Archipelago » qemu

/*

 * Model of Petalogix linux reference design targeting Xilinx Spartan ml605

 * board.

 *

 * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>

 * Copyright (c) 2011 PetaLogix

 * Copyright (c) 2009 Edgar E. Iglesias.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "hw/sysbus.h"

#include "hw/hw.h"

#include "net/net.h"

#include "hw/block/flash.h"

#include "sysemu/sysemu.h"

#include "hw/arm/devices.h"

#include "hw/boards.h"

#include "hw/xilinx.h"

#include "sysemu/blockdev.h"

#include "hw/char/serial.h"

#include "exec/address-spaces.h"

#include "hw/ssi.h"

#include "boot.h"

#include "pic_cpu.h"

#include "hw/stream.h"

#define LMB_BRAM_SIZE  (128 * 1024)

#define FLASH_SIZE     (32 * 1024 * 1024)

#define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"

#define NUM_SPI_FLASHES 4

#define MEMORY_BASEADDR 0x50000000

#define FLASH_BASEADDR 0x86000000

#define INTC_BASEADDR 0x81800000

#define TIMER_BASEADDR 0x83c00000

#define UART16550_BASEADDR 0x83e00000

#define AXIENET_BASEADDR 0x82780000

#define AXIDMA_BASEADDR 0x84600000

static void machine_cpu_reset(MicroBlazeCPU *cpu)

{

    CPUMBState *env = &cpu->env;

    env->pvr.regs[10] = 0x0e000000; /* virtex 6 */

    /* setup pvr to match kernel setting */

    env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;

    env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;

    env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);

    env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;

    env->pvr.regs[4] = 0xc56b8000;

    env->pvr.regs[5] = 0xc56be000;

}

static void

petalogix_ml605_init(QEMUMachineInitArgs *args)

{

    ram_addr_t ram_size = args->ram_size;

    const char *cpu_model = args->cpu_model;

    MemoryRegion *address_space_mem = get_system_memory();

    DeviceState *dev, *dma, *eth0;

    MicroBlazeCPU *cpu;

    SysBusDevice *busdev;

    CPUMBState *env;

    DriveInfo *dinfo;

    int i;

    hwaddr ddr_base = MEMORY_BASEADDR;

    MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);

    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);

    qemu_irq irq[32], *cpu_irq;

    /* init CPUs */

    if (cpu_model == NULL) {

        cpu_model = "microblaze";

    }

    cpu = cpu_mb_init(cpu_model);

    env = &cpu->env;

    /* Attach emulated BRAM through the LMB.  */

    memory_region_init_ram(phys_lmb_bram, "petalogix_ml605.lmb_bram",

                           LMB_BRAM_SIZE);

    vmstate_register_ram_global(phys_lmb_bram);

    memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);

    memory_region_init_ram(phys_ram, "petalogix_ml605.ram", ram_size);

    vmstate_register_ram_global(phys_ram);

    memory_region_add_subregion(address_space_mem, ddr_base, phys_ram);

    dinfo = drive_get(IF_PFLASH, 0, 0);

    /* 5th parameter 2 means bank-width

     * 10th paremeter 0 means little-endian */

    pflash_cfi01_register(FLASH_BASEADDR,

                          NULL, "petalogix_ml605.flash", FLASH_SIZE,

                          dinfo ? dinfo->bdrv : NULL, (64 * 1024),

                          FLASH_SIZE >> 16,

                          2, 0x89, 0x18, 0x0000, 0x0, 0);

    cpu_irq = microblaze_pic_init_cpu(env);

    dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);

    for (i = 0; i < 32; i++) {

        irq[i] = qdev_get_gpio_in(dev, i);

    }

    serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,

                   irq[5], 115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);

    /* 2 timers at irq 2 @ 100 Mhz.  */

    xilinx_timer_create(TIMER_BASEADDR, irq[2], 0, 100 * 1000000);

    /* axi ethernet and dma initialization. */

    qemu_check_nic_model(&nd_table[0], "xlnx.axi-ethernet");

    eth0 = qdev_create(NULL, "xlnx.axi-ethernet");

    dma = qdev_create(NULL, "xlnx.axi-dma");

    /* FIXME: attach to the sysbus instead */

    object_property_add_child(container_get(qdev_get_machine(), "/unattached"),

                                  "xilinx-dma", OBJECT(dma), NULL);

    xilinx_axiethernet_init(eth0, &nd_table[0], STREAM_SLAVE(dma),

                                   0x82780000, irq[3], 0x1000, 0x1000);

    xilinx_axidma_init(dma, STREAM_SLAVE(eth0), 0x84600000, irq[1], irq[0],

                       100 * 1000000);

    {

        SSIBus *spi;

        dev = qdev_create(NULL, "xlnx.xps-spi");

        qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);

        qdev_init_nofail(dev);

        busdev = SYS_BUS_DEVICE(dev);

        sysbus_mmio_map(busdev, 0, 0x40a00000);

        sysbus_connect_irq(busdev, 0, irq[4]);

        spi = (SSIBus *)qdev_get_child_bus(dev, "spi");

        for (i = 0; i < NUM_SPI_FLASHES; i++) {

            qemu_irq cs_line;

            dev = ssi_create_slave(spi, "n25q128");

            cs_line = qdev_get_gpio_in(dev, 0);

            sysbus_connect_irq(busdev, i+1, cs_line);

        }

    }

    microblaze_load_kernel(cpu, ddr_base, ram_size, BINARY_DEVICE_TREE_FILE,

                                                            machine_cpu_reset);

}

static QEMUMachine petalogix_ml605_machine = {

    .name = "petalogix-ml605",

    .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",

    .init = petalogix_ml605_init,

    .is_default = 0,

    DEFAULT_MACHINE_OPTIONS,

};

static void petalogix_ml605_machine_init(void)

{

    qemu_register_machine(&petalogix_ml605_machine);

}

machine_init(petalogix_ml605_machine_init);