| /* |
| * Generic Loongson-3 Platform support |
| * |
| * Copyright (c) 2018-2020 Huacai Chen (chenhc@lemote.com) |
| * Copyright (c) 2018-2020 Jiaxun Yang <jiaxun.yang@flygoat.com> |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that 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 <https://www.gnu.org/licenses/>. |
| */ |
| |
| /* |
| * Generic virtualized PC Platform based on Loongson-3 CPU (MIPS64R2 with |
| * extensions, 800~2000MHz) |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/cutils.h" |
| #include "qemu/datadir.h" |
| #include "qapi/error.h" |
| #include "elf.h" |
| #include "hw/char/serial.h" |
| #include "hw/intc/loongson_liointc.h" |
| #include "hw/mips/mips.h" |
| #include "hw/mips/fw_cfg.h" |
| #include "hw/mips/loongson3_bootp.h" |
| #include "hw/misc/unimp.h" |
| #include "hw/intc/i8259.h" |
| #include "hw/loader.h" |
| #include "hw/isa/superio.h" |
| #include "hw/pci/msi.h" |
| #include "hw/pci/pci.h" |
| #include "hw/pci/pci_host.h" |
| #include "hw/pci-host/gpex.h" |
| #include "hw/usb.h" |
| #include "net/net.h" |
| #include "sysemu/kvm.h" |
| #include "sysemu/qtest.h" |
| #include "sysemu/reset.h" |
| #include "sysemu/runstate.h" |
| #include "qemu/error-report.h" |
| |
| #define PM_CNTL_MODE 0x10 |
| |
| #define LOONGSON_MAX_VCPUS 16 |
| |
| /* |
| * Loongson-3's virtual machine BIOS can be obtained here: |
| * 1, https://github.com/loongson-community/firmware-nonfree |
| * 2, http://dev.lemote.com:8000/files/firmware/UEFI/KVM/bios_loongson3.bin |
| */ |
| #define LOONGSON3_BIOSNAME "bios_loongson3.bin" |
| |
| #define UART_IRQ 0 |
| #define RTC_IRQ 1 |
| #define PCIE_IRQ_BASE 2 |
| |
| const MemMapEntry virt_memmap[] = { |
| [VIRT_LOWMEM] = { 0x00000000, 0x10000000 }, |
| [VIRT_PM] = { 0x10080000, 0x100 }, |
| [VIRT_FW_CFG] = { 0x10080100, 0x100 }, |
| [VIRT_RTC] = { 0x10081000, 0x1000 }, |
| [VIRT_PCIE_PIO] = { 0x18000000, 0x80000 }, |
| [VIRT_PCIE_ECAM] = { 0x1a000000, 0x2000000 }, |
| [VIRT_BIOS_ROM] = { 0x1fc00000, 0x200000 }, |
| [VIRT_UART] = { 0x1fe001e0, 0x8 }, |
| [VIRT_LIOINTC] = { 0x3ff01400, 0x64 }, |
| [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, |
| [VIRT_HIGHMEM] = { 0x80000000, 0x0 }, /* Variable */ |
| }; |
| |
| static const MemMapEntry loader_memmap[] = { |
| [LOADER_KERNEL] = { 0x00000000, 0x4000000 }, |
| [LOADER_INITRD] = { 0x04000000, 0x0 }, /* Variable */ |
| [LOADER_CMDLINE] = { 0x0ff00000, 0x100000 }, |
| }; |
| |
| static const MemMapEntry loader_rommap[] = { |
| [LOADER_BOOTROM] = { 0x1fc00000, 0x1000 }, |
| [LOADER_PARAM] = { 0x1fc01000, 0x10000 }, |
| }; |
| |
| struct LoongsonMachineState { |
| MachineState parent_obj; |
| MemoryRegion *pio_alias; |
| MemoryRegion *mmio_alias; |
| MemoryRegion *ecam_alias; |
| }; |
| typedef struct LoongsonMachineState LoongsonMachineState; |
| |
| #define TYPE_LOONGSON_MACHINE MACHINE_TYPE_NAME("loongson3-virt") |
| DECLARE_INSTANCE_CHECKER(LoongsonMachineState, LOONGSON_MACHINE, TYPE_LOONGSON_MACHINE) |
| |
| static struct _loaderparams { |
| uint64_t cpu_freq; |
| uint64_t ram_size; |
| const char *kernel_cmdline; |
| const char *kernel_filename; |
| const char *initrd_filename; |
| uint64_t kernel_entry; |
| uint64_t a0, a1, a2; |
| } loaderparams; |
| |
