| /* |
| * QEMU fuloong 2e mini pc support |
| * |
| * Copyright (c) 2008 yajin (yajin@vm-kernel.org) |
| * Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn) |
| * Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com) |
| * This code is licensed under the GNU GPL v2. |
| * |
| * Contributions after 2012-01-13 are licensed under the terms of the |
| * GNU GPL, version 2 or (at your option) any later version. |
| */ |
| |
| /* |
| * Fuloong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz) |
| * https://www.linux-mips.org/wiki/Fuloong_2E |
| * |
| * Loongson 2e manuals: |
| * https://github.com/loongson-community/docs/tree/master/2E |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/datadir.h" |
| #include "qemu/units.h" |
| #include "qapi/error.h" |
| #include "cpu.h" |
| #include "hw/clock.h" |
| #include "net/net.h" |
| #include "hw/boards.h" |
| #include "hw/i2c/smbus_eeprom.h" |
| #include "hw/block/flash.h" |
| #include "hw/mips/mips.h" |
| #include "hw/mips/bootloader.h" |
| #include "hw/pci/pci.h" |
| #include "hw/loader.h" |
| #include "hw/ide/pci.h" |
| #include "hw/qdev-properties.h" |
| #include "elf.h" |
| #include "hw/isa/vt82c686.h" |
| #include "system/qtest.h" |
| #include "system/reset.h" |
| #include "system/system.h" |
| #include "qemu/error-report.h" |
| #include "exec/tswap.h" |
| |
| #define ENVP_PADDR 0x2000 |
| #define ENVP_VADDR cpu_mips_phys_to_kseg0(NULL, ENVP_PADDR) |
| #define ENVP_NB_ENTRIES 16 |
| #define ENVP_ENTRY_SIZE 256 |
| |
| /* Fuloong 2e has a 512k flash: Winbond W39L040AP70Z */ |
| #define BIOS_SIZE (512 * KiB) |
| |
| /* |
| * PMON is not part of qemu and released with BSD license, anyone |
| * who want to build a pmon binary please first git-clone the source |
| * from the git repository at: |
| * https://github.com/loongson-community/pmon |
| */ |
| #define FULOONG_BIOSNAME "pmon_2e.bin" |
| |
| /* PCI SLOT in Fuloong 2e */ |
| #define FULOONG2E_VIA_SLOT 5 |
| #define FULOONG2E_ATI_SLOT 6 |
| #define FULOONG2E_RTL8139_SLOT 7 |
| |
| static struct _loaderparams { |
| int ram_size; |
| const char *kernel_filename; |
| const char *kernel_cmdline; |
| const char *initrd_filename; |
| } loaderparams; |
| |
| static void G_GNUC_PRINTF(3, 4) prom_set(uint32_t *prom_buf, int index, |
| const char *string, ...) |
| { |
| va_list ap; |
| int32_t table_addr; |
| |
| if (index >= ENVP_NB_ENTRIES) { |
| return; |
| } |
| |
| if (string == NULL) { |
| prom_buf[index] = 0; |
| return; |
| } |
| |
| table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; |
| prom_buf[index] = tswap32(ENVP_VADDR + table_addr); |
| |
| va_start(ap, string); |
| vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); |
| va_end(ap); |
| } |
| |
| static uint64_t load_kernel(MIPSCPU *cpu) |
| { |
| uint64_t kernel_entry, kernel_high, initrd_size; |
| int index = 0; |
| long kernel_size; |
| ram_addr_t initrd_offset; |
| uint32_t *prom_buf; |
| long prom_size; |
| |
| kernel_size = load_elf(loaderparams.kernel_filename, NULL, |
| cpu_mips_kseg0_to_phys, NULL, |
| &kernel_entry, NULL, |
| &kernel_high, NULL, |
| ELFDATA2LSB, 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 = 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 parameters. */ |
| prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); |
| prom_buf = g_malloc(prom_size); |
| |
| prom_set(prom_buf, index++, "%s", loaderparams.kernel_filename); |
| if (initrd_size > 0) { |
| prom_set(prom_buf, index++, |
| "rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s", |
| cpu_mips_phys_to_kseg0(NULL, initrd_offset), |
| initrd_size, loaderparams.kernel_cmdline); |
| } else { |
| prom_set(prom_buf, index++, "%s", loaderparams.kernel_cmdline); |
| } |
| |
| /* Setup minimum environment variables */ |
| prom_set(prom_buf, index++, "busclock=33000000"); |
| prom_set(prom_buf, index++, "cpuclock=%u", clock_get_hz(cpu->clock)); |
| prom_set(prom_buf, index++, "memsize=%"PRIi64, loaderparams.ram_size / MiB); |
| prom_set(prom_buf, index++, NULL); |
| |
| rom_add_blob_fixed("prom", prom_buf, prom_size, ENVP_PADDR); |
| |
| g_free(prom_buf); |
| return kernel_entry; |
| } |
| |
| static void write_bootloader(CPUMIPSState *env, uint8_t *base, |
| uint64_t kernel_addr) |
| { |
| uint32_t *p; |
| |
| /* Small bootloader */ |
| p = (uint32_t *)base; |
| |
| /* j 0x1fc00040 */ |
| stl_p(p++, 0x0bf00010); |
| /* nop */ |
| stl_p(p++, 0x00000000); |
| |
| /* Second part of the bootloader */ |
| p = (uint32_t *)(base + 0x040); |
| |
| bl_gen_jump_kernel((void **)&p, |
| true, ENVP_VADDR - 64, |
| true, 2, true, ENVP_VADDR, |
| true, ENVP_VADDR + 8, |
| true, loaderparams.ram_size, |
| kernel_addr); |
| } |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| MIPSCPU *cpu = opaque; |
| CPUMIPSState *env = &cpu->env; |
| |
| cpu_reset(CPU(cpu)); |
| /* TODO: 2E reset stuff */ |
| if (loaderparams.kernel_filename) { |
| env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
| } |
| } |
| |
| /* Network support */ |
| static void network_init(PCIBus *pci_bus) |
| { |
| /* The Fuloong board has a RTL8139 card using PCI SLOT 7 */ |
| pci_init_nic_in_slot(pci_bus, "rtl8139", NULL, "07"); |
| pci_init_nic_devices(pci_bus, "rtl8139"); |
| } |
| |
| static void mips_fuloong2e_init(MachineState *machine) |
| { |
| const char *kernel_filename = machine->kernel_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| const char *initrd_filename = machine->initrd_filename; |
| char *filename; |
| MemoryRegion *address_space_mem = get_system_memory(); |
| MemoryRegion *bios = g_new(MemoryRegion, 1); |
| long bios_size; |
| uint8_t *spd_data; |
| uint64_t kernel_entry; |
| PCIDevice *pci_dev; |
| PCIBus *pci_bus; |
| I2CBus *smbus; |
| Clock *cpuclk; |
| MIPSCPU *cpu; |
| CPUMIPSState *env; |
| DeviceState *dev; |
| |
| cpuclk = clock_new(OBJECT(machine), "cpu-refclk"); |
| clock_set_hz(cpuclk, 533080000); /* ~533 MHz */ |
| |
| /* init CPUs */ |
| cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk, false); |
| env = &cpu->env; |
| |
| qemu_register_reset(main_cpu_reset, cpu); |
| |
| /* TODO: support more than 256M RAM as highmem */ |
| if (machine->ram_size != 256 * MiB) { |
| error_report("Invalid RAM size, should be 256MB"); |
| exit(EXIT_FAILURE); |
| } |
| memory_region_add_subregion(address_space_mem, 0, machine->ram); |
| |
| /* Boot ROM */ |
| memory_region_init_rom(bios, NULL, "fuloong2e.bios", BIOS_SIZE, |
