| /* |
| * 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 user manual: |
| * http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu-common.h" |
| #include "qemu/units.h" |
| #include "qapi/error.h" |
| #include "cpu.h" |
| #include "hw/intc/i8259.h" |
| #include "hw/dma/i8257.h" |
| #include "hw/isa/superio.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/cpudevs.h" |
| #include "hw/pci/pci.h" |
| #include "qemu/log.h" |
| #include "hw/loader.h" |
| #include "hw/ide/pci.h" |
| #include "elf.h" |
| #include "hw/isa/vt82c686.h" |
| #include "hw/rtc/mc146818rtc.h" |
| #include "hw/timer/i8254.h" |
| #include "exec/address-spaces.h" |
| #include "sysemu/qtest.h" |
| #include "sysemu/reset.h" |
| #include "qemu/error-report.h" |
| |
| #define DEBUG_FULOONG2E_INIT |
| |
| #define ENVP_ADDR 0x80002000l |
| #define ENVP_NB_ENTRIES 16 |
| #define ENVP_ENTRY_SIZE 256 |
| |
| /* Fuloong 2e has a 512k flash: Winbond W39L040AP70Z */ |
| #define BIOS_SIZE (512 * KiB) |
| #define MAX_IDE_BUS 2 |
| |
| /* |
| * 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: |
| * http://www.loongson.cn/support/git/pmon |
| * Then follow the "Compile Guide" available at: |
| * http://dev.lemote.com/code/pmon |
| * |
| * Notes: |
| * 1, don't use the source at http://dev.lemote.com/http_git/pmon.git |
| * 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware" |
| * in the "Compile Guide". |
| */ |
| #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 GCC_FMT_ATTR(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_ADDR + table_addr); |
| |
| va_start(ap, string); |
| vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); |
| va_end(ap); |
| } |
| |
| static int64_t load_kernel(CPUMIPSState *env) |
| { |
| int64_t kernel_entry, kernel_low, 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, |
| (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 = (kernel_high + ~INITRD_PAGE_MASK) & |
| INITRD_PAGE_MASK; |
| if (initrd_offset + initrd_size > 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, |
| 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=100000000"); |
| prom_set(prom_buf, index++, "memsize=%"PRIi64, loaderparams.ram_size / MiB); |
| prom_set(prom_buf, index++, "modetty0=38400n8r"); |
| prom_set(prom_buf, index++, NULL); |
| |
| rom_add_blob_fixed("prom", prom_buf, prom_size, |
| cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR)); |
| |
| g_free(prom_buf); |
| return kernel_entry; |
| } |
| |
| static void write_bootloader(CPUMIPSState *env, uint8_t *base, |
| int64_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); |
| |
| /* lui a0, 0 */ |
| stl_p(p++, 0x3c040000); |
| /* ori a0, a0, 2 */ |
| stl_p(p++, 0x34840002); |
| /* lui a1, high(ENVP_ADDR) */ |
| stl_p(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); |
| /* ori a1, a0, low(ENVP_ADDR) */ |
| stl_p(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); |
| /* lui a2, high(ENVP_ADDR + 8) */ |
| stl_p(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); |
| /* ori a2, a2, low(ENVP_ADDR + 8) */ |
| stl_p(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); |
| /* lui a3, high(env->ram_size) */ |
| stl_p(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); |
| /* ori a3, a3, low(env->ram_size) */ |
| stl_p(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); |
| /* lui ra, high(kernel_addr) */ |