| static uint64_t loongson3_pm_read(void *opaque, hwaddr addr, unsigned size) |
| { |
| return 0; |
| } |
| |
| static void loongson3_pm_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| if (addr != PM_CNTL_MODE) { |
| return; |
| } |
| |
| switch (val) { |
| case 0x00: |
| qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| return; |
| case 0x01: |
| qemu_system_suspend_request(); |
| return; |
| case 0xff: |
| qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); |
| return; |
| default: |
| return; |
| } |
| } |
| |
| static const MemoryRegionOps loongson3_pm_ops = { |
| .read = loongson3_pm_read, |
| .write = loongson3_pm_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 1 |
| } |
| }; |
| |
| #define DEF_LOONGSON3_FREQ (800 * 1000 * 1000) |
| |
| static uint64_t get_cpu_freq_hz(void) |
| { |
| #ifdef CONFIG_KVM |
| int ret; |
| uint64_t freq; |
| struct kvm_one_reg freq_reg = { |
| .id = KVM_REG_MIPS_COUNT_HZ, |
| .addr = (uintptr_t)(&freq) |
| }; |
| |
| if (kvm_enabled()) { |
| ret = kvm_vcpu_ioctl(first_cpu, KVM_GET_ONE_REG, &freq_reg); |
| if (ret >= 0) { |
| return freq * 2; |
| } |
| } |
| #endif |
| return DEF_LOONGSON3_FREQ; |
| } |
| |
| static void init_boot_param(void) |
| { |
| static void *p; |
| struct boot_params *bp; |
| |
| p = g_malloc0(loader_rommap[LOADER_PARAM].size); |
| bp = p; |
| |
| bp->efi.smbios.vers = cpu_to_le16(1); |
| init_reset_system(&(bp->reset_system)); |
| p += ROUND_UP(sizeof(struct boot_params), 64); |
| init_loongson_params(&(bp->efi.smbios.lp), p, |
| loaderparams.cpu_freq, loaderparams.ram_size); |
| |
| rom_add_blob_fixed("params_rom", bp, |
| loader_rommap[LOADER_PARAM].size, |
| loader_rommap[LOADER_PARAM].base); |
| |
| g_free(bp); |
| |
| loaderparams.a2 = cpu_mips_phys_to_kseg0(NULL, |
| loader_rommap[LOADER_PARAM].base); |
| } |
| |
| static void init_boot_rom(void) |
| { |
| const unsigned int boot_code[] = { |
| 0x40086000, /* mfc0 t0, CP0_STATUS */ |
| 0x240900E4, /* li t1, 0xe4 #set kx, sx, ux, erl */ |
| 0x01094025, /* or t0, t0, t1 */ |
| 0x3C090040, /* lui t1, 0x40 #set bev */ |
| 0x01094025, /* or t0, t0, t1 */ |
| 0x40886000, /* mtc0 t0, CP0_STATUS */ |
| 0x00000000, |
| 0x40806800, /* mtc0 zero, CP0_CAUSE */ |
| 0x00000000, |
| 0x400A7801, /* mfc0 t2, $15, 1 */ |
| 0x314A00FF, /* andi t2, 0x0ff */ |
| 0x3C089000, /* dli t0, 0x900000003ff01000 */ |
| 0x00084438, |
| 0x35083FF0, |
| 0x00084438, |
| 0x35081000, |
| 0x314B0003, /* andi t3, t2, 0x3 #local cpuid */ |
| 0x000B5A00, /* sll t3, 8 */ |
| 0x010B4025, /* or t0, t0, t3 */ |
| 0x314C000C, /* andi t4, t2, 0xc #node id */ |
| 0x000C62BC, /* dsll t4, 42 */ |
| 0x010C4025, /* or t0, t0, t4 */ |
| /* WaitForInit: */ |
| 0xDD020020, /* ld v0, FN_OFF(t0) #FN_OFF 0x020 */ |
| 0x1040FFFE, /* beqz v0, WaitForInit */ |
| 0x00000000, /* nop */ |
| 0xDD1D0028, /* ld sp, SP_OFF(t0) #FN_OFF 0x028 */ |
| 0xDD1C0030, /* ld gp, GP_OFF(t0) #FN_OFF 0x030 */ |
| 0xDD050038, /* ld a1, A1_OFF(t0) #FN_OFF 0x038 */ |
| 0x00400008, /* jr v0 #byebye */ |
| 0x00000000, /* nop */ |
| 0x1000FFFF, /* 1: b 1b */ |
| 0x00000000, /* nop */ |
| |
| /* Reset */ |
| 0x3C0C9000, /* dli t0, 0x9000000010080010 */ |
| 0x358C0000, |
| 0x000C6438, |
| 0x358C1008, |
| 0x000C6438, |
| 0x358C0010, |
| 0x240D0000, /* li t1, 0x00 */ |