| &error_fatal); |
| memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios); |
| |
| /* |
| * We do not support flash operation, just loading pmon.bin as raw BIOS. |
| * Please use -L to set the BIOS path and -bios to set bios name. |
| */ |
| |
| if (kernel_filename) { |
| loaderparams.ram_size = machine->ram_size; |
| loaderparams.kernel_filename = kernel_filename; |
| loaderparams.kernel_cmdline = kernel_cmdline; |
| loaderparams.initrd_filename = initrd_filename; |
| kernel_entry = load_kernel(cpu); |
| write_bootloader(env, memory_region_get_ram_ptr(bios), kernel_entry); |
| } else { |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, |
| machine->firmware ?: FULOONG_BIOSNAME); |
| if (filename) { |
| bios_size = load_image_targphys(filename, 0x1fc00000LL, |
| BIOS_SIZE); |
| g_free(filename); |
| } else { |
| bios_size = -1; |
| } |
| |
| if ((bios_size < 0 || bios_size > BIOS_SIZE) && |
| machine->firmware && !qtest_enabled()) { |
| error_report("Could not load MIPS bios '%s'", machine->firmware); |
| exit(1); |
| } |
| } |
| |
| /* Init internal devices */ |
| cpu_mips_irq_init_cpu(cpu); |
| cpu_mips_clock_init(cpu); |
| |
| /* North bridge, Bonito --> IP2 */ |
| pci_bus = bonito_init((qemu_irq *)&(env->irq[2])); |
| |
| /* South bridge -> IP5 */ |
| pci_dev = pci_new_multifunction(PCI_DEVFN(FULOONG2E_VIA_SLOT, 0), |
| TYPE_VT82C686B_ISA); |
| |
| /* Set properties on individual devices before realizing the south bridge */ |
| if (machine->audiodev) { |
| dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "ac97")); |
| qdev_prop_set_string(dev, "audiodev", machine->audiodev); |
| } |
| |
| pci_realize_and_unref(pci_dev, pci_bus, &error_abort); |
| |
| object_property_add_alias(OBJECT(machine), "rtc-time", |
| object_resolve_path_component(OBJECT(pci_dev), |
| "rtc"), |
| "date"); |
| qdev_connect_gpio_out_named(DEVICE(pci_dev), "intr", 0, env->irq[5]); |
| |
| dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "ide")); |
| pci_ide_create_devs(PCI_DEVICE(dev)); |
| |
| dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "pm")); |
| smbus = I2C_BUS(qdev_get_child_bus(dev, "i2c")); |
| |
| /* GPU */ |
| if (vga_interface_type != VGA_NONE) { |
| vga_interface_created = true; |
| pci_dev = pci_new(-1, "ati-vga"); |
| dev = DEVICE(pci_dev); |
| qdev_prop_set_uint32(dev, "vgamem_mb", 16); |
| qdev_prop_set_uint16(dev, "x-device-id", 0x5159); |
| pci_realize_and_unref(pci_dev, pci_bus, &error_fatal); |
| } |
| |
| /* Populate SPD eeprom data */ |
| spd_data = spd_data_generate(DDR, machine->ram_size); |
| smbus_eeprom_init_one(smbus, 0x50, spd_data); |
| |
| /* Network card: RTL8139D */ |
| network_init(pci_bus); |
| } |
| |
| static void mips_fuloong2e_machine_init(MachineClass *mc) |
| { |
| mc->desc = "Fuloong 2e mini pc"; |
| mc->init = mips_fuloong2e_init; |
| mc->block_default_type = IF_IDE; |
| mc->default_cpu_type = MIPS_CPU_TYPE_NAME("Loongson-2E"); |
| mc->default_ram_size = 256 * MiB; |
| mc->default_ram_id = "fuloong2e.ram"; |
| mc->minimum_page_bits = 14; |
| machine_add_audiodev_property(mc); |
| } |
| |
| DEFINE_MACHINE("fuloong2e", mips_fuloong2e_machine_init) |
