/* * 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. * * Contributions after 2012-01-13 are licensed under the terms of the * GNU GPL, version 2 or (at your option) any later version. */ /* * 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 "i8254.h" #include "blockdev.h" #include "exec-memory.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 ISADevice *pit; 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 (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 = 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=%li %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=%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 */ 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)); } /* 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; MemoryRegion *address_space_mem = get_system_memory(); MemoryRegion *ram = g_new(MemoryRegion, 1); MemoryRegion *bios = g_new(MemoryRegion, 1); long bios_size; int64_t kernel_entry; qemu_irq *i8259; qemu_irq *cpu_exit_irq; PCIBus *pci_bus; ISABus *isa_bus; i2c_bus *smbus; int i; DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; 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 */ memory_region_init_ram(ram, "fulong2e.ram", ram_size); vmstate_register_ram_global(ram); memory_region_init_ram(bios, "fulong2e.bios", bios_size); vmstate_register_ram_global(bios); memory_region_set_readonly(bios, true); memory_region_add_subregion(address_space_mem, 0, ram); 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 = 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 = FULONG_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) { 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); /* North bridge, Bonito --> IP2 */ pci_bus = bonito_init((qemu_irq *)&(env->irq[2])); /* South bridge */ ide_drive_get(hd, MAX_IDE_BUS); isa_bus = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0)); if (!isa_bus) { fprintf(stderr, "vt82c686b_init error\n"); exit(1); } /* Interrupt controller */ /* The 8259 -> IP5 */ i8259 = i8259_init(isa_bus, env->irq[5]); isa_bus_irqs(isa_bus, 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); /* TODO: Populate SPD eeprom data. */ smbus_eeprom_init(smbus, 1, eeprom_spd, sizeof(eeprom_spd)); /* init other devices */ pit = pit_init(isa_bus, 0x40, 0); cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); DMA_init(0, cpu_exit_irq); /* Super I/O */ isa_create_simple(isa_bus, "i8042"); rtc_init(isa_bus, 2000, NULL); for(i = 0; i < MAX_SERIAL_PORTS; i++) { if (serial_hds[i]) { serial_isa_init(isa_bus, i, serial_hds[i]); } } if (parallel_hds[0]) { parallel_init(isa_bus, 0, parallel_hds[0]); } /* Sound card */ audio_init(pci_bus); /* 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);