| 0xA18D0000, /* sb t1, (t0) */ |
| 0x1000FFFF, /* 1: b 1b */ |
| 0x00000000, /* nop */ |
| |
| /* Shutdown */ |
| 0x3C0C9000, /* dli t0, 0x9000000010080010 */ |
| 0x358C0000, |
| 0x000C6438, |
| 0x358C1008, |
| 0x000C6438, |
| 0x358C0010, |
| 0x240D00FF, /* li t1, 0xff */ |
| 0xA18D0000, /* sb t1, (t0) */ |
| 0x1000FFFF, /* 1: b 1b */ |
| 0x00000000, /* nop */ |
| /* Suspend */ |
| 0x3C0C9000, /* dli t0, 0x9000000010080010 */ |
| 0x358C0000, |
| 0x000C6438, |
| 0x358C1008, |
| 0x000C6438, |
| 0x358C0010, |
| 0x240D0001, /* li t1, 0x01 */ |
| 0xA18D0000, /* sb t1, (t0) */ |
| 0x03e00008, /* jr ra */ |
| 0x00000000 /* nop */ |
| }; |
| |
| rom_add_blob_fixed("boot_rom", boot_code, sizeof(boot_code), |
| loader_rommap[LOADER_BOOTROM].base); |
| } |
| |
| static void fw_cfg_boot_set(void *opaque, const char *boot_device, |
| Error **errp) |
| { |
| fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); |
| } |
| |
| static void fw_conf_init(unsigned long ram_size) |
| { |
| static const uint8_t suspend[6] = {128, 0, 0, 129, 128, 128}; |
| FWCfgState *fw_cfg; |
| hwaddr cfg_addr = virt_memmap[VIRT_FW_CFG].base; |
| |
| fw_cfg = fw_cfg_init_mem_wide(cfg_addr, cfg_addr + 8, 8, 0, NULL); |
| fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)current_machine->smp.cpus); |
| fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)current_machine->smp.max_cpus); |
| fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_MACHINE_VERSION, 1); |
| fw_cfg_add_i64(fw_cfg, FW_CFG_CPU_FREQ, get_cpu_freq_hz()); |
| |
| fw_cfg_add_file(fw_cfg, "etc/system-states", |
| g_memdup2(suspend, sizeof(suspend)), sizeof(suspend)); |
| |
| qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); |
| } |
| |
| static int set_prom_cmdline(ram_addr_t initrd_offset, long initrd_size) |
| { |
| int ret = 0; |
| void *cmdline_buf; |
| hwaddr cmdline_vaddr; |
| unsigned int *parg_env; |
| |
| /* Allocate cmdline_buf for command line. */ |
| cmdline_buf = g_malloc0(loader_memmap[LOADER_CMDLINE].size); |
| cmdline_vaddr = cpu_mips_phys_to_kseg0(NULL, |
| loader_memmap[LOADER_CMDLINE].base); |
| |
| /* |
| * Layout of cmdline_buf looks like this: |
| * argv[0], argv[1], 0, env[0], env[1], ... env[i], 0, |
| * argv[0]'s data, argv[1]'s data, env[0]'data, ..., env[i]'s data, 0 |
| */ |
| parg_env = (void *)cmdline_buf; |
| |
| ret = (3 + 1) * 4; |
| *parg_env++ = cmdline_vaddr + ret; |
| ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "g")); |
| |
| /* argv1 */ |
| *parg_env++ = cmdline_vaddr + ret; |
| if (initrd_size > 0) |
| ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, |
| "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s", |
| cpu_mips_phys_to_kseg0(NULL, initrd_offset), |
| initrd_size, loaderparams.kernel_cmdline)); |
| else |
| ret += (1 + snprintf(cmdline_buf + ret, 256 - ret, "%s", |
| loaderparams.kernel_cmdline)); |
| |
| /* argv2 */ |
| *parg_env++ = cmdline_vaddr + 4 * ret; |
| |
| rom_add_blob_fixed("cmdline", cmdline_buf, |
| loader_memmap[LOADER_CMDLINE].size, |
| loader_memmap[LOADER_CMDLINE].base); |
| |
| g_free(cmdline_buf); |
| |
| loaderparams.a0 = 2; |
| loaderparams.a1 = cmdline_vaddr; |
| |
| return 0; |
| } |
| |
| static uint64_t load_kernel(CPUMIPSState *env) |
| { |
| long kernel_size; |
