| /* |
| * QEMU fulong 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. |
| */ |
| |
| /* |
| * Fulong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz) |
| * http://www.linux-mips.org/wiki/Fulong |
| * |
| * Loongson 2e user manual: |
| * http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf |
| */ |
| |
| #include "hw.h" |
| #include "pc.h" |
| #include "fdc.h" |
| #include "net.h" |
| #include "boards.h" |
| #include "smbus.h" |
| #include "block.h" |
| #include "flash.h" |
| #include "mips.h" |
| #include "mips_cpudevs.h" |
| #include "pci.h" |
| #include "usb-uhci.h" |
| #include "qemu-char.h" |
| #include "sysemu.h" |
| #include "audio/audio.h" |
| #include "qemu-log.h" |
| #include "loader.h" |
| #include "mips-bios.h" |
| #include "ide.h" |
| #include "elf.h" |
| #include "vt82c686.h" |
| #include "mc146818rtc.h" |
| #include "blockdev.h" |
| |
| #define DEBUG_FULONG2E_INIT |
| |
| #define ENVP_ADDR 0x80002000l |
| #define ENVP_NB_ENTRIES 16 |
| #define ENVP_ENTRY_SIZE 256 |
| |
| #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 FULONG_BIOSNAME "pmon_fulong2e.bin" |
| |
| /* PCI SLOT in fulong 2e */ |
| #define FULONG2E_VIA_SLOT 5 |
| #define FULONG2E_ATI_SLOT 6 |
| #define FULONG2E_RTL8139_SLOT 7 |
| |
| static PITState *pit; |
| |
| static struct _loaderparams { |
| int ram_size; |
| const char *kernel_filename; |
| const char *kernel_cmdline; |
| const char *initrd_filename; |
| } loaderparams; |
| |
| static void 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 (CPUState *env) |
| { |
| int64_t kernel_entry, kernel_low, kernel_high; |
| int index = 0; |
| long initrd_size; |
| ram_addr_t initrd_offset; |
| uint32_t *prom_buf; |
| long prom_size; |
| |
| if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL, |
| (uint64_t *)&kernel_entry, (uint64_t *)&kernel_low, |
| (uint64_t *)&kernel_high, 0, ELF_MACHINE, 1) < 0) { |
| fprintf(stderr, "qemu: could not load kernel '%s'\n", |
| loaderparams.kernel_filename); |
| 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 + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; |
| if (initrd_offset + initrd_size > ram_size) { |
| fprintf(stderr, |
| "qemu: memory too small for initial ram disk '%s'\n", |
| 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) { |
| fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", |
| loaderparams.initrd_filename); |
| exit(1); |
| } |
| } |
| |
| /* Setup prom parameters. */ |
| prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); |
| prom_buf = qemu_malloc(prom_size); |
| |
| prom_set(prom_buf, index++, loaderparams.kernel_filename); |
| if (initrd_size > 0) { |
| prom_set(prom_buf, index++, "rd_start=0x" PRIx64 " rd_size=%li %s", |
| cpu_mips_phys_to_kseg0(NULL, initrd_offset), initrd_size, |
| loaderparams.kernel_cmdline); |
| } else { |
| prom_set(prom_buf, index++, 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=%i", loaderparams.ram_size/1024/1024); |
| 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)); |
| |
| return kernel_entry; |
| } |
| |
| static void write_bootloader (CPUState *env, uint8_t *base, int64_t kernel_addr) |
| { |
| uint32_t *p; |
| |
| /* Small bootloader */ |
| p = (uint32_t *) base; |
| |
| stl_raw(p++, 0x0bf00010); /* j 0x1fc00040 */ |
| stl_raw(p++, 0x00000000); /* nop */ |
| |
| /* Second part of the bootloader */ |
| p = (uint32_t *) (base + 0x040); |
| |
| stl_raw(p++, 0x3c040000); /* lui a0, 0 */ |
| stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */ |
| stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ |
| stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */ |
| stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ |
| stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ |
| stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */ |
| stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ |
| stl_raw(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */; |
| stl_raw(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */ |
| stl_raw(p++, 0x03e00008); /* jr ra */ |
| stl_raw(p++, 0x00000000); /* nop */ |
| } |
| |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| CPUState *env = opaque; |
| |
| cpu_reset(env); |
| /* TODO: 2E reset stuff */ |
| if (loaderparams.kernel_filename) { |
| env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
| } |
| } |
| |
| uint8_t eeprom_spd[0x80] = { |
| 0x80,0x08,0x07,0x0d,0x09,0x02,0x40,0x00,0x04,0x70, |
| 0x70,0x00,0x82,0x10,0x00,0x01,0x0e,0x04,0x0c,0x01, |
| 0x02,0x20,0x80,0x75,0x70,0x00,0x00,0x50,0x3c,0x50, |
| 0x2d,0x20,0xb0,0xb0,0x50,0x50,0x00,0x00,0x00,0x00, |
| 0x00,0x41,0x48,0x3c,0x32,0x75,0x00,0x00,0x00,0x00, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x00,0x00,0x00,0x9c,0x7b,0x07,0x00,0x00,0x00,0x00, |
| 0x00,0x00,0x00,0x00,0x48,0x42,0x35,0x34,0x41,0x32, |
| 0x35,0x36,0x38,0x4b,0x4e,0x2d,0x41,0x37,0x35,0x42, |
| 0x20,0x30,0x20 |
| }; |
| |
| /* Audio support */ |
| #ifdef HAS_AUDIO |
| static void audio_init (PCIBus *pci_bus) |
| { |
