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/*

 * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800

 * boards.

 *

 * 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 "sysbus.h"

#include "hw.h"

#include "net/net.h"

#include "flash.h"

#include "sysemu/sysemu.h"

#include "devices.h"

#include "boards.h"

#include "xilinx.h"

#include "sysemu/blockdev.h"

#include "exec/address-spaces.h"

#include "microblaze_boot.h"

#include "microblaze_pic_cpu.h"

#define LMB_BRAM_SIZE  (128 * 1024)

#define FLASH_SIZE     (16 * 1024 * 1024)

#define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"

#define MEMORY_BASEADDR 0x90000000

#define FLASH_BASEADDR 0xa0000000

#define INTC_BASEADDR 0x81800000

#define TIMER_BASEADDR 0x83c00000

#define UARTLITE_BASEADDR 0x84000000

#define ETHLITE_BASEADDR 0x81000000

static void machine_cpu_reset(MicroBlazeCPU *cpu)

{

    CPUMBState *env = &cpu->env;

    env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family.  */

}

static void

petalogix_s3adsp1800_init(QEMUMachineInitArgs *args)

{

    ram_addr_t ram_size = args->ram_size;

    const char *cpu_model = args->cpu_model;

    DeviceState *dev;

    MicroBlazeCPU *cpu;

    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;

    MemoryRegion *sysmem = get_system_memory();

    /* 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_s3adsp1800.lmb_bram", LMB_BRAM_SIZE);

    vmstate_register_ram_global(phys_lmb_bram);

    memory_region_add_subregion(sysmem, 0x00000000, phys_lmb_bram);

    memory_region_init_ram(phys_ram, "petalogix_s3adsp1800.ram", ram_size);

    vmstate_register_ram_global(phys_ram);

    memory_region_add_subregion(sysmem, ddr_base, phys_ram);

    dinfo = drive_get(IF_PFLASH, 0, 0);

    pflash_cfi01_register(FLASH_BASEADDR,

                          NULL, "petalogix_s3adsp1800.flash", FLASH_SIZE,

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

                          FLASH_SIZE >> 16,

                          1, 0x89, 0x18, 0x0000, 0x0, 1);

    cpu_irq = microblaze_pic_init_cpu(env);

    dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 2);

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

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

    }

    sysbus_create_simple("xlnx.xps-uartlite", UARTLITE_BASEADDR, irq[3]);

    /* 2 timers at irq 2 @ 62 Mhz.  */

    xilinx_timer_create(TIMER_BASEADDR, irq[0], 0, 62 * 1000000);

    xilinx_ethlite_create(&nd_table[0], ETHLITE_BASEADDR, irq[1], 0, 0);

    microblaze_load_kernel(cpu, ddr_base, ram_size,

                    BINARY_DEVICE_TREE_FILE, machine_cpu_reset);

}

static QEMUMachine petalogix_s3adsp1800_machine = {

    .name = "petalogix-s3adsp1800",

    .desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800",

    .init = petalogix_s3adsp1800_init,

    .is_default = 1

};

static void petalogix_s3adsp1800_machine_init(void)

{

    qemu_register_machine(&petalogix_s3adsp1800_machine);

}

machine_init(petalogix_s3adsp1800_machine_init);