| ram_addr_t initrd_offset; |
| uint64_t kernel_entry, kernel_low, kernel_high, initrd_size; |
| |
| kernel_size = load_elf(loaderparams.kernel_filename, NULL, |
| cpu_mips_kseg0_to_phys, NULL, |
| (uint64_t *)&kernel_entry, |
| (uint64_t *)&kernel_low, (uint64_t *)&kernel_high, |
| NULL, 0, EM_MIPS, 1, 0); |
| if (kernel_size < 0) { |
| error_report("could not load kernel '%s': %s", |
| loaderparams.kernel_filename, |
| load_elf_strerror(kernel_size)); |
| exit(1); |
| } |
| |
| /* load initrd */ |
| initrd_size = 0; |
| initrd_offset = 0; |
| if (loaderparams.initrd_filename) { |
| initrd_size = get_image_size(loaderparams.initrd_filename); |
| if (initrd_size > 0) { |
| initrd_offset = MAX(loader_memmap[LOADER_INITRD].base, |
| ROUND_UP(kernel_high, INITRD_PAGE_SIZE)); |
| |
| if (initrd_offset + initrd_size > loaderparams.ram_size) { |
| error_report("memory too small for initial ram disk '%s'", |
| loaderparams.initrd_filename); |
| exit(1); |
| } |
| |
| initrd_size = load_image_targphys(loaderparams.initrd_filename, |
| initrd_offset, |
| loaderparams.ram_size - initrd_offset); |
| } |
| |
| if (initrd_size == (target_ulong) -1) { |
| error_report("could not load initial ram disk '%s'", |
| loaderparams.initrd_filename); |
| exit(1); |
| } |
| } |
| |
| /* Setup prom cmdline. */ |
| set_prom_cmdline(initrd_offset, initrd_size); |
| |
| return kernel_entry; |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| MIPSCPU *cpu = opaque; |
| CPUMIPSState *env = &cpu->env; |
| |
| cpu_reset(CPU(cpu)); |
| |
| /* Loongson-3 reset stuff */ |
| if (loaderparams.kernel_filename) { |
| if (cpu == MIPS_CPU(first_cpu)) { |
| env->active_tc.gpr[4] = loaderparams.a0; |
| env->active_tc.gpr[5] = loaderparams.a1; |
| env->active_tc.gpr[6] = loaderparams.a2; |
| env->active_tc.PC = loaderparams.kernel_entry; |
| } |
| env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
| } |
| } |
| |
| static inline void loongson3_virt_devices_init(MachineState *machine, |
| DeviceState *pic) |
| { |
| int i; |
| qemu_irq irq; |
| PCIBus *pci_bus; |
| DeviceState *dev; |
| MemoryRegion *mmio_reg, *ecam_reg; |
| MachineClass *mc = MACHINE_GET_CLASS(machine); |
| LoongsonMachineState *s = LOONGSON_MACHINE(machine); |
| |
| dev = qdev_new(TYPE_GPEX_HOST); |
| sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); |
| pci_bus = PCI_HOST_BRIDGE(dev)->bus; |
| |
| s->ecam_alias = g_new0(MemoryRegion, 1); |
| ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); |
| memory_region_init_alias(s->ecam_alias, OBJECT(dev), "pcie-ecam", |
| ecam_reg, 0, virt_memmap[VIRT_PCIE_ECAM].size); |
| memory_region_add_subregion(get_system_memory(), |
| virt_memmap[VIRT_PCIE_ECAM].base, |
| s->ecam_alias); |
| |
| s->mmio_alias = g_new0(MemoryRegion, 1); |
| mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); |
| memory_region_init_alias(s->mmio_alias, OBJECT(dev), "pcie-mmio", |
| mmio_reg, virt_memmap[VIRT_PCIE_MMIO].base, |
| virt_memmap[VIRT_PCIE_MMIO].size); |
| memory_region_add_subregion(get_system_memory(), |
| virt_memmap[VIRT_PCIE_MMIO].base, |
| s->mmio_alias); |
| |
| s->pio_alias = g_new0(MemoryRegion, 1); |
| memory_region_init_alias(s->pio_alias, OBJECT(dev), "pcie-pio", |
| get_system_io(), 0, |