| stl_p(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); |
| /* ori ra, ra, low(kernel_addr) */ |
| stl_p(p++, 0x37ff0000 | (kernel_addr & 0xffff)); |
| /* jr ra */ |
| stl_p(p++, 0x03e00008); |
| /* nop */ |
| stl_p(p++, 0x00000000); |
| } |
| |
| 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)); |
| } |
| } |
| |
| static void vt82c686b_southbridge_init(PCIBus *pci_bus, int slot, qemu_irq intc, |
| I2CBus **i2c_bus, ISABus **p_isa_bus) |
| { |
| qemu_irq *i8259; |
| ISABus *isa_bus; |
| PCIDevice *dev; |
| |
| isa_bus = vt82c686b_isa_init(pci_bus, PCI_DEVFN(slot, 0)); |
| if (!isa_bus) { |
| fprintf(stderr, "vt82c686b_init error\n"); |
| exit(1); |
| } |
| *p_isa_bus = isa_bus; |
| /* Interrupt controller */ |
| /* The 8259 -> IP5 */ |
| i8259 = i8259_init(isa_bus, intc); |
| isa_bus_irqs(isa_bus, i8259); |
| /* init other devices */ |
| i8254_pit_init(isa_bus, 0x40, 0, NULL); |
| i8257_dma_init(isa_bus, 0); |
| /* Super I/O */ |
| isa_create_simple(isa_bus, TYPE_VT82C686B_SUPERIO); |
| |
| dev = pci_create_simple(pci_bus, PCI_DEVFN(slot, 1), "via-ide"); |
| pci_ide_create_devs(dev); |
| |
| pci_create_simple(pci_bus, PCI_DEVFN(slot, 2), "vt82c686b-usb-uhci"); |
| pci_create_simple(pci_bus, PCI_DEVFN(slot, 3), "vt82c686b-usb-uhci"); |
| |
| *i2c_bus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(slot, 4), 0xeee1, NULL); |
| |
| /* Audio support */ |
| vt82c686b_ac97_init(pci_bus, PCI_DEVFN(slot, 5)); |
| vt82c686b_mc97_init(pci_bus, PCI_DEVFN(slot, 6)); |
| } |
| |
| /* Network support */ |
| static void network_init(PCIBus *pci_bus) |
| { |
| int i; |
| |
| for (i = 0; i < nb_nics; i++) { |
| NICInfo *nd = &nd_table[i]; |
| const char *default_devaddr = NULL; |
| |
| if (i == 0 && (!nd->model || strcmp(nd->model, "rtl8139") == 0)) { |
| /* The Fuloong board has a RTL8139 card using PCI SLOT 7 */ |
| default_devaddr = "07"; |
| } |
| |
| pci_nic_init_nofail(nd, pci_bus, "rtl8139", default_devaddr); |
| } |
| } |
| |
| 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; |
| int64_t kernel_entry; |
| PCIDevice *pci_dev; |
| PCIBus *pci_bus; |
| ISABus *isa_bus; |
| I2CBus *smbus; |
| MIPSCPU *cpu; |
| CPUMIPSState *env; |
| DeviceState *dev; |
| |
| /* init CPUs */ |
| cpu = MIPS_CPU(cpu_create(machine->cpu_type)); |
| 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(env); |
| write_bootloader(env, memory_region_get_ram_ptr(bios), kernel_entry); |
| } else { |
| if (bios_name == NULL) { |
| bios_name = FULOONG_BIOSNAME; |
| } |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
| 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) && |
| !kernel_filename && !qtest_enabled()) { |
| error_report("Could not load MIPS bios '%s'", bios_name); |
| 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 */ |
| vt82c686b_southbridge_init(pci_bus, FULOONG2E_VIA_SLOT, env->irq[5], |
| &smbus, &isa_bus); |
| |
| /* GPU */ |
| if (vga_interface_type != VGA_NONE) { |
| 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); |
| |
| mc146818_rtc_init(isa_bus, 2000, NULL); |
| |
| /* Network card: RTL8139D */ |
| network_init(pci_bus); |
| } |
| |
| static void mips_fuloong2e_machine_init(MachineClass *mc) |
| { |
| mc->desc = "Fuloong 2e mini pc"; |
| mc->alias = "fulong2e"; /* Incorrect name used up to QEMU 4.2 */ |
| 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; |
| } |
| |
| DEFINE_MACHINE("fuloong2e", mips_fuloong2e_machine_init) |
