get_hotplug_handler = virt_machine_get_hotplug_handler; hc->plug = loongarch_machine_device_plug_cb; hc->pre_plug = virt_machine_device_pre_plug; hc->unplug_request = virt_machine_device_unplug_request; hc->unplug = virt_machine_device_unplug; object_class_property_add(oc, "acpi", "OnOffAuto", loongarch_get_acpi, loongarch_set_acpi, NULL, NULL); object_class_property_set_description(oc, "acpi", "Enable ACPI"); machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); #ifdef CONFIG_TPM machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS); #endif } static const TypeInfo loongarch_machine_types[] = { { .name = TYPE_LOONGARCH_MACHINE, .parent = TYPE_MACHINE, .instance_size = sizeof(LoongArchMachineState), .class_init = loongarch_class_init, .instance_init = loongarch_machine_initfn, .interfaces = (InterfaceInfo[]) { { TYPE_HOTPLUG_HANDLER }, { } }, } }; DEFINE_TYPES(loongarch_machine_types)