| virt_memmap[VIRT_PCIE_PIO].size); |
| memory_region_add_subregion(get_system_memory(), |
| virt_memmap[VIRT_PCIE_PIO].base, s->pio_alias); |
| sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, virt_memmap[VIRT_PCIE_PIO].base); |
| |
| for (i = 0; i < GPEX_NUM_IRQS; i++) { |
| irq = qdev_get_gpio_in(pic, PCIE_IRQ_BASE + i); |
| sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); |
| gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ_BASE + i); |
| } |
| msi_nonbroken = true; |
| |
| pci_vga_init(pci_bus); |
| |
| if (defaults_enabled() && object_class_by_name("pci-ohci")) { |
| USBBus *usb_bus; |
| |
| pci_create_simple(pci_bus, -1, "pci-ohci"); |
| usb_bus = USB_BUS(object_resolve_type_unambiguous(TYPE_USB_BUS, |
| &error_abort)); |
| usb_create_simple(usb_bus, "usb-kbd"); |
| usb_create_simple(usb_bus, "usb-tablet"); |
| } |
| |
| pci_init_nic_devices(pci_bus, mc->default_nic); |
| } |
| |
| static void mips_loongson3_virt_init(MachineState *machine) |
| { |
| int i; |
| long bios_size; |
| MIPSCPU *cpu; |
| Clock *cpuclk; |
| CPUMIPSState *env; |
| DeviceState *liointc; |
| char *filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| const char *kernel_filename = machine->kernel_filename; |
| const char *initrd_filename = machine->initrd_filename; |
| ram_addr_t ram_size = machine->ram_size; |
| MemoryRegion *address_space_mem = get_system_memory(); |
| MemoryRegion *ram = g_new(MemoryRegion, 1); |
| MemoryRegion *bios = g_new(MemoryRegion, 1); |
| MemoryRegion *iomem = g_new(MemoryRegion, 1); |
| |
| /* TODO: TCG will support all CPU types */ |
| if (!kvm_enabled()) { |
| if (!machine->cpu_type) { |
| machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A1000"); |
| } |
| if (!cpu_type_supports_isa(machine->cpu_type, INSN_LOONGSON3A)) { |
| error_report("Loongson-3/TCG needs a Loongson-3 series cpu"); |
| exit(1); |
| } |
| } else { |
| if (!machine->cpu_type) { |
| machine->cpu_type = MIPS_CPU_TYPE_NAME("Loongson-3A4000"); |
| } |
| if (!strstr(machine->cpu_type, "Loongson-3A4000")) { |
| error_report("Loongson-3/KVM needs cpu type Loongson-3A4000"); |
| exit(1); |
| } |
| } |
| |
| if (ram_size < 512 * MiB) { |
| error_report("Loongson-3 machine needs at least 512MB memory"); |
| exit(1); |
| } |
| |
| /* |
| * The whole MMIO range among configure registers doesn't generate |
| * exception when accessing invalid memory. Create some unimplememted |
| * devices to emulate this feature. |
| */ |
| create_unimplemented_device("mmio fallback 0", 0x10000000, 256 * MiB); |
| create_unimplemented_device("mmio fallback 1", 0x30000000, 256 * MiB); |
| |
| liointc = qdev_new("loongson.liointc"); |
| sysbus_realize_and_unref(SYS_BUS_DEVICE(liointc), &error_fatal); |
| |
| sysbus_mmio_map(SYS_BUS_DEVICE(liointc), 0, virt_memmap[VIRT_LIOINTC].base); |
| |
| serial_mm_init(address_space_mem, virt_memmap[VIRT_UART].base, 0, |
| qdev_get_gpio_in(liointc, UART_IRQ), 115200, serial_hd(0), |
| DEVICE_NATIVE_ENDIAN); |
| |
| sysbus_create_simple("goldfish_rtc", virt_memmap[VIRT_RTC].base, |
| qdev_get_gpio_in(liointc, RTC_IRQ)); |
| |
| cpuclk = clock_new(OBJECT(machine), "cpu-refclk"); |
| clock_set_hz(cpuclk, DEF_LOONGSON3_FREQ); |
| |
| for (i = 0; i < machine->smp.cpus; i++) { |
| int ip; |
| |
