diff options
Diffstat (limited to 'qemu/hw/mips/mips_fulong2e.c')
| -rw-r--r-- | qemu/hw/mips/mips_fulong2e.c | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/qemu/hw/mips/mips_fulong2e.c b/qemu/hw/mips/mips_fulong2e.c new file mode 100644 index 000000000..dea941ad8 --- /dev/null +++ b/qemu/hw/mips/mips_fulong2e.c @@ -0,0 +1,406 @@ +/* + * 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/hw.h" +#include "hw/i386/pc.h" +#include "hw/char/serial.h" +#include "hw/block/fdc.h" +#include "net/net.h" +#include "hw/boards.h" +#include "hw/i2c/smbus.h" +#include "sysemu/block-backend.h" +#include "hw/block/flash.h" +#include "hw/mips/mips.h" +#include "hw/mips/cpudevs.h" +#include "hw/pci/pci.h" +#include "sysemu/char.h" +#include "sysemu/sysemu.h" +#include "audio/audio.h" +#include "qemu/log.h" +#include "hw/loader.h" +#include "hw/mips/bios.h" +#include "hw/ide.h" +#include "elf.h" +#include "hw/isa/vt82c686.h" +#include "hw/timer/mc146818rtc.h" +#include "hw/timer/i8254.h" +#include "sysemu/blockdev.h" +#include "exec/address-spaces.h" +#include "sysemu/qtest.h" +#include "qemu/error-report.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 (CPUMIPSState *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 + ~INITRD_PAGE_MASK) & INITRD_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)); + + 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; + + stl_p(p++, 0x0bf00010); /* j 0x1fc00040 */ + stl_p(p++, 0x00000000); /* nop */ + + /* Second part of the bootloader */ + p = (uint32_t *) (base + 0x040); + + stl_p(p++, 0x3c040000); /* lui a0, 0 */ + stl_p(p++, 0x34840002); /* ori a0, a0, 2 */ + stl_p(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ + stl_p(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */ + stl_p(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ + stl_p(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ + stl_p(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */ + stl_p(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ + stl_p(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */; + stl_p(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */ + stl_p(p++, 0x03e00008); /* jr ra */ + stl_p(p++, 0x00000000); /* nop */ +} + + +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 const 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 (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 fulong board has a RTL8139 card using PCI SLOT 7 */ + default_devaddr = "07"; + } + + pci_nic_init_nofail(nd, pci_bus, "rtl8139", default_devaddr); + } +} + +static void cpu_request_exit(void *opaque, int irq, int level) +{ + CPUState *cpu = current_cpu; + + if (cpu && level) { + cpu_exit(cpu); + } +} + +static void mips_fulong2e_init(MachineState *machine) +{ + ram_addr_t ram_size = machine->ram_size; + const char *cpu_model = machine->cpu_model; + 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 *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; + I2CBus *smbus; + DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; + MIPSCPU *cpu; + CPUMIPSState *env; + + /* init CPUs */ + if (cpu_model == NULL) { + cpu_model = "Loongson-2E"; + } + cpu = cpu_mips_init(cpu_model); + if (cpu == NULL) { + fprintf(stderr, "Unable to find CPU definition\n"); + exit(1); + } + env = &cpu->env; + + qemu_register_reset(main_cpu_reset, cpu); + + /* 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_allocate_system_memory(ram, NULL, "fulong2e.ram", ram_size); + memory_region_init_ram(bios, NULL, "fulong2e.bios", bios_size, + &error_abort); + 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 && !qtest_enabled()) { + error_report("Could not load MIPS bios '%s'", 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, ARRAY_SIZE(hd)); + + 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)); + pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2), + "vt82c686b-usb-uhci"); + pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3), + "vt82c686b-usb-uhci"); + + 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, NULL); + 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); + + serial_hds_isa_init(isa_bus, MAX_SERIAL_PORTS); + parallel_hds_isa_init(isa_bus, 1); + + /* Sound card */ + audio_init(pci_bus); + /* Network card */ + network_init(pci_bus); +} + +static 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); |