| vt82c686b_ac97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 5)); |
| vt82c686b_mc97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 6)); |
| } |
| #endif |
| |
| /* Network support */ |
| static void network_init (void) |
| { |
| 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 fulong board has a RTL8139 card using PCI SLOT 7 */ |
| default_devaddr = "07"; |
| } |
| |
| pci_nic_init_nofail(nd, "rtl8139", default_devaddr); |
| } |
| } |
| |
| static void cpu_request_exit(void *opaque, int irq, int level) |
| { |
| CPUState *env = cpu_single_env; |
| |
| if (env && level) { |
| cpu_exit(env); |
| } |
| } |
| |
| static void mips_fulong2e_init(ram_addr_t ram_size, const char *boot_device, |
| const char *kernel_filename, const char *kernel_cmdline, |
| const char *initrd_filename, const char *cpu_model) |
| { |
| char *filename; |
| unsigned long ram_offset, bios_offset; |
| unsigned long bios_size; |
| int64_t kernel_entry; |
| qemu_irq *i8259; |
| qemu_irq *cpu_exit_irq; |
| int via_devfn; |
| PCIBus *pci_bus; |
| ISADevice *isa_dev; |
| uint8_t *eeprom_buf; |
| i2c_bus *smbus; |
| int i; |
| DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
| DeviceState *eeprom; |
| ISADevice *rtc_state; |
| CPUState *env; |
| |
| /* init CPUs */ |
| if (cpu_model == NULL) { |
| cpu_model = "Loongson-2E"; |
| } |
| env = cpu_init(cpu_model); |
| if (!env) { |
| fprintf(stderr, "Unable to find CPU definition\n"); |
| exit(1); |
| } |
| |
| register_savevm(NULL, "cpu", 0, 3, cpu_save, cpu_load, env); |
| qemu_register_reset(main_cpu_reset, env); |
| |
| /* fulong 2e has 256M ram. */ |
| ram_size = 256 * 1024 * 1024; |
| |
| /* fulong 2e has a 1M flash.Winbond W39L040AP70Z */ |
| bios_size = 1024 * 1024; |
| |
| /* allocate RAM */ |
| ram_offset = qemu_ram_alloc(NULL, "fulong2e.ram", ram_size); |
| bios_offset = qemu_ram_alloc(NULL, "fulong2e.bios", bios_size); |
| |
| cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); |
| cpu_register_physical_memory(0x1fc00000LL, |
| bios_size, bios_offset | IO_MEM_ROM); |
| |
| /* 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 = 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, qemu_get_ram_ptr(bios_offset), kernel_entry); |
| } else { |
| if (bios_name == NULL) { |
| bios_name = FULONG_BIOSNAME; |
| } |
| filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
| if (filename) { |
| bios_size = load_image_targphys(filename, 0x1fc00000LL, |
| BIOS_SIZE); |
| qemu_free(filename); |
| } else { |
| bios_size = -1; |
| } |
| |
| if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) { |
| fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n", bios_name); |
| exit(1); |
| } |
| } |
| |
| /* Init internal devices */ |
| cpu_mips_irq_init_cpu(env); |
| cpu_mips_clock_init(env); |
| |
| /* Interrupt controller */ |
| /* The 8259 -> IP5 */ |
| i8259 = i8259_init(env->irq[5]); |
| |
| /* North bridge, Bonito --> IP2 */ |
| pci_bus = bonito_init((qemu_irq *)&(env->irq[2])); |
| |
| /* South bridge */ |
| if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) { |
| fprintf(stderr, "qemu: too many IDE bus\n"); |
| exit(1); |
| } |
| |
| for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) { |
| hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); |
| } |
| |
| via_devfn = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0)); |
| if (via_devfn < 0) { |
| fprintf(stderr, "vt82c686b_init error \n"); |
| exit(1); |
| } |
| |
| isa_bus_irqs(i8259); |
| vt82c686b_ide_init(pci_bus, hd, PCI_DEVFN(FULONG2E_VIA_SLOT, 1)); |
| usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2)); |
| usb_uhci_vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3)); |
| |
| smbus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 4), |
| 0xeee1, NULL); |
| eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
| memcpy(eeprom_buf, eeprom_spd, sizeof(eeprom_spd)); |
| /* TODO: Populate SPD eeprom data. */ |
| eeprom = qdev_create((BusState *)smbus, "smbus-eeprom"); |
| qdev_prop_set_uint8(eeprom, "address", 0x50); |
| qdev_prop_set_ptr(eeprom, "data", eeprom_buf); |
| qdev_init_nofail(eeprom); |
| |
| /* init other devices */ |
| pit = pit_init(0x40, isa_reserve_irq(0)); |
| cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); |
| DMA_init(0, cpu_exit_irq); |
| |
| /* Super I/O */ |
| isa_dev = isa_create_simple("i8042"); |
| |
| rtc_state = rtc_init(2000, NULL); |
| |
| for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
| if (serial_hds[i]) { |
| serial_isa_init(i, serial_hds[i]); |
| } |
| } |
| |
| if (parallel_hds[0]) { |
| parallel_init(0, parallel_hds[0]); |
| } |
| |
| /* Sound card */ |
| #ifdef HAS_AUDIO |
| audio_init(pci_bus); |
| #endif |
| /* Network card */ |
| network_init(); |
| } |
| |
| QEMUMachine mips_fulong2e_machine = { |
| .name = "fulong2e", |
| .desc = "Fulong 2e mini pc", |
| .init = mips_fulong2e_init, |
| }; |
| |
| static void mips_fulong2e_machine_init(void) |
| { |
| qemu_register_machine(&mips_fulong2e_machine); |
| } |
| |
| machine_init(mips_fulong2e_machine_init); |