| /* init CPUs */ |
| cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk); |
| |
| /* Init internal devices */ |
| cpu_mips_irq_init_cpu(cpu); |
| cpu_mips_clock_init(cpu); |
| qemu_register_reset(main_cpu_reset, cpu); |
| |
| if (i >= 4) { |
| continue; /* Only node-0 can be connected to LIOINTC */ |
| } |
| |
| for (ip = 0; ip < 4 ; ip++) { |
| int pin = i * 4 + ip; |
| sysbus_connect_irq(SYS_BUS_DEVICE(liointc), |
| pin, cpu->env.irq[ip + 2]); |
| } |
| } |
| env = &MIPS_CPU(first_cpu)->env; |
| |
| /* Allocate RAM/BIOS, 0x00000000~0x10000000 is alias of 0x80000000~0x90000000 */ |
| memory_region_init_rom(bios, NULL, "loongson3.bios", |
| virt_memmap[VIRT_BIOS_ROM].size, &error_fatal); |
| memory_region_init_alias(ram, NULL, "loongson3.lowmem", |
| machine->ram, 0, virt_memmap[VIRT_LOWMEM].size); |
| memory_region_init_io(iomem, NULL, &loongson3_pm_ops, |
| NULL, "loongson3_pm", virt_memmap[VIRT_PM].size); |
| qemu_register_wakeup_support(); |
| |
| memory_region_add_subregion(address_space_mem, |
| virt_memmap[VIRT_LOWMEM].base, ram); |
| memory_region_add_subregion(address_space_mem, |
| virt_memmap[VIRT_BIOS_ROM].base, bios); |
| memory_region_add_subregion(address_space_mem, |
| virt_memmap[VIRT_HIGHMEM].base, machine->ram); |
| memory_region_add_subregion(address_space_mem, |
| virt_memmap[VIRT_PM].base, iomem); |
| |
| /* |
| * We do not support flash operation, just loading bios.bin as raw BIOS. |
| * Please use -L to set the BIOS path and -bios to set bios name. |
| */ |
| |
| if (kernel_filename) { |
| loaderparams.cpu_freq = get_cpu_freq_hz(); |
| loaderparams.ram_size = ram_size; |
| loaderparams.kernel_filename = kernel_filename; |
| loaderparams.kernel_cmdline = kernel_cmdline; |
| loaderparams.initrd_filename = initrd_filename; |
| loaderparams.kernel_entry = load_kernel(env); |
| |
| init_boot_rom(); |
| init_boot_param(); |
| } else { |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, |
| machine->firmware ?: LOONGSON3_BIOSNAME); |
| if (filename) { |
| bios_size = load_image_targphys(filename, |
| virt_memmap[VIRT_BIOS_ROM].base, |
| virt_memmap[VIRT_BIOS_ROM].size); |
| g_free(filename); |
| } else { |
| bios_size = -1; |
| } |
| |
| if ((bios_size < 0 || bios_size > virt_memmap[VIRT_BIOS_ROM].size) && |
| !kernel_filename && !qtest_enabled()) { |
| error_report("Could not load MIPS bios '%s'", machine->firmware); |
| exit(1); |
| } |
| |
| fw_conf_init(ram_size); |
| } |
| |
| loongson3_virt_devices_init(machine, liointc); |
| } |
| |
| static void loongson3v_machine_class_init(ObjectClass *oc, void *data) |
| { |
| MachineClass *mc = MACHINE_CLASS(oc); |
| |
| mc->desc = "Loongson-3 Virtualization Platform"; |
| mc->init = mips_loongson3_virt_init; |
| mc->block_default_type = IF_IDE; |
| mc->max_cpus = LOONGSON_MAX_VCPUS; |
| mc->default_ram_id = "loongson3.highram"; |
| mc->default_ram_size = 1600 * MiB; |
| mc->minimum_page_bits = 14; |
| mc->default_nic = "virtio-net-pci"; |
| } |
| |
| static const TypeInfo loongson3_machine_types[] = { |
| { |
| .name = TYPE_LOONGSON_MACHINE, |
| .parent = TYPE_MACHINE, |
| .instance_size = sizeof(LoongsonMachineState), |
| .class_init = loongson3v_machine_class_init, |
| } |
| }; |
| |
| DEFINE_TYPES(loongson3_machine_types) |
