Archipelago » qemu

/*

 * Xilinx Zynq Baseboard System emulation.

 *

 * Copyright (c) 2010 Xilinx.

 * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.croshtwaite@petalogix.com)

 * Copyright (c) 2012 Petalogix Pty Ltd.

 * Written by Haibing Ma

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, see <http://www.gnu.org/licenses/>.

 */

#include "sysbus.h"

#include "arm-misc.h"

#include "net.h"

#include "exec-memory.h"

#include "sysemu.h"

#include "boards.h"

#include "flash.h"

#include "blockdev.h"

#include "loader.h"

#include "ssi.h"

#define NUM_SPI_FLASHES 4

#define FLASH_SIZE (64 * 1024 * 1024)

#define FLASH_SECTOR_SIZE (128 * 1024)

#define IRQ_OFFSET 32 /* pic interrupts start from index 32 */

static struct arm_boot_info zynq_binfo = {};

static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)

{

    DeviceState *dev;

    SysBusDevice *s;

    qemu_check_nic_model(nd, "cadence_gem");

    dev = qdev_create(NULL, "cadence_gem");

    qdev_set_nic_properties(dev, nd);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_mmio_map(s, 0, base);

    sysbus_connect_irq(s, 0, irq);

}

static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq)

{

    DeviceState *dev;

    SysBusDevice *busdev;

    SSIBus *spi;

    int i;

    dev = qdev_create(NULL, "xilinx,spips");

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    sysbus_mmio_map(busdev, 0, base_addr);

    sysbus_connect_irq(busdev, 0, irq);

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

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

        qemu_irq cs_line;

        dev = ssi_create_slave_no_init(spi, "m25p80");

        qdev_prop_set_string(dev, "partname", "n25q128");

        qdev_init_nofail(dev);

        cs_line = qdev_get_gpio_in(dev, 0);

        sysbus_connect_irq(busdev, i+1, cs_line);

    }

}

static void zynq_init(QEMUMachineInitArgs *args)

{

    ram_addr_t ram_size = args->ram_size;

    const char *cpu_model = args->cpu_model;

    const char *kernel_filename = args->kernel_filename;

    const char *kernel_cmdline = args->kernel_cmdline;

    const char *initrd_filename = args->initrd_filename;

    ARMCPU *cpu;

    MemoryRegion *address_space_mem = get_system_memory();

    MemoryRegion *ext_ram = g_new(MemoryRegion, 1);

    MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);

    DeviceState *dev;

    SysBusDevice *busdev;

    qemu_irq *irqp;

    qemu_irq pic[64];

    NICInfo *nd;

    int n;

    qemu_irq cpu_irq;

    if (!cpu_model) {

        cpu_model = "cortex-a9";

    }

    cpu = cpu_arm_init(cpu_model);

    if (!cpu) {

        fprintf(stderr, "Unable to find CPU definition\n");

        exit(1);

    }

    irqp = arm_pic_init_cpu(cpu);

    cpu_irq = irqp[ARM_PIC_CPU_IRQ];

    /* max 2GB ram */

    if (ram_size > 0x80000000) {

        ram_size = 0x80000000;

    }

    /* DDR remapped to address zero.  */

    memory_region_init_ram(ext_ram, "zynq.ext_ram", ram_size);

    vmstate_register_ram_global(ext_ram);

    memory_region_add_subregion(address_space_mem, 0, ext_ram);

    /* 256K of on-chip memory */

    memory_region_init_ram(ocm_ram, "zynq.ocm_ram", 256 << 10);

    vmstate_register_ram_global(ocm_ram);

    memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram);

    DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);

    /* AMD */

    pflash_cfi02_register(0xe2000000, NULL, "zynq.pflash", FLASH_SIZE,

                          dinfo ? dinfo->bdrv : NULL, FLASH_SECTOR_SIZE,

                          FLASH_SIZE/FLASH_SECTOR_SIZE, 1,

                          1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa,

                              0);

    dev = qdev_create(NULL, "xilinx,zynq_slcr");

    qdev_init_nofail(dev);

    sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xF8000000);

    dev = qdev_create(NULL, "a9mpcore_priv");

    qdev_prop_set_uint32(dev, "num-cpu", 1);

    qdev_init_nofail(dev);

    busdev = sysbus_from_qdev(dev);

    sysbus_mmio_map(busdev, 0, 0xF8F00000);

    sysbus_connect_irq(busdev, 0, cpu_irq);

    for (n = 0; n < 64; n++) {

        pic[n] = qdev_get_gpio_in(dev, n);

    }

    zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET]);

    zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET]);

    sysbus_create_simple("cadence_uart", 0xE0000000, pic[59-IRQ_OFFSET]);

    sysbus_create_simple("cadence_uart", 0xE0001000, pic[82-IRQ_OFFSET]);

    sysbus_create_varargs("cadence_ttc", 0xF8001000,

            pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL);

    sysbus_create_varargs("cadence_ttc", 0xF8002000,

            pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL);

    for (n = 0; n < nb_nics; n++) {

        nd = &nd_table[n];

        if (n == 0) {

            gem_init(nd, 0xE000B000, pic[54-IRQ_OFFSET]);

        } else if (n == 1) {

            gem_init(nd, 0xE000C000, pic[77-IRQ_OFFSET]);

        }

    }

    zynq_binfo.ram_size = ram_size;

    zynq_binfo.kernel_filename = kernel_filename;

    zynq_binfo.kernel_cmdline = kernel_cmdline;

    zynq_binfo.initrd_filename = initrd_filename;

    zynq_binfo.nb_cpus = 1;

    zynq_binfo.board_id = 0xd32;

    zynq_binfo.loader_start = 0;

    arm_load_kernel(arm_env_get_cpu(first_cpu), &zynq_binfo);

}

static QEMUMachine zynq_machine = {

    .name = "xilinx-zynq-a9",

    .desc = "Xilinx Zynq Platform Baseboard for Cortex-A9",

    .init = zynq_init,

    .use_scsi = 1,

    .max_cpus = 1,

    .no_sdcard = 1

};

static void zynq_machine_init(void)

{

    qemu_register_machine(&zynq_machine);

}

machine_init(zynq_machine_init);