diff options
Diffstat (limited to 'hw/mips/fuloong2e.c')
| -rw-r--r-- | hw/mips/fuloong2e.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/hw/mips/fuloong2e.c b/hw/mips/fuloong2e.c new file mode 100644 index 0000000000..f583c44b79 --- /dev/null +++ b/hw/mips/fuloong2e.c @@ -0,0 +1,397 @@ +/* + * 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; + 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) { + dev = DEVICE(pci_create(pci_bus, -1, "ati-vga")); + qdev_prop_set_uint32(dev, "vgamem_mb", 16); + qdev_prop_set_uint16(dev, "x-device-id", 0x5159); + qdev_init_nofail(dev); + } + + /* 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"; +} + +DEFINE_MACHINE("fuloong2e", mips_fuloong2e_machine_init) |